性别对湖羊产肉量及肉品质特性的影响  

Effect of gender on meat production and meat quality characteristics of Hu sheep

作　　者：鲍梦环 徐杰 王奕猛 王慧宁 毛秋彤 孙晓梅 李拥军[1] BAO Menghuan;XU Jie;WANG Yimeng;WANG Huining;MAO Qiutong;SUN Xiaomei;LI Yongjun(College of Animal Science and Technology,Yangzhou University,Yangzhou 225009,China)

机构地区：[1]扬州大学动物科学与技术学院,江苏扬州225009

出　　处：《扬州大学学报（农业与生命科学版）》2024年第2期134-140,共7页Journal of Yangzhou University：Agricultural and Life Science Edition

基　　金：江苏省重点研发计划项目(BE2020313)。

摘　　要：为了解性别对湖羊产肉量及肉品质特性的影响,选取8月龄公母湖羊各7只,测定其屠宰性能、背最长肌食用品质、肌肉微观结构及营养成分。结果表明:公羊眼肌面积显著高于母羊,背最长肌剪切力和蒸煮损失显著高于母羊;性别对湖羊肌肉微观结构有较大影响,相对于母羊,公羊肌纤维直径较大,肌肉组织紧密,肌纤维骨架蛋白紧密折叠;不同性别湖羊肌肉营养成分存在显著差异,其中公羊背最长肌水分、粗蛋白质和芥酸含量显著高于母羊,粗脂肪含量显著低于母羊,且母羊肉未检测到二十碳三烯酸;母羊背最长肌必需氨基酸和鲜味氨基酸含量高于公羊。综上,湖羊公羊屠宰性能和肌纤维形态较好,母羊食用品质、肌纤维骨架蛋白形态和肌肉营养价值优于公羊。In order to explore the effect of gender on the meatquality characteristics of Hu sheep,seven August-aged Hu sheep were selected to determine their slaughter performance,eating quality of longissimus dorsi,muscle microstructure and nutritional components.The results showed that the loin eye area of ram was significantly higher than that those of ewes,the shear force and cooking loss of ram longissimus dorsi were significantly higher than those of ewes.Gender had a great effect on the muscle microstructure of Hu sheep.Compared with ewe,ram's muscle fiber diameter was larger,muscle tissue was tight and muscle skeleton protein was tightly folded.There were significant differences in the nutritional composition of Hu sheep meat between different genders.The contents of water,crude protein and erucic acid in longissimus dorsi of ram were significantly higher than that of the ewes,and the contents of crude fat were significantly lower than ewe,C20:3n6 was not detected in ewes.The contents of essential amino acid and umami amino acids in longissimus dorsi of ewes were higher than those of rams.In general,the slaughter performanceand muscle fiber morphology of Hu sheep were better that those of ewes,the food quality,muscle fiber skeleton protein morphology and nutritional components were better than that of the rams.

关 键 词：湖羊 性别 产肉量 肉品质 

分 类 号：S826[农业科学—畜牧学]