1. AOAC. (1930). Official methods of analysis of AOAC International, Method 920.39. Crude Fat (Ether Extract) in Animal Feed. AOAC International.
2. AOAC. (1985a). Official methods of analysis of AOAC International, Method 983.19. Calcium (Ca) in mechanically separated poultry and beef. AOAC International.
3. AOAC. (1985b). Official methods of analysis of AOAC International, Method 995.11. ‘Phosphorus (P) Colorimetric Method in Foods. AOAC International.
4. AOAC. (2000). Official methods of analysis of AOAC International, Method 978.10. ‘Fiber (Crude) in animal feed and pet food. AOAC International.
5. AOAC. (2005). Official methods of analysis of AOAC International, Method 984.13. Protein (Crude) in Animal Feed and Pet Food. AOAC International.