<b>Genetic evaluation of weight gain and feed-to-gain ratio of White New Zealand rabbits raised in different environments</b> - DOI: 10.4025/actascianimsci.v32i1.6262

  • Alexandre Leseur Santos UEM
  • Cláudio Scapinello UEM
  • Elias Nunes Martins UEM
  • Fernanda Granzotto UEM
  • Meybi Carneiro Paula UEM
  • André Marubayashi Hidalgo UEM
Keywords: Heritability, weight gain, feed conversion, genetic correlation, bayesian inference

Abstract

This research evaluates whether the selection for feed-to-gain ratio (FGR) and weight gain (WG), based on individual and/or collective performance of rabbits, can lead to genetic gain in collectively-raised rabbit progenies. Animals were submitted to an evaluation period at the age of 50 to 70 days, using Bayesian inference. Six two-trait analyses were done. Performance testing observed WG and FC traits in both environments. Heritability values ranged from 0.42 to 0.60. Both the genetic correlation, 0.44 to 0.68 (WG) and 0.23 to 0.56 (FGR), and the phenotypic correlation, 0.30 (WG) and 0.17 (FGR), were positive when evaluated in the same trait between collective or individual environments; correlations between traits in the same or in different environments were negative, or almost null. It can be concluded that use of performance testing, in individual cages, for WG and FGR, can result in genetic progress when progenies are raised in collective environments, as there is a small re-classification of the breeders from one environment to another.

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Author Biographies

Alexandre Leseur Santos, UEM
Departamento de Zootecnia - Programa de Pós Graduação em Zootecnia - Doutorando Melhoramento Genético Animal
Cláudio Scapinello, UEM
Prof. Dr. UNIVERSIDADE ESTADUAL DE MARINGÁ - Departamento de zootecnia
Elias Nunes Martins, UEM
Prof. Dr. UNIVERSIDADE ESTADUAL DE MARINGÁ - Departamento de zootecnia
Fernanda Granzotto, UEM
Departamento de Zootecnia - Programa de Pós Graduação em Zootecnia - Doutoranda Produção Animal
Meybi Carneiro Paula, UEM
Departamento de Zootecnia - Programa de Pós Graduação em Zootecnia - Pós-Doutoranda Melhoramento Genético Animal
André Marubayashi Hidalgo, UEM
Departamento de Zootecnia
Published
2010-03-22
How to Cite
Santos, A. L., Scapinello, C., Martins, E. N., Granzotto, F., Paula, M. C., & Hidalgo, A. M. (2010). <b>Genetic evaluation of weight gain and feed-to-gain ratio of White New Zealand rabbits raised in different environments</b&gt; - DOI: 10.4025/actascianimsci.v32i1.6262. Acta Scientiarum. Animal Sciences, 32(1), 17-123. https://doi.org/10.4025/actascianimsci.v32i1.6262
Section
Animal Breeding and Reproduction

0.9
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