RELATIONSHIP BETWEEN PEDIGREE INDEX AND PROGENY PERFORMANCE FOR CANADIAN DAIRY BULLS
نویسندگان
چکیده
منابع مشابه
Selection of Sahiwal Cattle Bulls on Pedigree and Progeny
The objective of the study was to compare ranking of Sahiwal bulls selected on the basis of highest lactation milk yield of their dams with their estimated breeding values (EBVs) using an animal model. Data on 23,761 lactation milk yield records of 5,936 cows from five main Livestock Experiment Stations in Punjab province of Pakistan (1964-2004) were used for the study. At present the young A.I...
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15 صفحه اولAlternatives 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: Canadian Journal of Animal Science
سال: 1976
ISSN: 0008-3984,1918-1825
DOI: 10.4141/cjas76-085