1. Faculty of Agriculture, Department of Animal Science; Universiti Putra Malaysia; 43400 UPM Serdang Selangor Malaysia
2. Department of Animal Production; University of Ilorin; Ilorin PMB 1515 Nigeria
3. Faculty of Food Science and Technology, Department of Food Technology; Universiti Putra Malaysia; 43400 UPM Serdang Selangor Malaysia
4. Department of Animal Resource; University of Salahaddin; Erbil Kurdistan Region Iraq
5. Halal Products Research Institute; Universiti Putra Malaysia; 43400 UPM Serdang Selangor Malaysia
6. Laboratory of Animal Production; Institute of Tropical Agriculture, Universiti Putra Malaysia; 43400 UPM Serdang Selangor Malaysia