1. B. Ahmad:
Poultry Research Institute, Rawalpindi, Pakistan
2. A. Rehman:
Animal Nutrition Department, College of Veterinary Science, Lahore, Pakistan
3. M. Rabbani:
Animal Nutrition Department, College of Veterinary Science, Lahore, Pakistan
4. H. Jalil:
Animal Nutrition Department, College of Veterinary Science, Lahore, Pakistan