Genetic correlations between body weight of cocks and production traits in laying hens, and their possible use in breeding schemes

Genetic and phenotypic (co)variances between body weight of cocks (nm = 1,138), BWM, and production traits of hens (nf = 8,844), i.e., egg number (EN), egg weight (EW), feed intake (FI), and body weight (BWF) were estimated by the restricted maximum likelihood method for an animal model. Six multiva...

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Bibliographic Details
Published in:Poultry science 1994-03, Vol.73 (3), p.381-387
Main Author: Hagger, C
Format: Article
Language:English
Subjects:
Animals
Body Weight - genetics
Breeding
Chickens - genetics
COQ
CORRELACION GENETICA
CORRELATION GENETIQUE
COVARIANCE GENETIQUE
COVARIANZA GENETICA
CRITERE DE SELECTION
CRITERIOS DE SELECCION
Eating
Eggs - standards
Female
FEMELLE
FENOTIPOS
GALLOS
HEMBRA
HEREDABILIDAD
HERITABILITE
HUEVOS
INGESTION DE PIENSOS
Male
Multivariate Analysis
OEUF
Oviposition - genetics
PADRE
PERE
PERFORMANCE DE PONTE
PESO
PHENOTYPE
POIDS
POLLO
POULET
PRISE ALIMENTAIRE (ANIMAUX)
RENDIMIENTO EN LA POSTURA
REPONSE A LA SELECTION
REPUESTA A LA SELECCION
Selection, Genetic
Sex Characteristics
SEXE
SEXO
VALEUR GENETIQUE
VALOR GENETICO
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Summary:Genetic and phenotypic (co)variances between body weight of cocks (nm = 1,138), BWM, and production traits of hens (nf = 8,844), i.e., egg number (EN), egg weight (EW), feed intake (FI), and body weight (BWF) were estimated by the restricted maximum likelihood method for an animal model. Six multivariate analyses were carried out to get all desired components. Resulting heritabilities were 0.292,.754,.682,.732, and 0.790 for EN, EW, FI, BWF, and BWM, respectively. Estimated genetic correlations between BWM and EN, EW, FI, and BWF, were -.161,.338,.645, and.841, respectively. The corresponding estimates between BWF and EN, EW, and FI, were -.036,.294, and 0.787, respectively. The additional expected selection response in traits of hens from including BWM into the selection criterion of cocks is given for a particular structure with full- and half-sister information and different correlations between BWM and traits of hens
ISSN:0032-5791
1525-3171
DOI:10.3382/ps.0730381