VALUES OF SOME PHENOTYPIC, GENOTYPIC AND ENVIRONMENTAL CORRELATIONS BETWEEN MILK QUANTITY AND SOME UDDER CHARACTERISTICS, IN COWS
Keywords:
correlations, udder, cowsAbstract
There were done measurements of mammary gland (body and teats) and there were
calculated some indices and correlation coefficients. The results show that the
phenotypic correlations for milk quantity and udder shape, udder length and for
milking speed and distance between posterior teats and distance between anterior
and posterior teats, were positives. For milk quantity and udder depth and for
milking speed and mammary index the phenotypic correlations were negatives.
Genotypic correlations were generally negatives for milk quantity and udder
characteristics, excepting the udder width correlation which was positive. The
milking speed was negatively correlated with udder shape and positively with
mammary index. Environmental correlations of milk quantity with udder
characteristics were all positive. Environmental correlations of milking speed with
udder shape and distance between posterior teats were positives and negative for
distance between anterior and posterior teats and mammary index.
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