The main focus of AF's scientific development is combating cramp, that is how it differs from other greyhound feeds. the choice of carbohydrate ingredients, the addition of glutamine and other electrolytes is to prevent cramp. Here is a link to a 1 page PDF by AF about preventing cramp in greyhounds and there research - http://greyhoundstar.co.uk/wp-content/uploads/2015/02/08-AUSSIE.pdf