We buy our feed from local feed store ...it has the exact same ingredients as the Purina layer pellets..I took him the tag from the gg..they make food...they made me up my beet pulp and soybean meal for goats today too...
Layer pellets/crumbles have MORE calcium (that's why it's called Layer) than other feed. Chicks, cockerels & Roos do NOT need that extra calcium ... I've read it may/can cause liver/kidney issues but then again others say not. I agree with @azygous Rather be safe than sorry, haven't had any issues with my girls nor their eggs (FR & OS)