| 鲁西黄牛肉用品系育种目标性状经济权重计算 |
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| 引用本文： | 张清峰,周正奎,许尚忠,李俊雅,高雪,任红艳,陈金宝.鲁西黄牛肉用品系育种目标性状经济权重计算[J].畜牧兽医学报,2007,38(10):1038-1046. |
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| 作者姓名： | 张清峰 周正奎 许尚忠 李俊雅 高雪 任红艳 陈金宝 |
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| 作者单位： | 1. 西北农林科技大学动物科技学院,杨凌712100;中国农业科学院北京畜牧兽医研究所,北京100094
2. 中国农业科学院北京畜牧兽医研究所,北京,100094 |
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| 基金项目： | 国家科技支撑计划重大项目(2006BAD01A10) |
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| 摘 要： | 根据鲁西黄牛肉用品系的育种和生产实际,在基础母牛群体规模固定的二阶开放核心群育种生产体系下,构建了核心群和商品群中犊牛、青年母牛、青年公牛、成年母牛、成年公牛和育肥牛6个群体,包含断奶重、周岁重、成年母牛体重、育肥期日增重、胴体等级、屠宰率、初产年龄、产犊间隔和生产年限9个目标性状的利润函数模型。采用边际预算法计算目标性状的经济值,经贴现指数和遗传标准差校正后估算其经济权重。结果表明,6个群体体系中,每头母牛年利润为-1033.96元;9个目标性状经济值分别为:1.44元/kg,1.49元/kg,-3.02元/kg,1.81元/g,315.45元/级,66.85元/%,-0.54元/d,-4.43元/d,0.09元/d;相对经济权重分别为0.11,0.11,0.14,0.26,0.14,0.12,0.01,0.08,0.03。结果表明,鲁西黄牛从役肉兼用向专门化肉用方向选育,需要加强生长发育性状选择的同时,兼顾胴体性状和繁殖性状。
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| 关 键 词： | 鲁西黄牛 目标性状 利润函数 经济权重 |
| 文章编号： | 0336-6964（2007）10-1038-09 |
| 修稿时间： | 2006-08-04 |
Calculating Economic Weights of Objective Traits for Beef Line of Luxi Cattle |
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| ZHANG Qing-feng,ZHOU Zheng-kui,XU Shang-zhong,LI Jun-ya,GAO Xue,REN Hong-yan,CHEN Jin-bao.Calculating Economic Weights of Objective Traits for Beef Line of Luxi Cattle[J].Acta Veterinaria et Zootechnica Sinica,2007,38(10):1038-1046. |
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| Authors: | ZHANG Qing-feng ZHOU Zheng-kui XU Shang-zhong LI Jun-ya GAO Xue REN Hong-yan CHEN Jin-bao |
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| Abstract: | According to the real breeding and production condition for beef line of Luxi in nucleus and commercial,Profit function were constructed on the basis of two-tie open nucleus system with the fixed herd-size,which consisted of 6 animal groups that were calves,heifer,young bull,cow,bull and fatten cattle,including 9 objective traits which were weaning weights,yearling weights,mature cow weight,fatten daily gain,carcass grade,dressing percentage,age of first calving,calving interval and productive lifetime.The profit was estimated for current system and economic values were derived from profit function by partial budgeting method for 9 objective traits.Discounting genetic coefficients were calculated and economic values were standardized by genetic standard deviation to obtain economic weights and relative economic weights of objective traits.The results show that total profit of 6 animal groups were-1 033.95 yuan,and economic values for 9 objective traits were 1.44 yuan/kg,1.49 yuan/kg,-3.02 yuan/kg,1.81yuan/g,315.45 yuan/class,66.85 yuan /%,-0.54 yuan/d,-4.43 yuan/d,0.09 yuan/d;and these of relative economic weights were 0.11,0.11,0.14,0.26,0.14,0.12,0.01,0.08,0.03,respectively.The results of this study suggest that growth traits should be mainly strengthened to select from beef and labor dur-purpose to special beef direction,and that attention should be give to carcass and reproduction traits simultaneity. |
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| Keywords: | Luxi cattle objective traits profit function economic weights |
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