T. Slavov*, V. Radev, R. Mihaylov, I. Varlyakov Department of Morphology, Physiology and Animal Nutrition, Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria Abstract. A physiological trial was conducted to evaluate the effect of diet supplementation with non-prote

V. Radev*, I. Varlyakov, T. Slavov, R. Mihaylov Abstract. The investigation was carried out with five yearling sheep, Stara Zagora meat type and Pleven Blackhead crosses. The average live body weight of animals at the beginning of the experiment was 55±4 кg. The effect of supplementat