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Kansas Agricultural Experiment Station Research Reports
1989; Kansas Agricultural Experiment Station contribution; no. 90-140-S; Report of progress (Kansas Agricultural Experiment Station); 580; Dairy; DHI Records; Reproduction; Nutrition; Milk quality; Genetics
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Evaluating Dhi Records With The Dairy Herd Analyzer (1989), James R. Dunham
Evaluating Dhi Records With The Dairy Herd Analyzer (1989), James R. Dunham
Kansas Agricultural Experiment Station Research Reports
A computer program was developed for analyzing DHI records to evaluate potential losses from 1) reproduction, 2) nutrition, 3) milk quality, and 4) genetics. Production-tested Kansas Holstein herds were grouped according to Rolling Herd Average (RHA), with the groups averaging 13,587, 15,988, 17,938 and 20,227 lb milk/cow/yr. Losses were directly related to RHA, amounting to $573, $426, $300, and $160/cow/yr, respectively. The Dairy Herd Improvement (DHI) program provides valuable information to dairy farmers for making feeding, breeding, and management decisions. Yet, the only economic information provided by the program is feed cost/cwt milk produced and income over feed cost. Hence, …