不同年龄麦洼牦牛肉品质分析  

Meat quality analysis of Maiwa yak at different ages

作　　者：赵洪文[1] 安添午[1] 官久强[1] 吴伟生[1] 谢荣清[1] 李华德[1] 罗晓林[1] ZHAO Hongwen;AN Tianwu;GUAN Jiuqiang;WU Weisheng;XIE Rongqing;LI Huade;LUO Xiaolin(Sichuan Academy of Grassland Sciences,Chengdu 611731,China)

机构地区：[1]四川省草原科学研究院,成都611731

出　　处：《黑龙江畜牧兽医》2021年第1期142-144,148,共4页Heilongjiang Animal Science And veterinary Medicine

基　　金：国家肉牛牦牛产业技术体系项目(CARS-37);第二次青藏高原综合科学考察研究项目(2019QZKK0302)。

摘　　要：为了解1.5~3.5岁麦洼牦牛的肉质品质规律,试验选择1.5岁10头、2.5岁8头、3.5岁8头麦洼牦牛进行屠宰并测定牦牛肉pH值、色差、熟肉率及剪切力等肉质指标。结果表明:1.5岁、2.5岁及3.5岁麦洼牦牛肉pH_(1h)值与pH_(24h)值之间差异极显著(P<0.01),剪切力、熟肉率差异不显著(P>0.05)。3.5岁麦洼牦牛肉的亮度(Lightness,L^(*))值、色相角度(H)值、红度(a^(*))值、黄度(b^(*))值和颜色饱和度(C)值与1.5岁、2.5岁麦洼牦牛之间差异极显著(P<0.01);黄度(b^(*))值与1.5岁麦洼牦牛差异极显著(P<0.01);与2.5岁麦洼牦牛差异显著(P<0.05)。说明1.5岁、2.5岁及3.5岁麦洼牦牛肉肉质均较好,且嫩度较低、加工性能良好,其中3.5岁龄麦洼牦牛肉更好。In order to understand the meat quality rule of Maiwa yak aged 1.5-3.5 years old, 10, 8 and 8 Maiwa yaks aged 1.5, 2.5 and 3.5 years were slaughtered for meat quality determination, including pH value, color difference, cooked meat rate and shear force. The results showed that there were extremely significant differences between Maiwa yak meat at 1.5, 2.5 and 3.5 years old(P<0.01) at pH_(1h) and pH_(24h), but no significant differences in shear force and cooked meat rate(P>0.05). The brightness(L^(*)) value, hue angle(H) value, the redness(a^(*)) value, the yellowness(b^(*)) value and the color saturation(C) value of 3.5 years old Maiwa yak were significantly different from that of 1.5 or 2.5 years old Maiwa yak(P<0.01). The yellowness(b^(*)) value was extremely significantly different from that in 1.5 years old Maiwa yak(P<0.01), and significantly different from that of 2.5 years old Maiwa yak(P<0.05). The results indicated that the meat quality of Maiwa yak aged 1.5, 2.5 and 3.5 years was better, and its tenderness was lower and processing performance was good, among which the quality of Maiwa yak beef aged 3.5 years was the best.

关 键 词：麦洼牦牛 pH值 色差 熟肉率 剪切力 

分 类 号：S879.2[农业科学—畜牧兽医] TS251.52[轻工技术与工程—农产品加工及贮藏工程]