About a week and a half ago, my juvenile Ameracauna - easter egger rooster (11 weeks) was attacked by others in the flock. I don't know what started the attack. His back end was seriously pecked and bleeding from several places. A good bit of his back was plucked too - all his tail feathers were plucked except one. I put him in a separate house and soaked his behind in warm water laced with betadyne and put some A&D ointment on the sores. After a few days of this treatment I started actively washing his behind with betadyne and rinsing with hydrogen peroxide; I stopped the A&D ointment after a few days. Throughout the whole deal, the rooster has had solid poo but continuously dribbled the white poo. I gave him some yogurt mixed with feed and a little vitE - this dried up his dribbling white poo (can't remember the name) for the day but it came back dribbling again after one day. I've done this 3 times and each time it dried him up - only for the wet to return. He was initially really hurt and showing it but has gotten stronger, eats well, perches again. So, I put him back in with the rest of the flock today since his sores are healed. The new tissue is red so I dabbed blue food coloring on those spots so the cannibals wouldn't go after him again but I'm concerned - the rest of the flock is interested in this white poo that has the lower part of his back end wet. What have I missed in resolving this problem? Any help will be appreciated.