Orange corn has the potential to improve animal welfare and of course make egg yolks darker. Well maybe. One thing is for sure the professor got a very nice grant. Orange corn meal and flour is double the price of other store shelf corn products.
https://purdue.edu/newsroom/release...poultry-health-and-egg-yolk-pigmentation.html
https://purdue.edu/newsroom/release...poultry-health-and-egg-yolk-pigmentation.html