Article
Studies on changes of estimated breeding values of U.S. Holstein bulls for final score from the first to second crop of daughters.
Journal of applied genetics - 1 Feb 2011
Koduru V K R, Tsuruta S, Lukaszewicz M, Misztal I, Lawlor T J
Abstract excerpt
The purpose of this study was to find ways of reducing changes of sire predicted transmitting ability for type's final scores (PTATs) from the first to second crop of daughters. The PTATs were estimated from two datasets: D01 (scores recorded up to 2001) and D05 (scores recorded up to 2005). The PTAT changes were calculated as the difference between the evaluations based on D01 and D05. The PTATs were adjusted to...
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