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Notes:
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The aim of this study was to find external morphological characters that differentiate sexes in the Colillano pouter, an Spanish local breed. To this end, 37 individuals were studied (16 males and 21 females) from the same breeder, of which twenty metric variables were obtained. Significant differences (p<0.05) for most of the variables found, thus confirming a marked sexual dimorphism, with the males being significantly bigger than females. By Principal Component Analysis it was deduced that the variables"live weight" and"height" were the more discriminative ones. Which is to say that whereas before 22 values were needed to characterise each individual, now only 2 were necessary. Size was determined by two variables and explained near 90% of the total variance observed.
El objetivo de este estudio fue hallar los caracteres morfológicos externos que diferencian los sexos en el Palomo
Buchón Colillano, una raza autóctona española. Para este fin fueron estudiados 37 reproductores (16 machos y 21
hembras) de un mismo criador, de los que se obtuvieron veintidós variables métricas. Se encontraron diferencias
significativas (p<0,05) para la mayoría de las variables estudiadas, lo que confirmó un claro dimorfismo sexual, siendo os machos claramente mayores que las hembras. Del análisis de componentes principales fue deducido igualmente que
las variables “peso vivo” y “altura” fueron las más discriminantes, o sea, que donde antes se necesitaban 22 valores para
caracterizar a cada individuo, ahora bastan esas dos, explicando el tamaño casi un 90 % de la varianza total observada. |
