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Prevalence of bovine viral diarrhea virus in dairy cattle herds in eastern China
- Source :
- Tropical Animal Health and Production
- Publication Year :
- 2018
- Publisher :
- Springer Science and Business Media LLC, 2018.
-
Abstract
- 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.
- Subjects :
- China
Veterinary medicine
040301 veterinary sciences
viruses
animal diseases
Persistent infection
Biology
Antibodies, Viral
Virus
Serology
0403 veterinary science
Food Animals
Virus isolation
Prevalence
medicine
Animals
Bulk tank
Bovine viral diarrhea
Genetic typing
Phylogeny
Dairy cattle
Phylogenetic analysis
Diarrhea Virus 1, Bovine Viral
Vaccination
Pestivirus
0402 animal and dairy science
virus diseases
04 agricultural and veterinary sciences
biochemical phenomena, metabolism, and nutrition
Epidemiological investigation
biology.organism_classification
040201 dairy & animal science
Dairying
Diarrhea
Milk
Herd
Bovine Virus Diarrhea-Mucosal Disease
Cattle
Female
Animal Science and Zoology
medicine.symptom
Regular Articles
Subjects
Details
- ISSN :
- 15737438 and 00494747
- Volume :
- 51
- Database :
- OpenAIRE
- Journal :
- Tropical Animal Health and Production
- Accession number :
- edsair.doi.dedup.....f374a925274173b6c5a42c26f07b3388