Can Tryptophan Deficiency Cause Aggression — Yes, it could.
It’s been said that does who eat long term beef, or perhaps other red meat diets with no variety — could be deficient in tryptophan, and begin displaying signs of aggression.
Good news is we can get tryptophan in Fish, Eggs and Cheese (ie Cottage Cheese for Your Dog)
So even if a beef based diet for the most part, adding in variety of Turkey, Fish, Eggs or Cottage Cheese should help you sustain balanced nutrients!
Vary Your Protein from time to time.
Should your competition performance sport dog eat Turkey everyday – probably not. Especially if you start noticing that your high energy breed would rather be on the couch.