I had a Silkie girl I think had cocci she was just laying around not active even laying her head down, everyone else jumped up running around in the morning and she just sat there.
I noticed a little blood in some of the stools and I panicked ran into coastal and got some Corid rushed home mixed it and put some in a dropper and kept putting drops on the end of her beak and she would drink the drops I did it till I got a couple dropper full into her. Give her a half hour break and I was back at it. About four hours later she started eating and drinking on her own and walking around. Totally fine the next day. I went ahead and treated everyone for five days.
Hope yours get well so sorry you lost one. I was amazed how fast it worked. I don't know about Sulmet but I have read not to feed the medicated feed while treating. Good luck.

I noticed a little blood in some of the stools and I panicked ran into coastal and got some Corid rushed home mixed it and put some in a dropper and kept putting drops on the end of her beak and she would drink the drops I did it till I got a couple dropper full into her. Give her a half hour break and I was back at it. About four hours later she started eating and drinking on her own and walking around. Totally fine the next day. I went ahead and treated everyone for five days.

Hope yours get well so sorry you lost one. I was amazed how fast it worked. I don't know about Sulmet but I have read not to feed the medicated feed while treating. Good luck.