动物营养学报2016，Vol.28Issue(11)：3694-3700,7.DOI:10.3969/j.issn.1006-267x.2016.11.040
饲粮钴添加水平对断奶至3月龄獭兔生长性能、屠宰性能、肌肉品质和皮张质量的影响
Effects of Dietary Cobalt Supplemental Level on Growth Performance, Slaughter Performance, Muscle Quality and Fur Quality of Weaned to 3-Month-Old Rex Rabbits
摘要
Abstract
This experiment was conducted to study the effects of dietary cobalt supplemental level on growth performance, slaughter performance, muscle quality and fur quality of weaned to 3⁃month⁃old Rex rabbits. Two hundred weaned Rex rabbits were randomly assigned into 5 groups with 40 replicates in each group and each replicate contained 1 rabbit. Rabbits in 5 groups were fed experimental diets which supplemented with 0, 0.1, 0.4, 1.6 and 6.4 mg/kg cobalt ( in the form of cobalt sulfate) on the basis of a basal diet, respectively. The trial lasted for 7 days for adaptation and 60 days for test. The results showed that dietary cobalt supplemen⁃tal level had significant influences on final body weight ( FBW) ( P<0.05) and average daily feed intake ( AD⁃FI) ( P<0.01) , but had no significant influences on average daily gain ( ADG) and feed/gain ( F/G) ( P>0.05). With the increase of dietary cobalt supplemental level, the FBW and ADFI tended to be increased firstly and then decreased, and the highest values appeared when dietary cobalt supplemental level was 0. 4 mg/kg. Dietary cobalt supplemental level had no significant influences on eviscerated ratio, half eviscerated ratio and muscle quality indices including pH, drip loss ratio, shear force and meat color ( L∗, a∗and b∗values) ( P>0.05). However, with the increase of dietary cobalt supplemental level, the eviscerated ratio and half eviscera⁃ted ratio tended to be increased firstly and then decreased. Dietary cobalt supplemental level had no significant influences on fur area, fur weight and fur thickness ( P>0.05) . With the increase of dietary cobalt supplemen⁃tal level, the fur weight tended to be increased firstly and then decreased, and the highest value appeared when dietary cobalt supplemental level was 0. 4 mg/kg. Dietary cobalt supplemental level had no significant influ⁃ences on thymus index, spleen index and liver index ( P>0.05) . With the increase of dietary cobalt supplemen⁃tal level, the thymus index tended to be increased firstly and then decreased, and the highest value appeared when dietary cobalt supplemental level was 0.4 mg/kg. Considering all indices of this experiment, the appro⁃priate dietary cobalt supplemental level is 0.4 mg/kg for weaned to 3⁃month⁃old growing Rex rabbits ( the basal diet cobalt content is 0.27 mg/kg).关键词
钴/獭兔/生长性能/屠宰性能/皮张质量/免疫性能Key words
cobalt/Rex rabbits/growth performance/slaughter performance/fur quality/immune perform-ance分类
农业科技引用本文复制引用
高琴,刘磊,隋啸一,孙海涛,刘公言,李福昌..饲粮钴添加水平对断奶至3月龄獭兔生长性能、屠宰性能、肌肉品质和皮张质量的影响[J].动物营养学报,2016,28(11):3694-3700,7.基金项目
现代农业产业技术体系建设专项（ CARS-44-B-1）；山东省现代农业产业技术体系特种经济动物创新团队（ SDAIT-21-12）；中国博士后科学基金资助项目 （）
