中国肉用西门塔尔牛育种目标性状的选择及其经济权重的测算

doi:10.16431/j.cnki.1671-7236.2016.08.026

Abstract

Abstract:

In order to breed a beef line in Chinese Simmental cattle,this research defined breeding objective traits and selected traits according to real breeding condition of Chinese Simmental beef cattle.Using the balance method to calculate the marginal benefit of each objective trait and getting the corresponding economic weight of breeding objective traits through the standard value of the error corrected marginal benefit of breeding objective traits.The results showed that breeding objective traits mainly included growth traits (including weaning weight,fattening daily gain,18th month weight),carcass traits (including carcass quality,dressing percentage,pure meat percentage) as well as reproductive traits (including age at first calving,calving interval,stay group time).In the current market and production conditions,the marginal benefit of the breeding objective traits were 17.93 yuan/kg,16.2 yuan/kg,7.17 yuan/kg,297.99 yuan/grade,497.82 yuan/%,594.46 yuan/%,-3.62 yuan/d,-26.55 yuan/d and 232.75 yuan/y,respectively,and the ratio of relative economic weights of three kinds of traits was 31.49%:15.86%:52.65%,similar to 2:1:3,and reproductive traits occupied larger economic weight,was better than growth traits and carcass traits.The results indicated that reproductive traits played an important role in the process of breeding in Chinese Simmental beef cattle,and we needed to strengthen the selection of reproductive traits.

Key words: Chinese Simmental beef cattle; breeding goal; economic weights; marginal profits

CLC Number:

S823.9⁺2

XUE Jing-long, ZHU Bo, ZHANG Wen-gang, XIA Jiang-wei, GAO Hui-jiang, LI Jun-ya, ZHANG Guo-liang. Selection of Objective Traits and Estimation of Economic Weights for Chinese Simmental Beef Cattle[J]. , 2016, 43(8): 2120-2127.

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Selection of Objective Traits and Estimation of Economic Weights for Chinese Simmental Beef Cattle

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