Breeding - food trough calculator?

[Gannicus]

Does such a thing exist? What is the current formula for maximizing breeding? I'm trying to figure out a formula I can use to maximize my away time when dinos hit juvenile. My idea would be a formula that I can use to find the break even point where raw meat will fill bellies and minimize spoil amounts so I can fill the other troughs with cooked meat as my back up.