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.

Copyright © Wydawnictwo Akademii Rolniczej we Wroclawiu, ISSN 1505-0297

Dobicki A. , Preś J. , Zachwieja A. , Kwaśnicki R. 2006. SACCHAROMYCES CEREVISIAE PREPARATIONS IN THE FEEDING OF COWS AND THEIR EFFECT ON MILK YIELD AND COMPOSITION AS WELL AS RUMEN MICROORGANISMS, EJPAU 9(4), #48.
Available Online: http://www.ejpau.media.pl/volume9/issue4/abs-48.html

ABSTRACT

The aim of present investigations was to determine the effect of dried yeasts and a preparation isolated from cell membranes of beer yeasts (MOS) on the yield and composition of milk from Polish Holstein-Friesian cows during the first 100 days of lactation (variety Red-and-White), fed according to the PMR system. The development of the rumen microflora was also taken into consideration. The experiment was conducted on 75 Polish Holstein-Friesian cows maintained in tied stalls. The cows calved during the summer season. The experimental design included two experimental and one control group (Table 1). The number of protozoa and bacteria were determined in the rumen fluid of 8 cows selected at random from each group at the end of the experiment (24 animals in total). The addition of dried beer yeast preparations (dried yeasts – 80 g per head per day and extract of yeast cell membranes – 20 g MOS) to the feed of high-producing dairy cows resulted in a statistically significant increase in milk yield in comparison to animals of the control group, (by 3 and 2.2 kg milk per day). A significant (by 34-39%) increase was observed in the number of bacteria in the rumen fluid, what indicates that the feed additives used lead to a more efficient utilisation of fibre from the daily ration, improved the energy balance and the use of nutrients for milk production with a simultaneous decrease of the Somatic Cell Count (SCC). These results confirm that the yeast preparations offered positively stimulated the immunological system.

Key words: cows feeding, milk composition, rumen microorganisms, yeast culture.

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Aleksander Dobicki
Institute of Animal Breeding, Faculty of Biology and Animal Science, Wrocław University of Environmental and Life Science, Poland
Chełmońskiego 38 C, 51-630 Wrocław, Poland

Jerzy Preś
Department of Animal Nutrition and Feed Management, Faculty of Biology and Animal Science, Wrocław University of Environmental and Life Science, Poland
Chełmońskiego 38 C
51-630 Wrocław, Poland
Phone +48 71 32-05-839
fax: +48 71 32-05-845

Andrzej Zachwieja
Institute of Animal Breeding, Faculty of Biology and Animal Science, Wrocław University of Environmental and Life Science, Poland
Chełmońskiego 38 C
51-630 Wrocław, Poland
Phone +48 71 32-05-765
fax: +48 71 32-05-765
email: andrzej.zachwieja@up.wroc.pl

Roman Kwaśnicki
Institute of Animal Breeding,
Wrocław University of Environmental and Life Sciences, Poland
Chełmonskiego 38 C, 51-630 Wrocław, Poland
phone (071) 32-05-770, fax: (071) 32-05-764

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Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.

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