Effect of errors in the selection of males on the genetic gain using simulation

Revista Brasileira de Zootecnia

Torres, Robledo de Almeida²  Carneiro, Paulo Luiz Souza²  Silva, Martinho de Almeida e³  Torres Filho, Rodolpho de Almeida¹  Lopes, Paulo Sávio²  Euclydes, Ricardo Frederico²  Carneiro, Antônio Policarpo Souza² 

[1] UFV;UENF

关键词: BLUP;    genetic gain;    selection;    simulation     IntroduçãoA seleção é feita com base nos valores fenotípicos dos indivíduos e de seus parentes;    que são coletados no "campo";    geralmente provenientes de programas de melhoramento;   

DOI  :  10.1590/S1516-35981999000200007

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

Simulated populations were used to verify the effect of errors in the selection of males in the estimates of genetic gains along ten generations of selection, using BLUP. Five levels of errors in the selection of males (0, 5, 10, 15 and 20%) and three heritabilites (.10, .30 e .60) were used. Twenty males and 200 females were selected by BLUP. After the selection of 20 males in each generation, 1, 2, 3 and 4 sires were changed by others randomly. The phenotypic values and efficiency of BLUP with errors in relation to the BLUP without errors reduced with the increase in the error level. The decrease of the genetic gains in function of the inclusion of this type of error did not, apparently, present a relationship association with heritability of the trait.

【 授权许可】

CC BY-NC