The aim of the project was to observe the influence of a high dose of BioPlus 2B on selected parameters and mean weight gain of suckling piglets. The body weight of piglets was controlled and blood samples were taken on days 0, 7, 14, 21, 28 and 35 of the experiment. The red blood cells (RBC) increased gradually in both groups and at the end of the experiment, the number of erythrocytes in the experimental group was significantly higher (P < 0.05) compared with the control group. The level of urea in the control piglets began increasing from the fourth week of life. At the fifth, sampling the urea level in the control group was considerably higher and the difference between groups was significant (P < 0.05). By the week five the mean weight gains differed significantly between the groups (P < 0.05). The final mean weight of experimental piglets was 10.6 kg and the control piglets 9.9 kg.
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