IM using Kent 23%. I used to feed strictly mazuri 6f but at 23$ per bag and going though 3 bags a week was a waste.
When i switched to Kent, production stayed the same, and the were eating about 25-50lbs less a week depending how over ran i am.
My rats, are popping out litter after litter NON stop of 12-20 consistently. Rat recently 3 weeks ago dropped 32 pinks. if i knew my food was the problem for deaths and non production i would of switched years ago. But my production problem is i get too many males than females.
And about 8 weeks ago i started tossing in whole oats 13% protein and like 2% fat and so on. One hand full every 3 days on cleaning day. This keeps them for eating that for a day rather the kent. This also cut my bill in about 20% using Whole oats.