There's no relationship between the protein % and Marek's, Mara. 15% is the minimum for layers. I'd bump it up to 16-18%. You should be able to find a higher % at your agricultural merchant. I'll be unavailable through 09/27 here but promise to reply when I return if need be.
Thank you again, Mara. I'll talk to you in a few days if need be.
124622 satisfied customers