Comparison of fitting performance of random regression models to test day milk yields in Holstein Friesians.

Recently, test day models have been suggested for genetic evaluation of test day milk yields, instead of using 305 day milk yields . Since the correct description of factors for each individual test day milk yield is possible, a higher genetic progress should be expected . Accuracy of genetic evaluations depends on the amounts of information used and methods. For analysis of test day milk yields, several types of models are applied such as Kafkas Univ Vet Fak Derg 15 (2): 261-266, 2009 DOI:10.9775/kvfd.2008.138-A RESEARCH ARTICLE