Heritability and Repeatability for Milk Production Traits of Japanese Holsteins from an Animal Model
نویسندگان
چکیده
منابع مشابه
Heritability and repeatability for milk production traits of Japanese Holsteins from an animal model.
Records of the first three lactations of cows were obtained from the file of the Dairy Herd Testing Association in Hokkaido. The data were divided into 10 files containing approximately 24,000 cows each. The derivative-free REML method was used to estimate variances with a repeatability model. The model contained herd-year, calving month, and the linear and quadratic effects of age at calving a...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 1994
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(94)76987-3