The Influence of Some Nutritional Factors and of Some Biophysical Parameters on the Ruminal Fluid Infusorians

Abstract

The microflora and the microfauna that inhabit the stomach compartments, develop under conditions of physiological constants closely related, under the control of regulating mechanisms such as: the thermoregulator system, anaerobiosis condition, nutrient substrate, ionic composition, (pH) buffer system. Any change in these constants leads to a decrease or increase of microorganisms. The experiment had in view to study the influence of Yea Sacc1026 yeast on ruminal infusorians, on some biophysical parameters and the correlations between them. In all experimental variants, the protozoa density was higher than in the control sample and the amount of small protozoa, like Entodinium, with over 95% of the total protozoa. It was ascertained that for all experimental variations there are very small fluctuations between viability values and depending on the time of harvest, the medium viability values was close. When yeast was present in the feed ration, the density of protozoa has a moderate influence on the pH of ruminal fluid (R = 0.7056).

Keywords

• rumen
• sheep
• protozoa
• yeast