1. Department of Animal Science, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
2. Department of Animal Resource, University of Salah al-Din, Erbil, Iraq
3. Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Science, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
4. Institute of Bioscience, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
5. Halal Products Research Institute, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
6. Institute of Tropical Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia