1. College of Animal Science and Technology
2. Yangzhou University
3. Yangzhou
4. P.R. China
5. Department of Animal Sciences and Division of Nutritional Sciences
6. Agricultural and Animal Production Department
7. UAM-Xochimilco
8. Mexico City
9. Mexico 04960
10. University of Illinois
11. Urbana 61801
12. USA
13. College of Veterinary Medicine
14. Evonik Nutrition & Care GmbH
15. Hanau-Wolfgang
16. Germany
17. Animal Science Department
18. Universitàt Politècnica de Valencia
19. 46022 Valencia
20. Spain