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

ANGELA STOICA, PAULA POŞAN, ELENA SORCA

Abstract


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.


Keywords


correlations; udder; cows

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Scientific Papers Animal Science and Biotechnologies publish open access articles under the terms of the Creative Commons Attribution 4.0 Licence (read full legal code).


LUCRARI STIINTIFICE ZOOTEHNIE SI BIOTEHNOLOGII (SCIENTIFIC PAPERS ANIMAL SCIENCE AND BIOTECHNOLOGIES)

ISSN print 1841 - 9364
ISSN online 2344 - 4576
ISSN-L  1841 - 9364
(former ISSN 1221-5287, E-ISSN 1841-9364)

PUBLISHER: AGROPRINT Timisoara, Romania
PAPER ACCESS: Full text articles available for free
FREQUENCY: Semiannual
PUBLICATION LANGUAGE: English
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Banat´s University of Agricultural Sciences and Veterinary Medicine "King Michael I of Romania" from Timisoara
Faculty of Animal Science and Biotechnologies
300645, Timişoara, Calea Aradului 119, Romania

E-mail: spasb [at] animalsci-tm.ro
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