For the LONGEST time I was feeding my chickens Nutrena Hen Scratch with oyster shells added in whenever it was necessary. A lady told me that I should be feeding them Nutrena Laying Pellets instead because there's 16% protein in it instead of the scratch, which has 8%. I bought a 50lb bag of the pellets and I'm going to try it. I heard with more protein it will increase their egg production, production in general, give them a longer lifespan and it's better for them. I haven't tried feeding it to them yet, but the lady warned me they might not like it at first. She had also said that with the Hen Scratch chickens will have a shorter lifespan, and in the future they could get liver damage. I like the Nutrena brand and do not plan on changing their brand of feed, so they'll have to learn to like it.