aFaculty of Veterinary Medicine, Universiti Putra Malaysia, Serdang, Selangor, Malaysia bInstitute of Bioscience, Universiti Putra Malaysia, Serdang, Selangor, Malaysia cFaculty of Plantation and Agrotechnology, Universiti Technology Mara (Melaka), Jasin Campus, Merlimau, Melaka, Malaysia