Age-Month Adjustment Factors for Milk, Fat, and Protein Yields in Holstein Cattle
نویسندگان
چکیده
منابع مشابه
an estimation of genetic parameters and trends for milk and fat yields and fat percentage for holstein dairy cattle in khorasan province using univariate and repeatability animal models
genetic parameters and trends for milk and fat yields as well as for fat percentage were estimated from 35,438 milk production records (305d, 2x) of 17,971 holstein dairy cattle in 133 herds during the period of 1990-2003 in khorasan province. variance components were estimated using restricted maximum likelihood statistical method applying univariate and repeatability animal models. for the un...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 1985
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(85)81151-6