安格斯与西杂牛杂交后代肉品质比较研究

Comparative study on meat quality of crossbred offspring of Angus and West cross cattle

中文关键词: 安格斯，西杂牛、安西杂牛、肉品质

英文关键词: Angus, Limousin, Siza  cattle, Anxi  mixed cattle, meat  quality

中文摘要:

      本试验研究了西杂牛、安西杂交F1代、安西杂交F2代的肉品质,为生产高端牛肉产品提供参考。本试验选取28-30月龄,平均体重在600±15kg左右,体况良好的西杂牛、安西杂牛F1代、安西杂牛F2代各9头,分为3组,每组3个重复,每个重复3头牛,分为西杂牛组、安西杂牛F1代组、利西杂牛F2代组,进行屠宰,胴体在0-4℃的排酸车间成熟10d后再进行分割,测定肉品质。结果表明：(1)三个试验组牛肉的pH1h、pH24h值差异不显著(P >0.05);安西杂F1代和安西杂F2代的肉色指标红度(a)值差异不显著(P >0.05),但均显著大于西杂牛(P <0.05)；西杂牛组的剪切力最大,且显著高于其他两组(P <0.05)；安西杂F1代和安西杂F2代的熟肉率差异不显著(P >0.05),但均显著大于西杂牛(P <0.05)。(2)西杂牛组的水分含量最大,安西杂F2代的粗蛋白质含量最大,但各组之间水分和粗蛋白质含量差异不显著(P >0.05)；安西杂F2代的粗脂肪含量最高,且显著高于西杂牛组(P <0.05)。综上所述,安西杂交后代牛肉的肉品质更鲜嫩,且肌间脂肪含量较多,有生产高端牛肉的潜力。

英文摘要:

      The meat quality of western hybrid cattle, Anxi hybrid F1 generation and Anxi hybrid F2 generation was studied in this experiment, which provided reference for producing high-end beef products. In this experiment, 9 western hybrid cattle, F1 generation of Anxi hybrid cattle and F2 generation of Anxi hybrid cattle aged 28-30 months with an average body weight of 600±15kg were selected and divided into 3 groups with 3 replicates per group and 3 cattle per replicate. They were divided into West hybrid cattle group, F1 generation of Anxi hybrid cattle and F2 generation of Lixi hybrid cattle for slaughter. The carcasses were ripened for 10 days at 0-4℃ and then divided to determine the meat quality.The results indicate that：(1) The pH1h and pH24h values of beef in three experimental groups were not significantly different (P >0.05). There was no significant difference in the redness (a) value of meat color index between the F1 and F2 generations (P >0.05), but it was significantly higher than that of the western hybrid cattle (P <0.05). The shear force of western hybrid cattle group was the highest, and significantly higher than that of the other two groups (P <0.05). There was no significant difference in cooked meat rate between Anxiza F1 generation and Anxiza F2 generation (P >0.05), but both were significantly higher than that of West hybrid cattle (P <0.05).(2) The water content of west hybrid cattle group was the highest, and the crude protein content of Anzeza F2 generation was the highest, but there were no significant differences in water and crude protein contents among all groups (P >0.05). The crude fat content of F2 generation was the highest, and significantly higher than that of West hybrid cattle group (P <0.05). In summary, the meat quality of Anxi hybrid offspring beef is more tender, and the intermuscular fat content is more, which has the potential to produce high-end beef.