动物营养学报2017，Vol.29Issue(2)：590-596,7.DOI:10.3969/j.issn.1006-267x.2017.02.027
饲粮添加亮氨酸和谷氨酸对肥育猪生长性能、胴体性状和肉品质的影响
Effects of Dietary Leucine and Glutamate on Growth Performance,Carcass Traits and Meat Quality of Finishing Pigs
摘要
Abstract
This study was conducted to investigate the effects of dietary leucine and glutamate on growth performance, carcass traits and meat quality of finishing pigs.Sixty Duroc×Large White×Landrace pigs with about77 kg of average body weight were randomly assigned to 5 groups with 12 pigs per group (half male and half female).The pigs in the control group were fed the basal diet, and others in the experiment groups were fed the basal diet supplemented with 2.05％ L-alanine (iso-nitrogenous control group), 1.00％ leucine+1.37％ Lalanine (leucine group), 1.00 ％ glutamate + 1.44％ L-alanine (glutamate group) and 1.00％ leucine + 1.00％glutamate (leucine+glutamate group), respectively.The experiment lasted for 60 days.The results showed that compared with the control group, the average daily feed intake during 1 to 30 days, final body weight and back fat thickness of pigs in glutamate group were significantly decreased (P < 0.05), and the average daily gain during 31 to 60 days was decreased by 22.5％ (P>0.05);the intramuscular fat content in Longissimus dorsi muscle and Biceps femoris muscle of pigs in leucine group and leucine+glutamate group was significantly increased (P<0.05), and the average day gain during 1 to 30 days was increased by 8.04％ but that during 31 to60 days was decreased by 23.70％ (P>0.05).Compared with the iso-nitrogenous control group, the cooking rate, drip loss and meat color in leucine group and glutamate group had no significant difference (P>0.05),while the meat yellowness value in leucine+glutamate group was significantly decreased (P<0.05), the contents of flavor amino acids in Longissimus dorsi muscle and Biceps femoris muscle had no significant difference among all experiment groups (P>0.05).These findings suggest that diet supplemented with 1.00％ leucine can decrease the ratio of feed to gain during 1 to 30 days and increase the content of intramuscular fat in Longissimus dorsi muscle;diet supplemented with 1.00％ glutamate or 1.00％ leucine+1.00％ glutamate can increase the average daily gain during 1 to 30 days and decrease the average daily gain during 31 to 60 days;diet supplemented with 1.00％ leucine+1.00％ glutamate can decrease the meat color yellowness value, improve intramuscular fat content and meat quality of finishing pigs.[Chinese Journal of Animal Nutrition, 2017, 29 (2) :关键词
亮氨酸/谷氨酸/肥育猪/生长性能/肉品质Key words
leucine/glutamate/finishing pigs/growth performance/meat quality分类
农业科技引用本文复制引用
胡诚军,张婷,李华伟,印遇龙,江青艳,孔祥峰..饲粮添加亮氨酸和谷氨酸对肥育猪生长性能、胴体性状和肉品质的影响[J].动物营养学报,2017,29(2):590-596,7.基金项目
国家973计划课题(2012CB124704) （2012CB124704）
国家自然科学基金面上项目(31270044) （31270044）
中央驻湘科研机构技术创新发展专项(2013TF3006) （2013TF3006）
