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The effect of different genetic lifts and gains on milk production on the long term benefits of using new breeding technologies in commercial dairy herds.

Published online by Cambridge University Press:  21 November 2017

C. M. Yates ,
A. T. Chamberlain ,
T. Rehman ,
H. Neal  and
B. J. Frost
C. M. Yates
Affiliation:
University of Reading, Department of Agriculture, Earley Gate, P. O. Box 236, RG6 2AT
A. T. Chamberlain
Affiliation:
University of Reading, Department of Agriculture, Earley Gate, P. O. Box 236, RG6 2AT
T. Rehman
Affiliation:
University of Reading, Department of Agriculture, Earley Gate, P. O. Box 236, RG6 2AT
H. Neal
Affiliation:
University of Reading, Department of Agriculture, Earley Gate, P. O. Box 236, RG6 2AT
B. J. Frost
Affiliation:
University of Reading, Department of Agriculture, Earley Gate, P. O. Box 236, RG6 2AT
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Extract

There are now a range of new breeding technologies which are actually or potentially available for use in commercial dairy cows. In order to give a socioeconomic evaluation of these new technologies the effects of the achievable genetic lift and gain must be estimated and their effect upon milk production. This paper has evaluated these effects from both artificial insemination and embryo transfer based technologies.

A simulation model was constructed to estimate the consequences of adopting either A.I. or embryo based technologies on milk production. The model simulated a 100 cow herd over a period of fifteen years, to allow the delayed benefits of using such technologies to reach maturity. The initial herd structure was calculated using a range of estimates of technology success rates (probability of successfully conceiving after one service) and culling rate (14%).

Type
Cattle
Information
Proceedings of the British Society of Animal Production (1972) , Volume 1994 , March 1994 , pp. 146
Copyright
Copyright © The British Society of Animal Production 1994

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References

Morant, S. V. and Gnanasakthy, A., 1989. A new approachto the mathematical formulation of lactation curves. Animal production 49:151–162 Google Scholar