Contributions to the knowledge of chemical composition evolution in colostral milk

Gabriel Raducan

Abstract


The aim of the paper was to evaluate the colostrum quality and changes in composition during the first three days postpartum. Researches were carried out on five Romanian Black and White primiparous cows. Samples of colostrum were collected at calving and at 4-hour interval for three days. Samples were analyzed for the percentage of protein, fat, lactose, dry matter nonfat and dry matter. The protein percentage dropped from 15.9 % at first milking after calving to 4.6 % at 72 hours after calving. Fat percentage also decreased from 8.3 % at first milking after calving to 4.3 % at 72 hours after calving. Lactose concentration in colostrums increased from 1.9 % at first milking after calving to 4.2 % at 72 hours after calving. The dry matter non fat concentration decreased from 19.8 % immediately after calving to 9.9 at 72 hours after calving. Total dry matter in colostral milk decreased from 28.1 % at first milking after calving to 14.2% at 72 hours after calving.


Keywords


colostrum, protein, fat, lactose, dry matter nonfat, dry matter, Romanian Black and White breed

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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

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