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젖소의 60일유량 , 최고유량 , 최고유량 도달일수와 305일유량에 관한 유전성분 분석
안병석(B . S . Ahn),정하연(H . Y . Chung),이현준(H . J . Lee),고문석(M . S . Ko),김내수(N . S . Kim) 한국축산학회 1994 한국축산학회지 Vol.36 No.6
This study was carried out to estimate the genetic parameters on milk yield for 60 days and 305 days, peak milk yield and days at peak production. The data from a total of 532 head which were tested at the National Animal Breeding Institute from 1992 to 1993 was analyzed. The heritabilities for 60 day and 305 day milk yield were 0.65 and 0.34, while those for peak milk yield and days at peak production were 0.69 and 0.06. respectively. The genetic correlations between 60 days and 305 days milk yield, between peak milk yield and 60 day milk yield, and the interval between days at peak production and 60 day milk yield were 0.50. 0.99 and 0.05. respectively. Also the interval between 305 day milk yield and peak milk yield days, between 305 day milk yield and days at peak production, and between peak rink yield and days at peak production were 0.41, 0.68 and 0.26, respectively.