The use of statistical procedures for comparison of the production of eggs considering different treatments and lines of quails

The use of statistical procedures for comparison of the production of eggs considering different treatments and lines of quails

Authors

  • Robson Marcelo Rossi UEM
  • Daniela Caetano de Souza Gasparini UFSc

DOI:

https://doi.org/10.5433/1679-0375.2012v33n1p17

Keywords:

Asymmetric, Quails, Bayesian inference, Frequentist inference, Egg production

Abstract

To make inferences concerning a population, parametric methods are traditionally used for sample data analysis assuming that these come from ordinary populations, which not always happens. Most of the times such assumption leads to inadequate conclusions and decisions, especially when the data are distributed asymmetrically. It was aimed on this work to adjust some plausible models for this type of data, aiming to compare eggs productions in quails of different lines through frequentist and Bayesian methods. In the analyzed data it could be verified that the parametric and non-parametric frequentist procedures were, in general, equally conclusive. The Bayesian procedure was the only one which detected difference between the yellow and red lines, regarding the preconized energy diet, and between the blue and yellow for the second eclosion group. By the frequentist methods differences between the blue and red lines were not found; however, given a Poisson distribution for the eggs production, through multiple comparisons between the posterior mean under the Bayesian focus, differences were found between all lines. For being more sensitive, besides flexible, such procedure detected differences not observed by the traditional methods between the yellow and red lines, in the higher energy diet; between the blue and the red one in the second eclosion group and in general. It was concluded that quails of the yellow line showed bigger eggs production, regardless of the eclosion group and diet. Such results raise the discussion on the appropriate use of methods and procedures for statistical data analysis.

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Author Biographies

Robson Marcelo Rossi, UEM

Possui graduação em Matemática pela Universidade Estadual de Maringá (1995), especialização em Estatística pela mesma instituição (1997) e mestrado em Estatística pela Universidade Federal de São Carlos (2001). Doutor em Zootecnia - Área: Produção Animal, sub-área: Melhoramento Genético pela Universidade Estadual de Maringá (2008). Professor TIDE na Universidade Estadual de Maringá desde 2002. Atua principalmente nas áreas de Modelagem Estatística e na Análise de dados com ênfase em Inferência Bayesiana.

Daniela Caetano de Souza Gasparini, UFSc

Bacharel em Estatística pela Universidade Estadual de Maringá. Atualmente, mestranda em Estatística pela Universidade Federal de São Carlos.

Published

2012-04-25

How to Cite

Rossi, R. M., & Gasparini, D. C. de S. (2012). The use of statistical procedures for comparison of the production of eggs considering different treatments and lines of quails. Semina: Ciências Exatas E Tecnológicas, 33(1), 17–26. https://doi.org/10.5433/1679-0375.2012v33n1p17

Issue

Section

Original Article

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