Effects of Crossbreeding on Slaughter Traits and Breast Muscle Chemical Composition in Chinese Chickens

文献类型： 外文期刊

第一作者： Huang, Ai-xia

作者： Huang, Ai-xia;Wu, Tian-xing;Wu, Tian-xing;Lu, Li-zhi;Yang, Fu-sheng;Ding, Wei-ping

作者机构：

关键词： Amino acid;chicken;crossbreeding;fatty acid;inosine-5 '-monophosphate;Intramuscular fat;slaughter traits

期刊名称：BRAZILIAN JOURNAL OF POULTRY SCIENCE （ 影响因子：0.826； 五年影响因子：1.178 ）

ISSN： 1516-635X

年卷期： 2011 年 13 卷 4 期

页码：

收录情况： SCI

摘要： We investigated the effects of crossbreeding on slaughter traits and the chemical composition of chicken breast muscle. Trials were conducted using 120 broilers from four lines: Xiao-Shan chicken (XS), Xian-Ju chicken (Xi), Xiao-Shan chicken male x Xian-Ju chicken female (Zhenan 1, ZNY1) and Xiao-Shan chickens male (Guang-Xi Yellow chicken male xXian-Ju chicken female) female (Zhenan 2, ZNY2). The birds were slaughtered at 120 days of age and the slaughter traits were measured. Breast muscles were sampled to determine chemical composition. The slaughter traits of hybrid chickens were improved. Both hybrid strains had higher intramuscular fat (IMF) and inosine-5'-monophosphate (inosinic acid, IMP). Concentrations of monounsaturated fatty acids (MUFA) in breast muscles from the two hybrids were significantly higher than in the other two breeds (p < 0.05). The concentration of polyunsaturated fatty acids (PUFA) in the breast muscles of the two hybrids was significantly lower than in the other two breeds (p < 0.05). ZNY2 had significantly lower (p < 0.05) concentrations of myristic acid (C14:0). The breast muscle of ZNY1 had significantly higher palmitic acid (C16:0) concentrations than XS, Xi, or ZNY2 (p < 0.05). The concentrations of oleic acid (C18:1) and eicosapentaenoic acid (C20:5n-3, EPA) in breast muscle from the two hybrid lines were significantly higher than the other two breeds (p < 0.05). Breast muscles from XS and Xi chickens contained significantly higher docosahexenoic acid (C22:6n-3, DHA) than the two hybrid lines (p < 0.05). The XS and Xi chickens had lower n-6/n-3 ratios than the two hybrids (p < 0.05). Breast muscles from ZNY1 and ZNY2 contained higher concentrations of essential amino acids (p < 0.05), total amino acids (p < 0.05), and some individual amino acids (p < 0.05). In conclusion, crossbreeding improved the slaughter traits of chickens and increased intramuscular fat and inosinic acid content in breast muscle. The fatty acid and amino acid compositions of breast muscles were also improved by crossbreeding.

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