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eBook details

• Title: Prevalence of Bovine Viral Diarrhea Virus Persistency in 12 Holstein Cattle Dairy Herds of Charlottetown, Canada (Report)
• Author : Pakistan Journal of Zoology
• Release Date : January 30, 2011
• Genre: Life Sciences,Books,Science & Nature,
• Pages : * pages
• Size : 193 KB

Description

Byline: Arfan Ahmad, Masood Rabbani, Khushi Muhammad, Muhammad Zubair Shabbir, Tahir Yaqub, Khalid Munir, Fariha Akhter and Arnost Cepica Abstract.- The prevalence of bovine viral diarrhea virus (BVDV) persistency was examined in 12 Holstein dairy herds in Charlottetown, Canada, from Feb. 2009 to Oct. 2009. A total of 469 serum and ear notch biopsy pairs were collected. Depending upon the age and vaccination status, the sampled animals were divided into three groups, A, B1 and B2. Group A consisted of 146 animals originating from 4 herds ([?] 6 month of age, FN1, FN2, FN3, FN4), group B1 comprised 267 animals representing 5 vaccinated herds against BVDV ([greater than or equal to] 6 months of age, FV1, FV2, FV3, FV4, FV5), whereas, 56 samples were taken from 3 BVDV non-vaccinated herds of group B2 ([greater than or equal to] 6 months of age, FN5, FN6, FN7). All the animals were pre-screened through serum neutralization test (SNT), whereas, all ear notch biopsies of group A (n =146) and only of those animals of group B1 (n = 15) and B2 (n = 37) which had SN titer [?] 1:64 were processed to confirm the BVDV persistent infection.

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