The Analysis of Relationship between MSTN/Smad Signal Path and Turpan Black Sheep Meat Production

The research analyzed the expression and difference of MSTN/Smad signal path genes(MSTN, Smad2, Smad3,Smad4, TGFBR1, TGFBR2) in Turpan black sheep muscle tissue, as well as the correlation with some growth indices. Besides,the research used the fluorescence quantitative PCR technique to detect the expression level of MSTN, Smad2, Smad3, Smad4,TGFBR1 and TGFBR2 genes in m RNA of Turpan black sheep muscle. The research also used conventional and histological methods to determine the muscle growth and meat producibility indices, discussed the relationship between MSTN/Smad signal path and muscle growth and meat production. The result shows that these genes are expressed in Turpan black sheep muscle tissues, and have some relationship with body weight, height, length, chest circumference, hoof circumference, carcass and dressing percentage. The MSTN gene is negatively correlated with body weight(r = 0.993, P < 0.05), and hoof circumference(r= 0.957, p < 0.01), but has no significant correlation with body height, length, carcass weight, dressing percentages(P > 0.05);Smad2 gene shows significantly negative correlation the with dressing percentage(r = 0.918, p < 0.05), but no significant correlation with body weight, height, length, chest circumference, hoof circumference and carcass(P > 0.05); Smad3 gene shows no significant correlation with any of them(P > 0.05); Smad4, TGFBR1, TGFBR2 did not show any significant relationship with body height, length, chest circumference, weight and dressing percentage(P > 0.05).