Abstract
In this paper, we studied the effect of a probiotic, based on the Enterococcus Faeci-um L-3 strain on 20 black-motley calves. The effect of the drug on their biochemical parameters of blood serum were studied. The authors found that this drug, which was fed to calves up to 45 days of age, had a positive effect on the biochemical parameters of blood and on the total animal organism.. So, at 14 days of age, blood serum parame-ters in calves, not receiving the drug, such as: bilirubin, alkaline phosphatase, alanine aminotransferase and aspartate aminotrans-ferase levels were significantly higher than in calves that received probiotic, which indi-cates possible dystrophic changes in the liv-er. Also, at 14 days of age in cows, reciev-ing the drug , the blood serum amylase level was significantly higher than of the calves, not receiving the drug. By the age of 30 days, the tendency to a higher content of bilirubin, alkaline phosphatase, alanine ami-notransferase and aspartate aminotransferase in the blood serum, persisted in the calves of the control group, compared with the ani-mals of the experimental group. By the age of 45 days, the levels of bilirubin, alanine aminotransferase and alkaline phosphatase were also significantly higher in control group of animals, than in experimental group and were 5.0 ± 0.56 μmol / L and 3.72 ± 0.4 μmol / L , 30.66 ± 2.9 IU / L and 16.52 ± 1.2 IU / L, 345.7 ± 30.7 and 226.6 ± 24.1, respectively.The results obtained, indicated that regular feeding of a probiotic based on Enterococcus Faecium L-3 to calves of the milky period, contributes to the normaliza-tion of biochemical parameters and greater resistance to gastrointestinal disorders.
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