Herd-level risk factors for bovine viral diarrhea infection in cattle of Tamil Nadu

Kumar, Subbiah Krishna; Palanivel, K.M.; Sukumar, K.; Ronald, B.S.M.; Selvaraju, G.; Ponnudurai, G.

doi:10.1007/s11250-017-1497-z

Cited by 8 publications

(5 citation statements)

References 23 publications

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“…Risk factors from the animal include age, breed, lactation, and pregnancy status [ 19 , 20 ]. Farm-level factors include farming intensity, herd size, type of mating, housing patterns, and even the distance between the manure pit and the farm [ 18 , 19 , 29 ]. In the present study, some of these were initially identified as risk factors with independent Chi-square tests (e.g., the existence of corrals in the farm, and use of mechanical milking), although none of them were significant under the multivariate logistic regression analysis.…”

Section: Discussionmentioning

confidence: 99%

“…The studies of Aragaw et al [19] and Kumar et al [29] suggested that small size of the herd might protect against BVDV transmission due to a higher self-clearance. Extensive pastoral farming has also been associated with a lower seroprevalence of BVDV [18], which is explained by the reduced stocking rate on the paddocks and often a lower density of cattle in the facilities of the production system.…”

Section: Discussionmentioning

confidence: 99%

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Prevalence and risk factors of bovine viral diarrhea in Colombian cattle

Ortega

Sarmiento

Tobón³

et al. 2020

Vet World

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Background and Aim: Bovine viral diarrhea virus (BVDV) is present in most cattle-raising countries around the world, and it has a negative economic impact in cattle herds. In Colombia, previous studies have estimated the prevalence of BVDV in specific locations. The aim of this study was to estimate the prevalence of BVDV in cattle herds located at several municipalities across the country and to identify the associated risk and protective factors. Materials and Methods: A cross-sectional study was carried out to investigate the prevalence of BVDV in Colombian cattle populations at farm and animal-levels. A total of 387 herds and 8110 animals located in seven different departments were included in this study. Results: An animal- and farm-level prevalence of 36% and 69%, respectively, were estimated. A high variation for the farm-level prevalence was found among the municipalities studied. Moreover, seropositive cattle to the infectious bovine rhinotracheitis virus (odds ratio (OR)=2.38, p=0.0479) and Neospora caninum (OR=3.15, p=0.0122) were more likely to be seropositive for BVDV, while the practice of burning dead animals at the farm was identified as a protective factor (OR=0.17, p=0.014). Conclusion: The prevalence of BVDV varied more at farm-level compared to animal-level. Two risk factors and one protective factor were identified. The results of the current study are essential to understand the epidemiology of BVDV in Colombia, and to formulate strategies in the region to mitigate the impact of this virus on the productive and reproductive indicators of cattle farms at the regional level.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Prevalence and risk factors of bovine viral diarrhea in Colombian cattle

Ortega

Sarmiento

Tobón³

et al. 2020

Vet World

View full text Add to dashboard Cite

show abstract

“…Risk factors from the animal include age, breed, lactation, and pregnancy status [19,20]. Farmlevel factors include farming intensity, herd size, type of mating, housing patterns, and even the distance between the manure pit and the farm [18,19,29]. In the present study, some of these were initially identified as risk factors with independent Chi-square tests (e.g., the existence of corrals in the farm, and use of mechanical milking), although none of them were significant under the multivariate logistic regression analysis.…”

Section: Discussionmentioning

confidence: 99%

August-2020

2020

Vet World

View full text Add to dashboard Cite

Background and Aim: Bovine viral diarrhea virus (BVDV) is present in most cattle-raising countries around the world, and it has a negative economic impact in cattle herds. In Colombia, previous studies have estimated the prevalence of BVDV in specific locations. The aim of this study was to estimate the prevalence of BVDV in cattle herds located at several municipalities across the country and to identify the associated risk and protective factors. Materials and Methods:A cross-sectional study was carried out to investigate the prevalence of BVDV in Colombian cattle populations at farm and animal-levels. A total of 387 herds and 8110 animals located in seven different departments were included in this study.Results: An animal-and farm-level prevalence of 36% and 69%, respectively, were estimated. A high variation for the farm-level prevalence was found among the municipalities studied. Moreover, seropositive cattle to the infectious bovine rhinotracheitis virus (odds ratio (OR)=2.38, p=0.0479) and Neospora caninum (OR=3.15, p=0.0122) were more likely to be seropositive for BVDV, while the practice of burning dead animals at the farm was identified as a protective factor (OR=0.17, p=0.014). Conclusion:The prevalence of BVDV varied more at farm-level compared to animal-level. Two risk factors and one protective factor were identified. The results of the current study are essential to understand the epidemiology of BVDV in Colombia, and to formulate strategies in the region to mitigate the impact of this virus on the productive and reproductive indicators of cattle farms at the regional level.

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“…BVDV infection has a global distribution and affects animal health and reproductive performance, resulting in significant economic losses. Recently, the prevalence study of BVDV in cows has been determined worldwide (Amelung et al 2018;Aragaw et al 2018;Evans et al 2018;Khodakaram-Tafti and Farjanikish 2017;Kumar et al 2018;Ochirkhuu et al 2016). In China, the disease was firstly reported in the 1980s of the last century Fulton 2009), and most of the investigations concerning BVDV infection were seldom published internationally (Deng et al 2015).…”

Section: Discussionmentioning

confidence: 99%

“…In Ethiopia, seroreaction to BVDV antigens was detected in 32.6% of the 1379 cattle and 69.8% of the 149 herds sampled (Aragaw et al 2018). Within herd of Tamil Nadu, BVDV seroprevalence was 12-65% (Kumar et al 2018). In suburb of Mashhad-Iran, the seroprevalence of BVDV infection in industrial dairy cattle herds was 72.25% (Talebkhan Garoussi et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Prevalence of bovine viral diarrhea virus in dairy cattle herds in eastern China

Hou

Zhao

Wang

et al. 2018

Trop Anim Health Prod

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Bovine viral diarrhea virus (BVDV) is a worldwide spreading pestivirus affecting cattle and other ruminants; however, there have been few reports on epidemiologic investigation of BVDV in eastern China. In this study, bulk tank milk from 36 herds of dairy cattle in eastern China was submitted to serological investigations, 77.8% of herds was BVDV antibody positive. Individual animal status in two herds was further investigated collecting blood samples, the positive ratio was 49.74% and 24.64%, and the average positive ratio of calves, heifers, and lactating cows was 15.94%, 40.16%, and 41.7%, respectively. Moreover, clinical survey was carried out among 8170 dairy cattle from 36 herds, for diarrhea syndrome, respiratory problems and reproductive failure, and pathogens of all clinical cattle were further investigated. The results showed that BVDV was one of the main pathogen, which infected animals combining with various other viruses. Then, nine BVDV strains were isolated; phylogenetic analysis showed that BVDV subtypes currently circulating in eastern China were BVDV 1a and BVDV 1c. In addition, out of 377 cows tested, the 1.86% detected positive to the BVDV antigen. This study provided the foundation of further study on vaccination and control strategies of BVDV in eastern China.

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Herd-level risk factors for bovine viral diarrhea infection in cattle of Tamil Nadu

Cited by 8 publications

References 23 publications

Prevalence and risk factors of bovine viral diarrhea in Colombian cattle

Prevalence and risk factors of bovine viral diarrhea in Colombian cattle

August-2020

Prevalence of bovine viral diarrhea virus in dairy cattle herds in eastern China

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