Yes, they are treat. Their energy (calories) comes from 34% protein and 64% fat. The protein is *more* digestible if cooked. And half the protein is found in the yolk.As far as eggs, that's really just a treat too, right?
They have been used on occasion as a last ditch perk for a failing bird.. a raw yolk (it's easier to get liquids in I think, but their might be other reasons for raw) preferably from your own flock (presuming they aren't nutritionally delinquent)... all the nutrients needed to sustain a new hatched chick for up to 3 days while they are waiting for their mum to take them out of the nest in search of food and water. It's usually also highly palatable and easily digested.
Wetting your standard ration into mash is a great choice if your flock likes it!

These two are not the same IMO though both will meet the needs of the age and species specified on the feeding directions by law... and the Purina Flock Raiser is a superior product with regard to the nutrients I am looking for (protein and amino acids). I spent HOURS at the different feed stores reading different labels for days on end. Boy, that link that Kiki worked so hard on sure can save a ton of time!I use Purina Flock Raisers or Nutrena All Flock.

https://www.backyardchickens.com/threads/feed-comparison-spreadsheet.1275920/
