| Abstrakt: |
Guizhou white goat is an excellent local goat breed in China, however, it has the disadvantages of smaller individuals, slower growth rate and low feed conversion rate, so, we introduced Boer goat as the male parent and crossed with Guizhou white goat to obtain F3 generation of Boer × White goat hybrid to improve its production performance. To study the effect of PGAM2 gene polymorphisms on the performance of F3 generation hybrid goats, the relationship between PGAM2 gene polymorphisms and slaughter traits, meat quality traits and organ coefficients was determined in 39 F3 generation hybrid goats. The results showed that the slaughtering performance of male goats was better than that of female goats, and there were highly significant (P<0.01) and significant (P<0.05) differences in live weight and carcass weight, respectively. In meat quality, the marbling score of female goats was significantly higher than that of male goats (P<0.01), and the shear force of female goats was significantly lower than that of male goats (P<0.01). Regarding organ coefficients, the large intestine and stomach of male goats was significantly higher than that of female goats (P<0.01), whereas the liver of female goats was significantly higher than that of male goats (P<0.01). Polymorphism analysis of the PGAM2 gene showed that there were polymorphic loci in the 3'UTR (2435A→G), and there were significant (P<0.01) or highly significant (P<0.05) differences in some traits between the GG and AG or AA genotypes. Conclusion: The production performance of male goats is better than that of female goats in F3 generation hybrid goats, and the slaughtering performance of F3 generation hybrid goats was significantly improved compared with that before breeding. The correlation study showed that the slaughter performance of the GG population with the PGAM2 gene was significantly better than that of GA and AA, which could be used as a potential molecular breeding marker for research. [ABSTRACT FROM AUTHOR] |
