VALUES OF SOME PHENOTYPIC, GENOTYPIC AND ENVIRONMENTAL CORRELATIONS BETWEEN MILK QUANTITY AND SOME UDDER CHARACTERISTICS, IN COWS

• Main Authors: ANGELA STOICA, PAULA POŞAN, ELENA SORCA
• Format: Article
• Language: English
• Published: Agroprint Timisoara 2009-10-01
• Series: Scientific Papers Animal Science and Biotechnologies
• Subjects: correlations; udder; cows
• Online Access: http://spasb.ro/index.php/spasb/article/view/1100

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.