Genomic simulation for the study of data transformation efficiency in the genetic evaluation of cattle in the presence of heterogeneity/Simulacao genomica para estudo da eficiencia da transformacao de dados para avaliacao genetica de bovinos na presenca de heterogeneidade
Efficiency of data transformation strategies is evaluated to correct heterogeneity among cattle in the genetic evaluation of bulls, cows and progenies. Four data structures of bovine weaning weights were simulated: herds with and without heterogeneity for means and variances, and herds with and with...
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Veröffentlicht in: | Acta scientiarum. Animal sciences 2012-01, Vol.34 (1), p.77-81 |
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Format: | Artikel |
Sprache: | eng ; spa |
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Zusammenfassung: | Efficiency of data transformation strategies is evaluated to correct heterogeneity among cattle in the genetic evaluation of bulls, cows and progenies. Four data structures of bovine weaning weights were simulated: herds with and without heterogeneity for means and variances, and herds with and without genetic connectedness. In the genetic evaluations, data were used in the original scale and transformed (Logarithmic, Square root, standardization and ratio by phenotypic standard deviation). The evaluated data transformation strategies were not efficient in eliminating the negative effects of heterogeneity among cattle in the genetic evaluation of bulls, cows and progenies. Keywords: genetic connectedness, rank correlation, Genesys, scale transformation. O objetivo deste estudo foi avaliar a eficiencia de estrategias de transformacao de dados para correcao da heterogeneidade entre rebanhos na avaliacao genetica de touros, vacas e progenies. Quatro estruturas de dados relativos a peso a desmama de bovinos foram simuladas: rebanhos com e sem heterogeneidade para medias e variancias, e rebanhos com e sem conexidade genetica. Nas avaliacoes geneticas, utilizaram-se dados na escala original e transformados (Logaritmica, Raiz quadrada, Padronizacao e Razao pelo desvio-padrao fenotipico). As estrategias de transformacao de dados avaliadas nao foram eficientes para eliminar os efeitos negativos da heterogeneidade entre rebanhos sobre a avaliacao genetica de touros, vacas e progenies. Palavras-chave: conexidade genetica, correlacao de ordem, Genesys, transformacao de escala. |
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ISSN: | 1806-2636 1807-8672 |
DOI: | 10.4025/actascianimsci.v34i1.10664 |