Factors affecting raw milk quality of dairy cows under practical conditions

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F20%3A43918665" target="_blank" >RIV/62156489:43210/20:43918665 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.5219/1336" target="_blank" >https://doi.org/10.5219/1336</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5219/1336" target="_blank" >10.5219/1336</a>

Result language

angličtina

Original language name

Factors affecting raw milk quality of dairy cows under practical conditions

Original language description

Under the practical conditions, it is important to evaluate the factors affecting milk performance. Data from test day yield and milk components should be useful for such evaluation. The aim of the experiment was to study the effect of season, udder health (by somatic cell counts SCC), parity, stage of lactation on milk production, milk components, and SCC under the practical conditions. Also, the frequency of incidence of high SCC during the season was observed. The experiment was realized on one dairy farm in dairy practice. The experiment lasted from December 2015 to October 2017. We examined 481 Holstein dairy cows (6910 milk samples). Milk samples were collected once per month - performed by recording test day. Only cows with 9 - 11 test days were evaluated. The effect of season, parity, stage of lactation, and SCC influenced most of the studied traits. The milk yield was highest at 2nd lactation. In the following lactations, the milk yields were decreasing. The SCC significantly increased with advanced parity. The elevated SCC was found in the beginning and in the final part of lactation. SCC as a factor significantly reduced milk yield, lactose content but increased fat and protein content. In conclusion, under practical conditions, the management should use the data from test days and analyze them for a better understanding of the performance efficiency at the farm level and for implementing more sophisticated decision making in farming.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

40201 - Animal and dairy science; (Animal biotechnology to be 4.4)

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Potravinárstvo

ISSN

1338-0230

e-ISSN

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Volume of the periodical

14

Issue of the periodical within the volume

1

Country of publishing house

SK - SLOVAKIA

Number of pages

6

Pages from-to

744-749

UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85096341122