Effects of different raising systems on growth performance, carcass, and meat quality of medium-growing chickens
文献类型: 外文期刊
作者: Li, Ying 1 ; Luo, Chenglong 1 ; Wang, Jie 1 ; Guo, Fuyou 1 ;
作者机构: 1.Guangdong Acad Agr Sci, Inst Anim Sci, 1 Dafeng 1st St, Guangzhou 510640, Guangdong, Peoples R China
2.State Key Lab Livestock & Poultry Breeding, Guangzhou, Guangdong, Peoples R China
关键词: Raising system;growth performance;carcass traits;meat quality
期刊名称:JOURNAL OF APPLIED ANIMAL RESEARCH ( 影响因子:1.63; 五年影响因子:1.727 )
ISSN: 0971-2119
年卷期: 2017 年 45 卷 1 期
页码:
收录情况: SCI
摘要: A growing awareness of human health, nutrition, and animal welfare concerns has led to the development of specialty markets for organic food. Poultry produced in alternative systems, such as free-range or organic, are part of this trend. The aim of the present study was to evaluate the differences in growth performance, carcass traits, and meat quality of medium-growing chickens raised in three different raising systems: indoor-floor, cage, and free-range. One hundred and twenty female Lingnanhuang medium-growing birds were reared in each system. All birds were offered the same diets and were grown for 90 days. The body weight gain and feed conversion ratios (feed/gain) of birds from the cage and indoor-floor systems were superior to those kept in the free-range system. The raising system significantly affected eviscerated carcass, abdominal fat, breast muscle, and leg muscle yields as well as shear force value of muscle (P < .05). There was no difference in pH, water-holding capacity, intramuscular fat, and inosine monophosphate content among the systems (P > .05). In conclusion, in medium-growing chickens, the free-range raising system had significant negative effects on growth performance and abdominal fat content.
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