Meat Performance And Correction Analysis With Meat Quality Traits In Different Varieties Of Cattle

In recent years, the animal husbandry has been developing rapidly and growthingtrend of sustained in our country. Among them, the industry of beef cattle also had agreat development. It is the aim of animal husbandry workers that improve the qualityof beef carcass, growth speed and produce high-grade beef. In the north of ourcountry, it is the focus of the majority animal husbandry workers to choose whichkind of beef cattle breeds that can achieve the best economic benefit.The object of the study include six beef cattle, such as German Simmental cattle，Piedmontese，Angus，Australian Simmental cattle，linousin and Gelbvien. Wedetermined six beef cattle meat traits data through centralized feeding fattening andslaughtering, collect fattening period weight data and record related to slaughter.According to the results of statistical analysis in the study of six beef cattle breeds, theweight of the total increase in German Simmental cattle is the most, the average dailygain the highest, and the weight of the total increase in linousin is the least, the lowestaverage daily gain. By PCR–RFLP, we obtained meat quality traits of geneticcorrelation of German Simmental cattle. The results of this experiment not onlyprovide a scientific basis for the select of beef cattle breed and the development ofbeef cattle industry in northern area, but also provide experimental basis for the futureof selective breeding of German Simmental cattle.Aanalysis of six varieties of beef cattle slaughter related data, the results showthat between German Simmental cattle and Angus had a significant difference inbefore slaughter weight, bone weight, hoofs weight and head weight ratio (P<0.05).Between German Simmental cattle and linousin had a significant differences in thebone weight, head weight ratio (P<0.05). At the same time German Simmental cattlewith the other five varieties of beef cattle stomach weight were significant differences (P<0.05). There were significant differences (P<0.05) in tail weight between linousinand German Simmental cattle, Piedmontese, Australian Simmental. There weresignificant differences (P<0.05) in the meat-bone ratio of Gelbvien and Piedmontese.At the same time Gelbvien and the other five varieties of beef cattle tare rate weresignificantly different (P<0.05). Piedmont and the other five varieties of beef cattlewere significantly correlated in carcass rate, net meat rate (P<0.05). While there wasno significant difference in the other cattle slaughter data between the beef cattlebreed.Six varieties of beef carcass was split and the meat loaf data correlation wasanalyzed by SPSS, the results show that there were significant differences (P<0.05) inthe thick flank and the other six meat loafs weight between German Simmental cattleand Angus. There were significant differences (P<0.05) between German Simmental andlinousin in two meat loafs weight. Between Piedmontese and Angus there were five meatloafs weight were significant different (P<0.05). While there was no significant differencein the other meat loaf weight between the beef cattle breed.To study the correlation between the Polymorphism of PRDX6gene, AGPAT5gene and the meat quality traits in German Simmental cattle, the PCR-RFLP methodwas used to detect the polymorphism. The results showed that there were no genepolymorphisms in the PRDX6gene in German Simmental cattle, and the AGPAT5gene was a single point mutation (G→C) intron3, the genotype of AA was thedominant genotype. The genetic polymorphisms significantly correlated with GermanSimmental cattle, For Slaughter weight, before slaughter weight, carcass weight andmeat weight (P<0.05). While there were no significant differences in the other traits(P>0.05).