Study on Milk Production Dynamics and Major Chemical Milk Components in Brown Sire Dams of Brown Swiss-Type from the Research and Development Station for Bovine Raising - Arad

Florin Cristian Neciu, Ludovic Toma Cziszter, Radu Ionel Neamţ, Daniela Elena Ilie, Florin Corneliu Marinescu

Abstract


The present work was carried out to determine the influence of lactation rank on the milk yield, fat and protein evolution. Observations were carried out on 117 lactations, as follows: 15 first lactations, 22 second lactations, 26 third lactations, 28 fourth and 26 fifth lactations. It was found out that the average milk yield was 7511.66 kg with the maximum in the fifth lactation (7898.19 kg) and the minimum of 7117.06 kg in first lactation. The differences were highly significant until the third lactation. After the fourth lactation the differences between lactations become statistically no significant, as productive maturity is reached. Milk fat percentage reaches the maximum value in the fifth lactation (4%) with a minimum value recorded in the fourth lactation (3.83%). The average milk fat percentage was 3.94%. Significant and very significant differences occurred for the milk fat percentage between the first three lactations and the fourth and fifth lactations. Milk protein percentage has averaged 3.2%. This parameter is less influenced by lactation rank.


Keywords


Brown Swiss; fat percentage; lactation rank; milk yield; protein percentage; sire dam

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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
Phone: +40-256-277160, Fax.: +40-256-277110