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Breeding programs in dairy cattle - current and future considerations

Published online by Cambridge University Press:  27 February 2018

A. E. Freeman
A. E. Freeman*
Affiliation:
Iowa State University, Ames, Iowa. U.S.A.
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Extract

Methods of evaluating dairy cattle using mixed models with Best Linear Unbiased Prediction properties have progressed from the sire model to the animal model. Definitions of effects in models need refinement, particularly for contemporary groups. Pedigree selection and progeny testing is the standard for producing sires used in artificial insemination, but multiple ovulation and embryo transfer schemes are being tried. Efficient production is necessary under conditions of surplus. Efficiency can be achieved by higher production per cow and reducing costs by improved reproduction, increased herd life, reduced health costs, and reduced dystocia. Preferential treatment is a major problem. New biotechnological developments such as bovine somatotropin, mitochondrial genetics, sexing semen, embryo transfers, cloning, transgenic animals, and markers are considered as potential new technologies that may be useful for dairy cattle improvement.

Type
Breeding Technology
Information
BSAP Occasional Publication , Volume 12: Animal Breeding Opportunities , 1988 , pp. 129 - 152
Copyright
Copyright © British Society of Animal Production 1988

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