purina flockraiser

Just switched my almost 6-week old ducklings from a brand nobody's heard of (Keystone Mills) to Purina Flock Raiser (non-medicated) and I was concerned about the protein requirements and requirements for other nutrients. How can I lower the protein level and how can I ensure that my ducklings...

Anyone else have this problem??? Recently (for like the past few months maybe ??? Not really sure), some of the Purina feeds have ZERO dates on them anywhere!! Including the kind I usually buy! Meanwhile, their other feeds have dates as does Nutrena and most of the Dumor ones. The issue seems...