DOI: 10.36347/sjavs.2018.v05i07.004

Pages: 394-404

Abstract: Beef quality，except the milk production, is the most important index that both the consumers consider and the experts on genetic breeding care. The screening and identification of function gene meat quality-related and controlling the allometric traits have important significance for marker assisted selection. This paper explored variation of 10 genes in 7 different populations of beef cattle. The association analysis of 10 genes and different genotype combinations with totally 28 allometric traits was carried out by linear model using the SPSS software. Next, that we studied association analysis between different genotypes and the traits. PN3 gene had a significant effect on 12 important economic traits together with the LWBS. Finally, the optimal prediction model of the trait LWBS with 16 traits was obtained by principal component regression. The analysis results can provide scientific basis for improving the beef fat ratio and beef quality, and for the cultivation of new meat products.