1. Halal Products Research Institute; Serdang Selangor Darul Ehsan Malaysia
2. Department of Animal Science, College of Agriculture; University of Mosul; Mosul Iraq
3. Department of Animal Science, Faculty of Agriculture; Serdang Selangor Darul Ehsan Malaysia
4. Laboratory of Animal Production, Institute of Tropical Agriculture; Universiti Putra Malaysia; UPM Serdang Selangor Darul Ehsan Malaysia
5. Branch of Anatomy and Histology, College of Veterinary Medicine; University of Baghdad; Baghdad Iraq
6. Department of Veterinary Preclinical Sciences, Faculty of Veterinary Medicine
7. Department of Animal Production; University of Ilorin; Ilorin Nigeria