1. Department of Agriculture , Alex Ekwueme Federal University Ndufu Alike-Ikwo , Ebonyi State , Nigeria .
2. Department of Veterinary Physiology and Pharmacology , Michael Okpara University of Agriculture Umudike , Abia State , Nigeria .
3. Department of Veterinary Physiology and Pharmacology , University of Nigeria , Nsukka , Enugu State , Nigeria .