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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/36179
Title: 
Mapping QTLs on chicken chromosome 1 for performance and carcass traits in a broiler x layer cross
Author(s): 
Institution: 
  • Universidade de São Paulo (USP)
  • Universidade Estadual Paulista (UNESP)
  • Univ Passo Fundo
  • Roslin Inst Edinburgh
ISSN: 
0268-9146
Abstract: 
With the objective of mapping quantitative trait loci (QTLs) for performance and carcass traits, an F-2 chicken population was developed by crossing broiler and layer lines. A total of 2063 F-2 chicks in 21 full-sib families were reared as broilers and slaughtered at 42 days of age. Seventeen performance and carcass traits were measured. Parental (F-0) and F-1 individuals were genotyped with 80 microsatellites from chicken chromosome 1 to select informative markers. Thirty-three informative markers were used for selective genotyping of F-2 individuals with extreme phenotypes for body weight at 42 days of age (BW42). Based on the regions identified by selective genotyping, seven full-sib families (649 F-2 chicks) were genotyped with 26 markers. Quantitative trait loci affecting body weight, feed intake, carcass weight, drums and thighs weight and abdominal fat weight were mapped to regions already identified in other populations. Quantitative trait loci for weights of gizzard, liver, lungs, heart and feet, as well as length of intestine, not previously described in the literature were mapped on chromosome 1. This F-2 population can be used to identify novel QTLs and constitutes a new resource for studies of genes related to growth and carcass traits in poultry.
Issue Date: 
1-Apr-2006
Citation: 
Animal Genetics. Oxford: Blackwell Publishing, v. 37, n. 2, p. 95-100, 2006.
Time Duration: 
95-100
Publisher: 
Blackwell Publishing
Keywords: 
  • abdominal fat
  • carcass
  • growth
  • organs
  • quantitative trait loci
  • selective genotyping
Source: 
http://dx.doi.org/10.1111/j.1365-2052.2005.01387.x
URI: 
Access Rights: 
Acesso restrito
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/36179
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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