Putting other fat in ground elk or deer is like putting Coke-cola in good Jack Daniels.
No added fat makes good spaghetti, meat loaf, chili, anything you use ground meat in. It also negates the healthy food aspect of wild game.
About the only time I would add anything is if I am making breakfast sausage. Summer sausage I only add the spices
When grilling hamburgers using ground elk, only flip the only once and they will hold together
End of recipe.........