Growth Performance,Carcass Performance and Meat Quality of Different Position Pork of Specialized Lines ZFD Pigs

The growth performance,carcass performance,meat traits and the content of amino acid,fatty acid of Longissimus muscle,loin and hams of specialized lines ZFD pigs were studied.The results showed that the growth performance and FCR of ZFD were high.ADG and F/G at the weight 30～100 kg were 787.12 g and 2.74∶1.The slaughter weight was 102.68 kg,the lean meat percentage was 66.56%,meat color score was 4.05,marbling score was 4.25,pH value was 6.58,IMF was 3.625%.The 100 g Longissimus muscle TAA,DAA,EAA and DAA/TAA were the highest,increased by 4.52%(P0.05)and16.66%(P0.01),5.65%(P0.05)and17.68%(P0.01),2.35%(P0.05)and13.65%(P0.01),1.09%(P0.05)and 0.86%(P0.05)as compared with loin and ham,respectively.EAA/TAA of ham was the highest,increased by 2.75%(P0.05)and 0.52%(P0.05)as compared with Longissimus muscle and loin,respectively.The differences of the contents of stearic acid and oleic acid of three position porks were not significant.The differences of palmitic acid contents of Longissimus muscle and ham were significant,and the differences of linoleic acid contents of Longissimus muscle and loin were significant.IMF of ham was the highest,increased by 18.62%(P0.05),160.61%(P0.05) as compared with Longissimus muscle and loin,respectively.The protein contents of Longissimus muscle were the highest,increased by 6.12%(P0.05),18.24%(P0.01) as compared with loin and hams,respectively.The dry matters content of Longissimus muscle was the highest,increased by 12.08%(P0.05) and 8.57%(P0.05) as compared with loin and ham,respectively.