Abstract
Genomic tools and accuracy of molecular breeding values (MBVs) for economically important traits continue to improve and are being applied in commercial crossbred beef cattle. Genomic breed composition and retained heterozygosity of an individual animal can be used to further improve female fertility, stayability, lifetime productivity and calf health resilience. But this is just the first step. Within specific crossbred populations, researchers at Livestock Gentec have used large numbers of cattle phenotypes and genotypes, combined with advanced statistical genomic analyses to generate MBVs for 18 traits with moderate to moderately-high accuracy (0.35 to 0.60). This accuracy is equivalent to 10 to 20 progeny records. These MBVs are economically balanced into multi-trait profit indices such as the Replacement Heifer Profit Index Score and the Feeder Profit Index. The use of these genomic tools will improve the sustainability of beef production by improving profitability, lowering the carbon footprint, and improving an animal’s ability to adapt to changing environments. The following paper outlines the validation of these genomic tools and their potential benefits.
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