天然牧草干草和草颗粒对乌珠穆沁羔羊生产性能、屠宰性能和肉品质的影响  

Effect of Pellet Feeding System on Growth Performance, Carcass Characteristics and Meat Quality in Wuzhumuqin Lamb

作　　者：周玉雷 都帅[1] 刘昊 尤思涵 包健 格根图 贾玉山 ZHOU Yu-lei;DU Shuai;LIU Hao;YOU Si-han;BAO Jian;Gegentu;JIA Yu-shan(Key Laboratory of Forage Cultivation, Processing and High Efficient Utilization, Ministry of Agriculture, P .R. of China/Key Laboratory of Grassland Resources, Ministry of Education,P .R. of China/College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot 010011, China;Life Science College of Chifeng University, Chifeng 024000, China;Hulunbuir Grassland Station,Hulunbuir 021000, China)

机构地区：[1]饲草栽培、加工与高效利用农业部重点实验室/草地资源教育部重点实验室/内蒙古农业大学草原与资源环境学院,内蒙古呼和浩特010011 [2]赤峰学院生命科学学院,内蒙古赤峰024000 [3]呼伦贝尔市草原工作站,内蒙古呼伦贝尔021000

出　　处：《中国草地学报》2019年第3期173-178,共6页Chinese Journal of Grassland

基　　金：十三五国家重点研发计划(2017YFD052013);草产品加工利用关键技术研发与产业化示范创新人才团队

摘　　要：研究天然牧草干草和草颗粒对乌珠穆沁羔羊生产性能、屠宰性能和肉品质的影响。选取20只6月龄体重为(28.60±0.31 kg)乌珠穆沁公羔羊,采用单因素随机区组设计,随机分为2组,每组10只。设计2种日粮饲喂乌珠穆沁羔羊,分别为以天然草地牧草为原料调制成的干草和草颗粒。结果表明:(1)草颗粒组的采食量、日增重、胴体重、宰前活重、净肉重、眼肌面积和GR值均显著高于干草组(P<0.05)。(2)草颗粒组羔羊肉中的蛋白质、磷、胆固醇含量、大理石纹、失水率均显著高于干草组(P<0.05),但其脂肪、钙含量和肉质红度、黄度显著低于干草组(P<0.05)。(3)草颗粒组羔羊肉中的重要脂肪酸组分棕榈酸、硬脂酸、亚油酸、α-亚麻酸、饱和脂肪酸、单不饱和脂肪酸、多不饱和脂肪酸、n-6、n-3及谷氨酸、半胱氨酸、异亮氨酸含量均显著高于干草组(P<0.05),但n-6/n-3、络氨酸和精氨酸含量均显著低于干草组(P<0.05)。因此,饲喂草颗粒能显著提高乌珠穆沁羔羊的生产性能和屠宰性能,并能有效优化羔羊肉的风味及品质。The objective of this study was to investigate the growth performance, carcass characteristics, and meat quality of Wuzhumuqin lamb fed hay or pellet.(Method) Twenty Wuzhumuqin lambs with good healthy, same age and similar body weight (28.60 ± 0.31 kg) were randomly divided into two groups, one group fed hay and another fed pellet (n=10).(1)The intake, average daily gain, carcass weight, body weight before slaughter, loin muscle area and GR value of pellet was significantly higher than those in the hay (P<0.05).(2)The protein, P, cholesterol, marbling score and water loss rate of pellet was significantly higher than those in the hay (P<0.05).(3)The C16:0, C18:0, C18:2n6c, C18: 3n3, SFA, MUFA, PUFA, n-6, n-3, Glu, Cys and Ile in pellet were significant higher than those in hay (P<0.05), and Tyr, Arg in pellet were significantly lower than that in hay (P<0.05). Consequently, Native grass pellet has a potential benefit on growth performance, carcass characteristics and meat quality.

关 键 词：干草 草颗粒 乌珠穆沁羊 生产性能 屠宰性能 肉品质 

分 类 号：S826.5[农业科学—畜牧学]