Evaluation of the Culling Variate Used by Breeders in Actual Selection

AUTOR(ES)

Yamada, Yukio

RESUMO

The theoretical basis and computational procedures for estimating the culling variate utilized by breeders in actual selection are presented. The essential part of this procedure is to derive the unknown culling variate in terms of a linear combination of traits based on realized indirect selection differentials of those traits and phenotypic variances and covariances among traits in the population. Special emphasis is placed on the distribution of the variables involved. The accuracy of the culling variate is estimated by use of the biserial correlation with some modifications. Numerical illustrations are given for different types of selection.

Documentos Relacionados

• Some Consequences of Selection by Culling When There Is Superiority of Heterozygotes
• Genetic Variance and Correlation after Selection for Two Traits by Index, Independent Culling Levels and Extreme Selection
• The Effect of Litter Culling—or Family Planning—on the Rate of Natural Selection
• Selection for reproductive traits in white egg stock using independent culling levels
• Discrimination of species in the genus Listeria by Fourier transform infrared spectroscopy and canonical variate analysis.