【摘要】 经８５ ｄ 的育肥试验结果表明，在育肥期间利延Ｆ１ 牛的体高、体长、胸宽、胸深、胸围和髋宽等体尺的增长值均高于延边黄牛，其中利延Ｆ１ 牛髋宽的增长值显著高于延边黄牛（ｐ ＜ ０ ．０１） ．育肥期间延边黄牛与利延Ｆ１ 牛的日增重分别为０ ．８９ ｋｇ 和１ ．０６ ｋｇ，利延Ｆ１ 牛比延边黄牛高１９ ．１ ％ ，差异显著（ｐ＜ ０ ．０５） ；消化试验结果表明，延边黄牛与利延Ｆ１ 牛对日粮中的粗蛋白、粗脂肪、中性洗涤纤维和酸性洗涤纤维的消化率差异不显著（ｐ ＞ ０ ．０５） ；屠宰试验结果表明，延边黄牛与利延Ｆ１ 牛的屠宰率分别是５１ ．６ ％ 和５４．４ ％ ，净肉率分别是３９ ．２ ％ 和４３ ．９ ％ ，肉骨比分别是３ ．１５ 和４ ．１８ ，眼肌面积分别是７２ ．６ ｃｍ２ 和８８ ．６ ｃｍ２ ．经检验，差异均极显著（ｐ ＜ ０ ．０１） ；对牛肉的一般化学成分分析结果表明，延边黄牛与利延Ｆ１ 牛之间差异不显著（ｐ＞ ０ ．０５） ．更多还原

【Abstract】 During 85 days fallen experiment,the result shows,the body length、withers height、chest width、chest depth、chest girth、trurl width of Liyan F 1 are higher than Yanbian cattle,the thurl width is significant (P<0.01).Daily gain of Yanbian cattle and Liyan F 1 is 0.89 kg、1.06 kg,LIyan F 1 is higher than Yanbian cattle 19.1%,the difference is significant; the digest experiment shows,the digestibility of crude protein,crude fat,neutral washing fiber,acid washing fiber is not significant between Yanbian cattle and Liyan F 1 (P>0.05);The dressing experiment shows,dressing percentage of Yanbian cattle and Liyan F 1 is 51.6%、54.4%,neat weight is 39.2%、 43.9%, neat-bone ratio is 3.15、4.18,eye muscle area is 72.6 cm 2、88.6 cm 2,the difference are all significant (P<0.01).Analysis of normal chemical compositon shows,the difference between Yanbian cattle and Liyan F 1 is not significant (P>0.05).更多还原