Estimation of Genetic and Phenotypic Trends of 305-day Milk Yield for Simmentals Reared in Kazova State Farm in Turkey

Ulutaş Z., Sezer M., Saatci M., Sahin A.

KAFKAS UNIVERSITESI VETERINER FAKULTESI DERGISI, vol.16, no.4, pp.533-536, 2010 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 16 Issue: 4
  • Publication Date: 2010
  • Journal Name: KAFKAS UNIVERSITESI VETERINER FAKULTESI DERGISI
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.533-536
  • Ondokuz Mayıs University Affiliated: No

Abstract

This study was conducted to estimate breeding values of 232 Simmental cows for 305-day milk yield calved between 1990 to 2000. Breeding values were obtained for animals by using individual animal model. Although, phenotypic values of 305 day milk yield showed a smooth increasing trend in the examined period, genetic trend has not shown a substantial trend among the years, generally an irregular fluctuation was observed. It is concluded that there was not any standard selection programme in the evaluated Simmental herd reared in Kazova state farm.