BAYESIAN AND FREQUENTIST APPROACHES IN THREE TRAIT GENETIC ANALYSIS FOR GROWTH AND REPRODUCTION IN NELORE CATTLE

Authors

  • Carina Ubirajara de Faria Universidade Federal de Goías
  • Cláudio de Ulhôa Magnabosco Embrapa Cerrados
  • Lúcia Galvão Albuquerque FCAV/UNESP
  • Arcadio de los Reyes Uniersidade Federal de Goiás
  • Raysildo Barbosa Lôbo Associação Nacional de Criadores e Pesquisadores/ANCP
  • Luiz Antônio Framartino Bezerra FMRP/USP

DOI:

https://doi.org/10.5216/cab.v9i3.964

Abstract

The Bayesian inference has been proposed as an alternative for estimating variance components instead of the frequentist approach. The objective of this study was to estimate the (co)variance components and genetic parameters of growth and reproduction traits in Nelore cattle using three-trait animal model by Restricted Maximum Likelihood and Gibbs Sampling. The data set had 15,173 and 6,911 records of weight (W365) and scrotal circumference (SC365) at 365 days of age, respectively, and 10, 388 records of age at first calving (AFC), from the Nelore Breed Genetic Improvement Program farms. The linear model included the contemporary groups and age-of-dam (with exception for AFC) as fixed effects, and residual and additive direct genetic effects as random. Estimates obtained by Restricted Maximum Likelihood were different from those found by Gibbs Sampling. There were no differences in genetic parameter estimates using the three levels of prior information by Gibbs Sampling. The Bayesian inference has advantages in relation to Frequentist approach due to marginal distributions which offer more information about the parameters.

KEY WORDS: Beef cattle, genetic parameters, three-trait models.

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Author Biographies

Carina Ubirajara de Faria, Universidade Federal de Goías

Professora Adjunto da Universidade Federal de Goiás, Campus de Jataí, Jataí, GO

Cláudio de Ulhôa Magnabosco, Embrapa Cerrados

Pesquisador da Embrapa Cerrados, Bolsista CNPq, Planaltina, DF, Brasil.

Lúcia Galvão Albuquerque, FCAV/UNESP

Professora Adjunto do Departamento de Melhoramento Animal, FCAV/UNESP, Jaboticabal, SP, Brasil.

Arcadio de los Reyes, Uniersidade Federal de Goiás

Professor Titular do Departamento de Produção Animal, EV/UFG, Goiânia, GO, Brasil

Raysildo Barbosa Lôbo, Associação Nacional de Criadores e Pesquisadores/ANCP

Professor Associado do Departamento de Genética da FMRP-USP, Ribeirão Preto, SP, Brasil.

Luiz Antônio Framartino Bezerra, FMRP/USP

Pesquisador do Departamento de Genética da FMRP-USP, Ribeirão Preto, SP, Brasil.

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Published

2008-10-14

How to Cite

FARIA, C. U. de; MAGNABOSCO, C. de U.; ALBUQUERQUE, L. G.; REYES, A. de los; LÔBO, R. B.; BEZERRA, L. A. F. BAYESIAN AND FREQUENTIST APPROACHES IN THREE TRAIT GENETIC ANALYSIS FOR GROWTH AND REPRODUCTION IN NELORE CATTLE. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 9, n. 3, p. 598–607, 2008. DOI: 10.5216/cab.v9i3.964. Disponível em: https://revistas.ufg.br/vet/article/view/964. Acesso em: 22 nov. 2024.

Issue

Vol. 9 No. 3 (2008)

Section

Animal Production

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