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The effects of raising system on the lipid metabolism and meat quality traits of slow-growing chickens

文献类型： 外文期刊

作者： Yang, Ye 1 ; Wen, Jie 2 ; Fang, Gui You 3 ; Li, Zong Rong 3 ; Dong, Zhi Yan 3 ; Liu, Jing 3 ;

作者机构： 1.Yangtze Univ, Coll Anim Sci, Jinzhou, Hubei, Peoples R China

2.Chinese Acad Agr Sci, Inst Anim Sci, Beijing 100193, Peoples R China

3.Fujian Acad Agr Sci, Inst Anim Sci & Vet Med, Fuzhou, Fujian, Peoples R China

关键词： slow-growing chickens;raising system;lipid metabolism;meat quality;free-range

期刊名称：JOURNAL OF APPLIED ANIMAL RESEARCH （ 影响因子：1.63； 五年影响因子：1.727 ）

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收录情况： SCI

摘要： We investigated the effects of different raising systems on growth performance, lipid deposition and meat quality traits of chickens. The chickens were raised for 28 days and then randomly assigned into three raising systems with similar body weight (BW) as follows: indoor caged, indoor floor pens and free-range system. They were sacrificed and analysed after 112 days. The raising system had no significant effect on BW and daily weight gain (P > 0.05), but had a significant effect on male thigh intramuscular fat (IMF) and female abdominal fat content (PAF) content (P < 0.05). The expression of hepatic fatty acid synthase (FAS) mRNA level in free-range raising system was significantly lower than that of caged indoor raising systems (P < 0.05). The meat quality (Delta pH, drip loss, shear force and fibre traits) was largely affected by the raising system (P < 0.05). In conclusion, the data indicated that the free-range raising system could significantly reduce thigh IMF content and hepatic FAS expression, consequently affecting the meat quality.

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