Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

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Chládek G. , Máchal L. , Hibner A. , Nowakowski P. 2004. THE RELATIONSHIP BETWEEN BLOOD PLASMA CHOLESTEROL AND MILK PRODUCTION PARAMETERS IN CZECH PIED COWS – PRELIMINARY RESULTS, EJPAU 7(2), #02.
Available Online: http://www.ejpau.media.pl/volume7/issue2/animal/abs-02.html

ABSTRACT

Czech Pied dairy cows were observed one day each month for the period of 12 months (12 test days). All the cows were in the first phase of lactation, i.e. up to 100 days after calving. The mean number of lactation was 2.8, the cows were on average 54.8 days after calving and the mean concentration of cholesterol in blood plasma was 3.93 mmolˇdm^-3 (149.4 mgˇ10^-1dm^-3). During the first 100 days of lactation milk yield amounted to 2 581 kg with 3.91% fat, 3.48% protein and 4.85% lactose. Despite high values of correlation obtained within single test day, relations for the entire year between blood plasma cholesterol concentration and milk production parameters did not reveal strong relationships (from –0.013 to +0.259). However, the graphic polynomial expression showed that cholesterol concentration tended to have negative relationship with milk fat or milk lactose content. The relationship between cholesterol and milk yield was mainly negati

Key words: Czech Pied, cows, cholesterol, milk production, milk fat, milk protein.

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