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A note on a partial adjustment model to describe lactation curves

Published online by Cambridge University Press:  02 September 2010

Janneke A. Hoekstra
Janneke A. Hoekstra
Affiliation:
TNO-Institute of Mathematics, Information Processing and Statistics, PO Box 100, 6700 AC Wageningen, The Netherlands
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Abstract

Dhanoa and Le Du (Animal Production 1982, 34: 243–247) proposed a model in which the milk yield in a particular week is described by a weighted average of a straight-line target yield and the yield in the preceding week. It is demonstrated that the weight parameter × in this model is partially determined by the time from calving to peak yield and hence does not represent correlation between successive yields satisfactorily.

Type
Research Article
Information
Animal Production , Volume 42 , Issue 3 , June 1986 , pp. 431 - 432
Copyright
Copyright © British Society of Animal Science 1986

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References

REFERENCES

Cobby, J. M. and Le Du, Y. L. P. 1978. On fitting curves to lactation data. Anim. Prod. 26: 127–133.Google Scholar
Dhanoa, M. S. and Le Du, Y. L. P. 1982. A partial adjustment model to describe the lactation curve of a dairy cow. Anim. Prod. 34: 243–247.Google Scholar
France, J. and Thornley, J. H. M. 1984. Mathematical Models in Agriculture, p. 225. Butterworth, London.Google Scholar
Glasbey, C. A. 1984. Regression parameter estimation with serially correlated errors. Ph.D. Thesis, Univ. Edinburgh.Google Scholar
Goodall, E. A. and Sprevak, D. 1984. A note on a stochastic model to describe the milk yield of a dairy cow. Anim. Prod. 38: 133–136.Google Scholar
Goodall, E. A. and Sprevak, D. 1985. A Bayesian estimation of the lactation curve of a dairy cow. Anim. Prod. 40: 189–193.Google Scholar