UMM Logo

Universitas Muhammadiyah Malang


Free Download Journals Directory


International Journal of Poultry Science

.: Home > International Journal of Poultry Science > 2009 > Volume 8 Number 7 > C. Boschiero1, M.F. Rosلrio2, M.C. Ledur3, R.L.R. Campos2, M. Ambo2, L.L. Coutinho2 and A.S.A.M.T. Moura1

Associations Between Microsatellite Markers and Traits Related to Performance, Carcass and Organs in Chickens

C. Boschiero1, M.F. Rosلrio2, M.C. Ledur3, R.L.R. Campos2, M. Ambo2, L.L. Coutinho2 and A.S.A.M.T. Moura1
1Department of Animal Science, College of Veterinary Medicine and Animal Science, Sمo Paulo State University (UNESP), Botucatu, 18618-000, SP, Brazil 2Animal Biotechnology Laboratory, Department of Animal Science, College of Agriculture “Luiz de Queiroz”, Piracicaba, 13418-900, SP, Brazil 3EMBRAPA Swine and Poultry, Concَrdia, 89700-000, SC, Brazil
Abstract :

Associations between four microsatellite markers on chromosome 11 and five on chromosome
13 with performance, carcass and organs traits were investigated in chickens using a least-squares
approach applied to single-marker analysis. Three hundred and twenty seven F chickens from the EMBRAPA 2 broiler x layer experimental population were evaluated for 16 traits: five related to performance, five to carcass and five to organs, plus the hematocrit. Two significance thresholds were considered: p<0.05 and p<0.0056; the last value resulted from the application of a multiple tests analyses correction. On chromosome 11, six associations (p<0.05) between the genotypes of two markers with four growth related and one carcass trait were found. On chromosome 13, six associations (p<0.05) between marker genotypes and three performance traits, eight associations (p<0.05) between marker genotypes and two carcass traits and eight associations (p<0.05) between marker genotypes and four organs traits were detected. These associations were indications of the presence of quantitative trait loci on these chromosomes, especially on chromosome 13. In this chromosome, the strongest evidence was for body weight at 41 days of age and percentage of carcass because the p-values exceeded the multiple test threshold (p<0.0056), but also for breast percentage and heart weight due to the large number of markers (four) on chromosome 13 associated with each one of these traits. These associations should be further investigated by interval mapping analyses to find QTL positions and to allow the estimation of their effects.

Keywords :
Body weight, broiler, heart weight, poultry, single marker analysis

Date Deposited : 06 Jul 2011 08:54

Last Modified : 06 Jul 2011 08:54

Official URL: http://www.pjbs.org/ijps/ijps.htm

Volume 8, Number 7, - 2009 , ISSN 1682-8356

Download:
Full Text Original
Abstract : pdf doc
Home | Peta Situs | Admissions | Student Research | E-Journal
Universitas Muhammadiyah Malang © 2011
Developed by Infokom UMM
Last Update : 13 December 2016 20:46Kumpulan file jurnal