Skip to main content
SLU publication database (SLUpub)

Abstract

1. The main purpose of this study was to estimate genetic correlations between yolk proportion, chick weight and production traits using an animal model. 2. Direct-direct genetic correlations were estimated between yolk proportion and age at first egg (-0.34), body weight at 20 (0.10), 40 (0.58) and 60 (0.52) weeks of age, egg number (0.56), egg mass (0.59), feed intake (0.64) and feed conversion (-0.25). 3. Maternal-direct genetic correlations were estimated between chick weight and age at first egg (0.40), body weight at 20 (0.57), 40 (0.66) and 60 (0.56) weeks of age, egg number (-0.50), egg mass (0.21), feed intake (0.45) and feed conversion (0.17), respectively. 4. In conclusion, the results suggest that selection on a higher yolk proportion would not have any unfavourable effects on egg production. Maternal-direct genetic correlations between chick weight and production traits resembled direct-direct genetic correlations between egg weight and production traits found in other studies.

Published in

British Poultry Science
2003, volume: 44, number: 2, pages: 186-191
Publisher: CARFAX PUBLISHING

SLU Authors

UKÄ Subject classification

Animal and Dairy Science
Veterinary Science

Publication identifier

  • DOI: https://doi.org/10.1080/0007166031000096489

Permanent link to this page (URI)

https://res.slu.se/id/publ/434