Gene mapping knowledge vital for progress

25 January 2002




Gene mapping knowledge vital for progress

PRODUCERS need a clear understanding of how gene mapping works, so it can be used to improve breeding decisions currently based on systems such as EBVs and BLUP, scientists have been warned.

Aberdeen Angus breeder Marian Tilson, Wedderlie Farming, told delegates the progress of cattle breeds could be at risk if technology is used incorrectly. "I look forward to technological advances, but producers must have a system they understand and can use."

Refining genetic selection is paramount to successful breeding, she added. However, until scientists understand the effect of selecting genes in isolation on other performance traits, breeders need to take a broader view, she warned.

John Williams of the Edinburgh-based Roslin Institute said further understanding of how genes interact was essential. "More information sharing and collaboration between breeders, societies and researchers is needed to ensure progress is made swiftly."

As well as advancing breed selection, gene selection offered other benefits. According to Gert Nieuwhof, senior geneticist at MLC, the cost of breeding programmes could be cut by reducing the number of candidate animals for progeny testing through gene evaluation.

In the short term, better dairy bulls and lower breeding programme costs could be achieved. Gene marker information may be illustrated to breeders in a similar manner as EBVs, but with additional trait information. "Long term benefits are inestimable," he said. &#42


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