"Zinc proteinate" is a term used to refer to a specific form of zinc, which is a mineral. It means that zinc has been combined with proteins to make it easier for our bodies to absorb and use it. Full definition
Like many dog food brands, the dry dog food and grain - free dog food ingredients include sweet potatoes, chicory root, chicken meal, egg products, and tomato pomace, as well as supplements, such as zinc proteinate, iron proteinate, manganese proteinate, folic acid, vitamin E supplements, and ascorbic acid. (totallygoldens.com)
Chelated minerals (e.g. zinc proteinate, cooper proteinate, manganese proteinate) are attached to an easily absorbable substance. (dogfoodselector.com)
Supplements: Chelated minerals like zinc proteinate and manganese proteinate, are easier to absorb. (dogfoodselector.com)