1. University of Hawai’i (November 2017) [link]
  2. Veterinary World (April 2013) [link]
  3. Journal of the Dietitians Association of Australia (August 2007) [link]
  4. Progress in Neuro-Psychopharmacology and Biological Psychiatry (March 2005) [link]
  5. The International Journal of Applied Research in Veterinary Medicine (2001) [link]
  6. Italian Journal of Animal Science (February 2016) [link]
  7. Indigenous Bacteria from the Gut Microbiota Regulate Host Serotonin Biosynthesis (April 2015) [link]
  8. Proceedings of the National Academy of Sciences of the United States of America (June 2018) [link]
  9. Applied Animal Behaviour Science (March 2010) [link]
  10. U.S. Department of Energy; Office of Science (January 2007) [link]
  11. Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, CA, USA (2003) [link]
  12. Animal Feed Science and Technology (June 2016) [link]
  13. Journal of Food Engineering (September 2001) [link]
  14. US National Library of Medicine National Institutes of Health (April 2006) [link]
  15. US National Library of Medicine National Institutes of Health (November 2015) [link]
  16. Journal of Immunology Research (2006) [link]
  17. Analytical and Bioanalytical Chemistry (May 2013) [link]
  18. The Journal of Nutrition (May 2000) [link]
  19. Animal Feed Science and Technology (August 2000) [link]