Genetic Prediction of Efficiency in the Future:
An Australian Perspective 

The cost of feed is an important variable affecting the profitability of beef production. And while feed intake and measures of feed efficiency are heritable, no selection based on feed intake data has occurred in the beef industry. However, Australian research has led to development of an estimated breeding value (EBV) to aid selection for net feed intake (NFI). Results suggest that selection for reduced NFI may enhance efficiency achieved by animals being genetically able to eat less, without reducing growth.

According to David Johnston of the University of New England, New South Wales, additional studies are underway to further knowledge of feed intake, and particularly for the purpose of reducing the cost of obtaining genetic predictions and implementation into selection programs.

“Science is rapidly advancing our understanding of the genetics of feed intake and efficiency, but the challenge is to gain widespread adoption by industry such that selection decisions on young bulls in seedstock herds can use knowledge of genetic differences in NFI,” Johnston said.

The incentive exists for innovative Austrailian seedstock breeders to test their young bulls through two testing options. Breeders may purchase their own facility for on-farm testing, or use mobile testing units. Secondly, several commercial central test facilities exist to measure individual feed intake.
— by Troy Smith