燕山绒山羊背最长肌和股二头肌肉品质特性研究  

Study on quality characteristics of longissimus muscle and biceps femoris muscle in Yanshan cashmere goats

作　　者：高思慧 李雪茹 乔贤 刘铮铸[1,2] 巩元芳 杨卫军[3] 王建涛 谢遇春 GAO Si-hui;LI Xue-ru;QIAO Xian;LIU Zheng-zhu;GONG Yuan-fang;YANG Wei-jun;WANG Jian-tao;XIE Yu-chun

机构地区：[1]河北科技师范学院动物科技学院,河北秦皇岛066600 [2]河北省特色动物种质资源开发与创新重点实验室,河北秦皇岛066600 [3]秦皇岛市动物疫病预防控制中心,河北秦皇岛066000 [4]唐山市畜牧技术推广站,河北唐山063000

出　　处：《饲料研究》2024年第20期97-103,共7页Feed Research

基　　金：河北科技师范学院博士启动基金项目(项目编号:2022YB032);河北省高等学校科学技术研究项目(项目编号:QN2022165);河北科技师范学院高等基本科研业务费专项项目(项目编号:2023JK06);河北省羊产业技术体系创新团队遗传资源开发与利用岗位专家项目(项目编号:HBCT2023200201);河北省研究生创新创业项目(项目编号:CXZZSS2023158)。

摘　　要：试验旨在探究燕山绒山羊背最长肌和股二头肌的肉品质差异。试验选取10只30月龄燕山绒山羊,分别测定其屠宰性能、肌肉理化性质和营养成分。结果显示:燕山绒山羊平均宰前体重为34.81 kg,胴体重为16.5 kg,屠宰率为48.2%,眼肌面积为13.69 cm^(2),GR值为7.43 mm。燕山绒山羊背最长肌粗蛋白含量极显著高于股二头肌(P<0.01),股二头肌肌内脂肪含量极显著高于背最长肌(P<0.01),背最长肌C18∶0含量极显著高于股二头肌(P<0.01),股二头肌C20∶0含量显著高于背最长肌(P<0.05)。相关性分析结果显示:在背最长肌中,水分与粗蛋白含量呈极显著正相关(P<0.01),滴水损失与剪切力呈极显著负相关(P<0.01);在股二头肌中,水分与pH值呈显著正相关(P<0.05),滴水损失与红度(a*)值呈显著正相关(P<0.05),肌肉a*值与黄度(b*)值呈极显著正相关(P<0.01),亮度(L*)值与b*值呈极显著正相关(P<0.01),肌内脂肪含量与熟肉率呈显著负相关(P<0.05)。研究表明,燕山绒山羊股二头肌肌内脂肪沉积多,而背最长肌粗蛋白含量高。The study aimed to explore the differences in muscle quality characteristics between the longissimus muscle and the biceps femoris muscle of Yanshan cashmere goats.The experiment selected 10 Yanshan cashmere goats at the age of 30 months and measured their slaughter performance,muscle physicochemical properties,and nutritional components respectively.The results showed that the average pre-slaughter body weight of the Yanshan cashmere goats was 34.81 kg,with a carcass weight of 16.5 kg,a slaughter rate of 48.2%,an eye muscle area of 13.69 cm^(2),and a GR value of 7.43 mm.The crude protein content in the longissimus muscle was extremely higher than that in the biceps femoris(P<0.01),while the intramuscular fat content in the biceps femoris was extremely higher than in the longissimus muscle(P<0.01).The C18∶0 content in the longissimus muscle was extremely higher than in the biceps femoris(P<0.01),and the C20∶0 content in the biceps femoris was significantly higher than in the longissimus muscle(P<0.05).Correlation analysis showed that in the longissimus muscle,moisture content was extremely positively correlated with crude protein content(P<0.01),and water loss was extremely negatively correlated with shear force(P<0.01).In the biceps femoris,moisture content was significantly positively correlated with pH value(P<0.05),water loss was significantly positively correlated with redness(a*)value(P<0.05),the muscle a*value was extremely positively correlated with yellowness(b*)value(P<0.01),lightness(L*)value was extremely positively correlated with b*value(P<0.01),and intramuscular fat content was significantly negatively correlated with cooked meat yield(P<0.05).The study suggests that the biceps femoris of Yanshan cashmere goats has more intramuscular fat deposition,while the longissimus muscle has a higher crude protein content.

关 键 词：燕山绒山羊 背最长肌 股二头肌 屠宰性能 肉质特性 

分 类 号：S826[农业科学—畜牧学]