天华肉羊与甘肃高山细毛羊的屠宰性能和肉品质比较  

Comparison of Slaughtering Performance and Meat Quality in Tianhua Mutton Sheep and Gansu Alpine Fine Wool Sheep

作　　者：刘占经 栗登攀 马友记[2] LIU Zhanjing;LI Dengpan;MAYouji(Animal Disease Prevention and Control Center of Tianzhu County,Tianzhu 733000,China;College of Animal Science and Technology,Gansu Agricultural University,Lanzhou 730070,China)

机构地区：[1]天祝县动物疫病预防控制中心,天祝733000 [2]甘肃农业大学动物科学技术学院,兰州730070

出　　处：《中国草食动物科学》2024年第4期39-44,共6页China Herbivore Science

基　　金：国家自然科学基金项目(32260833)。

摘　　要：为探讨天华肉羊与甘肃高山细毛羊两个品种的肉用性能差异,选择自然放牧条件下两个品种的6月龄育成母羊各6只进行屠宰,测定其屠宰性能、肉品质以及肌纤维特性。结果表明:①天华肉羊的宰前活重、肾脏重、眼肌面积均显著高于甘肃高山细毛羊(P<0.05)。②天华肉羊肉色指标中的亮度值(L*)、红度值(a*)、黄度值(b*)均显著高于甘肃高山细毛羊(P<0.05),脂肪含量显著低于甘肃高山细毛羊(P<0.05)。③天华肉羊的肌纤维直径和面积均显著低于甘肃高山细毛羊(P<0.05)。④两个品种羊均表现为宰前活重与眼肌面积、胴体重、肾脏重呈显著正相关(P<0.05);脾脏重与肝脏重、肾脏重呈显著正相关(P<0.05);pH45 min值与红度呈显著正相关(P<0.05);肌纤维直径与宰前活重呈显著负相关(P<0.05)。综上所述,与甘肃高山细毛羊相比,天华肉羊的肉用性能得到了很大提升,具有良好的推广价值。To explore the differences in meat performance between Tianhua mutton sheep and Gansu alpine fine wool sheep,six 6-month-old ewes from each of the two breeds under natural grazing conditions were selected for slaughter,then the slaughter performance,meat quality,and muscle fiber characteristics were measured.The results showed as follows:①The pre slaughter live weight,kidney weight,and eye muscle area of Tianhua mutton sheep were significantly higher than those of Gansu alpine fine wool sheep(P<0.05).②The L*,a*and b*values of meat color indexes were all significantly higher in Tianhua mutton sheep than in Gansu alpine fine wool sheep(P<0.05),and the fat content of Tianhua mutton sheep was significantly lower than in Gansu alpine fine wool sheep(P<0.05).③The diameter and area of muscle fibers of Tianhua mutton sheep were significantly lower than those of Gansu alpine fine wool sheep(P<0.05).④Both species of sheep showed a significant positive correlation between pre slaughter live weight and eye muscle area,carcass weight,and kidney weight(P<0.05);spleen weight was positively correlated with liver weight and kidney weight(P<0.05);there was a significant positive correlation between pH45min and redness(P<0.05);there was a significant negative correlation between muscle fiber diameter and live weight before slaughte(P<0.05).In summary,compared with Gansu alpine fine wool sheep,the meat performance of Tianhua mutton sheep has been greatly improved,and it has good promotion and utilization value.

关 键 词：天华肉羊 甘肃高山细毛羊 肉品质 屠宰性能 

分 类 号：S826.5[农业科学—畜牧学]