FAQ: can food affect tyrosinase activity?
I received this question from several canary breeders. They wonder if you can use specific foods or other vitamins to boost the tyrosinase activity in feathers. (They are trying to breed complete black canaries)
I was not 100% sure about this, so I contacted a few researchers and they all had the same answer: “As far as I know, food does not affect tyrosinase activity”.