ÖZET : Atatürk Üniversitesi Ziraat Fakültesi Çiftliğinde yetiştirilen Esmer sığırların süt verimindeki genetik yönelimi tahmin etmek amacıyla, 1985-1994 yılları arasında yetiştirilmiş olan 237 Esmer ineğe ait 546 laktasyon kaydı analiz edilmiştir. Sürüde 305 günlük süt verimi ortalaması, 2764 ± 39 kg olarak gerçekleşmiştir. Süt veriminde sağlanan çevresel yönelimi tahmin için aynı hayvanların birbirini izleyen verimleri kullanılmıştır. Esmer sığır sürüsünde süt verimindeki fenotipik, çevresel ve genetik yönelimler sırasıyla 124.28, 37.42 ve 86.86 kg/yıl olarak belirlenmiştir.
GENETIC AND PHENOTYPIC TRENDS IN THE MILK YIELD OF
BROWN SWISS CATTLE REARED IN THE RESEARCH FARM OF AGRICULTURAL COLLEGE AT ATATÜRK UNIVERSITY
SUMMARY : Five hundred fortysix lactation records of 237 Brown Swiss cattle were analysed in order to estimate the genetic trend in the milk yield of Brown Swiss cattle reared in the Research Farm of Agricultural College at Atatürk University between 1985 and 1994. Average 305-days milk yield were found as 2764 ± 39 kg. The subsequent production records of dairy cattle were used to estimate the environmental trend in the milk yield. The phenotypic, environmental and genetic trends in the milk yield for the Brown Swiss herd were computed as 124.28, 37.42 and 86.86 kg/year respectively.
Primary Language | tr;en |
---|---|
Journal Section | ARAŞTIRMALAR |
Authors | |
Publication Date | April 12, 2013 |
Published in Issue | Year 1998 Volume: 29 Issue: 2 |
Articles published in this journal are published under the Creative Commons International License (https://creativecommons.org/licenses/by-nc/4.0/). This allows the work to be copied and distributed in any medium or format provided that the original article is appropriately cited. However, the articles work cannot be used for commercial purposes.
https://creativecommons.org/licenses/by-nc/4.0/