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ARS Home » Research » Publications at this Location » Publication #92307


item Wiggans, George
item Powell, Rex
item Norman, H

Submitted to: AIPL Research Reports
Publication Type: Government Publication
Publication Acceptance Date: 5/26/1998
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Changes in the system for calculation of national genetic evaluations for dairy cattle were documented for evaluations released in May 1998. The criteria to determine which evaluations from the International Bull Evaluation Service (Interbull) were changed to allow more Interbull evaluations to be official. The Interbull evaluation is official if it includes more information, and the US based reliability is less than 85%. The bull evaluation output file now contains bulls with identification country codes outside the US and Canada. The frequency of evaluations will remain at 4 per year, after extensive discussion in the industry over the benefit of last years change from 2 evaluations per year. The reliability of the yield evaluations is combined into a single value based on the reliability of the milk, fat, protein dollar index. It was announced that this reliability would replace individual reliabilities for milk and protein on some reports by February 1999.