Study regarding the influence of parity, age at first calving and farm management on the milk yield and composition in Romanian Black and White cows

Traian Cismaş, Stelian Acatincăi, Ludovic Toma Cziszter, Silvia Erina, Simona Baul, Iulian Tripon, Gabriel Răducan

Abstract


The aim of the paper was to study the effects of parity, age at first calving and farm management on the milk yieldand milk composition in 421 Romanian Black and White cows from the South-eastern Romania. Milk yield, milk fatyield, milk protein yield, and milk lactose yield were studied. Cows were divided into three classes for parity (1, 2,and 3+), five classes for age at first calving (<25, 25-28, 28-31, 31-34, and >34 month), and 2 farms in order to studythe effect of these factors on milk production. Average milk production in farm 1 was 5487.9 kg milk, 200.5 kg fat,189.5 kg protein, and 261.2 kg lactose, while in farm 2 was 6701.4 kg milk, 271.1 kg fat, 234.1 kg protein and 337.8kg lactose. Milk production was significantly different in the two farms. Parity has a significant effect on the milkproduction; only differences between first lactation and third lactation, as well as second lactation and third lactationwere statistically significant. When the age at first calving was lower or equal to 28 months, the milk production wassignificantly lower compared with production obtained from cows that calved at 31 months of age or later. It wasconcluded that the three studied factors had a significant effect on the milk production.

Keywords


age of first calving; cow; farm; milk production; parity; Romanian Black and White

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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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