The effect of subclinical bovine herpesvirlis 1 infection on fertility of cows and heifers


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Ata A., Kale M., Yavru S., Bulut O., Buyukyoruk U.

ACTA VETERINARIA-BEOGRAD, vol.56, pp.267-273, 2006 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 56
  • Publication Date: 2006
  • Doi Number: 10.2298/avb0603267a
  • Title of Journal : ACTA VETERINARIA-BEOGRAD
  • Page Numbers: pp.267-273

Abstract

The aim of this study was to determine the serological prevalence of bovine herpesvirus 1 (BHV-1), and describe whether natural subclinical infections will lead to fertility losses in dairy cows and heifers in Burdur, Turkey. BHV-1 prevalence was 11.94% (201/24) and 14.60% (89/13) in cows and heifers, respectively. Conception rate (CR) was higher in BHV-1 serologically negative cows (38.98%) than BHV-1 positive cows (33.33%) but the difference was statistically insignificant (P > 0.05). However, CR was higher (P > 0.05) in BHV-1 serologically positive heifers (84.61%) than BHV-1 negative heifers (56.57%). Average open days period (OD) of BHV-1 serologically positive cows (99.3 +/- 16 d) was different from BHV-1 negative cows (82.0 +/- 3.8 d) (P < 0.05). Average for the first service (FSA) of BHV-1 serologically positive heifers (18.01 +/- 1.1 mo) did not differ from BHV-1 negative heifers (18.0 +/- 0.3 mo) (P > 0. 05). Results of the current study showed that BHV-1 serologically positive cows have required for successful conception about 17 days more than negative cows.