Rice, wheat and corn, for example, are missing some of the nine essential amino acids, but grains combined with other foods are major protein sources in many countries. (uen.org)
Economy brands tend to use corn, wheat, gluten, soy and meal as major protein sources, which is not considered to be as healthy for the animal. (petbusiness.com)
Next, the authors determined whether changes in GL impacted the relationship between major protein - rich foods and long - term weight gain. (sciencedaily.com)