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Erickson NEN, April S, Campbell JR, Homerosky E, Ware T, Dorin C, Waldner CL, Ellis JA. Comparison of postweaning bovine respiratory disease treatment rates between non-vaccinated control beef calves and calves variably primed and boosted using commercially available bovine coronavirus vaccines. THE CANADIAN VETERINARY JOURNAL = LA REVUE VETERINAIRE CANADIENNE 2024; 65:581-586. [PMID: 38827595 PMCID: PMC11132172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2024]
Abstract
Objective Bovine respiratory disease (BRD) and overall postweaning treatment rates were compared among 3 groups of calves either differentially primed and boosted with commercially available bovine coronavirus (BCoV) vaccine or not vaccinated against BCoV. Animals Commercial heifer and steer beef calves born in April and May 2022. Procedure In June 2022, calves were randomly enrolled into 3 treatment groups. Those in 2 groups [V1 (n = 160) and V2 (n = 160)] were administered a mucosal priming dose of 1 of 2 commercial BCoV vaccines; those in the 3rd group [CTL (n = 151)] were unvaccinated against BCoV. The V1 and V2 groups were boosted by intramuscular injection pre-weaning with the same vaccine used for priming. Weaning occurred 3 wk after the last preweaning processing day. Ranch staff used a BRD case definition provided by their herd veterinarian to identify, treat, and record treatments for 45 d post-weaning. Results Postweaning BRD treatment rates for V1, V2, and CTL were 7%, 9%, and 14%, respectively. The CTL calves had 2.2× greater odds of receiving treatment for BRD than V1 calves. There were no differences in odds of treatment between CTL and V2 calves or V1 and V2 calves. Conclusion In a herd with previously diagnosed BCoV BRD cases, prime-boost vaccination of calves is associated with a difference in odds of BRD treatment post-weaning compared to not vaccinating calves against BCoV. Clinical relevance Prime-boost vaccination with commercial BCoV vaccine may be an important management tool for herds with known BCoV BRD outbreaks.
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Affiliation(s)
- Nathan E N Erickson
- Department of Large Animal Clinical Sciences (Erickson, April, Campbell, Waldner) and Department of Microbiology (Ellis), Western College of Veterinary Medicine, 52 Campus Drive, Saskatoon, Saskatchewan S7N 5B4; Veterinary Agri-Health Services, 281121 Dickson Stevenson Trail, Rocky View County, Alberta T4B 4L5 (Homerosky, Ware, Dorin)
| | - Sharlene April
- Department of Large Animal Clinical Sciences (Erickson, April, Campbell, Waldner) and Department of Microbiology (Ellis), Western College of Veterinary Medicine, 52 Campus Drive, Saskatoon, Saskatchewan S7N 5B4; Veterinary Agri-Health Services, 281121 Dickson Stevenson Trail, Rocky View County, Alberta T4B 4L5 (Homerosky, Ware, Dorin)
| | - John R Campbell
- Department of Large Animal Clinical Sciences (Erickson, April, Campbell, Waldner) and Department of Microbiology (Ellis), Western College of Veterinary Medicine, 52 Campus Drive, Saskatoon, Saskatchewan S7N 5B4; Veterinary Agri-Health Services, 281121 Dickson Stevenson Trail, Rocky View County, Alberta T4B 4L5 (Homerosky, Ware, Dorin)
| | - Elizabeth Homerosky
- Department of Large Animal Clinical Sciences (Erickson, April, Campbell, Waldner) and Department of Microbiology (Ellis), Western College of Veterinary Medicine, 52 Campus Drive, Saskatoon, Saskatchewan S7N 5B4; Veterinary Agri-Health Services, 281121 Dickson Stevenson Trail, Rocky View County, Alberta T4B 4L5 (Homerosky, Ware, Dorin)
| | - Tommy Ware
- Department of Large Animal Clinical Sciences (Erickson, April, Campbell, Waldner) and Department of Microbiology (Ellis), Western College of Veterinary Medicine, 52 Campus Drive, Saskatoon, Saskatchewan S7N 5B4; Veterinary Agri-Health Services, 281121 Dickson Stevenson Trail, Rocky View County, Alberta T4B 4L5 (Homerosky, Ware, Dorin)
| | - Craig Dorin
- Department of Large Animal Clinical Sciences (Erickson, April, Campbell, Waldner) and Department of Microbiology (Ellis), Western College of Veterinary Medicine, 52 Campus Drive, Saskatoon, Saskatchewan S7N 5B4; Veterinary Agri-Health Services, 281121 Dickson Stevenson Trail, Rocky View County, Alberta T4B 4L5 (Homerosky, Ware, Dorin)
| | - Cheryl L Waldner
- Department of Large Animal Clinical Sciences (Erickson, April, Campbell, Waldner) and Department of Microbiology (Ellis), Western College of Veterinary Medicine, 52 Campus Drive, Saskatoon, Saskatchewan S7N 5B4; Veterinary Agri-Health Services, 281121 Dickson Stevenson Trail, Rocky View County, Alberta T4B 4L5 (Homerosky, Ware, Dorin)
| | - John A Ellis
- Department of Large Animal Clinical Sciences (Erickson, April, Campbell, Waldner) and Department of Microbiology (Ellis), Western College of Veterinary Medicine, 52 Campus Drive, Saskatoon, Saskatchewan S7N 5B4; Veterinary Agri-Health Services, 281121 Dickson Stevenson Trail, Rocky View County, Alberta T4B 4L5 (Homerosky, Ware, Dorin)
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Kesler KW, Abuelo A. Mitochondrial function of dairy calf lymphocytes from birth to immunologic maturity. J Dairy Sci 2024:S0022-0302(24)00870-1. [PMID: 38825145 DOI: 10.3168/jds.2024-24849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Accepted: 04/23/2024] [Indexed: 06/04/2024]
Abstract
The inability of dairy calves to fully respond to immune stimuli until they reach maturity at 6 mo of age severely limits the use of parenteral vaccines to protect calves against disease. Immune responses are metabolically demanding, and immune cells rely on mitochondrial metabolites for their functionality. Due to the essential role of mitochondria in driving T-cell responses necessary for vaccine efficacy, we hypothesized that the mitochondrial function of dairy calf lymphocytes changes with age, from birth to immunologic maturity. In this cross-sectional study, groups of dairy calves (n = 4/group) were blood sampled at birth before colostrum intake and at 1, 2, 3, 4, 6, 8, 16, and 24 wk of age. Mid-lactation adult cows (n = 4) were also sampled to reference fully mature immune cell populations. B, CD4+, CD8+, and γδ T lymphocytes were enriched using magnetic-activated cell sorting, and their mitochondrial function was assessed with an extracellular flux analyzer. Non-mitochondrial oxygen consumption, basal respiration, maximal respiration, spare respiratory capacity, proton leak, and the oxygen consumption rate (OCR) to extracellular acidification rate (ECAR) ratio were reported. Results were compared among groups using a Kruskal-Wallis test. The OCR to ECAR ratio is an indicator of the relative proportions of oxidative phosphorylation and aerobic glycolysis which is associated with effector functions in lymphocytes. The ratio was lower in 0 wk than adults in CD4+ T-cells. For CD8+ T-cells, the OCR to ECAR ratio for the 2 wk group was lower than the 3 wk group. A lower OCR to ECAR ratio indicates more reliance on glycolytic metabolism than oxidative phosphorylation. Maximal respiration is an indication of mitochondrial efficiency and is often associated with mitochondrial mass. For γδ T-cells, the 3 wk group had higher maximal respiration than the 16 wk group, whereas for B cells maximal respiration was higher in the 1 wk compared with the 16 wk group. Basal respiration indicates all cell functions that require oxygen and was lower in the 0 wk group than the 1 wk and 3 wk groups for CD4+ T-cells. γδ T-cells exhibited lower basal respiration in the 2 wk group than the 24 wk one. Although we found minimal differences in the mitochondrial outcomes reported from non-stimulated lymphocytes from birth through 6 mo of age and mid-lactation adults who served as mature immune cell populations, these results align with previous reports from weaning aged calf and adult CD4+ T-cells. In conclusion, there was insufficient evidence to suggest that the mitochondria in the lymphocytes of dairy calves from birth through immunologic maturity had functional changes associated with age. In conclusion, the capacity of unstimulated calf mitochondria to perform oxidative phosphorylation is not associated with age.
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Affiliation(s)
- Kathryn W Kesler
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing, 48824
| | - Angel Abuelo
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing, 48824.
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Novakoski PV, de Vitt MG, Molosse VL, Xavier ACH, Wagner R, Klein B, Milarch CF, Leonardi LE, Kozloski GV, Vedovatto M, da Silva AS. The addition of curcumin to the diet of post-weaning dairy calves: effects on ruminal fermentation, immunological, and oxidative responses. Trop Anim Health Prod 2024; 56:142. [PMID: 38662082 DOI: 10.1007/s11250-024-03993-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Accepted: 04/15/2024] [Indexed: 04/26/2024]
Abstract
Incorporating Curcumin into animal diets holds significant promise for enhancing both animal health and productivity, with demonstrated positive impacts on antioxidant activity, anti-microbial responses. Therefore, this study aimed to determine whether adding Curcumin to the diet of dairy calves would influence ruminal fermentation, hematologic, immunological, oxidative, and metabolism variables. Fourteen Jersey calves were divided into a control group (GCON) and a treatment group (GTRA). The animals in the GTRA received a diet containing 65.1 mg/kg of dry matter (DM) Curcumin (74% purity) for an experimental period of 90 days. Blood samples were collected on days 0, 15, 45, and 90. Serum levels of total protein and globulins were higher in the GTRA group (P < 0.05) than the GCON group. In the GTRA group, there was a reduction in pro-inflammatory cytokines (IL-1ß and IL-6) (P < 0.05) and an increase in IL-10 (which acts on anti-inflammatory responses) (P < 0.05) when compared to the GCON. There was a significantly higher (P < 0.05) concentration of immunoglobulin A (IgA) in the serum of the GTRA than the GCON. A Treatment × Day interaction was observed for haptoglobin levels, which were higher on day 90 in animals that consumed Curcumin than the GCON (P < 0.05). The catalase and superoxide dismutase activities were significantly higher (P < 0.05) in GTRA, reducing lipid peroxidation when compared to the GCONT. Hematologic variables did not differ significantly between groups. Among the metabolic variables, only urea was higher in the GTRA group when compared to the GCON. Body weight and feed efficiency did not differ between groups (meaning the percentage of apparent digestibility of dry matter, crude protein, and acid detergent fiber (ADF) and neutral detergent fiber (NDF). There was a tendency (P = 0.09) for treatment effect and a treatment x day interaction (P = 0.05) for levels of short-chain fatty acids in rumen fluid, being lower in animals that consumed curcumin. There was a treatment vs. day interaction (P < 0.05) for the concentration of acetate in the rumen fluid (i.e., on day 45, had a reduction in acetate; on day 90, values were higher in the GTRA group when compared to the GCON). We conclude that there was no evidence in the results from this preliminary trial that Curcumin in the diet of dairy calves interfered with feed digestibility. Curcumin may have potential antioxidant, anti-inflammatory, and immune effects that may be desirable for the production system of dairy calves.
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Affiliation(s)
- Pablo Vinicius Novakoski
- Graduate Program in Animal Science, Universidade do Estado de Santa Catarina (UDESC), Chapecó - SC, Brazil
| | - Maksuel Gatto de Vitt
- Graduate Program in Animal Science, Universidade do Estado de Santa Catarina (UDESC), Chapecó - SC, Brazil
| | - Vitor Luiz Molosse
- Graduate Program in Animal Science, Universidade do Estado de Santa Catarina (UDESC), Chapecó - SC, Brazil
| | | | - Roger Wagner
- Department of Food Science, Universidade Federal de Santa Maria (UFSM), Santa Maria , Brazil
| | - Bruna Klein
- Department of Animal Science, UDESC, R. Beloni Trombeta Zanin, 680E - Santo Ant?nio, Chapecó - SC, 89815-630, Brazil
| | | | | | | | - Marcelo Vedovatto
- Dean Lee Research and Extension Center, Louisiana State University, Alexandria, LA, 71302, USA
| | - Aleksandro S da Silva
- Department of Animal Science, UDESC, R. Beloni Trombeta Zanin, 680E - Santo Ant?nio, Chapecó - SC, 89815-630, Brazil.
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Flynn A, McAloon C, Sugrue K, Fitzgerald R, Sheridan C, Cowley B, McAloon C, Kennedy E. Investigation into the safety, and serological responses elicited by delivery of live intranasal vaccines for bovine herpes virus type 1, bovine respiratory syncytial virus, and parainfluenza type 3 in pre-weaned calves. Front Vet Sci 2024; 11:1283013. [PMID: 38464703 PMCID: PMC10920262 DOI: 10.3389/fvets.2024.1283013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 01/23/2024] [Indexed: 03/12/2024] Open
Abstract
Despite the fact that pneumonia remains a leading cause of mortality and morbidity in pre-weaned calves, relatively little is known regarding the effects of the concurrent administration of intranasal pneumonia virus vaccines, particularly in calves with high levels of maternally derived antibodies. The objective of this study was to use a cohort of 40 dairy and dairy-beef female and male calves (27 females and 13 males) to determine serological responses to concurrent administration at 3 weeks of age (22 ± 4.85 days) of two commercially available intranasal (IN) vaccines for the viruses: bovine respiratory syncytial virus (BRSV), bovine herpes virus 1 (BoHV-1), and parainfluenza-3-virus (PI3-V). The study groups were as follows: (i) Bovilis IBR Marker Live only® (IO), (ii) Bovilis INtranasal RSP Live® only (RPO), (iii) Concurrent vaccination with Bovilis IBR Marker Live® & Bovilis Intranasal RSP Live® (CV), and (iv) a control group of non-vaccinated calves (CONT). The calves' serological response post-IN vaccination, clinical health scores, rectal temperatures, and weights were measured. Data were analyzed in SAS using mixed models and logistic regression. The CV calves had an average daily weight gain (ADG) of 0.74 (±0.02) kg, which was similar to CONT (0.77 ± 0.02 kg). Despite no significant differences in the antibody levels between study groups 3 weeks post-IN vaccination, following the administration of subsequent parenteral injections in the form of Bovilis Bovipast RSP®(antigens; inactivated BRSV, inactivated PI3-V, inactivated Mannheimia haemolytica) and Bovilis IBR Marker Live®, the antibody levels of the BRSV and PI3-V increased in both the CV and RPO study groups. Concurrent vaccination resulted in no increase in fever and no difference in health scores when compared to CONT.
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Affiliation(s)
- Anna Flynn
- Teagasc, Animal & Grassland Research and Innovation Centre, Fermoy, Ireland
- School of Veterinary Medicine, University College Dublin, Dublin, Ireland
| | - Catherine McAloon
- School of Veterinary Medicine, University College Dublin, Dublin, Ireland
| | - Katie Sugrue
- Teagasc, Animal & Grassland Research and Innovation Centre, Fermoy, Ireland
| | - Ricki Fitzgerald
- Teagasc, Animal & Grassland Research and Innovation Centre, Fermoy, Ireland
| | | | | | - Conor McAloon
- School of Veterinary Medicine, University College Dublin, Dublin, Ireland
| | - Emer Kennedy
- Teagasc, Animal & Grassland Research and Innovation Centre, Fermoy, Ireland
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Veshkini A, Dengler F, Bachmann L, Liermann W, Helm C, Ulrich R, Delling C, Kühn C, Hammon HM. Cryptosporidium parvum infection alters the intestinal mucosa transcriptome in neonatal calves: implications for immune function. Front Immunol 2024; 15:1351427. [PMID: 38318169 PMCID: PMC10839036 DOI: 10.3389/fimmu.2024.1351427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 01/05/2024] [Indexed: 02/07/2024] Open
Abstract
One of the leading causes of infectious diarrhea in newborn calves is the apicomplexan protozoan Cryptosporidium parvum (C. parvum). However, little is known about its immunopathogenesis. Using next generation sequencing, this study investigated the immune transcriptional response to C. parvum infection in neonatal calves. Neonatal male Holstein-Friesian calves were either orally infected (N = 5) or not (CTRL group, N = 5) with C. parvum oocysts (gp60 subtype IIaA15G2R1) at day 1 of life and slaughtered on day 7 after infection. Total RNA was extracted from the jejunal mucosa for short read. Differentially expressed genes (DEGs) between infected and CTRL groups were assessed using DESeq2 at a false discovery rate < 0.05. Infection did not affect plasma immunohematological parameters, including neutrophil, lymphocyte, monocyte, leucocyte, thrombocyte, and erythrocyte counts as well as hematocrit and hemoglobin concentration on day 7 post infection. The immune-related DEGs were selected according to the UniProt immune system process database and were used for gene ontology (GO) and pathway enrichment analysis using Cytoscape (v3.9.1). Based on GO analysis, DEGs annotated to mucosal immunity, recognizing and presenting antigens, chemotaxis of neutrophils, eosinophils, natural killer cells, B and T cells mediated by signaling pathways including toll like receptors, interleukins, tumor necrosis factor, T cell receptor, and NF-KB were upregulated, while markers of macrophages chemotaxis and cytosolic pattern recognition were downregulated. This study provides a holistic snapshot of immune-related pathways induced by C. parvum in calves, including novel and detailed feedback and feedforward regulatory mechanisms establishing the crosstalk between innate and adaptive immune response in neonate calves, which could be utilized further to develop new therapeutic strategies.
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Affiliation(s)
- Arash Veshkini
- Research Institute for Farm Animal Biology, Institute of Nutritional Physiology “Oskar Kellner”, Dummerstorf, Germany
| | - Franziska Dengler
- Institute of Physiology, Pathophysiology and Biophysics, University of Veterinary Medicine, Vienna, Austria
| | - Lisa Bachmann
- Research Institute for Farm Animal Biology, Institute of Nutritional Physiology “Oskar Kellner”, Dummerstorf, Germany
- Faculty of Agriculture and Food Science, University of Applied Science Neubrandenburg, Neubrandenburg, Germany
| | - Wendy Liermann
- Research Institute for Farm Animal Biology, Institute of Nutritional Physiology “Oskar Kellner”, Dummerstorf, Germany
| | - Christiane Helm
- Institutue for Veterinary Pathology, Leipzig University, Leipzig, Germany
| | - Reiner Ulrich
- Institutue for Veterinary Pathology, Leipzig University, Leipzig, Germany
| | - Cora Delling
- Institute of Veterinary Parasitology, Leipzig University, Leipzig, Germany
| | - Christa Kühn
- Research Institute for Farm Animal Biology, Institute of Genome Biology, Dummerstorf, Germany
- Agricultural and Environmental Faculty, University Rostock, Rostock, Germany
| | - Harald M. Hammon
- Research Institute for Farm Animal Biology, Institute of Nutritional Physiology “Oskar Kellner”, Dummerstorf, Germany
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Bigelow RA, Richeson JT, McClurg M, Valeris-Chacin R, Morley PS, Funk JL, Scott MA. Characterizing the influence of various antimicrobials used for metaphylaxis against bovine respiratory disease on host transcriptome responses. Front Vet Sci 2023; 10:1272940. [PMID: 37869487 PMCID: PMC10585045 DOI: 10.3389/fvets.2023.1272940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 09/20/2023] [Indexed: 10/24/2023] Open
Abstract
Currently, control against bovine respiratory disease (BRD) primarily consists of mass administration of an antimicrobial upon arrival to facility, termed "metaphylaxis." The objective of this study was to determine the influence of six different antimicrobials used as metaphylaxis on the whole blood host transcriptome in healthy steers upon and following arrival to the feedlot. One hundred and five steers were stratified by arrival body weight (BW = 247 ± 28 kg) and randomly and equally allocated to one of seven treatments: negative control (NC), ceftiofur (CEFT), enrofloxacin (ENRO), florfenicol (FLOR), oxytetracycline (OXYT), tildipirosin (TILD), or tulathromycin (TULA). On day 0, whole blood samples and BW were collected prior to a one-time administration of the assigned antimicrobial. Blood samples were collected again on days 3, 7, 14, 21, and 56. A subset of cattle (n = 6) per treatment group were selected randomly for RNA sequencing across all time points. Isolated RNA was sequenced (NovaSeq 6,000; ~35 M paired-end reads/sample), where sequenced reads were processed with ARS-UCD1.3 reference-guided assembly (HISAT2/StringTie2). Differential expression analysis comparing treatment groups to NC was performed with glmmSeq (FDR ≤ 0.05) and edgeR (FDR ≤ 0.1). Functional enrichment was performed with KOBAS-i (FDR ≤ 0.05). When compared only to NC, unique differentially expressed genes (DEGs) found within both edgeR and glmmSeq were identified for CEFT (n = 526), ENRO (n = 340), FLOR (n = 56), OXYT (n = 111), TILD (n = 3,001), and TULA (n = 87). At day 3, CEFT, TILD, and OXYT shared multiple functional enrichment pathways related to T-cell receptor signaling and FcεRI-mediated NF-kappa beta (kB) activation. On day 7, Class I major histocompatibility complex (MHC)-mediated antigen presentation pathways were enriched in ENRO and CEFT groups, and CEFT and FLOR had DEGs that affected IL-17 signaling pathways. There were no shared pathways or Gene Ontology (GO) terms among treatments at day 14, but TULA had 19 pathways and eight GO terms enriched related to NF- κβ activation, and interleukin/interferon signaling. Pathways related to cytokine signaling were enriched by TILD on day 21. Our research demonstrates immunomodulation and potential secondary therapeutic mechanisms induced by antimicrobials commonly used for metaphylaxis, providing insight into the beneficial anti-inflammatory properties antimicrobials possess.
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Affiliation(s)
- Rebecca A. Bigelow
- Department of Agricultural Sciences, West Texas A&M University, Canyon, TX, United States
| | - John T. Richeson
- Department of Agricultural Sciences, West Texas A&M University, Canyon, TX, United States
| | - Molly McClurg
- Veterinary, Education, Research, and Outreach Program, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, Canyon, TX, United States
| | - Robert Valeris-Chacin
- Veterinary, Education, Research, and Outreach Program, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, Canyon, TX, United States
| | - Paul S. Morley
- Veterinary, Education, Research, and Outreach Program, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, Canyon, TX, United States
| | - Jenna L. Funk
- Veterinary, Education, Research, and Outreach Program, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, Canyon, TX, United States
| | - Matthew A. Scott
- Veterinary, Education, Research, and Outreach Program, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, Canyon, TX, United States
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Kim UH, Kang SS, Jang SS, Kim SW, Chung KY, Kang DH, Park BH, Ha S. Bovine Viral Diarrhea Virus Antibody Level Variation in Newborn Calves after Vaccination of Late-Gestational Cows. Vet Sci 2023; 10:562. [PMID: 37756084 PMCID: PMC10535789 DOI: 10.3390/vetsci10090562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 08/30/2023] [Accepted: 09/04/2023] [Indexed: 09/28/2023] Open
Abstract
This study was conducted to confirm variation in bovine viral diarrhea virus (BVDV) antibody levels transferred to calves from their mother's colostrum after vaccination of late-gestational cows. Blood samples were drawn from 60 pregnant cows that had been vaccinated more than one year and less than two years previously. The samples were collected six weeks prior to the expected date of delivery. After sample collection, the cows were divided into two groups of 30. One group received 2 mL of BVDV vaccine, and a control group received 2 mL of phosphate-buffered saline (PBS). Blood was collected from the cows three weeks post-administration. Additional blood samples were taken from calves at 1, 4, 8, 12, 16, and 20 weeks after birth. The serum was separated from the collected blood, and BVDV antibody changes were confirmed by enzyme-linked immunosorbent assays. BVDV antibody levels were higher from 8 to 20 weeks of age in calves born to late-gestational BVDV-vaccinated cows than in calves born to control cows (p < 0.0083). Further analysis confirmed a slow decline in BVDV maternal antibodies in calves born to pregnant cows that produced high levels of BVDV antibodies following pre-calving BVDV vaccination. These results suggest that BVDV vaccination of cattle in late pregnancy may help to extend the duration of protection against BVDV infection in newborn calves.
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Affiliation(s)
- Ui-Hyung Kim
- Hanwoo Research Institute, National Institute of Animal Science, 4937, Gyeonggang-ro, Pyeongchang-gun 25340, Gangwon-do, Republic of Korea
| | - Sung-Sik Kang
- Hanwoo Research Institute, National Institute of Animal Science, 4937, Gyeonggang-ro, Pyeongchang-gun 25340, Gangwon-do, Republic of Korea
| | - Sun-Sik Jang
- Hanwoo Research Institute, National Institute of Animal Science, 4937, Gyeonggang-ro, Pyeongchang-gun 25340, Gangwon-do, Republic of Korea
| | - Sung Woo Kim
- Hanwoo Research Institute, National Institute of Animal Science, 4937, Gyeonggang-ro, Pyeongchang-gun 25340, Gangwon-do, Republic of Korea
| | - Ki-Yong Chung
- Department of Beef Science, Korea National College of Agriculture and Fisheries, 1515, Kongjwipatjwi-ro, Deokjin-gu, Jeonju-si 54874, Jeollabuk-do, Republic of Korea
| | - Dong-Hun Kang
- Department of Beef Science, Korea National College of Agriculture and Fisheries, 1515, Kongjwipatjwi-ro, Deokjin-gu, Jeonju-si 54874, Jeollabuk-do, Republic of Korea
| | - Bo-Hye Park
- Department of Beef Science, Korea National College of Agriculture and Fisheries, 1515, Kongjwipatjwi-ro, Deokjin-gu, Jeonju-si 54874, Jeollabuk-do, Republic of Korea
| | - Seungmin Ha
- Dairy Science Division, National Institute of Animal Science, 114 Sinbang 1-gil, Seonghwan-eup, Seobuk-gu, Cheonan-si 31000, Chungcheongnam-do, Republic of Korea
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Loch M, Niine T, Dorbek-Kolin E, Peetsalu K, Orro T. Associations of neonatal acute phase response with first lactation performance in dairy cows. J Dairy Sci 2023; 106:6353-6364. [PMID: 37479579 DOI: 10.3168/jds.2022-22669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 03/17/2023] [Indexed: 07/23/2023]
Abstract
During the first 3 wk of life, the immune system of newborn ruminants starts to work, as indicated by fluctuations in the concentrations of proinflammatory cytokines and acute phase proteins (APP). They have been shown to be markers for short and long-term weight gain in ruminants. This observational study investigated these proteins as possible indicators of first lactation performance of dairy cows. A total of 117 dairy calves from a single farm were enrolled in the study. Serum and fecal samples were taken once a week for the first 3 wk of life. Cryptosporidium spp. infection and its treatment were monitored and accounted for in statistical analysis. The concentrations of the APP serum amyloid A (SAA) and haptoglobin (Hp), and the proinflammatory cytokines interleukin-6 (IL-6) and tumor necrosis factor α (TNF-α) were analyzed in serum. After the first lactation, health and performance data of the cows were retrieved, and associations between APP and cytokine concentrations with first lactation outcomes were investigated through linear and logistic regression. This study found a negative association between the concentration of Hp in the second week of life and average daily weight gain at one year. The SAA concentration measured during the second and third weeks of life was positively associated with age at first calving. IL-6, SAA, and Hp measured in the second week of life were positively associated with calving to conception interval. The concentrations of IL-6 and TNF-α during the first week of life were associated with higher odds of reproductive issues during the first lactation period. These markers can be used to help understand underlying processes that influence animal health and production. In conclusion, inflammatory responses during the first week of life are related to reproductive success, whereas the second and third weeks of life seem to influence the future productive performance in dairy cows.
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Affiliation(s)
- Marina Loch
- Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 62, Tartu, 51014, Estonia.
| | - Tarmo Niine
- Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 62, Tartu, 51014, Estonia
| | - Elisabeth Dorbek-Kolin
- Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 62, Tartu, 51014, Estonia
| | - Kristel Peetsalu
- Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 62, Tartu, 51014, Estonia
| | - Toomas Orro
- Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 62, Tartu, 51014, Estonia
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Piao M, Tu Y, Zhang N, Diao Q, Bi Y. Advances in the Application of Phytogenic Extracts as Antioxidants and Their Potential Mechanisms in Ruminants. Antioxidants (Basel) 2023; 12:antiox12040879. [PMID: 37107254 PMCID: PMC10135197 DOI: 10.3390/antiox12040879] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 03/24/2023] [Accepted: 03/29/2023] [Indexed: 04/08/2023] Open
Abstract
Under current breeding conditions, multiple stressors are important challenges facing animal husbandry in achieving animal wellbeing. For many years, the use of antibiotics has been a social concern in the livestock industry. With the implementation of the non-antibiotics policy, there is an urgent need to find relevant technologies and products to replace antibiotics and to solve the problem of disease prevention during animal growth. Phytogenic extracts have the unique advantages of being natural and extensive sources, having a low residue, and being pollution-free and renewable. They can relieve the various stresses, including oxidative stress, on animals and even control their inflammation by regulating the signaling pathways of proinflammatory cytokines, improving animal immunity, and improving the structure of microorganisms in the gastrointestinal tract, thereby becoming the priority choice for improving animal health. In this study, we reviewed the types of antioxidants commonly used in the livestock industry and their applicable effects on ruminants, as well as the recent research progress on their potential mechanisms of action. This review may provide a reference for further research and for the application of other phytogenic extracts and the elucidation of their precise mechanisms of action.
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Affiliation(s)
- Minyu Piao
- Key Laboratory of Feed Biotechnology of the Ministry of Agriculture and Rural Affairs, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yan Tu
- Key Laboratory of Feed Biotechnology of the Ministry of Agriculture and Rural Affairs, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Naifeng Zhang
- Key Laboratory of Feed Biotechnology of the Ministry of Agriculture and Rural Affairs, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Qiyu Diao
- Key Laboratory of Feed Biotechnology of the Ministry of Agriculture and Rural Affairs, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yanliang Bi
- Key Laboratory of Feed Biotechnology of the Ministry of Agriculture and Rural Affairs, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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10
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Development of an IgY-Based Treatment to Control Bovine Coronavirus Diarrhea in Dairy Calves. Viruses 2023; 15:v15030708. [PMID: 36992417 PMCID: PMC10059803 DOI: 10.3390/v15030708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 03/05/2023] [Accepted: 03/06/2023] [Indexed: 03/11/2023] Open
Abstract
Bovine Coronavirus (BCoV) is a major pathogen associated with neonatal calf diarrhea. Standard practice dictates that to prevent BCoV diarrhea, dams should be immunized in the last stage of pregnancy to increase BCoV-specific antibody (Ab) titers in serum and colostrum. For the prevention to be effective, calves need to suck maternal colostrum within the first six to twelve hours of life before gut closure to ensure a good level of passive immunity. The high rate of maternal Ab transfer failure resulting from this process posed the need to develop alternative local passive immunity strategies to strengthen the prevention and treatment of BCoV diarrhea. Immunoglobulin Y technology represents a promising tool to address this gap. In this study, 200 laying hens were immunized with BCoV to obtain spray-dried egg powder enriched in specific IgY Abs to BCoV on a large production scale. To ensure batch-to-batch product consistency, a potency assay was statistically validated. With a sample size of 241, the BCoV-specific IgY ELISA showed a sensitivity and specificity of 97.7% and 98.2%, respectively. ELISA IgY Abs to BCoV correlated with virus-neutralizing Ab titers (Pearson correlation, R2 = 0.92, p < 0.001). Most importantly, a pilot efficacy study in newborn calves showed a significant delay and shorter duration of BCoV-associated diarrhea and shedding in IgY-treated colostrum-deprived calves. Calves were treated with milk supplemented with egg powder (final IgY Ab titer to BCoV ELISA = 512; VN = 32) for 14 days as a passive treatment before a challenge with BCoV and were compared to calves fed milk with no supplementation. This is the first study with proof of efficacy of a product based on egg powder manufactured at a scale that successfully prevents BCoV-associated neonatal calf diarrhea.
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The Effect of Supplementation Using a Mixture of Fish Oil and Linseed on the Level of Immunomodulatory Components in Bovine Colostrum. Molecules 2023; 28:molecules28052154. [PMID: 36903401 PMCID: PMC10004384 DOI: 10.3390/molecules28052154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 02/22/2023] [Accepted: 02/24/2023] [Indexed: 03/03/2023] Open
Abstract
The aim of this study was to determine the effect of supplementing rations, with a mixture of fish oil and linseed, on the level of immunomodulatory components in colostrum. Twenty multiparous cows, that were three weeks before scheduled calving, had a body condition of 3-3.5, and had not been diagnosed with multiple pregnancies, were qualified for the experiment. The cows were divided into two groups: experimental (FOL) (n = 10) and control (CTL) (n = 10). The CTL group were individually given the standard food ration for dry cows for about 21 days before calving, while the FOL group received food rations that were enriched with 150 g of fish oil and 250 g of linseed (golden variety). Colostrum samples for testing were taken twice a day on the first and second days of lactation, and then once a day from the third to the fifth day of lactation. The experiment showed that the applied supplementation had an impact, in the form of increasing the fat, protein, IgG, IgA, IgM, vitamin A, C22:6 n-3 (DHA), and C18:2 cis9 trans11 (CLA) contents in colostrum; however, the C18: 2 n-6 (LA) and C20:4 n-6 (AA) contents decreased. Due to the lower quality of colostrum found in high-yield cows, and therefore in the Holstein-Friesian breed, it is possible to improve the quality by, among other things, introducing nutritional modifications during the second stage of the dry period.
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12
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Somagond YM, Alhussien MN, Dang AK. Repeated injection of multivitamins and multiminerals during the transition period enhances immune response by suppressing inflammation and oxidative stress in cows and their calves. Front Immunol 2023; 14:1059956. [PMID: 36845154 PMCID: PMC9950815 DOI: 10.3389/fimmu.2023.1059956] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Accepted: 01/27/2023] [Indexed: 02/12/2023] Open
Abstract
Periparturient dairy cows undergo major physiological and metabolic changes as well as immunosuppression, associated with decrease in plasma concentrations of various minerals and vitamins. The present study was conducted to investigate effects of repeated injections of vitamins and minerals on oxidative stress, innate and adaptive immune response in periparturient dairy cows and their offspring. Experiment was carried out on 24 peripartum Karan-Fries cows, randomly divided into four groups (n=6): control, Multi-mineral (MM), Multi-vitamin (MV) and Multi-minerals and Multi-vitamin (MMMV). Five ml of MM (Zinc 40 mg/ml, Manganese 10 mg/ml, Copper 15 mg/ml, Selenium 5 mg/ml) and five ml of MV (Vitamin E 5 mg/ml, Vitamin A 1000 IU/ml, B-Complex 5 mg/ml, and Vitamin D3 500 IU/ml) were injected intramuscularly (IM) to the MM and MV groups. MMMV group cows were injected with both. In all treatment groups, injections and blood sampling were carried out on 30th, 15th, 7th days before and after expected date of parturition and at calving. In calves, blood was collected at calving and on 1, 2, 3, 4, 7, 8, 15, 30 and 45 days post-calving. Colostrum/milk were collected at calving and at days 2, 4, and 8 post-calving. A lower percentage of total neutrophils and immature neutrophils, higher percentage of lymphocytes together with increased phagocytic activity of neutrophils and proliferative capacity of lymphocytes found in blood of MMMV cows/calves. Lower relative mRNA expression of TLRs and CXCRs and higher mRNA expression of GR-α, CD62L, CD11b, CD25 and CD44 found in blood neutrophils of MMMV groups. Total antioxidant capacity was higher, activity of antioxidant enzymes (SOD and CAT), TBARS levels were lower in the blood plasma of treated cows/calves. In both cows/calves, plasma pro-inflammatory cytokines (IL-1α, IL-1β, IL-6, IL-8, IL-17A, IFN-γ and TNF-α) increased, whereas anti-inflammatory cytokines (IL-4 and IL-10) decreased in MMMV groups. Total immunoglobulins increased in colostrum/milk of MMMV injected cows and plasma of their calves. Results indicate that repeated injections of multivitamins and multiminerals to peripartum dairy cows could be a major strategy to improve immune response and decrease in inflammation and oxidative stress in transition dairy cows and their calves.
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Affiliation(s)
- Yallappa M. Somagond
- Lactation and Immuno-Physiology Laboratory, Indian Council of Agricultural Research (ICAR)-National Dairy Research Institute, Karnal, Haryana, India
| | - Mohanned Naif Alhussien
- Lactation and Immuno-Physiology Laboratory, Indian Council of Agricultural Research (ICAR)-National Dairy Research Institute, Karnal, Haryana, India,Reproductive Biotechnology, School of Life Sciences, Technical University of Munich, Freising, Germany
| | - Ajay Kumar Dang
- Lactation and Immuno-Physiology Laboratory, Indian Council of Agricultural Research (ICAR)-National Dairy Research Institute, Karnal, Haryana, India,*Correspondence: Ajay Kumar Dang, ;
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Survey of Management Practices and Farmers’ Perceptions of Diseases on Organic Dairy Cattle Farms in California. Animals (Basel) 2022; 12:ani12192526. [PMID: 36230266 PMCID: PMC9558946 DOI: 10.3390/ani12192526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 08/31/2022] [Accepted: 09/17/2022] [Indexed: 11/29/2022] Open
Abstract
Simple Summary In 2019, California accounted for approximately 40% of organic products in the US, and dairy products and milk were the top organic commodity in the state. The objective of this study was to describe organic dairy cattle farmers’ management practices and perceptions of diseases in California. A questionnaire on farm history and demographics, animal diseases, parasite problems, housing and pasture management, and organic education, was mailed to 160 organic dairy farms, of which 36 responded. Respondents were more likely to report mastitis in cows, pinkeye in heifers, and digestive problems in calves, as issues affecting their stock “often” or “almost always” in the last 12 months. Although most farmers vaccinated their cattle against Bovine Viral Diarrhea and Escherichia coli mastitis, they still described that these diseases frequently impacted their animals. Over half of the farmers did not perceive gastrointestinal parasites or biting flies to be a problem and did not observe signs of lice and mites. According to the results, the management of disease in all age classes is a concern; options and efficacies of alternative therapeutic methods, as well as preventive measures for organic dairies need to be further explored. Abstract In 2019, California accounted for approximately 40% of organic products in the US, and dairy products and milk were the top organic commodity in the state. The objective of this study was to describe organic dairy cattle farmers’ management practices and perceptions of diseases in California. A survey inquiring about farm history and demographics, animal diseases, parasite problems, housing and pasture management, and organic education, was mailed to 160 organic dairy farms, of which 36 (22.5%) responded. Among respondents, the majority (83.9%) were located in Northern California; median farm size was 310 cows, and the dominant breed was Holstein (60.0%). Respondents were more likely to report mastitis in cows (45.2%), pinkeye in heifers (31.3%), and digestive problems in calves (47.0%), as issues affecting their stock “often” or “almost always” in the last 12 months. Although most farmers vaccinated their cattle against Bovine Viral Diarrhea (86.1%) and Escherichia coli mastitis (80.6%), they still described that these diseases frequently impacted their animals. Over half of the farmers did not perceive gastrointestinal parasites or biting flies to be a problem and did not observe signs of lice and mites. According to the results, the management of disease in all age classes is a concern; options and efficacies of alternative therapeutic methods, as well as preventive measures for organic dairies need to be further explored.
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An Evaluation of Nutritional and Therapeutic Factors Affecting Pre-Weaned Calf Health and Welfare, and Direct-Fed Microbials as a Potential Alternative for Promoting Performance—A Review. DAIRY 2022. [DOI: 10.3390/dairy3030045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The priority for calf rearing has been to maintain good health and welfare in order to promote and sustain future production. However, there have been numerous reports of undesirable levels of morbidity and mortality amongst pre-weaned calves. This may be mitigated or exacerbated by nutritional management practices. Some areas of concern include colostrum feeding, utilization of waste milk, and restrictive milk feeding regimes. Antibiotics may be prescribed at lethal or sub-inhibitory doses to treat or prevent disease. However, extensive antibiotic use may disrupt the gastrointestinal microbiota and aid in expanding the antibiotic resistant gene pool. In an attempt to reduce the use of antibiotics, there is a demand to find alternative performance enhancers. Direct-fed microbials, also known as probiotics, may comply with this role. A DFM consists of live microorganisms that are biologically active and able to confer health benefits onto the host. Lactic acid bacteria have been the most frequently investigated; however, this field of research has expanded to include spore-forming bacteria and live yeast preparations. This review aims to provide a comprehensive evaluation of the nutritional management strategies that may increase a calf’s susceptibility to morbidity and mortality, the efficacy and sustainability of antibiotics as a tool for managing calf health and welfare, and the potential for DFMs as a supportive strategy for promoting calf wellbeing.
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15
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Nielsen SS, Alvarez J, Bicout DJ, Calistri P, Canali E, Drewe JA, Garin‐Bastuji B, Gonzales Rojas JL, Gortázar Schmidt C, Michel V, Miranda Chueca MÁ, Padalino B, Pasquali P, Roberts HC, Spoolder H, Stahl K, Velarde A, Viltrop A, Winckler C, Earley B, Edwards S, Faucitano L, Marti S, de La Lama GCM, Costa LN, Thomsen PT, Ashe S, Mur L, Van der Stede Y, Herskin M. Welfare of cattle during transport. EFSA J 2022; 20:e07442. [PMID: 36092766 PMCID: PMC9449995 DOI: 10.2903/j.efsa.2022.7442] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
In the framework of its Farm to Fork Strategy, the Commission is undertaking a comprehensive evaluation of the animal welfare legislation. The present Opinion deals with protection of cattle (including calves) during transport. Welfare of cattle during transport by road is the main focus, but other means of transport are also covered. Current practices related to transport of cattle during the different stages (preparation, loading/unloading, transit and journey breaks) are described. Overall, 11 welfare consequences were identified as being highly relevant for the welfare of cattle during transport based on severity, duration and frequency of occurrence: group stress, handling stress, heat stress, injuries, motion stress, prolonged hunger, prolonged thirst, respiratory disorders, restriction of movement, resting problems and sensory overstimulation. These welfare consequences and their animal-based measures are described. A variety of hazards, mainly relating to inexperienced/untrained handlers, inappropriate handling, structural deficiencies of vehicles and facilities, poor driving conditions, unfavourable microclimatic and environmental conditions, and poor husbandry practices leading to these welfare consequences were identified. The Opinion contains general and specific conclusions relating to the different stages of transport for cattle. Recommendations to prevent hazards and to correct or mitigate welfare consequences have been developed. Recommendations were also developed to define quantitative thresholds for microclimatic conditions within the means of transport and spatial thresholds (minimum space allowance). The development of welfare consequences over time was assessed in relation to maximum journey duration. The Opinion covers specific animal transport scenarios identified by the European Commission relating to transport of unweaned calves, cull cows, the export of cattle by livestock vessels, the export of cattle by road, roll-on-roll-off ferries and 'special health status animals', and lists welfare concerns associated with these.
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16
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Predictive Models for Weekly Cattle Mortality after Arrival at a Feeding Location Using Records, Weather, and Transport Data at Time of Purchase. Pathogens 2022; 11:pathogens11040473. [PMID: 35456148 PMCID: PMC9024862 DOI: 10.3390/pathogens11040473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 04/12/2022] [Accepted: 04/14/2022] [Indexed: 11/17/2022] Open
Abstract
Feedlot mortality negatively affects animal welfare and profitability. To the best of our knowledge, there are no publications on predictive models for weekly all-cause mortality in feedlot cattle. In this study, random forest models to predict weekly mortality for cattle purchase groups (n = 14,217 purchase groups; 860,545 animals) from arrival at the feeding location (Day 1) to Day 42 and cumulative mortality from Day 43 until slaughter were built using records, weather, and transport data available at the time of purchase. Models were evaluated by calculating the root mean squared error (RMSE) and accuracy (as defined as the percent of purchase groups that had predictions within 0.25% and 0.50% of actual mortality). The models had high accuracy (>90%), but the RMSE estimates were high (range = 1.0% to 4.1%). The best predictors were maximum temperature and purchase weight, although this varied by week. The models performed well among purchase groups with low weekly mortality but performed poorly in high mortality purchase groups. Although high mortality purchase groups were not accurately predicted utilizing the models in this study, the models may potentially have utility as a screening tool for very low mortality purchase groups after arrival. Future studies should consider building iterative models that utilize the strongest predictors identified in this study.
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17
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Eder JM, Sacco RE. Ex vivo activated CD4+ T cells from young calves exhibit Th2-biased effector function with distinct metabolic reprogramming compared to adult cows. Vet Immunol Immunopathol 2022; 248:110418. [DOI: 10.1016/j.vetimm.2022.110418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 03/29/2022] [Accepted: 04/02/2022] [Indexed: 10/18/2022]
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ISHIKAWA S, MIYAZAWA M, ZIBIKI Y, KAMIKAKIMOTO R, HOBO S. Flow cytometric analysis of bronchoalveolar lavage fluid immune dynamics in calves. J Vet Med Sci 2022; 84:548-557. [PMID: 35153256 PMCID: PMC9096045 DOI: 10.1292/jvms.21-0522] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Understanding the immune dynamics in the respiratory mucosa of calves is necessary for a
good management of bovine respiratory disease. Immune dynamics in the respiratory mucosa
in humans and experimental animals has been assessed by flow cytometric analysis of
bronchoalveolar lavage fluid (BALF); however, few reports have addressed this subject in
calves. The aim of this study was to establish a universal method to analyze
bronchoalveolar lavage fluid (BALF) by flow cytometry and to obtain basic knowledge of
bovine respiratory mucosal immune dynamics. We investigated the immune cell populations in
BALF and evaluated the surface antigen expression of alveolar macrophages in calves using
flow cytometer. To further analyze the surface antigen variation observed in alveolar
macrophages in detail, stimulation assays were performed in vitro. BALF
cells were separated into three distinct populations based on their light scatter plot,
which were considered to be macrophages, lymphocytes, and neutrophils. In most
individuals, most of the BALF immune cells were alveolar macrophages, but an increased
proportion of lymphocytes and neutrophils was observed in some individuals. Analysis of
each surface antigen expression in alveolar macrophages showed that CD21 and MHC class II
expression changed in response to changes in the leukocyte population. Moreover, when
alveolar macrophages were stimulated with interferon-γ in vitro, the
expression of CD21 was drastically reduced and MHC class II was increased, suggesting that
functional changes in alveolar macrophages themselves are involved in the immune
dynamics.
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Affiliation(s)
- Shingo ISHIKAWA
- Division of Veterinary Science, Graduate School of Life and Environmental Biosciences, Osaka Prefecture University
| | | | | | | | - Seiji HOBO
- Joint Faculty of Veterinary Medicine, Kagoshima University
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Cheng X, Wu W, Teng F, Yan Y, Li G, Wang L, Wang X, Wang R, Zhou H, Jiang Y, Cui W, Tang L, Li Y, Qiao X. Isolation and Characterization of Bovine RVA from Northeast China, 2017-2020. Life (Basel) 2021; 11:life11121389. [PMID: 34947920 PMCID: PMC8703504 DOI: 10.3390/life11121389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 12/05/2021] [Accepted: 12/08/2021] [Indexed: 12/01/2022] Open
Abstract
Group A rotaviruses (RVAs) are major enteric pathogens causing infections in calves. To investigate the epidemiological characteristics and genetic diversity of bovine rotavirus (BRV), 233 fecal samples were collected from calves with diarrhea in northeast China. The samples were analyzed for sequences encoding the inner capsid protein VP6 (subgroup) and the outer capsid proteins VP7 and VP4 (G and P type, respectively) using RT-PCR. Ten of the 233 samples (4.3%) were identified as BRV positive and were used for virus isolation and sequence analysis, revealing that all strains analyzed were of the G6P[1] genotype. The isolates exhibited high VP6 sequence identity to the USA cow RVA NCDV strain (>99% amino acid identity) and were further shown to be closely related to Japanese cow RVA BRV101 and Israelian human RVA G6P[1] strains, with >99% amino acid identity to VP7 and VP4 proteins, respectively. Comparative analyses of genome-predicted amino acid sequences between the isolates and the NCDV strains indicated that the antigenicity and infectivity of the strains isolated had changed. In this study, BRV genotypes and the genetic diversity among vaccinated cattle herds were monitored to provide epidemiological data and references for early diagnosis, allowing for early detection of new, potentially pathogenic RVA strains.
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Affiliation(s)
- Xi Cheng
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Department of Preventive, Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150038, China; (X.C.); (W.W.); (F.T.); (Y.Y.); (L.W.); (X.W.); (H.Z.); (Y.J.); (W.C.); (L.T.); (Y.L.)
| | - Wei Wu
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Department of Preventive, Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150038, China; (X.C.); (W.W.); (F.T.); (Y.Y.); (L.W.); (X.W.); (H.Z.); (Y.J.); (W.C.); (L.T.); (Y.L.)
| | - Fei Teng
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Department of Preventive, Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150038, China; (X.C.); (W.W.); (F.T.); (Y.Y.); (L.W.); (X.W.); (H.Z.); (Y.J.); (W.C.); (L.T.); (Y.L.)
| | - Yue Yan
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Department of Preventive, Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150038, China; (X.C.); (W.W.); (F.T.); (Y.Y.); (L.W.); (X.W.); (H.Z.); (Y.J.); (W.C.); (L.T.); (Y.L.)
| | - Guiwei Li
- Branch of Animal Husbandry and Veterinary of Heilongjiang Academy of Agricultural Sciences, Qiqihar 161000, China;
| | - Li Wang
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Department of Preventive, Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150038, China; (X.C.); (W.W.); (F.T.); (Y.Y.); (L.W.); (X.W.); (H.Z.); (Y.J.); (W.C.); (L.T.); (Y.L.)
| | - Xiaona Wang
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Department of Preventive, Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150038, China; (X.C.); (W.W.); (F.T.); (Y.Y.); (L.W.); (X.W.); (H.Z.); (Y.J.); (W.C.); (L.T.); (Y.L.)
| | - Ruichong Wang
- Department for Radiological Protection, Heilongjiang Province Center for Disease Control and Prevention, Harbin 150030, China;
| | - Han Zhou
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Department of Preventive, Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150038, China; (X.C.); (W.W.); (F.T.); (Y.Y.); (L.W.); (X.W.); (H.Z.); (Y.J.); (W.C.); (L.T.); (Y.L.)
| | - Yanping Jiang
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Department of Preventive, Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150038, China; (X.C.); (W.W.); (F.T.); (Y.Y.); (L.W.); (X.W.); (H.Z.); (Y.J.); (W.C.); (L.T.); (Y.L.)
| | - Wen Cui
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Department of Preventive, Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150038, China; (X.C.); (W.W.); (F.T.); (Y.Y.); (L.W.); (X.W.); (H.Z.); (Y.J.); (W.C.); (L.T.); (Y.L.)
| | - Lijie Tang
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Department of Preventive, Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150038, China; (X.C.); (W.W.); (F.T.); (Y.Y.); (L.W.); (X.W.); (H.Z.); (Y.J.); (W.C.); (L.T.); (Y.L.)
| | - Yijing Li
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Department of Preventive, Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150038, China; (X.C.); (W.W.); (F.T.); (Y.Y.); (L.W.); (X.W.); (H.Z.); (Y.J.); (W.C.); (L.T.); (Y.L.)
| | - Xinyuan Qiao
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Department of Preventive, Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150038, China; (X.C.); (W.W.); (F.T.); (Y.Y.); (L.W.); (X.W.); (H.Z.); (Y.J.); (W.C.); (L.T.); (Y.L.)
- Correspondence:
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20
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Lemon JL, McMenamy MJ. A Review of UK-Registered and Candidate Vaccines for Bovine Respiratory Disease. Vaccines (Basel) 2021; 9:vaccines9121403. [PMID: 34960149 PMCID: PMC8703677 DOI: 10.3390/vaccines9121403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 11/10/2021] [Accepted: 11/22/2021] [Indexed: 01/11/2023] Open
Abstract
Vaccination is widely regarded as a cornerstone in animal or herd health and infectious disease management. Nineteen vaccines against the major pathogens implicated in bovine respiratory disease are registered for use in the UK by the Veterinary Medicines Directorate (VMD). However, despite annual prophylactic vaccination, bovine respiratory disease is still conservatively estimated to cost the UK economy approximately £80 million per annum. This review examines the vaccine types available, discusses the surrounding literature and scientific rationale of the limitations and assesses the potential of novel vaccine technologies.
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Affiliation(s)
- Joanne L. Lemon
- Sustainable Agri-Food and Sciences Division, Agri-Food and Bioscience Institute, Newforge Lane, Belfast BT9 5PX, UK
- Correspondence:
| | - Michael J. McMenamy
- Veterinary Sciences Division, Agri-Food and Bioscience Institute, Stormont, Belfast BT4 3SD, UK;
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21
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Role of Infection and Immunity in Bovine Perinatal Mortality: Part 2. Fetomaternal Response to Infection and Novel Diagnostic Perspectives. Animals (Basel) 2021; 11:ani11072102. [PMID: 34359230 PMCID: PMC8300098 DOI: 10.3390/ani11072102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 07/09/2021] [Accepted: 07/12/2021] [Indexed: 11/30/2022] Open
Abstract
Simple Summary Bovine perinatal mortality (death of the fetus or calf before, during, or within 48 h of calving at full term (≥260 days) may be caused by noninfectious and infectious causes. Although infectious causes of fetal mortality are diagnosed less frequently, infection in utero may also compromise the development of the fetus without causing death. This review presents fetomaternal responses to infection and the changes which can be observed in such cases. Response to infection, especially the concentration of immunoglobulins and some acute-phase proteins, may be used for diagnostic purposes. Some changes in internal organs may also be used as an indicator of infection in utero. However, in all cases (except pathogen-specific antibody response) non-pathogen-specific responses do not aid in pathogen-specific diagnosis of the cause of calf death. But, nonspecific markers of in utero infection may allow us to assign the cause of fetal mortality to infection and thus increase our overall diagnosis rate, particularly in cases of the “unexplained stillbirth”. Abstract Bovine perinatal mortality due to infection may result either from the direct effects of intrauterine infection and/or the fetal response to such infection, leading to the fetal inflammatory response syndrome (FIRS). Both intrauterine infection and FIRS, which causes multi-organ damage and involution of immune organs, compromise fetal survivability, sometimes fatally. Organ injury associated with FIRS may, in addition to causing fetal mortality, irreversibly compromise extrauterine adaptation of the neonate, a recognized problem in human fetuses. Diagnosis of intrauterine infection and of FIRS requires related, but independent analytical approaches. In addition to detection of pathogens, the immune and inflammatory responses of the bovine fetus may be utilized to diagnose intrauterine infection. This can be done by detection of specific changes in internal organs and the measurement of antibodies and/or elements of the acute phase reaction. Currently our ability to diagnose FIRS in bovine fetuses and neonates is limited to research studies. This review focuses on both the fetomaternal response to infection and diagnostic methods which rely on the response of the fetus to infection and inflammatory changes, as well other methods which may improve diagnosis of intrauterine infection in cases of bovine perinatal mortality.
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Abstract
Bovine respiratory disease (BRD) is the leading cause of death in beef calves 3 weeks of age to weaning and is the leading cause of morbidity and mortality in beef feeding and finishing systems. Each outbreak of respiratory disease is the result of the completion of a sufficient cause, which might have also included components of viral and bacterial pathogens, a certain state of immunity, or other component causes of respiratory disease in cattle that we fail to understand. Disease is expressed when a sufficient cause is completed. Disease events we observe, such as the occurrence of BRD, usually have relationships with risk factors that are commonly the subject of epidemiologic research and the primary subject of this paper. However, it is important to understand that underlying systems produce those relationships and, ultimately, the occurrence of disease. The risk factors for BRD include a complex set of component causes that include bacterial and viral pathogens, level of host immunity, and environmental conditions that favor pathogen transmission and stress-induced susceptibility. During the post-weaning phase, these factors are superimposed on a system of marketing, transportation, and decisions made to support economic opportunity that further increase the risk for BRD.
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Díaz FE, Guerra-Maupome M, McDonald PO, Rivera-Pérez D, Kalergis AM, McGill JL. A Recombinant BCG Vaccine Is Safe and Immunogenic in Neonatal Calves and Reduces the Clinical Disease Caused by the Respiratory Syncytial Virus. Front Immunol 2021; 12:664212. [PMID: 33981309 PMCID: PMC8108697 DOI: 10.3389/fimmu.2021.664212] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 03/31/2021] [Indexed: 12/18/2022] Open
Abstract
The human respiratory syncytial virus (hRSV) constitutes a major health burden, causing millions of hospitalizations in children under five years old worldwide due to acute lower respiratory tract infections. Despite decades of research, licensed vaccines to prevent hRSV are not available. Development of vaccines against hRSV targeting young infants requires ruling out potential vaccine-enhanced disease presentations. To achieve this goal, vaccine testing in proper animal models is essential. A recombinant BCG vaccine that expresses the Nucleoprotein of hRSV (rBCG-N-hRSV) protects mice against hRSV infection, eliciting humoral and cellular immune protection. Further, this vaccine was shown to be safe and immunogenic in human adult volunteers. Here, we evaluated the safety, immunogenicity, and protective efficacy of the rBCG-N-hRSV vaccine in a neonatal bovine RSV calf infection model. Newborn, colostrum-replete Holstein calves were either vaccinated with rBCG-N-hRSV, WT-BCG, or left unvaccinated, and then inoculated via aerosol challenge with bRSV strain 375. Vaccination with rBCG-N-hRSV was safe and well-tolerated, with no systemic adverse effects. There was no evidence of vaccine-enhanced disease following bRSV challenge of rBCG-N-hRSV vaccinated animals, suggesting that the vaccine is safe for use in neonates. Vaccination increased virus-specific IgA and virus-neutralization activity in nasal fluid and increased the proliferation of virus- and BCG-specific CD4+ and CD8+ T cells in PBMCs and lymph nodes at 7dpi. Furthermore, rBCG-N-hRSV vaccinated calves developed reduced clinical disease as compared to unvaccinated control calves, although neither pathology nor viral burden were significantly reduced in the lungs. These results suggest that the rBCG-N-hRSV vaccine is safe in neonatal calves and induces protective humoral and cellular immunity against this respiratory virus. These data from a newborn animal model provide further support to the notion that this vaccine approach could be considered as a candidate for infant immunization against RSV.
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Affiliation(s)
- Fabián E Díaz
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Mariana Guerra-Maupome
- Department of Veterinary Microbiology and Preventative Medicine, Iowa State University, Ames, IA, United States
| | - Paiton O McDonald
- Department of Veterinary Microbiology and Preventative Medicine, Iowa State University, Ames, IA, United States
| | - Daniela Rivera-Pérez
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Alexis M Kalergis
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile.,Departamento de Endocrinología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Jodi L McGill
- Department of Veterinary Microbiology and Preventative Medicine, Iowa State University, Ames, IA, United States
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Cardoso CL, King A, Chapwanya A, Esposito G. Ante-Natal and Post-Natal Influences on Neonatal Immunity, Growth and Puberty of Calves-A Review. Animals (Basel) 2021; 11:ani11051212. [PMID: 33922339 PMCID: PMC8144962 DOI: 10.3390/ani11051212] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 04/19/2021] [Accepted: 04/19/2021] [Indexed: 12/03/2022] Open
Abstract
Simple Summary The objective of this review is to give the reader an overview of interactions between immunity, growth and puberty in calves and highlight how these influence future performances. The risk of morbidity and mortality is high during the first four weeks of age. Adaption to extra-uterine life starts early during embryonic development and is underpinned by optimal maternal nutrition. It is known that colostrum is paramount to neonate nutrition and passive immunity. Good colostrum management allows the calf to develop coping mechanisms to efficiently utilize feed resources for optimal growth. A deeper understanding of these interactions paves the way for developing strategies to improve immune responses to environmental pathogens, optimal growth and timely attainment of puberty in calves. The literature reviewed here shows that there are opportunities to enhance future performance of cattle paying attention to the interaction of nutrition and immunity at early developmental stages. This then guarantees efficient neonate nutrition and profitable cattle production. Abstract Calf immunity, growth and puberty are important factors affecting heifer productivity. The first four weeks of age are critical for reducing calf morbidity and mortality. It is well documented that colostrum is paramount to neonatal nutrition and passive immunity, however, adaptation to extra-uterine life starts early during embryonic development. Therefore, successful calf rearing strategies are underpinned by adequate maternal nutrition during gestation, and good colostrum management. A deeper understanding of these interactions paves the way for developing strategies to improve immune responses to environmental pathogens, optimal growth and timely attainment of puberty in calves. The literature reviewed here shows that there are opportunities to enhance the future performance of cattle paying attention to the interaction of nutrition and immunity at each developmental stage. Therefore, the objective of this review is to give the reader an overview of interactions between immunity, growth and puberty in dairy calves and highlight how these influence future performances.
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Affiliation(s)
- Claudia L. Cardoso
- Ruminant Health and Production, Department of Production Animal Studies, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, 0110 Pretoria, South Africa;
| | - Ailbhe King
- Department of Clinical Sciences, Ross University School of Veterinary Medicine, Farm Road, 42123 Basseterre, Saint Kitts and Nevis; (A.K.); (A.C.)
| | - Aspinas Chapwanya
- Department of Clinical Sciences, Ross University School of Veterinary Medicine, Farm Road, 42123 Basseterre, Saint Kitts and Nevis; (A.K.); (A.C.)
| | - Giulia Esposito
- RUM&N Sas, Via Sant’Ambrogio, 42123 Reggio Emilia (RE), Italy
- Department of Animal Sciences, Stellenbosch University, 7600 Stellenbosch, South Africa
- Correspondence: ; Tel.: +39-328-973-5009
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Abstract
Passive transport of colostral immunoglobulins is essential for calves to maintain optimal health. There are many factors that influence the absorption of immunoglobulins such as colostrum density, timing of ingestion, volume of colostrum but also the method of feeding. This study compares two manners of feeding calves – the esophageal tube feeder (n = 97) and the nipple bottle (n = 97), and their effect on the number of all absorbed immunoglobulins (IgG, IgM, IgA, IgD, and IgE). It was statistically proven that absorption of immunoglobulins is better with the nipple bottle (P < 0.0001). The feeding of calves through a nipple bottle is more beneficial because the content of total protein is the higher than by the feeding through an esophageal tube feeder.
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Cantor MC, Renaud DL, Costa JHC. Nutraceutical intervention with colostrum replacer: Can we reduce disease hazard, ameliorate disease severity, and improve performance in preweaned dairy calves? J Dairy Sci 2021; 104:7168-7176. [PMID: 33741151 DOI: 10.3168/jds.2020-19654] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 01/29/2021] [Indexed: 01/09/2023]
Abstract
The objective of this randomized clinical trial was to determine if an intervention with colostrum replacer (CR; Premolac Plus, Zinpro; 125 g/d fed for 3 d) or a placebo milk replacer (Cows Match, Land O'Lakes Inc.; 125 g/d for 3 d) following a triggered alarm could ameliorate disease bouts in dairy calves. The alarm was set to detect negative deviations of milk intake (20% reduction) or drinking speed (30% reduction) in relation to a calf's 12-d rolling average feeding behavior. Calves were enrolled on this study (n = 42 CR, n = 42 placebo) when they triggered an alarm from d 14 to 50 on the feeder before weaning. Once calves were enrolled, calves received a bottle of either 125 g of CR or milk replacer mixed with 1 L of water for 3 d. Calves were enrolled on the automated milk feeder at age 4.0 ± 2.0 d (mean ± SD), were offered 10 L/d of the same milk replacer fed as a placebo, and had ad libitum access to calf starter measured by automated feeders. Weaning began at d 50, with 50% reduction of milk replacer across 14 d, and an additional 20% reduction for another 7 d before weaning at d 70. Calves were health scored from birth to 2 wk postweaning (88 ± 2.0 d of age) daily for bovine respiratory disease (BRD) and diarrhea, and were weighed and scored using lung ultrasonography twice weekly. A BRD score ≥5 and an area of consolidated lung ≥3.0 cm2 was considered BRD positive; diarrhea was defined as a watery fecal consistency that sifted through the bedding. The effect of CR on BRD and diarrhea likelihood were calculated with logistic models; the 7 d before and after an alarm were fixed effects, with milk intake as a covariate. A Cox proportional hazards model evaluated the effect of CR on the hazard of being positive for BRD and diarrhea following enrollment, with sex as a fixed effect in the diarrhea model. The effect of CR on average daily gain the week following intervention was evaluated with linear modeling with repeated measures, and birth date was a random effect. After intervention, placebo calves had 1.64 (95% CI: 1.11-2.43) times greater odds of having a BRD bout compared with CR calves for the 7 d following intervention. Moreover, placebo calves had 1.50 (95% CI: 1.11-2.08) times greater odds of having lobar lung consolidation in the 7 d after intervention than CR calves. No difference was found in the likelihood of diarrhea in the 7 d after intervention (odds ratio: 0.91; 95% CI: 0.71-1.16). However, placebo calves had a 2.38 (95% CI: 1.30-4.33) times greater hazard of incurring BRD in the 14 d after intervention. Average daily gain was not associated with an intervention with CR for the 7 d after intervention (placebo: 0.73 ± 0.07 kg/d; CR: 0.70 ± 0.08 kg/d; LSM ± SEM). These results suggest CR may reduce BRD likelihood but did not influence growth in calves offered high allowances of milk. Future research should examine which properties of CR ameliorate BRD in calves.
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Affiliation(s)
- M C Cantor
- Dairy Science Program, Department of Animal and Food Sciences, University of Kentucky, Lexington 40546
| | - D L Renaud
- Department of Population Medicine, University of Guelph, Guelph, Ontario, N1G 2W1, Canada
| | - J H C Costa
- Dairy Science Program, Department of Animal and Food Sciences, University of Kentucky, Lexington 40546.
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Cuervo W, Sordillo LM, Abuelo A. Oxidative Stress Compromises Lymphocyte Function in Neonatal Dairy Calves. Antioxidants (Basel) 2021; 10:antiox10020255. [PMID: 33562350 PMCID: PMC7915147 DOI: 10.3390/antiox10020255] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 01/31/2021] [Accepted: 02/03/2021] [Indexed: 12/02/2022] Open
Abstract
Dairy calves are unable to mount an effective immune response during their first weeks of life, which contributes to increased disease susceptibility during this period. Oxidative stress (OS) diminishes the immune cell capabilities of humans and adult cows, and dairy calves also experience OS during their first month of life. However, the impact that OS may have on neonatal calf immunity remains unexplored. Thus, we aimed to evaluate the impact of OS on newborn calf lymphocyte functions. For this, we conducted two experiments. First, we assessed the association of OS status throughout the first month of age and the circulating concentrations of the cytokines interferon-gamma (IFN-γ) and interleukin (IL) 4, as well as the expression of cytokine-encoding genes IFNG, IL2, IL4, and IL10 in peripheral mononuclear blood cells (PBMCs) of 12 calves. Subsequently, we isolated PBMCs from another 6 neonatal calves to investigate in vitro the effect of OS on immune responses in terms of activation of lymphocytes, cytokine expression, and antibody production following stimulation with phorbol 12-myristate 13-acetate or bovine herpesvirus-1. The results were compared statistically through mixed models. Calves exposed to high OS status in their first month of age showed higher concentrations of IL-4 and expression of IL4 and IL10 and lower concentrations of IFN-γ and expression of IFNG and IL2 than calves exposed to lower OS. In vitro, OS reduced lymphocyte activation, production of antibodies, and protein and gene expression of key cytokines. Collectively, our results demonstrate that OS can compromise some immune responses of newborn calves. Hence, further studies are needed to explore the mechanisms of how OS affects the different lymphocyte subsets and the potential of ameliorating OS in newborn calves as a strategy to augment the functional capacity of calf immune cells, as well as enhance calves’ resistance to infections.
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Weiller MAA, Schmoeller E, Vieira LV, Barbosa AA, de Oliveira Feijó J, Brauner CC, Schmitt E, Corrêa MN, Rabassa VR, Del Pino FAB. Zootechnical and health performance of Holstein x Gir crossbred calves. Trop Anim Health Prod 2021; 53:152. [PMID: 33543399 DOI: 10.1007/s11250-021-02601-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 01/27/2021] [Indexed: 10/22/2022]
Abstract
Crossbreeding is used to increase production and disease resistance in adult animals, and there is no research to assess the performance of animals in the early stages. The aim of this study was to evaluate the zootechnical and health performance of Holstein x Gir calves (½ HG: ½ Dutch ½ Gir and ¾ HG: ¾ Dutch ¼ Gir), from birth to 80 days of age, and compare metabolic parameters between groups. In this sense, calves were monitored for zootechnical parameters; epidemiological indexes such as morbidity, mortality, recurrence of diarrhea, pneumonia, and other diseases; as well as serum concentrations of aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, gamma-glutamyl transferase, total proteins, cholesterol, triglycerides, albumin, urea, and paraoxonase1 (PON1). ¾ HG calves showed higher morbidity for diarrhea and remained with diarrhea for longer compared to ½ HG calves, and this was reflected in the average daily weight gain until the 42nd day, with ½ HG calves performing better. There were no differences regarding passive immune transfer between groups, as well as no differences in morbidity and mortality from pneumonia. Regarding biochemical analyses, a difference was found only in the concentrations of PON1, which were higher in ¾ HG calves. The findings show that blood degree influences the occurrence and duration of diarrhea, negatively impacting the zootechnical performance of the animals. Crossbreeding bulls with zebu cattle can be an alternative to increase calf resistance and reduce diarrhea, thus lowering economic losses and improving animal performance.
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Affiliation(s)
- Maria Amélia Agnes Weiller
- Federal Institute of Science and Technology of Rio Grande do Sul [Instituto Federal de Ciência e Tecnologia do Rio Grande do Sul], Bento Gonçalves, Rio Grande do Sul, Brazil.,Center for Livestock Farming Research, Teaching and Extension [Núcleo de Pesquisa, Ensino e Extensão em Pecuária] (NUPEEC), Federal University of Pelotas [Universidade Federal de Pelotas], Pelotas, RS, Brazil
| | - Evandro Schmoeller
- Center for Livestock Farming Research, Teaching and Extension [Núcleo de Pesquisa, Ensino e Extensão em Pecuária] (NUPEEC), Federal University of Pelotas [Universidade Federal de Pelotas], Pelotas, RS, Brazil
| | - Laura Valadão Vieira
- Center for Livestock Farming Research, Teaching and Extension [Núcleo de Pesquisa, Ensino e Extensão em Pecuária] (NUPEEC), Federal University of Pelotas [Universidade Federal de Pelotas], Pelotas, RS, Brazil.
| | - Antônio Amaral Barbosa
- Center for Livestock Farming Research, Teaching and Extension [Núcleo de Pesquisa, Ensino e Extensão em Pecuária] (NUPEEC), Federal University of Pelotas [Universidade Federal de Pelotas], Pelotas, RS, Brazil
| | - Josiane de Oliveira Feijó
- Center for Livestock Farming Research, Teaching and Extension [Núcleo de Pesquisa, Ensino e Extensão em Pecuária] (NUPEEC), Federal University of Pelotas [Universidade Federal de Pelotas], Pelotas, RS, Brazil
| | - Cássio Cassal Brauner
- Center for Livestock Farming Research, Teaching and Extension [Núcleo de Pesquisa, Ensino e Extensão em Pecuária] (NUPEEC), Federal University of Pelotas [Universidade Federal de Pelotas], Pelotas, RS, Brazil
| | - Eduardo Schmitt
- Center for Livestock Farming Research, Teaching and Extension [Núcleo de Pesquisa, Ensino e Extensão em Pecuária] (NUPEEC), Federal University of Pelotas [Universidade Federal de Pelotas], Pelotas, RS, Brazil
| | - Marcio Nunes Corrêa
- Center for Livestock Farming Research, Teaching and Extension [Núcleo de Pesquisa, Ensino e Extensão em Pecuária] (NUPEEC), Federal University of Pelotas [Universidade Federal de Pelotas], Pelotas, RS, Brazil
| | - Viviane Rohrig Rabassa
- Center for Livestock Farming Research, Teaching and Extension [Núcleo de Pesquisa, Ensino e Extensão em Pecuária] (NUPEEC), Federal University of Pelotas [Universidade Federal de Pelotas], Pelotas, RS, Brazil
| | - Francisco Augusto Burkert Del Pino
- Center for Livestock Farming Research, Teaching and Extension [Núcleo de Pesquisa, Ensino e Extensão em Pecuária] (NUPEEC), Federal University of Pelotas [Universidade Federal de Pelotas], Pelotas, RS, Brazil
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Morin MP, Dubuc J, Freycon P, Buczinski S. A herd-level study on colostrum management factors associated with the prevalence of adequate transfer of passive immunity in Québec dairy herds. J Dairy Sci 2021; 104:4914-4922. [PMID: 33516548 DOI: 10.3168/jds.2020-19476] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 11/10/2020] [Indexed: 01/04/2023]
Abstract
The objective of this study was to identify herd-level colostrum management factors associated with the adequate transfer of passive immunity (TPI; defined as serum Brix refractance ≥8.4% in the first week of life). A total of 59 commercial Holstein dairy farms were included in this observational cross-sectional study. In every participating herd, a minimum of 14 Holstein calves were sampled to measure their TPI using a digital Brix refractometer. Colostrum samples fed to each of these calves were collected to estimate IgG concentration (colostrum quality) using a digital Brix refractometer and bacterial contamination using the Petrifilm (3M, St. Paul, MN) culture system. Dairy producers completed a questionnaire on colostrum management to assess on-farm practices. The study outcome was the prevalence of adequate TPI calculated based on the proportion of adequate TPI (defined with an individual threshold ≥8.4% Brix) on the total samples tested within each herd. According to the threshold determined in a previous study investigating the influencing colostrum management factors to achieve adequate TPI at the calf level, the prevalence of an adequate colostrum volume fed at first meal (≥2.5 L), the prevalence of adequate colostrum quality (≥24.5% Brix), the prevalence of an adequate time to first feeding (delay between birth and the first colostrum meal, ≤3 h), the prevalence of low aerobic bacterial contamination (≤20,000 cfu/mL), the prevalence of low coliform contamination (≤1,000 cfu/mL), and the prevalence of females were calculated. The herd-level prevalence of adequate TPI ranged from 24% to 100%, with a median of 68%. The median herd prevalences of an adequate colostrum volume fed at first meal, of adequate colostrum quality, of an adequate time to first feeding, of low aerobic bacterial contamination, of low coliform contamination, and of females, were 71, 42, 41, 64, 88, and 61%, respectively. In the final model, the prevalence of adequate TPI was associated with the prevalence of an adequate colostrum volume fed at first meal and the prevalence of an adequate time to first feeding. In summary, management practices varied greatly between farms and influenced the prevalence of adequate TPI.
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Affiliation(s)
- M P Morin
- Faculté de médecine vétérinaire, Université de Montréal, 3200 rue Sicotte, St-Hyacinthe, Québec, J2S 2M2, Canada
| | - J Dubuc
- Faculté de médecine vétérinaire, Université de Montréal, 3200 rue Sicotte, St-Hyacinthe, Québec, J2S 2M2, Canada
| | - P Freycon
- Faculté de médecine vétérinaire, Université de Montréal, 3200 rue Sicotte, St-Hyacinthe, Québec, J2S 2M2, Canada
| | - S Buczinski
- Faculté de médecine vétérinaire, Université de Montréal, 3200 rue Sicotte, St-Hyacinthe, Québec, J2S 2M2, Canada.
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Genome wide association study of passive immunity and disease traits in beef-suckler and dairy calves on Irish farms. Sci Rep 2020; 10:18998. [PMID: 33149185 PMCID: PMC7643155 DOI: 10.1038/s41598-020-75870-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 09/03/2020] [Indexed: 01/17/2023] Open
Abstract
Calves with lower concentrations of immunoglobulin G (IgG) in their blood, have a greater risk of developing diseases. There is a lack of knowledge on genetic markers known to be associated with immunological variability or disease resistance. Therefore, the objective of this study was to identify SNP markers associated with passive immunity measures (serum IgG, serum protein, albumin, globulin and total protein concentrations, total solids Brix percentage, zinc sulphate turbidity units) and disease (pneumonia, diarrhoea, crude illness) traits in Irish commercial beef-suckler and dairy calves through genome wide association studies (GWAS). Genotyping was performed on DNA samples from beef-suckler (n = 698) and dairy (n = 1178) calves, using the IDBv3 chip. Heritability of passive immunity associated traits (range 0.02-0.22) and the disease traits (range 0.03-0.20) were low-to-moderate. Twenty-five and fifteen SNPs approached genome wide significance (P < 5 × 10-5) for the passive immunity and the disease traits, respectively. One SNP "ARS-BFGL-BAC-27914" reached Bonferroni genome wide significance (P < 1.15 × 10-6) for an association with serum IgG concentration in beef calves. Further work will evaluate these SNPs in larger cattle populations and assess their contribution to genomic selection breeding strategies, aimed towards producing more disease resistant livestock.
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Pereira LDS, Porto MR, Reis Júnior JL, Rumpf R, Silva Júnior ER, Soto-Blanco B, Câmara ACL, Borges JRJ. Pathological features of cloned calves that died in the neonatal period. PESQUISA VETERINÁRIA BRASILEIRA 2020. [DOI: 10.1590/1678-5150-pvb-6720] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
ABSTRACT: Somatic-cell nuclear transfer is a cloning technique that enables the creation of a viable embryo from a donor adult to produce a genetically identical individual. This technique opens numerous potential possibilities for medicine and animal reproduction. However, several reports have documented cloning-related issues. Embryo and fetal losses remain significantly higher than in other techniques, and there is a high incidence of dystocia and hydrops, which decreases efficiency and increases costs. Animals delivered at term often exhibit a syndrome known as macrosomia and experience difficulties in adapting to life outside the uterus, and death is a common outcome. In the present study, 41 cloned calves that died in the neonatal period were subjected to gross and histopathological examination. Most important gross lesions were found in the liver (enlargement, congestion, yellowish color), kidneys (brownish color at surface and cut, and cysts), lungs (atelectasis, parenchymal consolidation, and secretions in bronchi and bronchioles), and heart (concentric and eccentric hypertrophy, hematic cysts, persistence of ductus arteriosus). Primary microscopic findings were seen in the liver, kidneys, and lungs from neonatal calves. In the liver, 85% of the animals exhibited hepatic degeneration. The presence of a brownish pigment within the cortical tubules of the kidneys was found in approximately 90% of the samples; the presence of this pigment has not been previously reported in cloned calves. In the lungs, a large number of animals exhibiting lesions characteristic of pneumonia (55%). These changes were the pivotal causes of death, mainly due to problems in adapting to life outside the uterus and opportunistic infections in the neonatal period. Further investigation focusing on pathological anatomical changes is necessary to map these abnormalities in cloned animals.
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Affiliation(s)
| | | | | | - Rodolfo Rumpf
- Geneal Genética Animal - Análises, Pesquisa e Laboratórios S/A, Brazil
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Masset N, Meurens F, Marie M, Lesage P, Lehébel A, Brisseau N, Assié S. Effectiveness of two intranasal vaccines for the control of bovine respiratory disease in newborn beef calves: A randomized non-inferiority multicentre field trial. Vet J 2020; 263:105532. [PMID: 32928493 PMCID: PMC7437571 DOI: 10.1016/j.tvjl.2020.105532] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 08/13/2020] [Accepted: 08/16/2020] [Indexed: 02/02/2023]
Abstract
Multicentre field trials with natural pathogen exposure complement challenge trials. Beef calves housed with their dams were assessed for bovine respiratory disease (BRD). Two commercial intranasal live vaccines for BRSV-bPI3V were evaluated. New Vaccine A demonstrated non-inferiority compared to benchmarked Vaccine B. Difference in BRD prevalence between Vaccines A and B was −0.4% (95% CI −1.6 to 0.8%).
Bovine respiratory syncytial virus (BRSV) and bovine parainfluenza-3 virus (bPI3V) are major causes of bovine respiratory disease (BRD) in newborn calves worldwide. Vaccination is widely used to prevent BRD, and intranasal vaccines for BRSV and bPI3V were developed to overcome interference from BRSV and bPI3V-specific maternally derived antibodies. Many experimental challenge trials have demonstrated that intranasal vaccines for BRSV and bPI3V are efficacious, but effectiveness under field conditions has been demonstrated less often, especially for newborn beef calves. The objective of this field trial was to compare the effectiveness of a newly available commercial BRSV-bPI3V intranasal vaccine with that of a benchmarked one in newborn beef calves reared in a cow-calf system. A total of 935 calves from 39 farms were randomized into two vaccine groups (Bovalto Respi Intranasal [Vaccine A], n = 468; Rispoval RS + PI3 Intranasal [Vaccine B], n = 467), and monitored during the in-house risk period up to three months after vaccination. Non-inferiority analysis was performed by calculating the difference in BRD prevalence between the two vaccine groups. No significant differences were observed between vaccines regarding clinical outcomes of morbidity, mortality, duration between vaccination and BRD occurrence, or treatments required. Because the upper limit of the 2-sided 95% confidence interval of the difference in BRD prevalence between the two treatment groups (0.8%) was less than the margin of non-inferiority (δ = 5%), a non-inferiority of Vaccine A was concluded. In conclusion, Vaccine A is at least as effective as Vaccine B for the prevention of BRD in newborn beef cattle in a cow-calf system under field conditions.
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Affiliation(s)
- N Masset
- INRAE, Oniris, BIOEPAR, 44300 Nantes, France; SELAS EVA, Réseau Cristal, 16 Avenue du Général De Gaulle, 79150 Argentonnay, France.
| | - F Meurens
- INRAE, Oniris, BIOEPAR, 44300 Nantes, France
| | - M Marie
- INRAE, Oniris, BIOEPAR, 44300 Nantes, France; SELAS EVA, Réseau Cristal, 16 Avenue du Général De Gaulle, 79150 Argentonnay, France
| | - P Lesage
- INRAE, Oniris, BIOEPAR, 44300 Nantes, France; SELAS EVA, Réseau Cristal, 16 Avenue du Général De Gaulle, 79150 Argentonnay, France
| | - A Lehébel
- INRAE, Oniris, BIOEPAR, 44300 Nantes, France
| | - N Brisseau
- INRAE, Oniris, BIOEPAR, 44300 Nantes, France
| | - S Assié
- INRAE, Oniris, BIOEPAR, 44300 Nantes, France
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Weiller M, Moreira D, Bragança L, Farias L, Lopes M, Bruhn F, Brauner C, Schmitt E, Corrêa M, Rabassa V, Pino FD. The occurrence of diseases and their relationship with passive immune transfer in Holstein dairy calves submitted to individual management in southern Brazil. ARQ BRAS MED VET ZOO 2020. [DOI: 10.1590/1678-4162-11482] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
ABSTRACT Calves are extremely dependent on colostrum intake for the acquisition of passive immunity. This study aimed to determine the occurrence of diarrhea and respiratory diseases and the impact of Failure of Passive Immune Transfer (FPIT) on the health and zootechnical performance of Holstein dairy calves in individual management. This study has been carried out in five commercial farms in Rio Grande do Sul State, Brazil, from March 2017 to January 2018. In this study, 131 calves were followed from birth to 60 days of age. Total Plasmatic Protein (TPP) has been performed to determine passive immune transfer quality in 53 calves (53/131). A daily clinical follow-up has been accomplished aiming at diagnosing diseases and their incidences, and zootechnical measures such as withers height, width of the croup and weight have been evaluated. FPIT rate was 32.07%, diarrhea occurrence and respiratory diseases were 77.9% and 49.6%, respectively. FPIT increased the chances of calves presenting diarrhea and developing respiratory diseases, but no differences on zootechnical performance were found. The frequency of FPIT is still high and is a factor that corroborated the increased risk for diarrhea and respiratory disease but did not influence the performance of calves in the preweaning phase.
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Affiliation(s)
- M.A.A. Weiller
- Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul, Brazil
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Renaud D, Waalderbos K, Beavers L, Duffield T, Leslie K, Windeyer M. Risk factors associated with failed transfer of passive immunity in male and female dairy calves: A 2008 retrospective cross-sectional study. J Dairy Sci 2020; 103:3521-3528. [DOI: 10.3168/jds.2019-17397] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Accepted: 12/08/2019] [Indexed: 11/19/2022]
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Silva B, Baccili C, Pituco E, Gomes V. Efeito dos anticorpos maternos sobre a resposta imune induzida pela vacinação em bezerros Holandeses. ARQ BRAS MED VET ZOO 2020. [DOI: 10.1590/1678-4162-10963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
RESUMO Objetivou-se avaliar o efeito dos anticorpos (ACs) maternos sobre resposta imune humoral induzida pela vacinação em bezerros Holandeses. Bezerros foram distribuídos aleatoriamente em quatro grupos: G1 - vacinados no D14 e D44 (n=6); G2 - vacinados no D90 e D120 (n=5); G3 - vacinados no D180 e D210 (n=8); controle: não vacinado (n=5). Utilizaram-se 5mL de vacina comercial (Cattle Master Gold FP5+L5® - Zoetis, Brasil), por via subcutânea. Foi realizada vírus neutralização (VN) no momento da vacinação, booster e 30 dias após a revacinação. Não foram observadas diferenças entre controle e G1 ou G2 para a frequência de soropositivos ou títulos de ACs contra os vírus respiratórios (P≥0,05). G3 apresentou maior produção de ACs em relação ao controle para BoHV-1 (P<0,01), BRSV (P<0,01) e BPIV-3 (P=0,02) após o booster (D240). A análise no tempo também demonstrou aumento nos títulos de ACs no G3 (P≤0,05). O perfil clínico revelou broncopneumonia apenas no grupo controle (n=4/5) entre 80-135 dias de vida. A imunidade colostral e a vacinal apresentaram perfis inversamente proporcionais, com maior produção de ACs aos seis meses de idade. Devido à precocidade da doença respiratória, estudos complementares são necessários para esclarecer o papel da resposta imune celular na vacinação diante dos ACs maternos.
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Affiliation(s)
| | | | | | - V. Gomes
- Universidade de São Paulo, Brazil
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Roach HB, Brester JL, Abuelo A. Short communication: Effect of granulocyte-macrophage colony-stimulating factor on neonatal calf peripheral blood neutrophil function in vitro. J Dairy Sci 2019; 103:864-870. [PMID: 31733852 DOI: 10.3168/jds.2019-17441] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 09/13/2019] [Indexed: 11/19/2022]
Abstract
Neutrophils are innate immunity cells that represent the first line of cellular defense against invading pathogens. Dairy calves, however, experience neutrophil dysfunction during the first weeks of age, contributing to increased disease susceptibility during this period. Granulocyte-macrophage colony-stimulating factor (GM-CSF) is a cytokine that improves neutrophil function in neonates of other species and mature cows. However, its capability to improve neonatal calf neutrophil function is unknown. Therefore, our objective was to evaluate the effect of GM-CSF on the functional capabilities of neutrophils of neonatal calves in vitro. We hypothesized that supplementation of neonatal neutrophils with GM-CSF would increase microbicidal functions to levels comparable with those of mature immunocompetent cattle. For this, we isolated blood neutrophils from 12 healthy 2- to 3-d-old Holstein calves, and neutrophils from 6 mid-lactation Holstein cows were used as a reference of robust neutrophil function. Subsequently, neutrophils from both calves and cattle were incubated for 9 h with 4 concentrations (0, 0.005, 0.05, or 0.5 µg/mL) of GM-CSF, and microbicidal function of neutrophils was assessed in terms of phagocytosis, respiratory burst, myeloperoxidase (MPO) activity, and extracellular trap formation. Mixed models with Tukey pairwise comparisons were used to identify differences among treatment and age groups. Supplementation of GM-CSF in vitro increased phagocytosis and MPO activity of calf and cow neutrophils, although not in a concentration-dependent manner. Respiratory burst and extracellular trap formation were not affected by GM-CSF supplementation. All the microbicidal capacity functions assessed were lower in neutrophils from calves, but supplementation with GM-CSF increased phagocytosis and MPO activity of calf neutrophils to levels comparable with unsupplemented cow neutrophils. Collectively, our results demonstrated that in vitro supplementation of calf neutrophils with GM-CSF enhanced some functional microbicidal capabilities to levels comparable with immunocompetent cattle. Hence, it may be possible to augment the functional capacity of calf neutrophils in vivo through the therapeutic application of GM-CSF and consequently enhance calves' resistance to infections. This should be tested in future in vivo studies.
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Affiliation(s)
- Harry B Roach
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing 48824
| | - Jill L Brester
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing 48824
| | - Angel Abuelo
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing 48824.
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Vaccinating Calves in the Face of Maternal Antibodies: Challenges and Opportunities. Vet Clin North Am Food Anim Pract 2019; 35:557-573. [PMID: 31590902 DOI: 10.1016/j.cvfa.2019.07.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
A growing body of evidence has shown that calves can mount an immune response when vaccinated in the face of maternal antibodies (IFOMA), albeit inconsistently and often in ways that differ from seronegative calves or older cattle. Several previous reviews have endeavored to explain bovine neonatal immunology and have documented the issue of vaccinating young calves. However, as preweaning vaccination becomes more common in both beef and dairy production systems, so too has research on the impacts of such vaccination programs. This article aims to briefly review the challenges and opportunities for vaccinating calves IFOMA.
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Abstract
Herd immunity is an important concept of epidemic theory regarding the population-level effect of individual immunity to prevent transmission of pathogens. Herd immunity exists when sufficient numbers of animals in a group or population have immunity against an agent such that the likelihood of an effective contact between diseased and susceptible individuals is reduced. Understanding herd immunity requires consideration of infection dynamics, modes of transmission, as well as the acquisition of immunity by individuals in the population. Loss of herd immunity may also explain age-associated epidemics of disease related to loss of passively acquired maternal immunity.
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Affiliation(s)
- David R Smith
- Department of Pathobiology and Population Medicine, Mississippi State University College of Veterinary Medicine, PO Box 9100, 240 Wise Center Drive, Mississippi State, MS 39762, USA.
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Wang M, Schneider LG, Hubbard KJ, Grotelueschen DM, Daly RF, Stokka GS, Smith DR. Beef producer survey of the cost to prevent and treat bovine respiratory disease in preweaned calves. J Am Vet Med Assoc 2019; 253:617-623. [PMID: 30110213 DOI: 10.2460/javma.253.5.617] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To estimate costs associated with prevention and treatment of bovine respiratory disease (BRD) in preweaned calves on US beef cow-calf operations. DESIGN Cross-sectional survey. SAMPLE 43 beef cow-calf producers whose operations had a history of BRD in preweaned calves. PROCEDURES Mail and electronic surveys were developed and administered to producers in Nebraska, North Dakota, and South Dakota to obtain information regarding costs of BRD prevention and treatment. Descriptive statistics were generated. Mixed linear regression models were used to assess factors associated with the costs of vaccines, medicine, and labor and percentage time spent on prevention and treatment of BRD in cows, replacement heifers, and preweaned calves. RESULTS 7 mail and 36 electronic surveys were completed. Median annual costs for BRD vaccines were $2.25, $4.00, and $6.25/animal, and median annual labor costs for vaccination were $4.58, $3.00, and $5.00/animal for cows, heifers, and preweaned calves, respectively. Median annual costs for medicine and labor to treat preweaned calves for BRD were $11.00 and $15.00/ affected calf, respectively. Adjusted mean annual BRD vaccine cost for preweaned calves ($7.67/animal) was significantly greater than that for cows ($3.18/animal) and heifers ($4.48/animal). CONCLUSIONS AND CLINICAL RELEVANCE Results indicated that labor costs associated with BRD vaccination and treatment were similar to or exceeded the cost of vaccines and medicine, and most of those labor costs were associated with gathering and sorting cattle. Therefore, costs associated with labor as well as medicine and vaccines should be considered during the development of BRD prevention and treatment plans.
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Schumaher TF, Cooke RF, Brandão AP, Schubach KM, de Sousa OA, Bohnert DW, Marques RS. Effects of vaccination timing against respiratory pathogens on performance, antibody response, and health in feedlot cattle. J Anim Sci 2019; 97:620-630. [PMID: 30517650 DOI: 10.1093/jas/sky466] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Accepted: 11/30/2018] [Indexed: 11/13/2022] Open
Abstract
Angus × Hereford calves (n = 159; 87 heifers and 72 steers) were ranked by sex, BW, and age, and assigned to one of three vaccination schemes against bovine respiratory disease (BRD): (i) vaccination at weaning (day 0) and revaccination at feedyard arrival (day 30; CON, n = 53), (ii) vaccination 15 d before weaning (day -15) and revaccination 15 d before feedyard arrival (day 15; EARLY, n = 53), and (iii) vaccination 15 d after weaning (day 15) and revaccination 15 d after feedyard arrival (day 45; DELAYED, n = 53). Calves were maintained on pasture from days -15 to 29, transported (day 30) for 480 km to a commercial growing feedyard, and moved (day 180) to an adjacent finishing yard where they remained until slaughter (day 306). Calf BW was recorded on two consecutive days (days -15, -14, 0, 1, 29, 30, 75, 76, 179, and 180), which were averaged for BW gain calculation. Calves were assessed for BRD signs daily from days 0 to 306. Blood samples were collected on days -15, 0, 15, 30, 45, 60, and 75. No treatment effects were detected (P ≥ 0.49) for BW responses and carcass characteristics (P ≥ 0.32). Serum titers against bovine viral diarrhea type 1 were greater (P ≤ 0.05) in EARLY vs. CON and DELAYED from days 15 to 45, and greater (P < 0.01) in CON vs. DELAYED on days 30 and 45. Serum titers against bovine herpesvirus-1 were greater (P < 0.01) in EARLY vs. CON and DELAYED on days 0 and 30, and greater (P < 0.01) in EARLY and CON vs. DELAYED on days 15 and 45. Serum titers against bovine respiratory syncytial virus were greater (P = 0.05) in EARLY vs. CON on day 0, greater (P = 0.04) in CON vs. DELAYED on day 15, and greater (P ≤ 0.03) in EARLY and CON vs. DELAYED from days 30 to 60. Serum titers against parainfluenza3 virus were greater (P ≤ 0.04) in EARLY vs. DELAYED on days 30 and 45, and greater (P < 0.01) in CON vs. DELAYED on day 30. Incidence of BRD was less (P = 0.04) in EARLY vs. CON and DELAYED, and similar (P = 0.99) between CON and DELAYED. Therefore, altering the time of vaccination and revaccination against BRD to provide both doses prior to feedlot entry altered serum antibody responses to BRD pathogens, and alleviated the incidence of this disease in feedlot cattle.
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Affiliation(s)
- Thiago F Schumaher
- Eastern Oregon Agricultural Research Center, Oregon State University, Burns, OR.,School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil
| | - Reinaldo F Cooke
- Department of Animal Science, Texas A&M University, College Station, TX
| | - Alice P Brandão
- Eastern Oregon Agricultural Research Center, Oregon State University, Burns, OR.,Department of Animal Science, Texas A&M University, College Station, TX
| | - Kelsey M Schubach
- Eastern Oregon Agricultural Research Center, Oregon State University, Burns, OR.,Department of Animal Science, Texas A&M University, College Station, TX
| | - Osvaldo A de Sousa
- Eastern Oregon Agricultural Research Center, Oregon State University, Burns, OR.,School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil
| | - David W Bohnert
- Eastern Oregon Agricultural Research Center, Oregon State University, Burns, OR
| | - Rodrigo S Marques
- Eastern Oregon Agricultural Research Center, Oregon State University, Burns, OR
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Cantor MC, Neave HW, Costa JHC. Current perspectives on the short- and long-term effects of conventional dairy calf raising systems: a comparison with the natural environment. Transl Anim Sci 2019; 3:549-563. [PMID: 32704826 PMCID: PMC7200560 DOI: 10.1093/tas/txy144] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 01/04/2019] [Indexed: 11/14/2022] Open
Abstract
Although the neonatal and infancy period is short, it is well documented that the early neonatal environment is critical for appropriate physical, behavioral, and cognitive development that lasts into adulthood. Dairy calves are commonly removed from the dam shortly after birth and raised in individual housing and fed limited milk allowances (4 to 6 L/d) in commercial farms around the world (conventional raising). Individual housing was developed to promote health status and facilitate individual animal monitoring. However, it is associated with high labor demand, and early life social isolation is associated with cognitive and behavioral abnormalities. Recently, group housing and enhanced milk-feeding programs are being increasingly adopted by farms; these practices more closely resemble the social and nutritional environments in natural or seminatural environments when the calf is raised with the dam. Conventional raising may lead to short- and long-term effects when compared to calves raised with the dam or peers. Short-term effects of conventional raising include impaired social skills when introduced to novel peers, reduced consumption of novel feeds, increased activity in a novel environment, and signs of hunger associated with limited milk intake and poor growth during the preweaning period. Evidence also suggests that the long-term effects of conventional artificial raising systems include behavioral differences, such as lower social submissiveness, increased heart rate and cortisol when presented with a novel environment, and production differences such as milk yield and reproductive performance. However, research on the long-term effects of maternal, social, physical, and nutritional restrictions in early life is still limited and should be encouraged. More research is needed to determine the long-term effects of artificial raising systems (individual, group housing, dam-raised) on future behavior, cognition, performance, and health parameters in dairy calves.
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Affiliation(s)
- Melissa C Cantor
- Dairy Science Program, Department of Animal and Food Sciences, University of Kentucky, Lexington, KY
| | - Heather W Neave
- Animal Welfare Program, Faculty of Land and Food Systems, University of British Columbia, Vancouver, BC, Canada
| | - Joao H C Costa
- Dairy Science Program, Department of Animal and Food Sciences, University of Kentucky, Lexington, KY
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Peetsalu K, Tummeleht L, Kuks A, Orro T. Serum amyloid A and haptoglobin concentrations in relation to growth and colostrum intake in neonatal lambs. Livest Sci 2019. [DOI: 10.1016/j.livsci.2019.01.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Sharma P, Hartley CS, Haque M, Coffey TJ, Egan SA, Flynn RJ. Bovine Neonatal Monocytes Display Phenotypic Differences Compared With Adults After Challenge With the Infectious Abortifacient Agent Neospora caninum. Front Immunol 2018; 9:3011. [PMID: 30619358 PMCID: PMC6305741 DOI: 10.3389/fimmu.2018.03011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 12/05/2018] [Indexed: 11/14/2022] Open
Abstract
The neonatal period represents a window of susceptibility for ruminants given the abundance of infectious challenges in their environment. Maternal transfer of immunity does not occur in utero but post-parturition, however this does not compensate for potential deficits in the cellular compartment. Here we present a cellular and transcriptomic study to investigate if there is an age-related difference in the monocyte response in cattle during intra-cellular protozoan infection. We utilized Neospora caninum, an obligate intracellular protozoan parasite that causes abortion and negative economic impacts in cattle worldwide, to study these responses. We found neonatal animals had a significant greater percentage of CD14+ monocytes with higher CD80 cell surface expression. Adult monocytes harbored more parasites compared to neonatal monocytes; additionally greater secretion of IL-1β was observed in neonates. Microarray analysis revealed neonates have 535 genes significantly upregulated compared to adult with 23 upregulated genes. Biological pathways involved in immune response were evaluated and both age groups showed changes in the upregulation of tyrosine phosphorylation of STAT protein and JAK-STAT cascade pathways. However, the extent to which these pathways were upregulated in neonates was much greater. Our findings suggest that neonates are more resistant to cellular invasion with protozoan parasites and that the magnitude of the responses is related to significant changes in the JAK-STAT network.
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Affiliation(s)
- Parul Sharma
- Department of Infection Biology, Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom.,School of Veterinary Medicine and Science, University of Nottingham, Nottingham, United Kingdom
| | - Catherine S Hartley
- Department of Infection Biology, Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom
| | - Manjurul Haque
- Institute of Parasitology, McGill University, Sainte Anne de Bellevue, QC, Canada
| | - Tracey J Coffey
- School of Veterinary Medicine and Science, University of Nottingham, Nottingham, United Kingdom
| | - Sharon A Egan
- School of Veterinary Medicine and Science, University of Nottingham, Nottingham, United Kingdom
| | - Robin J Flynn
- Department of Infection Biology, Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom
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Gonzalez DD, Dus Santos MJ. Bovine colostral cells-the often forgotten component of colostrum. J Am Vet Med Assoc 2018; 250:998-1005. [PMID: 28414597 DOI: 10.2460/javma.250.9.998] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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45
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Medrano-Galarza C, LeBlanc SJ, DeVries TJ, Jones-Bitton A, Rushen J, Marie de Passillé A, Endres MI, Haley DB. Effect of age of introduction to an automated milk feeder on calf learning and performance and labor requirements. J Dairy Sci 2018; 101:9371-9384. [DOI: 10.3168/jds.2018-14390] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 06/04/2018] [Indexed: 11/19/2022]
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Bertagnon HG, Batista CF, Santos KR, Gomes RC, Bellinazzi JB, Della Libera AMMP. Alveolar macrophage functions during the transition phase to active immunity in calves1. J Anim Sci 2018; 96:3738-3747. [PMID: 29982670 DOI: 10.1093/jas/sky261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 06/28/2018] [Indexed: 11/12/2022] Open
Abstract
The first 3 to 6 mo of the life of calves is the period during which active immunity is established. During this period, greater morbidity and mortality is caused by bronchopneumonia because of the immaturity of the pulmonary immune system or the exaggerated cytotoxic response at subsequent infection. The aim of this study was to examine the maturity of the immune system during this phase of activation of acquired immunity in calves. For this purpose, the functions of phagocytosis and the reactive oxygen species (ROS) of alveolar macrophages CD14+ were evaluated. Further, the classes of immunoglobulins and the cytokines implicated in lymphocyte response patterns Th1 and Th2 in 10 healthy Holstein calves were quantified. Samples were taken from calves every 15 d, from the third to the sixth month of life. The alveolar macrophage CD14+ functions increased progressively until 150 d of age (phagocytosis, P = 0.02, ROS, P = 0.05), IgG1 and IgG2 isotype secretion reached an equilibrium, and the cytokine profiles were compatible with the Th1 response. At 165 d of age, there was a decrease in cellular function (phagocytosis P = 0.02, ROS P = 0.04) and an increase in IgG1 titers (P = 0.005) and IL-10 mRNA expression (P = 0.09). At 180 d of life, we observed an IgG1 and IgG2 secretion balance, a decrease in IL-10 mRNA expression, and an increase in IL-12 mRNA (P = 0.04) and tumor necrosis factor (TNF)-α mRNA expressions (P = 0.0003) and alveolar macrophage oxidative metabolism were observed. These results indicate that the calves had an active immune response that was distinctive for the age group. The CD14+ response is more reactive at 150 d. A regulatory and/or humoral response begins at 165 d of life as the equilibrium of Th1 and Th2 profiles is reached at 180 d of life. This may be clinically relevant for the development of specific therapies and prophylactic measures for bronchopneumonia in calves at 135 to 180 d of life.
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Affiliation(s)
- Heloisa G Bertagnon
- Department of Veterinary Medicine, University of Centro Oeste of Parana (UNICENTRO), Guarapuava, PR, Brazil.,Department of Internal Medicine, Faculty of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, SP, Brazil
| | - Camila F Batista
- Department of Internal Medicine, Faculty of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, SP, Brazil
| | - Kamila R Santos
- Department of Internal Medicine, Faculty of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, SP, Brazil
| | - Renata C Gomes
- Department of Internal Medicine, Faculty of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, SP, Brazil
| | - Jessyca B Bellinazzi
- Department of Internal Medicine, Faculty of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, SP, Brazil
| | - Alice Maria M P Della Libera
- Department of Internal Medicine, Faculty of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, SP, Brazil
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48
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Baccili C, Silva C, Baldacim V, Greghi G, Vasconcellos G, Cacciacarro B, Ribeiro C, Gomes V. Influência da vacinação materna na transferência de imunidade passiva contra as viroses respiratórias dos bovinos. ARQ BRAS MED VET ZOO 2018. [DOI: 10.1590/1678-4162-9496] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
RESUMO O objetivo deste estudo longitudinal foi avaliar a influência da vacinação materna na transferência de anticorpos (ACs) contra as viroses respiratórias em bezerros. Para tanto, vacas e bezerros foram distribuídos em dois grupos conforme a realização (VAC, n=6) ou não (NVAC, n=4) da vacinação no pré-parto. Amostras sanguíneas foram obtidas após a parição (D0); em seguida, apenas os bezerros foram acompanhados até D180. ACs séricos foram determinados pela vírus-neutralização (VN) contra BVDV, BoHV-1, BRSV e BPI3-V. Vacas VAC apresentaram diferenças para ACs contra BoHV-1 (P=0,01) em D0. As frequências (%) de bezerros soropositivos para BoHV-1 foram maiores em VAC do D2 ao D120; para BRSV em D4, D8, D10 e D150 (P≤0,08); medianas de ACs contra BoHV-1 em VAC do D2 ao D120 (P=0,08). A vacinação das vacas no pré-parto foi fundamental para a transferência e a duração de ACs contra BoHV-1 e BRSV, porém o protocolo adotado não foi eficiente para o aumento de ACs para BVDV e BPI3-V. A eficácia parcial da vacinação materna não inviabiliza a sua recomendação devido à importância do Herpesvírus e do BRSV na DRB, porém estratégias para a melhoria nas respostas imunes contra as demais viroses devem ser estabelecidas.
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Affiliation(s)
| | | | | | | | | | | | | | - V. Gomes
- Universidade de São Paulo, Brazil
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Bok M, Alassia M, Frank F, Vega CG, Wigdorovitz A, Parreño V. Passive immunity to control Bovine coronavirus diarrhea in a dairy herd in Argentina. Rev Argent Microbiol 2017; 50:23-30. [PMID: 28893529 PMCID: PMC7116951 DOI: 10.1016/j.ram.2017.03.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 01/12/2017] [Accepted: 03/27/2017] [Indexed: 01/12/2023] Open
Abstract
Bovine coronavirus (BCoV) is a viral enteric pathogen associated with calf diarrhea worldwide being, in Argentina, mostly detected in dairy husbandry systems. The aim of the present work was to study if maternal IgG1 antibodies (Abs) to BCoV acquired by colostrum intake modulate the development of BCoV infection in calves reared in a dairy farm in Argentina. Thirty Holstein calves were monitored during their first 60 days of age. Animals were classified into two groups depending on their initial BCoV IgG1 Ab titers. The “failure of passive transfer” (FPT) group had significantly lower IgG1 Abs to BCoV than the “acceptable passive transfer” (APT) group of calves (log10 1.98 vs. 3.38 respectively) (p < 0.0001). These differences were also observed when the total protein levels in both groups were compared (p = 0.0081). Moreover, 71% (5/7) of calves from the FPT group showed IgG1 seroconversion to BCoV compared to 29.4% (5/17) of animals from the APT group. Regarding viral circulation, BCoV was detected in 10% (3/30) of all calves and BCoV IgG1 Ab seroconversion was detected in 42% of the total animals showing that almost half of the calves were infected with BCoV. In conclusion, calves with high titers of specific BCoV IgG1 (≥1024) were mostly protected against viral infection, while animals with low titers of IgG1 (<1024) were mostly infected with BCoV. IgG1 Abs from colostrum origin are critical for prevention of BCoV infection.
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Affiliation(s)
- Marina Bok
- Instituto de Virología, CICVyA, Instituto Nacional de Tecnología Agropecuaria (INTA), Los Reseros y Nicolás Repetto S/N, Castelar, 1712 Buenos Aires, Argentina
| | - Martín Alassia
- Departamento de Producción Lechera, Facultad de Ciencias Agrarias, Universidad Nacional del Litoral, Kreder 2805, 3080 Esperanza, Santa Fe, Argentina
| | - Flavia Frank
- AproAgro S.A., Juan V.B. Mitri 55, S2322EGA, Sunchales, Santa Fe, Argentina
| | - Celina G Vega
- Instituto de Virología, CICVyA, Instituto Nacional de Tecnología Agropecuaria (INTA), Los Reseros y Nicolás Repetto S/N, Castelar, 1712 Buenos Aires, Argentina
| | - Andrés Wigdorovitz
- Instituto de Virología, CICVyA, Instituto Nacional de Tecnología Agropecuaria (INTA), Los Reseros y Nicolás Repetto S/N, Castelar, 1712 Buenos Aires, Argentina
| | - Viviana Parreño
- Instituto de Virología, CICVyA, Instituto Nacional de Tecnología Agropecuaria (INTA), Los Reseros y Nicolás Repetto S/N, Castelar, 1712 Buenos Aires, Argentina.
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