Study on Slaughter Performance and Meat Quality of Guangxi Partridge Chickens

In order to develop product and improve breeding for Guangxi partridge chickens,the slaughter performance,amino acids,inosine acid and fatty acids contents in muscle were measured and evaluated for Guangxi partridge chickens at 120 days old,which were raised at same nutrition level and management. Carcass traits and meat characteristics were evaluated. The results were showed that the dressing percentage and eviscerated yield percentage of cocks and hens were 90.15%,92.57% and 69.12%, 68.08%,respectively. The total amino acids in the breast and leg muscles of cocks and hens were 20.37,18.40 and 21.30, 18.44 g/100 g,respectively. The ratio of essential amino acids to total amino acids in breast and leg muscles of cocks and hens were 39.32%,42.33% and 42.72%, 43.06%,respectively,and essential amino acid index (EAAI) were 84.33,88.82 and 90.44, 90.77,respectively. The content of delicious,sweet,branched chain amino acids and inosinic acid in breast muscle were 0.85 g/100 g,0.42 g/100 g,0.56 g/100 g and 1.55 mg/g higher than that in leg muscle,respectively,and the content of sweet amino acids in hens was 0.40 g/100 g more than that in cocks. The first limiting amino acid was Met+Cys in muscle of Guangxi partridge chickens. Oleic acid and linoleic acid were mainly components of unsaturated fatty acids in muscle,palmitic acid and stearic acid were mainly components of saturated fatty acids in muscle. The relative content of polyunsaturated fatty acids and essential fatty acids in leg muscle were higher than that in breast muscle, and their contents in hens were more than that in cocks. All these showed that the Guangxi partridge chickens had good meat production,flavor and high nutrition value,meanwhile the nutritional values in hens were superior than that in cocks.