| 摘要: |
| 比较了１２月龄的短秦Ｆ1、短秦Ｆ2和秦川牛各４头阉牛的体尺、体重变化及屠宰性能指标，结果表明：导入短角牛可使秦川牛后躯发育不良之缺陷得到纠正，腰角宽增加６６．３７％～６８．５２％（P＜０．０１），髋宽增加８．７５％～１１．５８％（P＜０．０５），体重也明显增加（４．１７％～６．５１％，P＜０．０１）；屠宰率、净肉率、肉骨比、眼肌面积和眼肌重等５项指标分别提高８．６６％～９．０１％（P＜０．０１）、５．２３％～７．６６％（P＜０．０１）、７．２３％～４７．０９％（P＜０．０１）、２７．１４％～２８．７７％（P＜０．０１）和４３．２６％～４８．８８％（P＜０．０５，P＜０．０１），并使其胴体的前、后肢及体躯三部分产肉量占胴体总产肉量的比例得以优化，但肉质组成差异不大。改良效果短秦Ｆ1优于短秦Ｆ2。 |
| 关键词: 秦川牛，短角牛，导血杂交，体尺，体重，屠宰性能 |
| DOI： |
| 分类号:S823.2 |
| 基金项目:国家教委博士点基金资助项目 |
|
| Research on Crossbreeds of Qinchuan Cattle with Shorthorn |
|
Qiu Huai Zan Linsen TangWanshou Zhang Yinghan Chang Zhijie
|
| Abstract: |
| A fatting experiment was carried out to systermatically study the fatting
and meat performance of 12-mouth old Qinchuan cattle and its F1 & F2 crossbreeds by
shorthorn (n=4).The results showed that the crossbreeds of Qinchuan cattle × shorthorn did not reveal hypoplasia in the rear end compared with the Qinchuan cattle.In
comparion with the Qinchuan cattles,their hind width,thurl width,live-weight increased by 66.37%～68.52% (P<0.01),8.75%～11.58% (P<0.05),4.17%～6.51%
(P<0.01),and the killing-out percentage,meat percentage,ratio of meat to bone,eye
muscle area and weight increased by 5.66%～9.01% (P<0.01),5.25%～7.66% (P<0.01),7.23%～47.09% (P<0.01),27.14%～28.77% (P<0.01) and 43.26%～48.88% (P<0.05,P<0.01)respectively.The proportion of meat yield of fore leg,
hind leg and body over general meat yield of carcass was bettered in crossbreeds,but
their meat composition did not have significant difference.So it was concluded that the
F1 crossbreeds of Qinchuan cattle × shorthorn were better than those of F2. |
| Key words: Qinchuan cattle, shorthorn,crossing with other introduced breeds,body measurement,body weight,killing-out performence |
