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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Quantitative trait loci for meat yield and muscle distribution in a broiler layer cross
Livestock Production Science, Volume 87, No. 2-3, Year 2004
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Description
An F2 cross of male and female chickens from broiler and layer lines was used to detect and map quantitative trait loci (QTL) affecting muscle yields and the relative weights of different muscles. Phenotypic data from 442 individuals in 30 families were analysed by within-family regression analyses using 102 microsatellite markers in 27 linkage groups with genome-wide significance thresholds. Interactions of the QTL with sex or family were unimportant and, for each trait, there was no evidence for imprinting or of multiple QTL on any chromosome. There were 30 significant QTL on 12 chromosomes (chromosomes 1 to 9, 13, 27 and Z) for 11 traits. Significant dominance effects were detected for 10 of the QTL and several were of relatively large effect. The magnitude of each QTL accounted for 3.2-5.7% of the residual phenotypic variation and the additive effects for 0.2-0.8 phenotypic standard deviations (S.D.). The results suggest that there are QTL affecting relative yield of carcass parts and of breast muscle in particular. © 2003 Elsevier B.V. All rights reserved.
Authors & Co-Authors
Ikeobi, Christian Obiora Ndubuisi
United Kingdom, Midlothian
University of Edinburgh, Roslin Institute
Nigeria, Abeokuta
Federal University of Agriculture, Abeokuta
Kenya, Nairobi
International Livestock Research Institute Nairobi
Woolliams, J. A.
United Kingdom, Midlothian
University of Edinburgh, Roslin Institute
Morrice, David R.
United Kingdom, Midlothian
University of Edinburgh, Roslin Institute
Law, Andrew S.
United Kingdom, Midlothian
University of Edinburgh, Roslin Institute
Windsor, Dawn
United Kingdom, Midlothian
University of Edinburgh, Roslin Institute
Burt, David W.
United Kingdom, Midlothian
University of Edinburgh, Roslin Institute
Hocking, Paul Morison
United Kingdom, Midlothian
University of Edinburgh, Roslin Institute
Statistics
Citations: 60
Authors: 7
Affiliations: 3
Identifiers
Doi:
10.1016/j.livprodsci.2003.09.020
ISSN:
03016226
Study Approach
Quantitative
Participants Gender
Male
Female