Campus Units

Animal Science

Document Type

Article

Publication Version

Published Version

Publication Date

2010

Journal or Book Title

Journal of Animal and Feed Sciences

Volume

19

Issue

3

First Page

452

Last Page

459

DOI

10.22358/jafs/66309/2010

Abstract

In a population of Rhode Island White hens heritability of egg formation, clutch characters and traditional selection traits as well as the genetic and phenotypic correlations between them were estimated via multitrait animal model. Over 1300 birds and about 4000 birds were recorded in two consecutive generations for oviposition time and traditional traits, respectively. The heritability estimates obtained for classical selection criteria: age at first egg (h2=0.42), egg weight (h2=0.50) and body weight (h2=0.42) were considerably higher than those for egg production traits: initial egg production (h2=0.22), clutch traits (h2 between 0.11 and 0.23) and oviposition time (h2 between 0.13 and 0.19). Both genetic and phenotypic correlations between clutch traits and traditional selection traits were low, except for initial egg production and maximal clutch length (rg=0.40 and rp=0.38). As expected, negative correlations were registered for number of clutches and average clutch length. It indicates an opportunity of selection aimed at improvement of egg production persistence by an increase in the average clutch size. Oviposition time was favourably correlated with traditional selection criteria.

Comments

This article is published as Wolc, A., M. Bednarczyk, M. Lisowski, and T. Szwaczkowski. "Genetic relationships among time of egg formation, clutch traits and traditional selection traits in laying hens." Journal of Animal and Feed Sciences 19, no. 3 (2010). doi: 10.22358/jafs/66309/2010.

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

Copyright Owner

Journal of Animal and Feed Sciences

Language

en

File Format

application/pdf

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