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Detection of quantitative trait loci affecting carcass traits and internal organs on chromosome 3 in an F2 intercross of Japanese quail

Hadi Charati
Department of Animal Science, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, PB 76169-133, Iran
Abstract :
Molecular technologies based on markers indicating differences among individuals at the DNA level
can play an important role in genetic improvement of carcass traits through marker or gene assisted
selection. The purpose of this study was to map quantitative trait
loci
(QTL) of chromosome 3
affecting carcass traits on Japanese quail using microsatellite markers. Two white and wild strains
of Japanese quail were crossed reciprocally and the F
1
generation was created. The F
2
generation
was generated by intercrossing F
1
birds. Phenotypic data including weights of hot and cold carcasses,
carcass parts and internal organs were collected from 422 F
2
birds. The total mapping population
(472 birds) was genotyped for microsatellite markers. QTL analysis was performed using the least
squares regression interval mapping method. Significant QTL were identified for hot and chilled
carcass weights, liver weight, head percentage, uropygial gland percentage, intestine percentage,
ovary weight, uropygial gland weight, pancreas percentage (0-36 cM with an additive effect),
proventriculus percentage, head weight (6-20 cM with a dominance effect), and gizzard percentage

(0 cM with an imprinting effect)

Keywords :
apanese quail / carcass traits / chromosome 3 / internal organs / microsatellite markers / QTL mapping

Date Deposited : 02 Apr 2015 13:52

Last Modified : 02 Apr 2015 13:52

Official URL: http://www.ighz.edu.pl/?p0=5&p1=34

Volume 32, Number 4, - 2014

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