Article (Scientific journals)
Inferences on the effects of selection for feed conversion over meat quality traits in broiler
De Paiva, José Teodoro; Barreto Mourão, Gerson; Sterman Ferraz, José Bento et al.
2018In Scientia Agricola, 75 (2), p. 129-135
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Keywords :
Bayesian inference; animal breeding; genetic correlation; indirect selection
Abstract :
[en] The intense selection process for economic traits conducted by the poultry breeding programs has been caused several changes in broiler meat quality. A database belonging to a selection program of a broiler male line was used to estimate heritability and genetic correlations for feed conversion ratio and meat quality traits, which were: initial and final pH, lightness, drip loss, thawing loss and shear force. Two-trait analyses were performed and the components of co(variance) and genetic parameters were determined using the Bayesian approach and the GIBBS3F90 software. The heritability estimate found for feed conversion ratio (0.52) showed high influence of direct additive genetic effects on the expression of this trait; therefore, this trait is able to respond to selection. The genetic correlation estimates obtained (-0.50 to 0.33) were indicative of important associations between feed conversion ratio and meat quality traits. The selection to improve feed conversion ratio may cause injury in greater or lesser degree for L*, drip loss (DL), thawing loss (TL) and shear force (SF) in broilers. It is recommended the monitoring of consequences of feed conversion ratio used as selection criteria or meat quality traits in broilers, due to its unfavorable indirect selection for these variables in this population. Breeding methods for efficiency improvements in broilers feed are suggested, which also benefit sensorial and functional properties of the meat.
Disciplines :
Animal production & animal husbandry
Author, co-author :
De Paiva, José Teodoro ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Ingénierie des productions animales et nutrition
Barreto Mourão, Gerson
Sterman Ferraz, José Bento
Chicaroni Mattos, Elisângela
Michelan Filho, Tércio
Machado Campos, Bárbara
Pereira Eler, Joanir
de Genova Gaya, Leila
Language :
English
Title :
Inferences on the effects of selection for feed conversion over meat quality traits in broiler
Publication date :
April 2018
Journal title :
Scientia Agricola
ISSN :
0103-9016
eISSN :
1678-992X
Publisher :
Escola Superior de Agricultura Luiz de Queiroz, São Paulo, Brazil
Volume :
75
Issue :
2
Pages :
129-135
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 10 July 2019

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