Sadly, there isn't breed by breed research available. We can tell you a lot about the research on production layers, and we can tell you a lot about Cx aka "frankenchickens" or "supermarket birds", but can tell you much less about every chicken in between, except by inference.. Wish it were...
Flock Party Eggmaker is pricey. Its a Layer Formulation, albeit one with better Methionine and Lysine levels than some. That said, it is a LAYER formulation, providing calcium level intended for peak production layers. That amount of calcium is NOT good long term for hatchlings, adolescents...