Estimates of heritability coefficients in some sheep populations from the Sheep Breeding Research Station of Palas-Constanţa

Abstract

Heritability is one of the most important genetic parameters found in connection with the decisions that must be taken in the breeding processes. The component of the total variation genetically determined depended on the frequency of the gene and on the development of the substitution effect of the gene. The variation of the gene frequency from one population to another and the changes produced by the action of some factors in the same population affected the component of the genetic variance and the ratio of the variance within the population and, finally, the increase of the heritability coefficient. The determination of heritability was necessary especially if populations are found in the middle of the breeding process having the objective of modifying the genetic structure.