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Masebo NT, Marliani G, Shannon Del Re F, Abram L, Cavallini D, Di Pietro M, Beltrame A, Schiavon E, Bolcato M, Hernandez Bermudez J, Gentile A, Jacinto JGP. Evaluation of antimicrobial and non-steroidal anti-inflammatory treatments for BRD on health and welfare in fattening bulls: a cross-sectional study. Vet Q 2024; 44:1-11. [PMID: 38711265 PMCID: PMC11078067 DOI: 10.1080/01652176.2024.2347928] [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: 10/16/2023] [Accepted: 04/21/2024] [Indexed: 05/08/2024] Open
Abstract
Our study aimed to evaluate the effect of different treatments for BRD on health and welfare in fattening bulls. A total of 264 bulls were enrolled. Welfare was assessed on day 2 (T0) and day 15 (T1) after arrival. A decrease in the welfare level was observed from T0 to T1. All bulls were inspected clinically at T0 and T1 revealing an increase of skin lesions and lameness in T1. In both periods, a high incidence of respiratory disease was observed. A prevalence of 79.55% and 95.45% of Mycoplasma bovis using RT-PCR and culture at T0 and T1 respectively was observed. Blood samples were collected for haematology at T0 and T1. At T0, 36 animals were individually treated for BRD with an antimicrobial (IT), 54 received a metaphylactic treatment with tulathromycin (M), 150 received a metaphylactic treatment with tulathromycin plus a second antimicrobial (M + IT) whereas 24 were considered healthy and therefore not treated (NT). Additionally, 128 were treated with a non-steroid anti-inflammatory (NSAID). Neutrophils of M + IT were significantly higher than groups NT and M and the lymphocytes of M + IT were significantly lower than that of IT. White blood cells, neutrophils and N/L ratio of animals treated with an NSAID was significantly higher than that not treated. Lung inspection of 172 bulls at the abattoir indicated that 92.43% presented at least one lung lesion. A statistically significant effect of the NSAID treatment on the lung lesions was observed. Our findings indicate that BRD was a major welfare and health concern and evidence the difficulties of antimicrobial treatment of M. bovis.
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Affiliation(s)
- Naod Thomas Masebo
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Bologna, Italy
- School of Veterinary Medicine, Wolaita Soddo University, Wolaita Soddo, Ethiopia
| | - Giovanna Marliani
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Bologna, Italy
| | - Flavia Shannon Del Re
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Bologna, Italy
| | - Laura Abram
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Bologna, Italy
| | - Damiano Cavallini
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Bologna, Italy
| | | | | | - Eliana Schiavon
- Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, PD Legnaro, Italy
| | - Marilena Bolcato
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Bologna, Italy
| | - Joaquin Hernandez Bermudez
- Departamento de Patologia Animal, Universidade de Santiago de Compostela Campus Universitario, Lugo, Spain
| | - Arcangelo Gentile
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Bologna, Italy
| | - Joana G. P. Jacinto
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Bologna, Italy
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Wong NST, Malmuthuge N, Gellatly D, Nordi WM, Alexander TW, Ortega-Polo R, Janzen E, Jelinski M, Schwartzkopf-Genswein K. Characterization of the Hoof Bacterial Communities of Active Digital Dermatitis Lesions in Feedlot Cattle. Microorganisms 2024; 12:1470. [PMID: 39065237 PMCID: PMC11278616 DOI: 10.3390/microorganisms12071470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2024] [Revised: 07/03/2024] [Accepted: 07/10/2024] [Indexed: 07/28/2024] Open
Abstract
Digital dermatitis (DD) is a costly hoof infection, causing lameness and pain in feedlot cattle. DD lesions can develop nonlinearly through a series of clinical stages, which can be classified by Dopfer's M-stage scoring system. This widely adopted lesion scoring system recognizes five DD stages, where M1 (early lesion), M2 (acute ulcerative lesion), and M4.1 (chronic proliferative lesion with new developing lesion) are considered active but separate stages of the disease. This study assessed the skin surface microbiota of the active DD lesions of feedlot cattle. The DD lesions from three commercial feedlots were swabbed and then scored according to Dopfer's M-stage scoring system. Swab samples were collected from 12 M2- and 15 M4.1-stage lesions. A total of 21 control swab samples from healthy contralateral feet (DD control) were classified as stage M0. An additional six skin swabs (M0) were collected from completely healthy (CH control) cattle with no lesions. The bacterial communities of active DD lesions (M2 and M4.1) and healthy skin (M0) were profiled using 16S amplicon sequencing. Diversity analyses showed that the hoof bacterial communities of M2 and M4.1 lesions were each distinct from those of M0 skin. However, the bacterial communities between the two active lesion stages were not different from each other. A significant increase in the relative abundance of Spirochaetota and Fusobacteriota and an overall decrease in bacterial diversity contributed to the altered bacterial communities in M2 and M4.1 lesions compared to those of healthy skin (M0). Although stages M2 and M4.1 are considered clinically different stages, the lesion-associated bacterial community is similar between the two active stages.
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Affiliation(s)
- Nicholas S. T. Wong
- Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK S7N 5C9, Canada; (N.S.T.W.); (K.S.-G.)
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada; (N.M.); (T.W.A.); (R.O.-P.)
| | - Nilusha Malmuthuge
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada; (N.M.); (T.W.A.); (R.O.-P.)
| | - Désirée Gellatly
- Technology Access Centre for Livestock, Olds College of Agriculture & Technology, Olds, AB T4H 1R6, Canada
| | - Wiolene M. Nordi
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada; (N.M.); (T.W.A.); (R.O.-P.)
| | - Trevor W. Alexander
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada; (N.M.); (T.W.A.); (R.O.-P.)
| | - Rodrigo Ortega-Polo
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada; (N.M.); (T.W.A.); (R.O.-P.)
| | - Eugene Janzen
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada;
| | - Murray Jelinski
- Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK S7N 5C9, Canada; (N.S.T.W.); (K.S.-G.)
| | - Karen Schwartzkopf-Genswein
- Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK S7N 5C9, Canada; (N.S.T.W.); (K.S.-G.)
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada; (N.M.); (T.W.A.); (R.O.-P.)
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Erickson S, Booker C, Song J, Janzen E, Jelinski M, Schwartzkopf-Genswein K. Epidemiology of Digital Dermatitis in Western Canadian Feedlot Cattle. Animals (Basel) 2024; 14:1040. [PMID: 38612279 PMCID: PMC11011063 DOI: 10.3390/ani14071040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 03/20/2024] [Accepted: 03/25/2024] [Indexed: 04/14/2024] Open
Abstract
Digital dermatitis (DD) is an emerging disease in feedlot cattle. Our objective was to identify animal- and feedlot-level risk factors for DD by analyzing individual animal health records (n = 1,209,883) and feedlot-level records from western Canadian feedlots (n = 28) between 2014 and 2018, inclusive. The risk of a DD diagnosis was higher (incidence rate ratio (IRR) = 2.08, 95% CI 1.52 to 2.86) in cattle sourced from confined background operations (CB) versus cattle sourced from auction markets (AM). Conversely, ranch direct (RD) cattle were (IRR = 0.02, 95% CI 0.04 to 0.30) lower risk than AM cattle of being diagnosed with DD. The risk of being diagnosed with DD was higher in females than in males. The magnitude of the risk in females over males was influenced by annual DD incidence in low morbidity years (2014, 2017, and 2018) (IRR = 2.02, 95% CI 1.27 to 3.19), medium morbidity years (2016) (IRR = 2.95, 95% CI 1.64 to 5.33), and high morbidity years (2015) (IRR = 5.41, 95% CI 3.27 to 8.95). At the feedlot-level, the risk of a diagnosis of DD was lower in small capacity (SCF) versus large capacity feedlots (LCF) (IRR = 0.24, 95% CI 0.05 to 0.76). Future research should focus on identifying factors that may propagate disease transmission between cattle of different sexes and from different acquisition sources.
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Affiliation(s)
- Sarah Erickson
- TELUS Agriculture and Consumer Goods, Okotoks, AB T1S 2A2, Canada; (S.E.); (C.B.); (J.S.); (E.J.)
| | - Calvin Booker
- TELUS Agriculture and Consumer Goods, Okotoks, AB T1S 2A2, Canada; (S.E.); (C.B.); (J.S.); (E.J.)
| | - Jiming Song
- TELUS Agriculture and Consumer Goods, Okotoks, AB T1S 2A2, Canada; (S.E.); (C.B.); (J.S.); (E.J.)
| | - Eugene Janzen
- TELUS Agriculture and Consumer Goods, Okotoks, AB T1S 2A2, Canada; (S.E.); (C.B.); (J.S.); (E.J.)
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB T2N 4Z6, Canada
| | - Murray Jelinski
- Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK S7N 5B4, Canada
| | - Karen Schwartzkopf-Genswein
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada;
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Kostova V, Hanke D, Kaspar H, Fiedler S, Schwarz S, Krüger-Haker H. Macrolide resistance in Mannheimia haemolytica isolates associated with bovine respiratory disease from the German national resistance monitoring program GE RM-Vet 2009 to 2020. Front Microbiol 2024; 15:1356208. [PMID: 38495516 PMCID: PMC10940430 DOI: 10.3389/fmicb.2024.1356208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 02/13/2024] [Indexed: 03/19/2024] Open
Abstract
Data collected from the German national resistance monitoring program GERM-Vet showed slowly increasing prevalence of macrolide resistance among bovine respiratory disease (BRD)-associated Pasteurellacae from cattle over the last decade. The focus of this study was to analyze the genetic basis of antimicrobial resistance (AMR) and the prevalence of multidrug-resistance (MDR)-mediating integrative and conjugative elements (ICEs) in 13 German BRD-associated Mannheimia haemolytica isolates collected between 2009 and 2020 via whole-genome sequencing. Antimicrobial susceptibility testing (AST) was performed via broth microdilution according to the recommendations of the Clinical and Laboratory Standards Institute for the macrolides erythromycin, tilmicosin, tulathromycin, gamithromycin, tildipirosin, and tylosin as well as 25 other antimicrobial agents. All isolates either had elevated MICs or were resistant to at least one of the macrolides tested. Analysis of whole-genome sequences obtained by hybrid assembly of Illumina MiSeq and Oxford Nanopore MinION reads revealed the presence of seven novel Tn7406-like ICEs, designated Tn7694, and Tn7724- Tn7729. These ICEs harbored the antimicrobial resistance genes erm(T), mef (C), mph(G), floR, catA3, aad(3")(9), aph(3')-Ia, aac(3)-IIa, strA, strB, tet(Y), and sul2 in different combinations. In addition, mutational changes conferring resistance to macrolides, nalidixic acid or streptomycin, respectively, were detected among the M. haemolytica isolates. In addition, four isolates carried a 4,613-bp plasmid with the β-lactamase gene blaROB - 1. The detection of the macrolide resistance genes erm(T), mef (C), and mph(G) together with other resistance genes on MDR-mediating ICEs in bovine M. haemolytica may explain the occurrence of therapeutic failure when treating BRD with regularly used antimicrobial agents, such as phenicols, penicillins, tetracyclines, or macrolides. Finally, pathogen identification and subsequent AST is essential to ensure the efficacy of the antimicrobial agents applied to control BRD in cattle.
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Affiliation(s)
- Valeria Kostova
- Institute of Microbiology and Epizootics, Centre for Infection Medicine, School of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
- Veterinary Centre for Resistance Research (TZR), School of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
| | - Dennis Hanke
- Institute of Microbiology and Epizootics, Centre for Infection Medicine, School of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
- Veterinary Centre for Resistance Research (TZR), School of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
| | - Heike Kaspar
- Federal Office of Consumer Protection and Food Safety (BVL), Berlin, Germany
| | - Stefan Fiedler
- Federal Office of Consumer Protection and Food Safety (BVL), Berlin, Germany
| | - Stefan Schwarz
- Institute of Microbiology and Epizootics, Centre for Infection Medicine, School of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
- Veterinary Centre for Resistance Research (TZR), School of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
| | - Henrike Krüger-Haker
- Institute of Microbiology and Epizootics, Centre for Infection Medicine, School of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
- Veterinary Centre for Resistance Research (TZR), School of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
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Scott MA, Woolums AR, Swiderski CE, Finley A, Perkins AD, Nanduri B, Karisch BB. Hematological and gene co-expression network analyses of high-risk beef cattle defines immunological mechanisms and biological complexes involved in bovine respiratory disease and weight gain. PLoS One 2022; 17:e0277033. [PMID: 36327246 PMCID: PMC9632787 DOI: 10.1371/journal.pone.0277033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 10/18/2022] [Indexed: 11/06/2022] Open
Abstract
Bovine respiratory disease (BRD), the leading disease complex in beef cattle production systems, remains highly elusive regarding diagnostics and disease prediction. Previous research has employed cellular and molecular techniques to describe hematological and gene expression variation that coincides with BRD development. Here, we utilized weighted gene co-expression network analysis (WGCNA) to leverage total gene expression patterns from cattle at arrival and generate hematological and clinical trait associations to describe mechanisms that may predict BRD development. Gene expression counts of previously published RNA-Seq data from 23 cattle (2017; n = 11 Healthy, n = 12 BRD) were used to construct gene co-expression modules and correlation patterns with complete blood count (CBC) and clinical datasets. Modules were further evaluated for cross-populational preservation of expression with RNA-Seq data from 24 cattle in an independent population (2019; n = 12 Healthy, n = 12 BRD). Genes within well-preserved modules were subject to functional enrichment analysis for significant Gene Ontology terms and pathways. Genes which possessed high module membership and association with BRD development, regardless of module preservation (“hub genes”), were utilized for protein-protein physical interaction network and clustering analyses. Five well-preserved modules of co-expressed genes were identified. One module (“steelblue”), involved in alpha-beta T-cell complexes and Th2-type immunity, possessed significant correlation with increased erythrocytes, platelets, and BRD development. One module (“purple”), involved in mitochondrial metabolism and rRNA maturation, possessed significant correlation with increased eosinophils, fecal egg count per gram, and weight gain over time. Fifty-two interacting hub genes, stratified into 11 clusters, may possess transient function involved in BRD development not previously described in literature. This study identifies co-expressed genes and coordinated mechanisms associated with BRD, which necessitates further investigation in BRD-prediction research.
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Affiliation(s)
- Matthew A. Scott
- Veterinary Education, Research, and Outreach Center, Texas A&M University and West Texas A&M University, Canyon, TX, United States of America
- * E-mail:
| | - Amelia R. Woolums
- Department of Pathobiology and Population Medicine, College of Veterinary Medicine, Mississippi State University, Mississippi State, MS, United States of America
| | - Cyprianna E. Swiderski
- School of Animal and Comparative Biomedical Sciences, University of Arizona, Tucson, Arizona, United States of America
| | - Abigail Finley
- Veterinary Education, Research, and Outreach Center, Texas A&M University and West Texas A&M University, Canyon, TX, United States of America
| | - Andy D. Perkins
- Department of Computer Science and Engineering, Mississippi State University, Mississippi State, MS, United States of America
| | - Bindu Nanduri
- Department of Comparative Biomedical Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, MS, United States of America
| | - Brandi B. Karisch
- Department of Animal and Dairy Sciences, Mississippi State University, Mississippi State, MS, United States of America
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