Effect of enzyme-probiotic preparation “Profort” on rumen microflora and reproductive function of cows

The aim of the study was to evaluate the effect of enzyme-probiotic feed additive “Profort” on rumen microflora and reproductive function of Holstein cows under conditions of year-round uniform feeding. The object of research were high-yielding cows (n = 40) of Holstein breed, kept loose, in conditions of yearround uniform silage-hay-concentrate type of feeding. In total, two groups of lactating cows of 20 heads in each group were formed: control group with feeding of the basic ration (OR) and experimental group OR + enzymeprobiotic feed additive “Profort” 30.0g per head per day daily, for 15 days, three times with a break of 15 days. “Profort” contains a probiotic mixture consisting of two types of bacteria: Enterococcus faecium 1–35 and Bacillus megaterium B-4801. As a result of the research it was found that the use of feed additive to animals of the experimental group contributed to an increase in the content in the rumen microbiome of cellulosolytic bacteria that activate the breakdown of plant feed fiber: Prevotellaceae, Lachnospiraceae, Clostridia UCG-014, Eubacterium, Oscillospiraceae, Hungateiclostridiaceae, Christensenellaceae and Ruminococcaceae, as well as lactate-utilizing bacteria, preventing the decrease in pH of the rumen environment, reproduction and colonization of opportunistic and pathogenic microflora in other organs of the animal body, including the reproductive system. The cows of the experimental group have improved reproductive ability indicators: fertilizability, decreased duration of service period, labor and postpartum complications. The number of calves obtained in the state of physiological maturity (normotrophy) increases.

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