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Abstract
1. Length, width and width:length ratio of feathers were measured in two bands of the necks of 109 cocks to estimate repeata‐bilities and correlations between traits. Three Spanish varieties were studied.
2. The normality of the distributions was adequate based on the Shapiro‐Wilk W‐test. The variances of the length:width ratios were not homogeneous but the inverse ratio (width:length) was acceptable.
3. For the width.‐length mean ratio of the two bands, the order of merit for the varieties was Cistierna>Riano>Plateada Vasca.
4. The repeatability estimates ranged from 043 to 0–54, which indicated a moderate degree of variance among animals and between bands of feathers relative to the variation within animals.
5. Correlation coefficients showed a positive relationship between length and width (r=0–45 to 0–72), a negative correlation between length and width:length ratio (r= —0–48 to —0–65) and no association between width and width:length ratio.
Notes
Present address: Department of Animal Sciences, Lilly Hall, Purdue University, West Lafayette, Indiana 47907, USA.