动物营养学报Issue(6)：1908-1914,7.DOI:10.3969/j.issn.1006-267x.2015.06.029
铬源和铬水平对1~3周龄热应激肉鸡生长性能、胴体性能及肉品质的影响
Effects of Chromium Sources and Levels on Growth Performance, Carcass Performance and Meat Quality of Broilers Aged from 1 to 3 Weeks under Heat Stress
摘要
Abstract
This experiment was conducted to investigate the effects of dietary different chromium ( Cr ) sources and levels on growth performance, carcass traits and meat quality of broilers aged from 1 to 3 weeks under heat stress. A total of 252 one-day-old female Cobb broilers were randomly allotted into 7 groups with 6 replicates per group and 6 broilers per replicate. Broilers in the control group were fed a basal corn-soybean meal diet contai-ning 0.37 mg/kg Cr, and the others in experimental groups were fed the basal diet supplemented with 0. 4 or 2.0 mg/kg Cr as either Cr propionate ( CrPro) , or Cr picolinate ( CrPic) , or Cr chloride ( CrCl3 ) , respectively. The experiment lasted for 21 days. The results showed as follows: 1) Cr source, Cr level and interactions be-tween Cr source and level had no effects on average daily feed intake and feed to intake ratio in broilers aged from 1 to 3 weeks under heat stress ( P>0.05) , however, the average daily gain in experimental groups was sig-nificantly increased compared with that in control group ( P<0.05) . 2) No differences were observed in the live body weight, dressing percentage, whole pure thorax percentage, breast muscles percentage and thigh muscle of broilers aged from 1 to 3 weeks under heat stress ( P>0.05) , however, the dressing percentage in experimental groups was significantly increased compared with that in control group ( P<0.05) . There were significant differ-ences among Cr sources in the of abdominal fat percentage ( P<0.05) , and CrPro group did the best, followed by the CrCl3 , with the CrPic coming in last. 3) The a∗value in experimental groups was significantly increased compared with that in control group ( P<0.05) . There were significant differences among Cr sources in the cook loss (P<0.05). Cr source, Cr level and interactions between Cr source and level had no effects on the shear force, pH, L∗and b∗value of the breast muscle ( P>0.05) . It is concluded that Cr supplementation can improve the growth performance, carcass performance and meat quality of broilers under heat stress, and it is better to supplement Cr from CrPro and CrCl3 than CrPic in the diet of broilers under heat stress.关键词
铬/热应激/肉仔鸡/胴体性能/肉品质Key words
chromium/heat stress/broiler/carcass performance/meat quality分类
农业科技引用本文复制引用
杨建,肖芳,郑灿财,石磊,黄艳玲..铬源和铬水平对1~3周龄热应激肉鸡生长性能、胴体性能及肉品质的影响[J].动物营养学报,2015,(6):1908-1914,7.基金项目
西南民族大学研究生“创新型科研项目”( CX2014SZ81) （ CX2014SZ81）
