1. Department of Zoology and Entomology, University of the Free State, Private Bag X13, Phuthaditjhaba 9866, South Africa
2. National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Nishi 2-11 Inada, Obihiro 080-8555, Hokkaido, Japan
3. Department of Biochemistry, Medicinal Biochemistry and Toxicology Laboratory, Landmark University, PMB 1001, Ipetu Road, Omu-Aran 251101, Nigeria
4. Section of Anatomy and Pathology, Division of Veterinary Sciences, Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Nishi 2-11 Inada, Obihiro 080-8555, Hokkaido, Japan
5. Laboratory of Sustainable Animal Environmental Systems, Graduate School of Agricultural Sciences, Tohoku University, Sendai 980-8577, Japan