Effect of persistent bvdv infection on some reproductive parameters of dairy cows
2008
Ceylan, Ahmet | Tan, Mehmet Tolga | Karaoglu, Taner | Serin, Ilker
The prevalence of persistently infected animals due to bovine viral diarrhea virus (BVDV) and the effect of persistent bovine viral diarrhea virus infection on some reproductive parameters of 228 cows in four herds in Aydin province were studied. The overall prevalence of persistently infected cattle with BVDV was 3.9% (0.9 - 7.4). The average age at first calving, calving interval and the number of artificial inseminations per cow for the persistently infected animals were 933 ± 88 days, 448 ± 35 days and 1.9 the same parameters for the remaining cows of the herds were 841 ± 72 days, 397 ± 31 days and 1.8 respectively. The data obtained support the view that BVD virus has a negative effect on the reproductive parameters.
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