Abstract:
In order to investigate growth performance, slaughter performance and meat quality improvement of Taihe black chicken “southern varieties breed in the northern”,pure bred chicks of Taihe black chicken were used as TT control group, the F1 hybrid of Taihe black chicken(♂) and Dehua black chicken(♀) were used as TD test group, and the F1 hybrid of Taihe black chicken(♂) and Recessive white chicken(♀) were used as TY test group. Experimental animals were fed for 14 weeks under the same conditions.Indexes of body measurements(body oblique length, keel length, chest circumference, shank circumference, chest angle, chest width, chest depth and shank length), slaughter performance indexes(carcass weight, half net weight, full net weight, wing weight, leg weight, chest muscle weight, half carcass rate, whole carcass rate, wing ratio, leg ratio and breast muscle ratio) and the contents of amino acids and fatty acids in pectoral meat in different groups were studied and compared. The results showed that the chickens in the TD test group retained the characters of “black foot, black skin”. The hens in the TY test group retained the characters of“black foot, black skin”.Compared with the roosters in the TT control group, the indexes of body measurements(the body weight, body oblique length, chest angle, chest depth, shank length, and shank circumference) and the slaughter performance indexes(carcass weight, half net weight, full net weight, wing weight, leg weight and pectoral muscle weight)of the cocks were significantly increased(P<0.05)in the TD and TY groups; the essential amino acid(histidine), saturated fatty acid(C14∶0, C16∶0) and unsaturated fatty acid(C16∶1, C18∶1 n9, C18∶3 n3, C20∶1 n9, C20∶2) in breast muscle in the TY experimental group were significantly increased(P<0.05). Compared with the hens in the TT control group, the indexes of body measurements(the body weight, body oblique length, chest depth, shank length, and shank circumference) and the slaughter performance indexes(carcass weight, half net weight, full net weight, wing weight, leg weight and pectoral muscle weight)of the hens were significantly increased(P<0.05) in the TD and TY groups; the essential amino acid(histidine) of breast muscle in the TD group was significantly increased(P<0.05); the contents of histidine, serine, methionine, glutamic acid, saturated fatty acid(C14∶0) and unsaturated fatty acid(C16∶1, C20∶2, and C20∶3 n6) of breast muscle were significantly increased(P<0.05) in the TY experimental group.The results indicated that the germplasm characters of Taihe black chicken “southern varieties breed in the northern” were preserved to varying extent by both the hybrid between Taihe black chickens(♂) and Dehua black chickens(♀) and the hybrid between Taihe black chickens(♂) and Recessive white chickens(♀),and the production performance was improved and meat quality was improved.