杂交组合对肉牛育肥效果的影响

发布时间：2019-01-16 00:41

【摘要】：试验旨在研究杂交组合对肉牛育肥效果的影响。采用单因素分组试验设计,选取体重和年龄相近、生长发育正常的西门塔尔牛×科尔沁牛(西科,A组)、夏洛莱牛×科尔沁牛(夏科,B组)及科尔沁牛(C组)各10头公牛,正试期95d后,测定其体重,屠宰、肉品质等指标,并核算经济效益。结果显示,杂交对采食量无显著影响(P0.05),但杂交组牛料重比、肌肉脂肪含量显著低于科尔沁牛(P0.05),杂交组牛的胴体重、净肉重、胴体率及前腿、腹肉、脊肉和后腿重量均显著高于科尔沁牛(P0.05),各组之间16种氨基酸含量差异不显著(P0.05),西科、夏科杂交牛及科尔沁牛之间棕榈油酸、硬脂酸、亚油酸含量存在差异。结果表明,在本试验条件下,杂交组牛育肥效果和经济效益好于科尔沁牛,但科尔沁牛的脂肪和不饱和脂肪酸含量高于杂交组合牛;杂交组合对肉牛的综合育肥效果更好。
[Abstract]:The purpose of the experiment was to study the effect of cross combination on fattening effect of beef cattle. The single factor grouping design was used to select Simmental 脳 Horqin cattle with similar body weight and age and normal growth and development (Xicaceae, Group A), Charolais cattle 脳 Horqin cattle (Characeae), and Simmental cattle 脳 Horqin cattle (Group A) with normal growth and development. Group B (n = 10) and Horqin (group C) (n = 10) were tested for body weight, slaughtering, meat quality and economic benefit after 95 days of trial. The results showed that cross had no significant effect on feed intake (P0.05), but the content of muscle fat in crossbred group was significantly lower than that in Horqin cattle (P0.05). The carcass weight, net meat weight, carcass rate, foreleg and abdominal meat of crossbred cattle were significantly lower than those of Horqin cattle (P0.05). The weight of ridge meat and hind leg was significantly higher than that of Horqin cattle (P0.05), and there was no significant difference in 16 kinds of amino acids among the groups (P0.05), palmitic oil acid, stearic acid, palmitic oil acid and stearic acid were found between Xicaceae, summer crossbred cattle and Horqin cattle. The content of linoleic acid is different. The results showed that the fattening effect and economic benefit of crossbred cattle were better than that of Horqin cattle, but the content of fat and unsaturated fatty acids of Horqin cattle was higher than that of hybrid cattle, and the crossbred group had better comprehensive fattening effect on beef cattle.
【作者单位】：北京市畜牧总站;北京农业职业学院;北京卓宸畜牧有限公司;
【基金】：北京市农业局科技项目(20120634)
【分类号】：S823

【参考文献】