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Title: CHANGES IN USDA-DHIA GENETIC EVALUATIONS (NOVEMBER 1998)

Author
item NORMAN, H
item WIGGANS, GEORGE
item POWELL, REX

Submitted to: AIPL Research Reports
Publication Type: Government Publication
Publication Acceptance Date: 11/23/1998
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Changes in procedures for November 1998 national genetic evaluations for yield traits of dairy cattle were documented. Bull evaluations from the International Bull Evaluation Service (Interbull) now are posted on the Animal Improvement Programs Laboratory's (AIPL's) file transfer protocol server as soon after noon and before 2 p.m. on release day as possible. Official Interbull replacements evaluations in format 38 are provided in an update file and in a complete file of official U.S. bull evaluations. The format-38 bull evaluation has been extended to include 1) percentage of daughters from the U.S., 2) usability code (evaluation source), 3) registered Holstein herdbook identifier, and 4) a list of recessive codes. Evaluations of cows with a 1st-lactation record from an owner-sampler (OS) test plan are included for the first time in the format-105 cow evaluation file. For daughters of cows with an OS evaluation, a code or footnote indicates that their dams had lactation records that were predominantly from OS testing. Lactation records are distributed quarterly in format 4T and contain test-day data provided by the processing centers for completed lactation records. Rejected and modified records are returned to the provider in formats 4TE and 1NE. A recent enhancement of the AIPL web site allows cooperators to view rejected records for individual cows through a query based either on the cow's identification number or on the herd code plus the cow's control number. To facilitate error requests, cooperators also can submit queries for multiple animals by uploading a file of animal identification numbers. Understanding by the dairy industry of changes in procedures for genetic evaluations promotes appropriate use and acceptance of released information, thereby advancing genetic progress.