title: Effects of dietary supplementation with creatine monohydrate during the finishing period on growth performance, carcass traits, meat quality and muscle glycolytic potential of broilers subjected to transport stress.
abstract: A total of 320 male Arbor Acres broiler chickens (28 days old) were randomly allotted to one of the three experimental diets supplemented with 0 (160 birds), 600 (80 birds) or 1200 mg/kg (80 birds) creatine monohydrate (CMH) for 14 days. On the morning of 42 day, after an 8-h fast, the birds of CMH-free group were divided into two equal groups, and all birds of these four groups were transported according to the follow protocol: 0.75-h transport without CMH supplementation (as a lower stress control group), 3-h transport without CMH supplementation, 3-h transport with 600 or 1200 mg/kg CMH supplementation. Each treatment group was composed of 8 replicates with 10 birds each. The results showed that supplementation of CMH for 14 days before slaughter did not affect the overall growth performance and carcass traits of stressed broilers (P>0.05). A 3-h transport decreased plasma glucose concentration, elevated plasma corticosterone concentration, increased bird live weight loss, breakdown of muscle glycogen, as well as the accumulation of muscle lactate (P<0.05), which induced some detrimental changes to breast meat quality (lower ultimate pH and higher drip loss, P<0.05). Nevertheless, supplementation of 1200 mg/kg CMH reduced chicken weight loss, decreased the contents of lactate and glycolytic potential in pectoralis major of 3-h transported broilers (P<0.05), which is beneficial to maintain breast meat quality by reducing the drip loss (P<0.05). These findings suggest that the reduction of muscle glycolysis is probably the reason for maintainance of meat quality by supplementation of CMH in transported broilers.
authors: 1College of Animal Science and Technology,Key Laboratory of Animal Origin Food Production and Safety Guarantee,Synergetic Innovation Center of Food Safety and Nutrition,Nanjing Agricultural University,Jiangsu Province,Nanjing 210095,China.
authors: L
authors: L
authors: Zhang
authors: 1College of Animal Science and Technology,Key Laboratory of Animal Origin Food Production and Safety Guarantee,Synergetic Innovation Center of Food Safety and Nutrition,Nanjing Agricultural University,Jiangsu Province,Nanjing 210095,China.
authors: J L
authors: JL
authors: Li
authors: 1College of Animal Science and Technology,Key Laboratory of Animal Origin Food Production and Safety Guarantee,Synergetic Innovation Center of Food Safety and Nutrition,Nanjing Agricultural University,Jiangsu Province,Nanjing 210095,China.
authors: T
authors: T
authors: Gao
authors: 1College of Animal Science and Technology,Key Laboratory of Animal Origin Food Production and Safety Guarantee,Synergetic Innovation Center of Food Safety and Nutrition,Nanjing Agricultural University,Jiangsu Province,Nanjing 210095,China.
authors: M
authors: M
authors: Lin
authors: 2College of Science,Nanjing Agricultural University,Nanjing 210095,China.
authors: X F
authors: XF
authors: Wang
authors: 2College of Science,Nanjing Agricultural University,Nanjing 210095,China.
authors: X D
authors: XD
authors: Zhu
authors: 1College of Animal Science and Technology,Key Laboratory of Animal Origin Food Production and Safety Guarantee,Synergetic Innovation Center of Food Safety and Nutrition,Nanjing Agricultural University,Jiangsu Province,Nanjing 210095,China.
authors: F
authors: F
authors: Gao
authors: 1College of Animal Science and Technology,Key Laboratory of Animal Origin Food Production and Safety Guarantee,Synergetic Innovation Center of Food Safety and Nutrition,Nanjing Agricultural University,Jiangsu Province,Nanjing 210095,China.
authors: G H
authors: GH
authors: Zhou
mesh_terms: D000821:Animal Feed / Q000032:analysis; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D002645:Chickens / Q000502:physiology; D003345:Corticosterone; D003401:Creatine / Q000737:chemistry / Q000494:pharmacology*; D004032:Diet / Q000662:veterinary; D019587:Dietary Supplements; D006019:Glycolysis / Q000502:physiology; D008297:Male; D008460:Meat / Q000032:analysis / Q000592:standards*; D018482:Muscle, Skeletal / Q000378:metabolism*; D013312:Stress, Physiological; D014186:Transportation
chemical_list: D003401:Creatine; D003345:Corticosterone