摘要
[目的]本试验旨在研究基础日粮中添加不同比例黄芪,对太行黑山羊产肉性能和肉品质的影响。[方法]试验选用80只体重、日龄相近的太行黑山羊,随机分为4组,每组5个重复,分别为:基础日粮(对照组)组、基础日粮+1.5%黄芪组、基础日粮+2.5%黄芪组、基础日粮+3.5%黄芪组,正试期为60d。测定各组生产性能和背最长肌、后腿及肝脏的肉品质指标。[结果]与对照组相比,基础日粮+2.5%黄芪组和基础日粮+3.5%黄芪组可显著提高背最长肌和后腿肉中肌苷酸、必需脂肪酸(棕榈酸、亚油酸、a-亚麻酸、花生四烯酸)和呈味氨基酸(谷氨酸、酪氨酸、苯丙氨酸、天冬氨酸、丙氨酸、甘氨酸)含量(p<0.05);但2.5%黄芪组和3.5%黄芪组间差异不显著(p>0.05)。[结论]在山羊饲粮中添加适量的黄芪可提高其肌肉中的肌苷酸、必需脂肪酸和呈味氨基酸的含量,提高羊肉品质,且基础日粮中黄芪的适宜添加量为2.5%~3.5%。
[Objective]The study was to investigate the effect of dietary Astragalus on production performance and meat quality of Taihang black goats.[Methods]80 goats（180 days of age,with similar body weight）were randomly selected and equally assigned into 4 groups with 4 replicates,fed with different diet：basal diet,basal diet supplemented with 1.5%,2.5% and 3.5% Astragalus.60 days later,all animals were slaughtered.the inosinic acid,essential fatty acids,and flavor amino acids in longissimus doral muscle,rear legs and liver were determined.[Results]The results showed that compared with the control group,basal diet supplement with 2.5% Astragalus significantly improved inosinic acid,flavor amino acid（aspartic acid,glutamic acid,tyrosine,glycine,alanine and phenylalanine）and essential fatty acid（palmitic acid,linoleic acid,linolenic acid,α-four arachidonic acid）of LD muscle and rear legs（P 〈0.05）.All index showed the contents of the three components were the highest when goats received 3.5% dietary Astragalus,and there was no significant difference with other experimental groups.[Conclusion]Dietary Astragalus supplementation in goat can maintain the production performance,and improved the inosinic acid,essential fatty acid and flavor amino acid contents of muscle,therefore improve the meat quality.In this experiment condition,the optimal supplementary concentration should be 2.5%～3.5% in basal diet.
作者
杜丽英
闫一波
王福传
宋献艺
张凯
Du Liying Yan Yibo Wang Fuchuan Song Xianyi Zhang Kai(Institute of Feed and Veterinary Drug, Shanxi Academy of Agricultural Sciences, Taiyuan 030032, China Institute of Animal Husbandry and Veterinary, Shanxi Academy of Agricultural Sciences, Taiyuan 030031 , China)
出处
《山西农业大学学报（自然科学版）》
CAS
2017年第7期504-509,共6页
Journal of Shanxi Agricultural University(Natural Science Edition)
基金
山西省农业科学院科技攻关项目(YGG1510)
关键词
太行黑山羊
黄芪
生产性能
肉品质
Taihang black goats
Astragalus
Production performance
Meat quality
