【摘要】 【目的】测定周岁哈萨克羊胴体性状及脂肪酸成分，分析周岁哈萨克羊产肉性能及影响羊肉风味及品质的主要物质，为羊肉生产及产品研发提供新的思路。【方法】随机选取20只周岁哈萨克羊，公母各10只，屠宰并采集背肌，测定4个性状并记录数据。利用内标法测定哈萨克羊肌内脂肪成分，使用SPSS和Excel软件对数据进行多重比较和相关性分析。【结果】周岁哈萨克羊的宰前活重、胴体重、净肉重、尾重、尾重占胴体重百分比、屠宰率、背肌与性别呈极显著相关。饱和脂肪酸（SFA）中棕榈酸（C16:0）含量最高。单不饱和脂肪酸（MUFA）中，反式油酸（C18:1n9t）含量最高。多不饱和脂肪酸（PUFA）中，亚油酸（C18:2n6c）含量最高。【结论】通过对哈萨克羊胴体分析和肌内脂肪酸成分分析发现，周岁哈萨克羊屠宰性能测定结果与前人研究结果一致，尾脂占胴体7.92%～12.54%。哈萨克羊肌内脂肪酸中含有丰富的ω-3和ω-6多不饱和脂肪酸，具有良好的保健作用。更多还原

【Abstract】 【Objective】In order to Measure the carcass traits and fatty acid composition of one-year-old Kazakh sheep,analyze the mutton performance of one-year-old Kazakh sheep and the main substances affecting the meat flavor and quality,so as to provide new ideas for mutton production and development.【Methods】Twenty one-year-old Kazakh sheep,10 males and 10 females,were randomly selected and slaughtered,and dorsal muscles were collected,four traits were determined and data were recorded.Intramuscular fat composition of Kazakh sheep was determined using the internal standard method,and multiple comparisons and correlation analysis were carried out using SPSS and EXCEL software.【Results】Pre-slaughter live weight,carcass weight,net meat weight,tail weight,percentage of tail weight to carcass weight,slaughter rate and dorsal muscle of one-year-old Kazakh sheep were extremely significantly correlated with sex,and the content of palmitic acid(C16:0)was highest in saturated fatty acids(SFA),so was the content of trans-oleic acid(C18:1n9t)in monounsaturated fatty acids(MUFA),the linoleic acid(C18:2n6c)in polyunsaturated fatty acids(PUFA).【Conclusion】Based on the carcass analysis and intramuscular fatty acid composition analysis for Kazakh sheep,it was found that the determination results of slaughter performance of one-year-old Kazakh sheep were consistent with previous studies,tail fat accounted for 7.92% to 12.54% of the carcass. Intramuscular fatty acids were rich in omega-3 and omega-6 polyunsaturated fatty acids,which had good effects for human health.更多还原