Article
Factors associated with frequency of abortions recorded through Dairy Herd Improvement test plans.
Journal of dairy science - 1 Jul 2012
Norman H D, Miller R H, Wright J R, Hutchison J L, Olson K M
Abstract excerpt
Frequency of abortions recorded through Dairy Herd Improvement (DHI) testing was summarized for cows with lactations completed from 2001 through 2009. For 8.5 million DHI lactations of cows that had recorded breeding dates and were >151 d pregnant at lactation termination, the frequency of recorded abortions was 1.31%. Effects of year, herd-year, month, and pregnancy stage at lactation termination; parity; breed;...
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