Application and impact of new genetic technologies on beef cattle breeding: a ‘real world’ perspective
E. J. PollakDepartment of Animal Science, Cornell University, Ithaca, NY, 14853 USA. Email: ejp6@cornell.edu
Australian Journal of Experimental Agriculture 45(8) 739-748 https://doi.org/10.1071/EA05047
Submitted: 14 February 2005 Accepted: 5 May 2005 Published: 26 August 2005
Abstract
Molecular genetics is a maturing discipline with innovations that are finding application in animal breeding. Currently, DNA tests are available for parent identification or verification, and markers tests also exist for quantitative trait loci affecting important traits in beef cattle. The beef industry is, however, a particularly challenging industry in which to design breeding programs that fully capitalise on the potential of this technology. Hence, adoption within this industry to date has been below expectation. This paper examines several applications that are being investigated and will include discussion on issues constraining the transfer of DNA technology. An example of using DNA parentage testing for expanding the reach of selection programs into the commercial sector of the beef industry is explored in some depth, as it represents a potential high impact application. Use of molecular information in selection programs and in genetic evaluations is also discussed.
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