Interação genótipo-ambiente em rebanhos nelore da Amazônia Legal
Genotype-environment interaction was studied by two different procedures in productive and reproductive traits of Nellore cattle. Data from adjusted weights at 120 (P120), 210 (P210), 450 (P450) days of age, scrotal circumference at 450 days of age (PE450) and age at first calving (IPP) for 211,744...
| Autor principal: | MATOS, Amanda de Sousa |
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| Outros Autores: | SENA, Josynélia do Socorro da Silva, MARCONDES, Cíntia Righetti, LÔBO, Raysildo Barbosa, RORATO, Paulo Roberto Nogara, CUCCO, Diego de Córdova, ARAÚJO, Ronyere Olegário de, BEZERRA, Luiz Antonio Framartino |
| Grau: | Artigo |
| Idioma: | por |
| Publicado em: |
Universidade Federal do Pará
2018
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| Acesso em linha: |
http://repositorio.ufpa.br/jspui/handle/2011/9961 http://dx.doi.org/10.1590/S1519-99402013000300008 |
| Resumo: |
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Genotype-environment interaction was studied by two different procedures in productive and reproductive traits of Nellore cattle. Data from adjusted weights at 120 (P120), 210 (P210), 450 (P450) days of age, scrotal circumference at 450 days of age (PE450) and age at first calving (IPP) for 211,744 records from Nellore herds located in the Legal Amazon region were used in the analysis. The effect of genotypeenvironment interaction was studied through heritability estimates and rank correlation, comparing the Legal Amazon animals with the general basis of animals – PMGRN Nellore Brazil. Bi-trait analyses considered P120 as anchor-trait with P210, P450 and PE450 as another one. IPP has been analyzed separately in single-trait analysis and considering GCIPP as fixed and additive and residual effects as random. Estimates of heritability for P120, P210, P450, PE450 and IPP on the data of the Legal Amazon were: 0.20 to 0.49; 0.21; 0.48; 0.45; and 0.21, respectively, and in general data of PMGRN – Nellore Brazil were: 0.23; 0.25; 0.34; 0.43 and 0.11, respectively. Correlations between rank for P120, P210, P450, PE450 and IPP were equal to 0.77; 0.79; 0.82; 0.78 and 0.38, respectively. The analysis of the genotypeenvironment interaction, through the heritability estimates, showed larger effects on maternal, weight at 450 days of age and age at first calving, whereas the rank correlations showed strong evidence in almost all traits studied. |