Table 2 show that body condition of cows from both groups fulfilled the standard at the dry period and calving, however, after calving the body condition of experimental group cows remained 15% higher than that of the control group. An analogous tendency remains during lactation, when cows from the experimental group (fodder with ‘Spirulina platensis’ additives) exhibit better body condition by 8.5-11% than cows from the control group (P < 0.01). At the peak of lactation, the body condition of both groups decreased. The cows of the control group did not even match recommended standards and were inferior by almost 10% compared with the experimental group (Table 2).