K. Kuti1, I.M. Hussaini1*, A. Usman2, A. Isa1 1Department of Microbiology, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Nigeria 2Department of Microbiology, Faculty of Science, Kaduna State University, Kaduna, Nigeria (Manuscript received 24 December 2020; accepted for pu

Lukanov1*, I. Pavlova2, A. Genchev1   1Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria 2Faculty of Veterinary Medicine, Trakia University, 6000 Stara Zagora, Bulgaria (Manuscript received 6 December 2017; accepted for publication 24 January 2018)   Abstract