Alternatives for examining daughter performance of progeny-test bulls between official evaluations
نویسندگان
چکیده
منابع مشابه
Alternatives for examining daughter performance of progeny-test bulls between official evaluations.
In August 2007, the USDA changed from calculating official genetic evaluations quarterly to triannually in conjunction with the schedule change for international evaluations. To offset part of the delay in providing genetic information because of the reduced frequency of official evaluations, industry cooperators requested that interim evaluations be initiated for progeny-test (PT) bulls based ...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 2009
ISSN: 0022-0302
DOI: 10.3168/jds.2008-1728