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.: Home > Animal Science Papers and Reports > 2012 > Volume 30 Number 3 > Barbara Kowalik*, Jacek Skomiał, Janusz J. Pająk, Marcin Taciak, Małgorzata Majewska, Grzegorz Bełżecki

Population of ciliates, rumen fermentation indicators and biochemical parameters of blood serum in heifers fed diets supplemented with yeast (S accharomyces cerevisiae ) preparation

Barbara Kowalik*, Jacek Skomiał, Janusz J. Pająk, Marcin Taciak, Małgorzata Majewska, Grzegorz Bełżecki
The Kielanowski Institute of Animal Physiology and Nutrition of the Polish Academy of Sciences, 05-110 Jabłonna, Poland
Abstract :
Evaluated was the influence of live cells and metabolites of yeast (
Saccharomyces cerevisiae)
in the
diet on number of ciliates, concentration of volatile fatty acids (VFA) in the rumen and biochemical
parameters of blood of heifers. The experiment was carried out on three rumen-fistulated heifers.
The animals were fed diet consisting of 88% meadow hay and 12% concentrate. A dose of 10 g of live
yeast or their metabolites – 60 g, were introduced into the rumen. The preliminary feeding period of
animals lasted three weeks and was followed by sampling of rumen fluid (RF), rumen contents (RC)
and blood. The number of protozoa in RC and concentration of VFA in RF as well as total protein,
triacylglycerol, total cholesterol, HDL (high density lipoprotein), LDL (low density lipoprotein)
and VLDL (very low density lipoprotein) in blood serum were determined. Supplementation with
metabolites of yeast significantly increased the number of genus
Entodinium
compared to animals
fed control diet or live cell of yeast. The number of representatives of the genus
Diplodinium
was
similar in heifers fed control diet or metabolites of yeasts and was significantly higher than when the
live yeast was applied to the diet. The number of ciliates from genus
Ophryoscolex
and
Dasitricha
significantly increased, when heifers were fed diet supplemented with live cells of yeast. Addition
of fungal preparations to the diets increased RF pH compared to animals fed control diet. The
administration of yeast metabolites to heifers increased molar concentration of acetate and acetate
to propionate ratio, but decreased molar proportions of propionate and butyrate. The total protein,
triacylglycerol and total cholesterol concentrations decreased significantly when live yeast cells
were added comparing to animals fed control diet or metabolites of yeast.
Keywords :
ciliates / blood /heifers / lipids / VFA/ rumen / yeast

Date Deposited : 01 Apr 2015 15:59

Last Modified : 01 Apr 2015 15:59

Official URL: http://www.ighz.edu.pl/?p0=5&p1=34&o=7497

Volume 30, Number 3, - 2012

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