Evaluation of the Dairy Herd Improvement Association Record System
Open Access
- 1 January 1968
- journal article
- research article
- Published by American Dairy Science Association in Journal of Dairy Science
- Vol. 51 (1), 153-162
- https://doi.org/10.3168/jds.s0022-0302(68)86940-1
Abstract
The daily variation in milk production was estimated to be in the range of 4-5 lbs. squared or a standard deviation of 2.00 lbs. This may be sufficiently large enough to warrant re-evaluation of the present standars for accuracy in measuring devices. It was found that the present method of calculating records consistently overestimates actual production. Correction factors were developed to remove this bias.This publication has 6 references indexed in Scilit:
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- Errors in Estimation of Lactational Yields of Milk, Fat, and Solids-Not-Fat from Individual CowsJournal of Dairy Science, 1960
- Lactation Studies. IV. Accuracy of Different Methods of Estimating Lactation YieldsJournal of Dairy Science, 1952
- Lactation Studies. III. Variations in Daily Yields of Dairy CowsJournal of Dairy Science, 1952
- A Comparison of Bimonthly and Quarterly Testing with Monthly Testing for Estimating Dairy Cattle ProductionJournal of Dairy Science, 1952
- Comparison of Methods of Estimating Milk and Fat Production in Dairy CowsJournal of Dairy Science, 1949