Seroprevalence of BVDV in crossbred dairy cattle in Bangladesh

Published online 2017 Aug 12. doi: 10.14202/vetworld.2017.906-913

Mohammed Arif Uddin,1,2 A. S. M. Lutful Ahasan,3 Kamrul Islam,2,4,5 Md. Zohorul Islam,2 Altaf Mahmood,6 Ariful Islam,4,7 Kazi Muhammad Fakhrul Islam,8 and Abdul Ahad2

  • 1Department of Livestock Services, Ministry of Fisheries and Livestock, Government of the People’s Republic of Bangladesh, Bangladesh 2Department of Microbiology and Veterinary Public Health, Faculty of Veterinary Medicine, Chittagong Veterinary and Animal Sciences University, Bangladesh 3Department of Anatomy and Histology, Faculty of Veterinary Medicine, Chittagong Veterinary and Animal Sciences University, Bangladesh 4Institute of Epidemiology, Disease Control and Research (IEDCR), Mohakhali-1212, Dhaka, Bangladesh 5Institute of Veterinary, Animal and Biomedical Sciences, Massey University, New Zealand 6Department of Livestock and Dairy Development, Government of Punjab, Punjab, Pakistan 7EcoHealth Alliance, New York, USA 8Department of Physiology, Biochemistry and Pharmacology, Faculty of Veterinary Medicine, Chittagong Veterinary and Animal Sciences University, Bangladesh

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The overall seroprevalence of BVDV in the study area was 51.1% (95% confidence interval [CI], 40.5-61.5). Among different physiological stages of animals, the highest 57.1% (95% CI, 42.2-71.2) prevalence was in case of non-pregnant animals. Aborted cows were found to be significantly (p<0.05) more seropositive 77.8% (95% CI, 52.4-93.6) than the non-aborted cows (77.8%, 95% CI, 52.4-93.6, compared to 44.7%, 95% CI, 33.3-56.6, respectively). Cows having the history of retained placenta were found more positive than without the history of retained placenta (63.2%, 95% CI, 38.4-83.7, compared to 54.7%, 95% CI, 40.4-68.4, respectively). Among the animals of different age groups, BVDV seroprevalence was higher 61.3% (95% CI, 42.2-78.2) in animals of more than 3 years up to 5 years, whereas 32% was in case of 0-1-year-old. Significant variation found in different geographical areas of the study area. Hematological analyses have shown variation between the BVDV positive and negative animals.