An investigation on milk yield and reproductive performance of Holstein Friesian cows in Kocas state farm 1. Milk yield traits Koçaş tarim işletmesi'nde yetiştirilen Siyah-Alaca siǧirlarin süt ve döl verimleri üzerine bir araştirma 1. Süt verim özellikleri

Duru S., Tuncel E.

Turkish Journal of Veterinary and Animal Sciences, vol.26, no.1, pp.97-101, 2002 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 26 Issue: 1
  • Publication Date: 2002
  • Journal Name: Turkish Journal of Veterinary and Animal Sciences
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.97-101
  • Keywords: Holstein-Friesian, milk yield, lactation length, lactation milk yield, 305-day milk yield
  • Bursa Uludag University Affiliated: Yes

Abstract

This research was conducted to determine the characteristics of milk yield of Holstein Friesian cows raised at Kocas state farm in Central Anatolia. The material of the research was 970 lactation records of 362 dairy cows raised from 1988 to 1995 at Kocas state farm. Statistical analysis of the records was conducted with the Minitab version 9.2 computer program. Significant differences between groups were determined by the method of Least Significant Difference (LSD). The general mean values of lactation length, lactation milk yield and 305 day milk yield were respectively 304.4±1.39 days, 4966±32.96 kg and 4784±27.35.