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A note on the estimation of total lactation yield from production on a single day

Published online by Cambridge University Press:  02 September 2010

P. D. P. Wood
P. D. P. Wood
Affiliation:
Milk Marketing Board, Thames Ditton, Surrey
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Summary

The recording of total lactation yield for individual cows can be timeconsuming and costly. Periodic sampling at intervals throughout lactation offers an acceptable alternative, and a single day's production can be made to furnish a useful guide, by using an equation relating total to daily production.

Errors of estimation are affected by the degree of consistency of daily production, parity and individual herd management, so that estimates could be biased and have a standard error of nearly 20% if these effects are disregarded. Coefficients in the prediction equation must therefore be developed for individual herds.

Type
Research Article
Information
Animal Production , Volume 19 , Issue 3 , December 1974 , pp. 393 - 396
Copyright
Copyright © British Society of Animal Science 1974

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References

REFERENCES

O'Connor, L. K. and Lipton, S. 1960. The effect of various sampling intervals on the estimation of lactation milk yield and composition. J. Dairy Res. 27: 389–398.CrossRefGoogle Scholar
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Wood, P. D. P. 1970. A note on the repeatability of parameters of the lactation curve in cattle. Anim. Prod. 12: 535–538.Google Scholar