title: Estimating additive and dominance variances for complex traits in pigs combining genomic and pedigree information.
abstract: Knowledge of dominance effects should improve ge-netic evaluations, provide the accurate selection of purebred animals, and enable better breeding strategies, including the exploitation of het-erosis in crossbreeds. In this study, we combined genomic and pedi-gree data to study the relative importance of additive and dominance genetic variation in growth and carcass traits in an F2 pig population. Two GBLUP models were used, a model without a polygenic effect (ADM) and a model with a polygenic effect (ADMP). Additive effects played a greater role in the control of growth and carcass traits than did dominance effects. However, dominance effects were important for all traits, particularly in backfat thickness. The narrow-sense and broad-sense heritability estimates for growth (0.06 to 0.42, and 0.10 to 0.51, respectively) and carcass traits (0.07 to 0.37, and 0.10 to 0.76, respec-tively) exhibited a wide variation. The inclusion of a polygenic effect in the ADMP model changed the broad-sense heritability estimates only for birth weight and weight at 21 days of age.
authors.affiliation: Departamento de Zootecnia, Universidade Federal de Viçosa, Viçosa, MG, Brasil.
authors.forename: E V
authors.initials: EV
authors.lastname: Costa
authors.affiliation: Departamento de Zootecnia, Universidade Federal de Viçosa, Viçosa, MG, Brasil.
authors.forename: D B
authors.initials: DB
authors.lastname: Diniz
authors.affiliation: Departamento de Zootecnia, Universidade Federal de Viçosa, Viçosa, MG, Brasil.
authors.forename: R
authors.initials: R
authors.lastname: Veroneze
authors.affiliation: EMBRAPA Florestas, Colombo, PR, Brasil.
authors.forename: M D V
authors.initials: MD
authors.lastname: Resende
authors.affiliation: Departamento de Estatística, Universidade Federal de Viçosa, Viçosa, MG, Brasil.
authors.forename: C F
authors.initials: CF
authors.lastname: Azevedo
authors.affiliation: Departamento de Zootecnia, Universidade Federal de Viçosa, Viçosa, MG, Brasil.
authors.forename: S E F
authors.initials: SE
authors.lastname: Guimaraes
authors.affiliation: Departamento de Zootecnia, Universidade Federal de Viçosa, Viçosa, MG, Brasil.
authors.forename: F F
authors.initials: FF
authors.lastname: Silva
authors.affiliation: Departamento de Zootecnia, Universidade Federal de Viçosa, Viçosa, MG, Brasil plopes@ufv.br.
authors.forename: P S
authors.initials: PS
authors.lastname: Lopes
mesh_terms: D000818:Animals; D001724:Birth Weight / Q000235:genetics*; D001947:Breeding; D014644:Genetic Variation; D023281:Genomics; D008460:Meat; D020412:Multifactorial Inheritance / Q000235:genetics*; D010375:Pedigree; D013552:Swine / Q000235:genetics* / Q000254:growth & development