Genomic Prediction in Japanese Black beef cattle: some Topics

概要

The Japanese Black is a representative of the beef cattle breeds constructing Wagyu in Japan. The beef produced are high quality, especially highly marbled (shimofuri), and they are also famous overseas. Carcass traits including the degree of marbling have been remarkably improved through use of a low number of elite sires with high predicted genetic abilities (breeding values) for meat quality. Breeding values are predicted by using a deep pedigree information and a large amount of carcass performance data of fattened progenies. Breeding values for growth performance and feed effi ciency of young bulls and those for female reproductivity of cows have been also evaluated using pedigree information. Recently, prediction of breeding values by using genotype information on genome-wide high-density single nucleotide polymorphisms (SNPs) as DNA markers, also called genomic prediction, have been studied in Japanese Black cattle. Genomic prediction is believed to have a potential to achieve more effi cient breeding in livestock species. In this presentation, some relevant topics for genomic prediction in Japanese Black cattle, as well as the possibility of genomic prediction and the future issues in this breed, will be discussed.

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