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经济权重
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  economic weight
     The ratio of relevant economic importance of the three type traits is 0.62:0.14:0.24 and approximates 5:1:2. The relevant economic importance of the six traits respectively are 0.24, 0.10, 0.28, 0.14, 0.07, 0.17. in which ,growth capacity and yearling weight in growth and calving interval in reproduction occupy relative larger economic weight.
     6 个目标性状,周岁重、育肥期日增重、生长能力、胴体品质、初产年龄和产犊间隔的相对重要性分别为:0.24, 0.10, 0.28 ,0.14, 0.07, 0.17。 其中生长发育性状的生长能力、周岁重以及繁殖性状的产犊间隔占有相对较大的经济权重
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     independence of the Restricted and Optimized Indexes on Economic Weight
     约束和最宜指数对经济权重的独立性
短句来源
     Economic Weight of Production Traits for Swine with Bio-Economic Model
     用生物经济学方法研究猪生产性状的经济权重
短句来源
     But the restrictedselection index, in terms of breeding science,is a unrestricted selection one, of whichthe economic weight has been changed,whereas the change of the economic weight iscaused by the restricted conditions.
     约束选择指数在育种上改变了经济权重的无约束选择,经济权重的改变是由约束条件引起的。
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     The influence of economic weight to optimal selection was significant, and the optimization was better as the economic weight of D100 increased.
     经济权重对优化选择的影响较明显,随着达100kg日龄赋予的经济权重的增加,优化选择的优势越明显。 优化选择通过两种方式增加总选择反应:1)选择早期减少一部分QTL选择反应;
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  “经济权重”译为未确定词的双语例句
     The ratio of relevant economic importance of the nine objective traits-birth weight,yearling weight,18-month weight,fattening daily gain,growth ability,the age of first calving,calving interval,carcass quality and marbling,is respectively 5%,23%,20%,7%,8%,14%,12%,6% and 5%.
     9个育种单性状为初生重、周岁重、18月龄体重、育肥期日增重、生长能力、初产年龄、产犊间隔、胴体品质和大理石花纹,其相对经济权重分别为5%,23%,20%,7%,8%,14%,12%,6%和5%。
短句来源
     The ratio of relevant economic importance of the three kinds of traits-growth,reproduction and carcass quality is 63%∶26%∶11%.
     结果表明,所确定的育种目标性状为生长发育性状、繁殖性状和胴体性状,其相对经济权重比分别为63%,26%和11%,约为6∶2∶1;
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     When selected with index B,whose heritability was 0.6535,the genetic gain of wood density was very small,but the genetic gain of volume was 5.14%.
     按材积经济权重×10进行选择时,虽然木材密度遗传增益很小,但是材积的遗传增益可达 5.14%,指数遗传力为 0.653 5;
短句来源
     By justi-ifed with the genetic standard deviation,the economic weights equal to 5.85、5.02、-9.46、13.10 and 4.66 RMB, respectively.
     通过遗传标准差的梭正,这些性状的经济权重分别为5.85、5.02、-9.46、13.10及4.66元。 文章还分析了影响边际效益的因素。
短句来源
     And the ratio of relative economic weights of three kinds of traits was 0.55∶0.21∶0.24 after standardization,similar to 2∶1∶1.It also showed completely that growth traits should be mainly strengthened to select for beef purpose direction,and that attention should be given to reproduction and carcass traits simultaneously.
     通过遗传标准差校正,3类性状中生长发育、胴体性状和繁殖性状的经济权重之比为0.55∶0.21∶0.24,近似于2∶1∶1。 说明鲁西黄牛向肉用方向发展过程中,需要加强生长发育性状的选择力度,同时要兼顾胴体性状和繁殖性状的选择。
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  相似匹配句对
     Economic Research
     经济调研
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     Making Economic Globaly
     经济全球化
短句来源
     independence of the Restricted and Optimized Indexes on Economic Weight
     约束和最宜指数对经济权重的独立性
短句来源
     Economic Weight of Production Traits for Swine with Bio-Economic Model
     用生物经济学方法研究猪生产性状的经济权重
短句来源
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  economic weight
It was, however, noticed that depression of genetic gain due to low heritability of a character could be avoided by assigning higher economic weight to that character.
      
With a correlation between line per se performance and GCA of 0.50, ΔG for BS1 is about 5% higher than for BS2, if an economic weight of line per se performance is neglected.
      
With increasing economic weight of line per se performance, relative efficiency of BS2 increased rapidly resulting in a superiority of BS2 over BS1 already for an economic weight for line per se performance larger than 0.1.
      
Considering the importance of an economic seed production, an economic weight larger than 0.1 seems realistic indicating the necessity of separate breeding strategies for seed and pollen parent heterotic groups.
      
Direct value added and economic weight factors in economic analysis of CIM
      
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  economic weights of traits
Plant breeders find the concept of deriving relative economic weights of traits difficult to apply and often replace the optimal index by restricted or desired gains indices.
      


Selection of general measured traits is analyzied in this article.Express formulae for selection response ΔR_i.j=ih_i λ_gijh_j σ_pi=ih_ij σ_piwhere i is intensity of selectionand genetic advance ΔG_i.j=ih_j λ_gij σ_gi=ih_i.j σ_giare unified and simplified by introducing correlative heritability (?)and indirect genetic path coefficient (?) The authors proposed compound character which is a combination ofmultiple metrical traits and give its heritability and its other geneticparameters. On this foundation, the...

Selection of general measured traits is analyzied in this article.Express formulae for selection response ΔR_i.j=ih_i λ_gijh_j σ_pi=ih_ij σ_piwhere i is intensity of selectionand genetic advance ΔG_i.j=ih_j λ_gij σ_gi=ih_i.j σ_giare unified and simplified by introducing correlative heritability (?)and indirect genetic path coefficient (?) The authors proposed compound character which is a combination ofmultiple metrical traits and give its heritability and its other geneticparameters. On this foundation, the canonical correlation between phenot-ypic random vector p_2 (m_2 dimesions) of many selection traits P_2=g_2+e_2and genotypic random vector g_1 (m_1 dimesions, m_1≤m_2) of a few aimtraits P_1=g_1+e_1are studied by using canonical analysis When environmental random vectoris independent of genotypic random vector, in solving the matrix equation (G_(12)P_2~(-1)G_(12) '-λ_2G_1) a=0where G_1、P_2、G_(12) is covariance matrix of g_1、P_2、g_1and P_2 respectively, characteristic roots γ_i~22 and its characteristic vectors a_i and (?)are obtained.Then canonical selection character p_i*=g_i*+e_i* i=1, ..., s

本文首先分析了一般测量性状的选择问题。根据作者提出的两性状间的相关遗传力和间接遗传系数,简化並统一了直接选择和间接选择的选择响应和遗传进展的表达式。接着提出了多个测量性状的复合性状的概念並给出了它的一些遗传参数。在此基础上,利用典范相关分析方法,着重研究了多个供选择的测量性状的表型变量与少数几个目标性状的基因型变量的相关关系,提出了典范选择性状与典范目标性状的概念,它们正是典范相关分析中典范相关系数较大的前几对典范变量。而第Ⅰ报中的典范性状只是这种典范变量对的特例。利用这少数几个典范选择性状对相应的典范目标性状进行间接选择,不仅具有利用典范性状进行选择的特点,而且因目标性状集中,更有利于对多个目标性状的综合选择。本文还讨论了典范选择性状与选择指数的关系。当只有一个目标性状时,它与一般选择指数等价;当有多个目标性状並分别有不同经济权重时,它对于典范目标性状的最大间接遗传系数大于综合选择指数对于复合基因型值的间接遗传系数,因而利用它可提高间接选择的可靠性。最后,本文讨论了典范选择性状在杂交亲本的选配及杂交后代的选择等方面的可能应用。

A path analytical model of comprebensive selection indexes (unrestrict-ed, restricted, and optimum)was established under all the restricted conditions. Thedirect contribution value ai of any traits x_i in the index to CGS_(H(i)) of the aggregate genet-ic economic value H, and the indirect contribution value r_(pij)a_j of x_i to CGS_(H(i)) through x_jcan be obtained with the model.This indicates that the total path information between x_iand H can also be obtained,and the primary selection trait together with...

A path analytical model of comprebensive selection indexes (unrestrict-ed, restricted, and optimum)was established under all the restricted conditions. Thedirect contribution value ai of any traits x_i in the index to CGS_(H(i)) of the aggregate genet-ic economic value H, and the indirect contribution value r_(pij)a_j of x_i to CGS_(H(i)) through x_jcan be obtained with the model.This indicates that the total path information between x_iand H can also be obtained,and the primary selection trait together with the auxiliaryand restricted traits can,therefore, be determined.The stuty shows that a good indexshould be determined both with biological and economic significances. But the restrictedselection index, in terms of breeding science,is a unrestricted selection one, of whichthe economic weight has been changed,whereas the change of the economic weight iscaused by the restricted conditions.

建立了在各种约束条件下的综合选择指数(无约束、约束和最宜3种选择)的通径分析化模型。该模型可以分析出选择指数中任一性状x_i对由它而使聚合遗传经济值H的相关进展CGS_(H(i))的直接贡献a_i和x_i通过x_j对CGS_(H(i))的间接进展,给出x_i与H之间的全部路径信息,以确定主选性状、辅助性状和限制性状。结果表明,好的选择指效应由生物和经济的双重意义来确定。约束选择指数在育种上改变了经济权重的无约束选择,经济权重的改变是由约束条件引起的。

The present paper analyses the relationships of econoinic coefficients of goat traits between various reduced total breeding values (RTBV) and total breeding value(TBV) for hiijing Dekalb Pig. When RTBV includes one trait, the most efficient trait is feed conversion efficiency(FCE) (r= 0. 869 0) ; when RTBV incoudes 2 and 3 trairs, the most efficient combinatlons of goal traits are (FCE+estimated lean meat percentage (ELMP) and (Litter size born alive (LSBL) +Growth rate (GR) +ELMP), respectively.The correlation...

The present paper analyses the relationships of econoinic coefficients of goat traits between various reduced total breeding values (RTBV) and total breeding value(TBV) for hiijing Dekalb Pig. When RTBV includes one trait, the most efficient trait is feed conversion efficiency(FCE) (r= 0. 869 0) ; when RTBV incoudes 2 and 3 trairs, the most efficient combinatlons of goal traits are (FCE+estimated lean meat percentage (ELMP) and (Litter size born alive (LSBL) +Growth rate (GR) +ELMP), respectively.The correlation coafficients between these RTBVs and the TBV are 0. 960 6 and 1. 000 0,respectively.

在估计综合育种中,如果能在多个生产性状中剔除几个性状,进行部分计算,会使综合育种值的计算变得简单。本文研究了北京迪卡猪各种简化综合育种值中目标性状的经济权重及其与完全综合育种值的相关。结果表明,简化综合育种值中只包含一个目标性状时,最好的性状为饲料转化效率,与完全综合育种值的相关(r)等于0.8690;包含2个目标性状时,最佳的的性状组合是饲料转化效率与瘦肉率(r=0.9606);包含3个目标性状时,最好的目标性状组合是南活仔数、日增重及瘦肉率,它已经达到很高的精确度,与完全综合育种值的相关为1.0000。

 
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