extreme pasty butt, pls give me suggestions

[raimnel]

I would give ACV (organic with the "mother" on the front label), yogart mixed with her food and some water to make a mash like food this would give her more water. This is what I did for my peeper when it was a week old ish, it was all backed up but not a pasty butt. He's fine now, and still a tiny bit smaller than everyone else.
Also may I add, Their free run? with treats? are you giving grit?? No grit can cause runny poop. Just ideas Hope she is fine.

 

[Coop de Bill]

Hello Joanna and all, Hope your Golden Buff Orpington takes a turn for better! My 3 year old free- range Plymouth Bard Rock is having a very similar issue. For 3 weeks, pasty butt, extended abdomen, lethargic, waddles w/legs spread walking, comb over. Initial suspect was egg binding. She was segregated to warm, dry place, given two sitz soaks. Just came off 6 days of Panmycin. Perked up a bit clucking but still has clear running discharge from extended vent with swollen abdomen. Finger probe found nothing. Starting to appear lethargic again with head down, hunched up after 24 hours. No lice found but not tested for worms, yet. How obvious would worm infection be? Symptoms appear to sound similar. Also, treated drinking water a week for coccidia after finding excessive running droppings but no blood present. Rest of the ½ dozen flock is fine. We keep litter dry and the roost clean. One thing we have had is excessive wet weather since April. Any further suggestions? Thanks.