| Journal: | Anais da Academia Brasileira de Ciencias |
| Database: | PERIÓDICA |
| System number: | 000417692 |
| ISSN: | 0001-3765 |
| Authors: | Oliveira, Sheilan N. de1 Ribeiro, Ricardo P2 Oliveira, Carlos A.L. de2 Alexandre-Filho, Luiz2 Oliveira, Aline M.S2 Lopera-Barrero, Nelson M3 Santander, Victor F.A4 Santana, Renan A.C2 |
| Institutions: | 1Universidade Federal da Grande Dourados, Faculdade de Ciencias Agrarias, Dourados, Mato Grosso do Sul. Brasil 2Universidade Estadual de Maringa, Departamento de Zootecnia, Maringa, Parana. Brasil 3Universidade Estadual de Londrina, Departamento de Zootecnia, Londrina, Parana. Brasil 4Universidade Estadual do Oeste do Parana, Departamento de Informatica, Cascavel, Parana. Brasil |
| Year: | 2017 |
| Season: | Dic |
| Volumen: | 89 |
| Number: | 4 |
| Pages: | 2931-2944 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English abstract | In this paper, the existence of a genotype x environment interaction for the average daily weight in GIFT Nile tilapia (Oreochromis niloticus) in different regions in the state of Paraná (Brazil) was analyzed. The heritability results were high in the uni-characteristic analysis: 0.71, 0.72 and 0.67 for the cities of Palotina (PL), Floriano (FL) and Diamond North (DN), respectively. Genetic correlations estimated in bivariate analyzes were weak with values between 0.12 for PL-FL, 0.06 for PL and 0.23 for DN-FL-DN. The Spearman correlation values were low, which indicated a change in ranking in the selection of animals in different environments in the study. There was heterogeneity in the phenotypic variance among the three regions and heterogeneity in the residual variance between PL and DN. The direct genetic gain was greater for the region with a DN value gain of 198.24 g/generation, followed by FL (98.73 g/generation) and finally PL (98.73 g/generation). The indirect genetic gains were lower than 0.37 and greater than 0.02 g/generation. The evidence of the genotype x environment interaction was verified, which indicated the phenotypic heterogeneity of the variances among the three regions, weak genetic correlation and modified rankings in the different environments |
| Disciplines: | Medicina veterinaria y zootecnia |
| Keyword: | Peces, Zootecnia, Cultivo de peces, Epigenética, Ganancia genética, Correlación genética, Heredabilidad, Oreochromis niloticus |
| Keyword: | Fish, Animal husbandry, Fish culture, Epigenetics, Genetic gain, Genetic correlation, Heritability, Oreochromis niloticus |
| Full text: | Texto completo (Ver HTML) |
