饲粮中添加不同比例的地椒对滩羊生长性能、屠宰性能及肉品质的影响  

Effects of Diets with Different Proportions of Thymus quinquecostatus on Growth Performance,Slaughter Performance and Meat Quality of Tan Sheep

作　　者：马小明 吴建平[1,3] 李聚才 郎侠[3] 丁伟 孙文阳 王秀琴 MA Xiaoming;WU Jianping;LI Jucai;LANG Xia;DING Wei;SUN Wenyang;WANG Xiuqin(College of Animal Science and Technology Gansu Agricultural University,Lanzhou 730070,China;Institute of Animal Science,Ningxia Academy of Agriculture and Forestry Sciences,Yinchuan 750002,China;Gansu Academy of Agricultural Sciences,Lanzhou 730000,China)

机构地区：[1]甘肃农业大学动物科学技术学院,兰州730070 [2]宁夏农林科学院动物科学研究所,银川750002 [3]甘肃省农业科学院,兰州730000

出　　处：《动物营养学报》2021年第11期6223-6232,共10页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：宁夏农林科学院对外交流合作项目(DW-X-2018021,DW-X-2018017);宁夏青年科技人才托举工程项目(TJGC2018007);宁夏肉牛滩羊产业提质增效路径研究课题(NGSB-2021-12-13)。

摘　　要：本试验旨在研究饲粮中添加不同比例的地椒对滩羊生长性能、屠宰性能及肉品质的影响。选取体重(22.0±3.0)kg的滩羊羔羊45只,按照单因子试验设计,随机分为3组,每组15只(公羔8只,母羔7只)。对照组饲喂基础饲粮,试验1组与试验2组在基础饲粮的基础上分别添加5%和10%的地椒。预试期10 d,正试期42 d。结果表明:1)3组滩羊生长性能与屠宰性能无显著差异(P>0.05)。2)试验2组滩羊背最长肌的系水力极显著高于对照组(P<0.01),熟肉率显著高于对照组(P<0.05)。3)试验1组背最长肌中绝大多数氨基酸的含量显著或极显著高于对照组(P<0.05或P<0.01)。4)试验1组滩羊背最长肌中C8∶0与C16∶0的含量极显著低于对照组(P<0.05),且n-6多不饱和脂肪酸(PUFA)/n-3 PUFA的比例更加合理。由此可见,饲粮中添加10%的地椒可以改善滩羊的肉品质,添加5%的地椒可改善滩羊肉的营养价值与风味。This experiment was conducted to investigate the effects of diets with different proportions of Thymus quinquecostatus on growth performance,slaughter performance and meat quality of Tan sheep.Forty-five Tan lambs with the body weight of(22.0±3.0)kg were randomly divided into 3 groups with 15 sheep(8 male lambs and 7 female lambs)in each group according to a single factor experimental design.Sheep in the control group were fed a basal diet,the others in the test groups 1 and 2 were fed the basal diet supplemented with 5%and 10%Thymus quinquecostatus,respectively.The pre-test lasted for 10 days,and the trial period lasted for 42 days.The results showed as follows:1)there were no significant differences in growth performance and slaughter performance of Tan sheep among 3 groups(P>0.05).2)The water-holding capacity of longissimus dorsi muscle of Tan sheep in test group 2 was extremely significantly higher than that in control group(P<0.01),and the cooked meat rate was significantly higher than that in control group(P<0.05).3)The contents of most amino acids in longissimus dorsi muscle of Tan sheep in test group 1 was significantly or extremely significantly higher than those in control group(P<0.05 or P<0.01).4)The contents of C8∶0 and C16∶0 in longissimus dorsi muscle of Tan sheep in test group 1 was significantly lower than that of control group(P<0.05),and the ratio of n-6 polyunsaturated fatty acids(PUFA)to n-3 PUFA in test group 1 was more rational than control group.In summary,diets supplemented with 10%Thymus quinquecostatus can improve the meat quality of Tan sheep,and diets with 5%Thymus quinquecostatus can improve the meat nutritional value and flavor of Tan sheep.

关 键 词：滩羊 地椒花 生长性能 屠宰性能 肉品质 

分 类 号：S816[农业科学—饲料科学]