The yeast culture Saccharomyces cerevisiae (Strain 47) as manipulator of rumen fermentation in postpartal period of dairy cows

Abstract

In the present study, examined was the effect of a yeast culture (Saccharomyces cerevisiae, Strain 47) on rumen fermentation of cows. Animals received a diet consisting of good maize silage with a higher dry matter content (16 kg), 16 kg of clovergrass haylage, 3 kg of meadow hay and 7.5 kg feed mixture. The yeast culture was added to the mixture in the dose 6 g/day and cow. The supplement of yeast culture showed a positive effect on VFA production in comparison with control (1.16±0.013B vs. 0.84±0.063A g/ 100 ml), and lower production of lactic acid. The utilisation of ammonia was higher by cows in treated group (8.68±0.084A mmol/L). The difference in number of protozoa of cows in the control and experimental groups was significant (302.0±12.349A vs. 359.2±1.304B ths /1 ml of rumen fluid).

Keywords

• dairy cows
• yeast culture
• <i>Saccharomyces cerevisiae</i>
• rumen fluid
• dairy feeding
• rumen fermentation