ORIGINAL PAPER
The effect of pectinolytic yeasts on rumen
microflora
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1
Institute of Animal Physiology, Slovak Academy of Sciences, 040 01 Košice, Czecho-Slovakia
2
Institute of Experimental Veterinary
Medicine,
040 01 Košice, Czecho-Slovakia
Publication date: 1992-06-01
J. Anim. Feed Sci. 1992;1(2):165-170
KEYWORDS
ABSTRACT
The effect of pectinolytic yeast culture Kluyveromyces marxianus CCY 51-1-1 on growth (total
anaerobes, cellulolytic, amylolytic and pectinolytic bacteria) and enzyme activities (cellulase,
amylase, pectinase and urease) of the rumen microflora were investigated. Significant increase of
cellulase and α - amylase activities were found in experiment with 24 hours incubation in vitro in
rumen liquid from calves or rams. Enhanced cellulase, α - amylase, pectinase activities and a decrease
in urease activity were observed after three weeks of addition of yeast cultures to the diet of sheep. No
significant effect on the rumen bacterial counts was observed in either type of the experiments. The
concentration of yeast supplement was stable for eight hours when cultivated in vitro in rumen liquor.
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