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当前位置: 首页 > 文章 > 西门塔尔牛、南德温牛杂交改良秦川牛效果研究 中国牛业科学 2013,39 (6) 11-15
Position: Home > Articles > Improving Effects of Hybrids on Simmental and Qinchuan Cattle,South Devon Cattle and Qinchuan Cattle China Cattle Science 2013,39 (6) 11-15

西门塔尔牛、南德温牛杂交改良秦川牛效果研究

作  者：
昝林森;朱晋生;辛亚平
单  位：
西北农林科技大学动物科技学院
关键词：
秦川牛;西门塔尔牛;南德温牛;杂交改良;回归模型
摘  要：
[目的]为研究西门塔尔牛、南德温牛对秦川牛的杂交改良效果。[方法]对秦川牛、南德温牛与秦川牛杂交一代(南秦F1)、西门塔尔牛与秦川牛杂交一代(西秦F1)共282头母牛的体高、十字部高、体斜长、胸围、腹围、管围等6项体尺指标进行了测定。以体尺指标为基础材料,对比分析了它们的体重与体尺数据在不同月龄的表现特点;计算分析了它们的各项体尺指数;构建了1~2岁秦川牛各项体尺指标对体重的主成分回归模型。[结果]表明:西秦F1比南秦F1的杂交改良效果好,6~24月龄的秦川牛、南秦F1、西秦F1随着月龄的增加,胸围和体重快速增长,西秦F1的各项体尺指标总体上高于南秦F1与秦川牛,秦川牛与南秦F1差异不显著(P>0.05);从育肥指数上来看,24月龄的西秦F1比秦川牛平均高7.2%,差异显著(P<0.05),西秦F1比南秦F1高6.8%,差异显著(P<0.05),南秦F1与秦川牛差异不显著(P>0.05),西秦F1育肥效果优于南秦F1。[结论]对1~2岁秦川牛通过逐步回归得到了估测体重的多元线性回归方程,拟合度较好。
译  名：
Improving Effects of Hybrids on Simmental and Qinchuan Cattle,South Devon Cattle and Qinchuan Cattle
作  者：
ZAN Lin-sen;ZHU Jin-sheng;XIN Ya-ping;College of Animal Science and Technology of Northwest A&F University;National Beef Cattle Improvement Center in China;
关键词：
Qinchuan cattle;;simmental cattle;;south devon cattle;;hybrid improvement;;regression model
摘  要：
【Objective】To study the improving effects of hybrids of Simmental,South Devon cattle on Qinchuan cattle.【Method】Several body sizes,such as body height,body length,heart girth,and body weight were recorded from 282Qinchuan cows.The first generation of South Devon cattle hybridizing Qinchuan cows(NQF1)and the first generation of Simmental hybridizing Qinchuan cows(XQF1)were carried out in Lingtai Prefacture of Gansu province,respectively.Based on these data,their body weight and body size data were comparatively analyzed at the level of the performance characteristics in different age,as well as their body size indexes were also alculated and analyzed.Moreover,regression model was established to predict the body weight of Qinchuan cattle at 1-2years old.【Results】The results showed that hybrid modified effect of XQF1was better than that of NQF1.XQF1's body size was significantly higher than that of NQF1,however,the intercomparison of Qinchuan cattle compared with South Qin F1 demonstrated no significant difference(P>0.05).From the fattening index,at 24months of age,XQF1 is 7.2% higher on average body height than that of Qinchuan cattle,and statistical difference was significant(P<0.05).However,no significant difference(P>0.05)between Qinchuan cattle and NQF1was found.The XQF1cattle showed 6.8% higher than the NQF1cattle(P<0.05).Totally,the point of whole fattening effect of XQF1cattle is better than NQF1cattle.【Conclusion】Through the method of stepwise regression for 1-2years old Qinchuan cattle,the regression equations of multiple linear were obtained and the fitness is better.

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