Estimates of Genetic Trends for 305-Days Milk Yield in Holstein Friesian Cattle


Bakir G., KAYGISIZ A., Cilek S.

JOURNAL OF ANIMAL AND VETERINARY ADVANCES, vol.8, no.12, pp.2553-2556, 2009 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 8 Issue: 12
  • Publication Date: 2009
  • Journal Name: JOURNAL OF ANIMAL AND VETERINARY ADVANCES
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.2553-2556

Abstract

The purpose of this study was to estimate the trends components of 305-days milk yield in Holstein Friesian Cattle Holstein cows raised at the Ceylanpinar state farm in Turkey between 1986 and 2007 years. The phenotypic, genetic and environmental trends for 305-days milk yield were found to be 106.91, 13.42 and 93.49 kg year(-1), respectively. Despite, there was a correct decision in selection environmental factors affected yield more. In this respect, continuing the improving environmental factors which is composed of maintenance, feeding, milking practices and barn is recommended.