Evaluations of Holstein Bulls and Cows in Ecuador
نویسندگان
چکیده
منابع مشابه
Evaluations of Holstein Bulls and Cows in Ecuador
Adjustment factors for age and month of calving were developed from Holstein lactation m r d s in Ecuador. Age factors were similar to those in the United States, but calendar month effects were small, apparently because of uniform feeding and management as the result of a similar climate throughout the year. Genetic evaluations were computed with the USDA animal model system but without identi...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 1990
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(90)79027-3