Description: These results were obtained following a large-scale study aimed at establishing the effect of synthetic multienzyme products on the digestion, intermediate metabolism, fattening ability, meat quality and behavior of ruminants (sheep). Six ewes, four-line hybrids of the breeds Tsigai, were used in a six-month study. The animals, weighing between 41 and 49 kg and aged 2.5 yrs, were reared in individual boxes sized 2/2 m in closed barns. The experiment was conducted according to the method of the periods. During the experimental period multienzyme Protozin-A (Zelin-АD, Botevgrad, Bulgaria), was added to the mixture concentrate at dose 1g/kg of mixture. During both periods (Control and Test) the basic behavioral patterns were observed by individual chronometric measurement method within 24 hours. Markers for satisfying biological requirements were feeding, moving activity and rest. There was no negative effect of Protozin-А on the animal behavior. Increased feeding activity and rest and decreased moving activity of the tested animals were found. The following index limits for the functional activities have been recorded: feeding activity - from 0.373 to 0.380, moving activity- from 0.333 to 0.367 and rest - from 0.260 to 0.287