title: Effects of different rearing and feeding methods on meat quality and antioxidative properties in Chinese Yellow male broilers.
abstract: 1. This study examined responses of male broilers during a 42-d production cycle to two different rearing and feeding methods. 2. A total of 400 Chinese Yellow male broilers were allotted randomly at 21 d into two groups; the control was a typical indoor commercial rearing method and the treatment had outdoor access with scattered feeding (OS). Each group had 5 replicates with 40 birds per replicate. 3. Growth performance was similar for both groups from 21 to 63 d of age. OS birds had significantly lower abdominal fat percentage, meat shear force, drip loss, breast meat colour b* value and significantly higher pH value compared with the controls. OS birds had significantly lower muscle fibre diameter and greater muscle fibre density. Serum glutathione peroxidase and catalase activities were significantly higher and the contents of cholesterol, lactic acid, glycogen and malondialdehyde of breast muscle were significantly lower in OS birds than controls. 4. The results suggest that the OS feeding method had no negative effects on performance (weight, gain, feed conversion rate, carcase traits) compared with controls, and appeared to be beneficial for meat quality indices and oxidative stability.
authors: The Key Laboratory of Animal Nutrition and Feed (South China) of Ministry of Agriculture, Guangdong Public Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, P.R. China.
authors: S
authors: S
authors: Jiang
authors: Z
authors: Z
authors: Jiang
authors: Y
authors: Y
authors: Lin
authors: G
authors: G
authors: Zhou
authors: F
authors: F
authors: Chen
authors: C
authors: C
authors: Zheng
mesh_terms: D050153:Abdominal Fat / Q000737:chemistry; D000821:Animal Feed / Q000032:analysis*; D000822:Animal Husbandry / Q000379:methods*; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D000975:Antioxidants / Q000032:analysis* / Q000378:metabolism; D002374:Catalase / Q000097:blood; D002645:Chickens / Q000254:growth & development* / Q000502:physiology; D002784:Cholesterol / Q000032:analysis; D004032:Diet / Q000662:veterinary*; D019587:Dietary Supplements / Q000032:analysis; D005979:Glutathione Peroxidase / Q000097:blood; D006003:Glycogen / Q000032:analysis; D019344:Lactic Acid / Q000032:analysis; D008297:Male; D008315:Malondialdehyde / Q000032:analysis / Q000097:blood; D008460:Meat / Q000592:standards*; D011897:Random Allocation; D013482:Superoxide Dismutase / Q000097:blood; D015430:Weight Gain
chemical_list: D000975:Antioxidants; D019344:Lactic Acid; D008315:Malondialdehyde; D006003:Glycogen; D002784:Cholesterol; D002374:Catalase; D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase