Meat birds 3 wks old getting pasty butt

[wegotchickens2]

Hello all. We have 19 meat birds that are all doing great except they started getting poopie butts this week, all are healthy and no real problems just wondering if they're growing too fast and this has something to do with it?

 

[fried green eggs]

Meatbirds are little eating and poop machines. You need to limited food to 12 hours per day so, they don't grow too fast and develop problems.