Unfortunately, I don't have the money right now -_- But, on the off chance it is bacterial my sister has some Tylan. I gave him some last night and he's perked up and has been trying to stand more and he's had two poops that I've seen today and neither were green.
*crosses fingers* I really hope it's not Marek's and that whatever it is the Tylan is working. He's even begun making a little noise again here and there.
If you are going to treat him with antibiotics, finish the whole course of treatment and give him the correct dosage.(everything I read online lead to Merek's Disease, but her eyes aren't discolored).
What dosage are you giving?
Injectable Tylan50 can be given orally at a dose of .20ml per pound of weight 3 times a day for 5 days. If you can only give him 2 doses, up that to .30ml per pound.