Correlativity of Carcass and Meat Quality Performance and Its Change with Body Weight of Luyan White Pigs

Carcass performance and meat quality of 27 Luyan white pigs of 85~107 kg body weigh stage were studied.And the changes of carcass and meat quality as body weight changed were analyzed.The objectives were to investigate appropriate slaughter weight of Luyan white pigs.Results indicated that lean percent of the stage of 85~90 kg slaughter weight was the higher than that of others,it was 62.72%,increased by 1.62%(P0.05),0.34%(P0.05)and 2.40%(P0.05)as compared with the other three groups,respectively.When the slaughter weight was 91~95 kg,the meat quality was fine,pH was 6.11,meat color and marbling score were 3.26 and 3.11,intramuscular fat content of muscles was 2.38%,water loss was 13.89%.The correlation degree of carcass traits and meat traits are strong or weak,correlation coefficients had positive and negative.The same traits had stronger positive correlation,the adverse traits had stronger negative correlation.In the 85~107 kg stage,assumed the remarkable return relations besides between the yield of carcass and the body weight,other each target and the body weight linear correlation was not obvious.Comprehensive evaluation showed that the reasonable slaughter weight stage of Luyan white pigs was 91～95 kg.