Classification of coefficients of variation in experiments with commercial layers

AUTOR(ES)

Faria Filho, DE, Dias, AN, Veloso, ALC, Bueno, CFD, Couto, FAP, Matos Júnior, JB, Barreto, KZO, Rodrigues, PA, Carneiro, WA

FONTE

Revista Brasileira de Ciência Avícola

DATA DE PUBLICAÇÃO

2010-12

RESUMO

This study aimed at determining a specific classification of coefficients of variation in experiments with commercial layers. Coefficients of variation were collected from papers published in Brazilian journals between 2000 and 2009 for performance, internal egg quality, and eggshell quality parameters. The coefficients of variation of each parameter were classified as low, intermediate, high, and very high according to the ratio between the median and the pseudo-sigma. It was concluded that the parameters used in experiments with commercial layers have a specific classification of coefficients of variation, and that this must be considered to evaluate experimental accuracy.

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