The last 40 years of dairy cattle breeding have been marked genetically by the impact of what may prove to have been the economically most efficient biotechnology- -artificial insemination. The last few years have been marked by biological developments that are absolutely amazing. The next few years are likely to be marked by even more amazing developments. The impact of these developments may require some time for implementation. The challenge to animal breeders is to design strategies for the integration of these developments with more conventional breeding strategies and to analyze the interactions between the new biotechnology, the animal, and its environment. The following paragraphs consist primarily of speculation on possible potential as well as challenges to dairy cattle breeders of various new and old biotechnologies. These will include growth hormone, artificial insemination, embryo transfer with multiple ovulation, embryo splitting and sexing of embryos, sexing of semen and in vitro fertilization, and nuclear cloning.

L. D van Vleck

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume XII. Biotechnology, selection experiments, parameter estimation, design of breeding systems, management of genetic resources., , 88–95, 1986
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