F. Mebkhout2, N.A. Khelifi Touhami1*, N. Ouchene1, T. Dahmane3, T.M. Hamdi2,3, O. Kessi4 1Institute of Veterinary Sciences, University Saad Dahlab Blida 1, Street Soumaa, 09000, Blida, Algeria 2HASAQ Laboratory, National Superior Veterinary School, 16000, Algiers, Algeria 3Department

H. Lukanov1*, A. Genchev1, A. Pavlov2, I. Penchev1 1Department Animal Science – monogastric and other animals, Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria 2Department of Pharmacology, Physiology of animals and Physiological chemistry, Faculty of Veteri