Purina is vegetarian feed, which is probably why less smell with their feces. However, I prefer one with animal protein, which is more natural to a chicken.
That animal protein is probably what make the poo smell worse, if it does...
I don't use either.
I am using Wendlands 151 egg maker 20% protein. They seem to like it fine, eggs are good, chickens are healthy, not too expensive, but not cheap. I haven't really checked the lable, I guess I should, but my chickens get to free range, so I didn't really think to. I buy it at Southland Feed. IMO,
TSC is pricey.
I used Lone Star medicated chick starter and it worked real good too. Bought it at the same feed store.
I won't start on dog food, but, for us, we only feed our 1 dog Wellness brand, and do home cooking for her. The difference since I started that 6-7 years ago is amazing. She's now 12 and in great shape!
PM me if you have a dog that's sickly or having seizures. I have some ideas for you, if you want to stay away from frequent vet visits and bills, and medication that will make your dog a zombie.