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Petersen MB, Ersbøll AK, Krogh K, Nielsen LR. Increased incidence rate of undesired early heifer departure in Mycoplasma bovis-antibody positive Danish dairy cattle herds. Prev Vet Med 2019; 166:86-92. [PMID: 30935510 DOI: 10.1016/j.prevetmed.2019.03.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 03/12/2019] [Accepted: 03/12/2019] [Indexed: 11/25/2022]
Abstract
Mycoplasma bovis infections cause disease and production losses in cattle worldwide. The long-term consequences are not well described despite being important for management decisions during and after disease outbreaks. We investigated the association between M. bovis antibody-positivity and undesired early departure (UED, i.e. death, euthanasia or slaughter) before first calving in a cohort of 636 heifers from 36 Danish dairy herds with and without a history of M. bovis-associated disease. The herds were visited 4 times at 3-month intervals and blood samples from young stock and milk samples from lactating cows were collected. Poisson regression was performed to examine the association with UED as outcome, logarithmic transformation of risk time as offset and herd as a random effect. Individual antibody measurements and group-level variables representing the infection level among young stock and cows, age and mortality variables were included in the model. The incidence rate ratio of UED increased by 1.23 times for every 10% increase in M. bovis young stock seroprevalence, while the effect of individual antibody level was modified by age and influenced UED less. In conclusion, UED in heifers was associated with M. bovis antibody-positivity in young stock and should be controlled in dairy herds to reduce losses.
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Affiliation(s)
- Mette Bisgaard Petersen
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark.
| | - Annette Kjær Ersbøll
- National Institute of Public Health, University of Southern Denmark, Copenhagen, Denmark
| | - Kaspar Krogh
- Ceva Animal Health A/S, Ladegaardsvej 2, 7100, Vejle, Denmark
| | - Liza Rosenbaum Nielsen
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark
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3
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Bras AL, Suleman M, Woodbury M, Register K, Barkema HW, Perez-Casal J, Windeyer MC. A serologic survey of Mycoplasma spp. in farmed bison ( Bison bison) herds in western Canada. J Vet Diagn Invest 2017; 29:513-521. [PMID: 28578617 DOI: 10.1177/1040638717710057] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Mycoplasma bovis is emerging as an important pathogen of farmed bison in North America and is associated with high morbidity and mortality in affected herds. We developed an in-house ELISA to detect antibodies against Mycoplasma spp. in bison sera. The aims of the study were to estimate the seroprevalence against Mycoplasma spp. in bison herds with or without past history of M. bovis-associated disease, and to determine potential risk factors for seropositivity to Mycoplasma spp. in farmed bison in western Canada. A total of 858 serum samples were collected from bison >1 y of age from 19 bison herds. The individual and herd-level seroprevalence of Mycoplasma spp. was 12% and 79%, respectively. The proportion of seropositive animals was 0-41% and 0-9% for herds with or without a history of M. bovis-associated disease, respectively. Mycoplasma spp. appear to be widespread in bison in Manitoba, Saskatchewan, and Alberta. Eight of 11 herds with no history of M. bovis-associated disease were seropositive for Mycoplasma spp., which suggests that bison can be subclinically infected with Mycoplasma spp., or that infection may be underdiagnosed. Although not specific to M. bovis, the in-house ELISA developed to detect antibodies against Mycoplasma spp. may prove to be a valuable herd-level screening tool, providing insight needed for the development of appropriate prevention and control measures for Mycoplasma-related disease in bison herds.
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Affiliation(s)
- Ana L Bras
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada (Barkema, Bras, Windeyer).,Vaccine and Infectious Disease Organization, International Vaccine Centre (Suleman; Perez-Casal), University of Saskatchewan, Saskatoon, Saskatchewan, Canada.,Department of Large Animal Clinical Sciences, Western College of Veterinary Medicine (Woodbury), University of Saskatchewan, Saskatoon, Saskatchewan, Canada.,Ruminant Diseases and Immunology Research Unit, U.S. Department of Agriculture, Agricultural Research Service, National Animal Disease Center, Ames, IA (Register)
| | - Muhammad Suleman
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada (Barkema, Bras, Windeyer).,Vaccine and Infectious Disease Organization, International Vaccine Centre (Suleman; Perez-Casal), University of Saskatchewan, Saskatoon, Saskatchewan, Canada.,Department of Large Animal Clinical Sciences, Western College of Veterinary Medicine (Woodbury), University of Saskatchewan, Saskatoon, Saskatchewan, Canada.,Ruminant Diseases and Immunology Research Unit, U.S. Department of Agriculture, Agricultural Research Service, National Animal Disease Center, Ames, IA (Register)
| | - Murray Woodbury
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada (Barkema, Bras, Windeyer).,Vaccine and Infectious Disease Organization, International Vaccine Centre (Suleman; Perez-Casal), University of Saskatchewan, Saskatoon, Saskatchewan, Canada.,Department of Large Animal Clinical Sciences, Western College of Veterinary Medicine (Woodbury), University of Saskatchewan, Saskatoon, Saskatchewan, Canada.,Ruminant Diseases and Immunology Research Unit, U.S. Department of Agriculture, Agricultural Research Service, National Animal Disease Center, Ames, IA (Register)
| | - Karen Register
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada (Barkema, Bras, Windeyer).,Vaccine and Infectious Disease Organization, International Vaccine Centre (Suleman; Perez-Casal), University of Saskatchewan, Saskatoon, Saskatchewan, Canada.,Department of Large Animal Clinical Sciences, Western College of Veterinary Medicine (Woodbury), University of Saskatchewan, Saskatoon, Saskatchewan, Canada.,Ruminant Diseases and Immunology Research Unit, U.S. Department of Agriculture, Agricultural Research Service, National Animal Disease Center, Ames, IA (Register)
| | - Herman W Barkema
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada (Barkema, Bras, Windeyer).,Vaccine and Infectious Disease Organization, International Vaccine Centre (Suleman; Perez-Casal), University of Saskatchewan, Saskatoon, Saskatchewan, Canada.,Department of Large Animal Clinical Sciences, Western College of Veterinary Medicine (Woodbury), University of Saskatchewan, Saskatoon, Saskatchewan, Canada.,Ruminant Diseases and Immunology Research Unit, U.S. Department of Agriculture, Agricultural Research Service, National Animal Disease Center, Ames, IA (Register)
| | - Jose Perez-Casal
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada (Barkema, Bras, Windeyer).,Vaccine and Infectious Disease Organization, International Vaccine Centre (Suleman; Perez-Casal), University of Saskatchewan, Saskatoon, Saskatchewan, Canada.,Department of Large Animal Clinical Sciences, Western College of Veterinary Medicine (Woodbury), University of Saskatchewan, Saskatoon, Saskatchewan, Canada.,Ruminant Diseases and Immunology Research Unit, U.S. Department of Agriculture, Agricultural Research Service, National Animal Disease Center, Ames, IA (Register)
| | - M Claire Windeyer
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada (Barkema, Bras, Windeyer).,Vaccine and Infectious Disease Organization, International Vaccine Centre (Suleman; Perez-Casal), University of Saskatchewan, Saskatoon, Saskatchewan, Canada.,Department of Large Animal Clinical Sciences, Western College of Veterinary Medicine (Woodbury), University of Saskatchewan, Saskatoon, Saskatchewan, Canada.,Ruminant Diseases and Immunology Research Unit, U.S. Department of Agriculture, Agricultural Research Service, National Animal Disease Center, Ames, IA (Register)
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5
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Timsit E, Workentine M, Schryvers AB, Holman DB, van der Meer F, Alexander TW. Evolution of the nasopharyngeal microbiota of beef cattle from weaning to 40 days after arrival at a feedlot. Vet Microbiol 2016; 187:75-81. [PMID: 27066712 DOI: 10.1016/j.vetmic.2016.03.020] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 03/15/2016] [Accepted: 03/25/2016] [Indexed: 11/15/2022]
Abstract
Bovine respiratory disease complex (BRDc) is a major cause of morbidity and mortality in beef cattle. There is recent evidence suggesting that the nasopharyngeal microbiota has a key role in respiratory health and disease susceptibility in cattle. However, there is a paucity of knowledge regarding evolution of the nasopharyngeal microbiota when cattle are most likely to develop BRDc (i.e., from weaning to 40days after arrival at a feedlot). The objective was to describe the evolution of the nasopharyngeal microbiota of beef cattle from weaning to 40days after arrival at a feedlot. Deep nasal swabs (DNS) from 30 Angus-cross steers were collected at weaning, on arrival at a feedlot, and at day 40 after arrival. The DNA was extracted from DNS and the hypervariable region V3 of the 16S rRNA gene was amplified and sequenced (Illumina MiSeq platform). Nasopharyngeal microbiota underwent a profound evolution from weaning to arrival at the feedlot and from arrival to day 40, with the abundance of 92 Operational Taxonomic Units (OTUs) significantly changing over time. Mycoplasma (M. dispar and M. bovirhinis) was the most abundant genus in the nasopharynx, accounting for 53% of the total bacterial population. Because an evolving bacterial community may be less capable of resisting colonization by pathogenic bacteria, the instability of the nasopharyngeal microbiota documented in this study might explain why cattle are most likely to be affected with BRDc during the first weeks after weaning and arrival at a feedlot.
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Affiliation(s)
- Edouard Timsit
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada.
| | - Matthew Workentine
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada
| | - Anthony B Schryvers
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada; Faculty of Medicine, University of Calgary, Calgary, AB, Canada
| | - Devin B Holman
- Lethbridge Research Centre, Agriculture and Agri-Food Canada, Lethbridge, AB, Canada
| | - Frank van der Meer
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada
| | - Trevor W Alexander
- Lethbridge Research Centre, Agriculture and Agri-Food Canada, Lethbridge, AB, Canada
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Francoz D, Buczinski S, Bélanger AM, Forté G, Labrecque O, Tremblay D, Wellemans V, Dubuc J. Respiratory pathogens in Québec dairy calves and their relationship with clinical status, lung consolidation, and average daily gain. J Vet Intern Med 2015; 29:381-7. [PMID: 25619524 PMCID: PMC4858077 DOI: 10.1111/jvim.12531] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Revised: 09/25/2014] [Accepted: 11/25/2014] [Indexed: 12/03/2022] Open
Abstract
Background Bovine respiratory disease (BRD) is 1 of the 2 most important causes of morbidity and mortality in dairy calves. Surprisingly, field data are scant concerning the prevalence of respiratory pathogens involved in BRD in preweaned dairy calves, especially in small herds. Objectives To identify the main respiratory pathogens isolated from calves in Québec dairy herds with a high incidence of BRD, and to determine if there is an association between the presence of these pathogens and clinical signs of pneumonia, lung consolidation, or average daily gain. Animals Cross‐sectional study using a convenience sample of 95 preweaned dairy calves from 11 dairy herds. Methods At enrollment, calves were weighed, clinically examined, swabbed (nasal and nasopharyngeal), and lung ultrasonography was performed. One month later, all calves were reweighed. Results Twenty‐two calves had clinical BRD and 49 had ultrasonographic evidence of lung consolidation. Pasteurella multocida, Mannheimia haemolytica, and Histophilus somni were isolated in 54, 17, and 12 calves, respectively. Mycoplasma bovis was identified by PCR testing or culture in 19 calves, and 78 calves were found to be positive for Mycoplasma spp. Bovine coronavirus was detected in 38 calves and bovine respiratory syncytial virus in 1. Only the presence of M. bovis was associated with higher odds of clinical signs, lung consolidation, and lower average daily gain. Conclusions and Clinical Importance Results suggested that nasopharyngeal carriage of M. bovis was detrimental to health and growth of dairy calves in small herds with a high incidence of BRD.
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Affiliation(s)
- D Francoz
- Département des sciences cliniques, Faculté de médecine vétérinaire, Université de Montréal, Saint-Hyacinthe, QC, Canada
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Moore SJ, O'Dea MA, Perkins N, O'Hara AJ. Estimation of nasal shedding and seroprevalence of organisms known to be associated with bovine respiratory disease in Australian live export cattle. J Vet Diagn Invest 2015; 27:6-17. [PMID: 25525134 DOI: 10.1177/1040638714559741] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The prevalence of organisms known to be associated with bovine respiratory disease (BRD) was investigated in cattle prior to export. A quantitative reverse transcription polymerase chain reaction assay was used to detect nucleic acids from the following viruses and bacteria in nasal swab samples: Bovine coronavirus (BoCV; Betacoronavirus 1), Bovine herpesvirus 1 (BoHV-1), Bovine viral diarrhea virus 1 (BVDV-1), Bovine respiratory syncytial virus (BRSV), Bovine parainfluenza virus 3 (BPIV-3), Histophilus somni, Mycoplasma bovis, Mannheimia haemolytica, and Pasteurella multocida. Between 2010 and 2012, nasal swabs were collected from 1,484 apparently healthy cattle destined for export to the Middle East and Russian Federation. In addition, whole blood samples from 334 animals were tested for antibodies to BoHV-1, BRSV, BVDV-1, and BPIV-3 using enzyme-linked immunosorbent assay. The nasal prevalence of BoCV at the individual animal level was 40.1%. The nasal and seroprevalence of BoHV-1, BRSV, BVDV-1, and BPIV-3 was 1.0% and 39%, 1.2% and 46%, 3.0% and 56%, and 1.4% and 87%, respectively. The nasal prevalence of H. somni, M. bovis, M. haemolytica, and P. multocida was 42%, 4.8%, 13.4%, and 26%, respectively. Significant differences in nasal and seroprevalence were detected between groups of animals from different geographical locations. The results of the current study provide baseline data on the prevalence of organisms associated with BRD in Australian live export cattle in the preassembly period. This data could be used to develop strategies for BRD prevention and control prior to loading.
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Affiliation(s)
- S Jo Moore
- School of Veterinary and Life Sciences, Murdoch University, Murdoch, Western Australia, Australia (Moore, O'Hara)Department of Agriculture and Food Western Australia, Australia (O'Dea)AusVet Animal Health Services, Toowoomba, Queensland, Australia (Perkins)
| | - Mark A O'Dea
- School of Veterinary and Life Sciences, Murdoch University, Murdoch, Western Australia, Australia (Moore, O'Hara)Department of Agriculture and Food Western Australia, Australia (O'Dea)AusVet Animal Health Services, Toowoomba, Queensland, Australia (Perkins)
| | - Nigel Perkins
- School of Veterinary and Life Sciences, Murdoch University, Murdoch, Western Australia, Australia (Moore, O'Hara)Department of Agriculture and Food Western Australia, Australia (O'Dea)AusVet Animal Health Services, Toowoomba, Queensland, Australia (Perkins)
| | - Amanda J O'Hara
- School of Veterinary and Life Sciences, Murdoch University, Murdoch, Western Australia, Australia (Moore, O'Hara)Department of Agriculture and Food Western Australia, Australia (O'Dea)AusVet Animal Health Services, Toowoomba, Queensland, Australia (Perkins)
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Fraser BC, Anderson DE, White BJ, Miesner MD, Lakritz J, Amrine D, Mosier DA. Associations of various physical and blood analysis variables with experimentally induced Mycoplasma bovis pneumonia in calves. Am J Vet Res 2014; 75:200-7. [PMID: 24471757 DOI: 10.2460/ajvr.75.2.200] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To determine associations of blood analysis variables and orbit and nasal planum surface temperatures with the onset and severity of Mycoplasma bovis pneumonia in calves. Animals-28 healthy calves. PROCEDURES Calves were challenged with M bovis (n = 24) on day 0 or not challenged (4). Blood samples were obtained for cardiac troponin I, CBC, and serum biochemical analyses on various days. Orbit and nasal planum surface temperatures were determined with infrared thermography on various days. Calves were euthanized, gross necropsies were performed, heart and lung samples were collected for histologic evaluation, and microbial cultures of lung samples were performed on day 14. Pneumonia severity was categorized as mild (< 10% lung consolidation) or moderate (≥ 10% lung consolidation). Associations between measured variables and severity of pneumonia or sample collection day were determined. RESULTS Plasma cardiac troponin I concentration for the 28 calves was significantly higher on day 14 than it was on day 0 or 7 (least squares mean, 0.02, 0, and 0 ng/mL, respectively). No other variables changed significantly during the study. No substantial gross or histologic abnormalities were identified in cardiac muscle samples. Day 14 plasma fibrinogen concentration was significantly different between calves with mild pneumonia and those with moderate pneumonia (mean, 0.44 and 0.74 g/dL, respectively). Calves with moderate pneumonia had significantly lower least squares mean surface temperature of the dorsal aspect of the nasal planum (18.7°C) versus calves with mild pneumonia (22.9°C). CONCLUSIONS AND CLINICAL RELEVANCE Results indicated the evaluated variables had low value for assessment of bovine respiratory disease complex in calves.
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Affiliation(s)
- Brandon C Fraser
- Department of Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506
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