Relationships Between Genetic Parameters in the Component Traits of a Ratio Trait and the Distribution and Heritability of Such Ratio Trait

IF 1.7 3区农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE

Animal Science Journal Pub Date : 2025-01-22 DOI:10.1111/asj.70031

Masahiro Satoh

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Abstract

The relationships between the distribution and heritability of a ratio trait and the genetic parameters of its component traits were clarified using a Monte Carlo computer simulation. The component traits of a ratio trait were assumed to be normally distributed. The genetic parameters of the ratio trait were estimated using parent–offspring regression. As the genetic and environmental correlations ( $r_{G}$ and $r_{E}$ ) of the component traits increased, the variance, skewness, and kurtosis of the ratio trait decreased. The amount of decrease had a greater effect on $r_{E}$ than on $r_{G}$ . The estimated heritability of the ratio trait decreased as $r_{G}$ increased and as $r_{E}$ decreased. The estimated heritability of a ratio trait can be higher than the heritability of any of its component traits.

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来源期刊

Animal Science Journal 生物-奶制品与动物科学

CiteScore

3.80

自引率

5.00%

发文量

111

审稿时长

1 months

期刊介绍： Animal Science Journal (a continuation of Animal Science and Technology) is the official journal of the Japanese Society of Animal Science (JSAS) and publishes Original Research Articles (full papers and rapid communications) in English in all fields of animal and poultry science: genetics and breeding, genetic engineering, reproduction, embryo manipulation, nutrition, feeds and feeding, physiology, anatomy, environment and behavior, animal products (milk, meat, eggs and their by-products) and their processing, and livestock economics. Animal Science Journal will invite Review Articles in consultations with Editors. Submission to the Journal is open to those who are interested in animal science.