Research on various testing procedures and different methods of estimating lactation milk yield in dairy cattle
Makaleler > Tam Makale · 2002
Yazarlar: ATTİLA KAYA, Can UZMAY, YAVUZ AKBAŞ, İbrahim KAYA, SENCER TÜMER
TURKISH JOURNAL OF VETERINARY & ANIMAL SCIENCES, SCI Expanded İndekslerine Giren Dergi, Uluslararası, 2002, cilt 26, ss 193-199
Özet
This research was carried out to determine the effect of various milk sampling intervals and different methods on the accuracy of estimation of lactation milk yield in dairy cattle. Individual daily milk weights of 599 Holstein, Simmental and Brown Swiss lactations from the Aegean Agricultural Research Institute were used. It was assumed that test-day milk yields were obtained by regular and irregular intervals of 28 d and 56 d, with the irregular intervals having a standard deviation of 5 d. From test-day milk yields, 305 d milk yields were estimated by the Holland (Lactation yield = mean of test day yields x lactation duration (days)) and Test Interval methods.