Genetic parameters and morphometric characteristics of two generations from the GIFT strain of the Nile Tilapia

Autores

  • Sheila Nogueira de Oliveira Universidade do Oeste do Paraná
  • Carlos Antonio Lopes de Oliveira Universidade Estadual de Maringá
  • Luis Alexandre Filho Universidade Estadual de Maringá
  • Emiko Kawakami de Resende Empresa Brasileira de Pesquisa Agropecuária, Embrapa Pantanal
  • Nelson Mauricio Lopera Barrero Universidade Estadual de Londrina
  • Natali Miwa Kunita Universidade Estadual de Maringá
  • Victor Francisco Araya Santander Universidade do Oeste do Paraná
  • Ricardo Pereira Ribeiro Universidade Estadual de Maringá

DOI:

https://doi.org/10.5433/1679-0359.2014v35n6p3457

Palavras-chave:

Bayesian inference, Breeding, Fish, Oreochromis niloticus, Selection.

Resumo

The objective of this work was to estimate the (co)variance and the genetic parameters for weight and average daily gain from two national generations of the GIFT strain of the Nile tilapia (Oreochromis niloticus). We evaluated 3918 fish from two generations of the breeding program from the Universidade Estadual de Maringá, Northwestern Paraná. Univariate and bivariate analysis were carried out using Bayesian inference. The estimates of heritability using one-trait models for weight was 0.15, average daily gain was 0.19, fish length was 0.23, fish width was 0.19, standard length was 0.17, fish height was 0.15, and the head length was 0.17. The genetic and phenotypic correlations were above 0.68 and 0.95, respectively. The values of Spearman and Pearson correlations for breeding values of the morphometric traits in relation to average daily gain ranged from 0.58 to 0.98 and from 0.63 to 0.99, respectively. In the second generation (G2), the genetic gain was 2.6%, the effective size of the population was 94, and the inbreeding coefficient was 0.005. In the next generation (G3), these values were 8.1%, 124 and 0.004, respectively. The genetic gains over the generations gradually increased from one generation to another, indicating that the criterion, average daily gain, chosen for feature selection was efficient.

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Biografia do Autor

Sheila Nogueira de Oliveira, Universidade do Oeste do Paraná

Profª Drª, Deptº de Zootecnia, Universidade do Oeste do Paraná, UNIOESTE, Marechal Candido Rondon, PR, Brasil.

Carlos Antonio Lopes de Oliveira, Universidade Estadual de Maringá

Prof. Dr., Deptº de Zootecnia, Universidade Estadual de Maringá, UEM, Maringá, PR, Brasil.

Luis Alexandre Filho, Universidade Estadual de Maringá

Prof. Dr., Deptº de Zootecnia, UEM, Diamante do Norte, PR, Brasil.

Emiko Kawakami de Resende, Empresa Brasileira de Pesquisa Agropecuária, Embrapa Pantanal

Drª Pesquisadora da Empresa Brasileira de Pesquisa Agropecuária, Embrapa Pantanal, Corumba, MS, Brasil.

Nelson Mauricio Lopera Barrero, Universidade Estadual de Londrina

Prof. Dr., Deptº de Zootecnia, Universidade Estadual de Londrina, UEL, Londrina, PR, Brasil.

Natali Miwa Kunita, Universidade Estadual de Maringá

Mestre, Programa de Pós-Graduação em Zootecnia, UEM, Maringá, PR, Brasil.

Victor Francisco Araya Santander, Universidade do Oeste do Paraná

Prof. Ciência da Computação, Centro de Ciências Exatas e Tecnológicas, CCET, UNIOESTE Cascavel, PR. Brasil.

Ricardo Pereira Ribeiro, Universidade Estadual de Maringá

Prof. Dr., Deptº de Zootecnia, UEM, Maringá, PR, Brasil.

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Publicado

2014-12-09

Como Citar

Oliveira, S. N. de, Oliveira, C. A. L. de, Alexandre Filho, L., Resende, E. K. de, Lopera Barrero, N. M., Kunita, N. M., Santander, V. F. A., & Ribeiro, R. P. (2014). Genetic parameters and morphometric characteristics of two generations from the GIFT strain of the Nile Tilapia. Semina: Ciências Agrárias, 35(6), 3457–3468. https://doi.org/10.5433/1679-0359.2014v35n6p3457

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