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A note on live-weight adjustment for pregnancy in cows

Published online by Cambridge University Press:  02 September 2010

M. W. Silvey  and
K. P. Haydock
M. W. Silvey
Affiliation:
Division of Tropical Crops and Pastures and Division of Mathematics and Statistics, CSIRO, Cunningham Laboratory, St Lucia, Brisbane, Australia 4067
K. P. Haydock
Affiliation:
Division of Tropical Crops and Pastures and Division of Mathematics and Statistics, CSIRO, Cunningham Laboratory, St Lucia, Brisbane, Australia 4067
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Abstract

Since comparison of live-weight change of breeding cows is complicated by pregnancy and reproductive synchrony, possible analytical methods for overcoming these problems were reviewed. It was concluded that correction of cow live-weight by subtracting the weight of the gravid uterus and products of conception was biologically and practically meaningful. Two exponential models using polynomial coefficients were derived from published data to predict the fresh weights, at any time during gestation, of the foetus (calculated from calf birth weight) and the gravid uterus and foetal membranes and fluids.

Type
Research Article
Information
Animal Production , Volume 27 , Issue 1 , August 1978 , pp. 113 - 116
Copyright
Copyright © British Society of Animal Science 1978

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References

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