Oh, I'm so sorry for your loss! That's just heartbreaking!!
I had what sounds like the exact same issue with one of my EE chicks. Long story short, after tons of research & talking with some extremely seasons chicken folks on BYC, I decided to treat him with Sulmet (it seemed like he must have Cocci). That seemed to perk him up a bit for a few days, then he went right back to being extremely lethargic. I then treated with Terramycin, and there was no change whatsoever. I took these pictures while he was at the height of his illness - you can see how he just stood there with his eyes closed:
Then, more research and more e-mail exchanges with experienced chicken folks, and I decided to put him through a round of Tylan. It's a very strong antibiotic. It cured him! In the pics, he's 5-6 weeks old; he is now 13 weeks, and I haven't had any further issues with him. He's turning out to be quite a handsome young fellow, too!
I'm NOT a big believer in treating with antibiotics unless absolutely necessary, but I did find that Tylan really did the trick for me.
I had what sounds like the exact same issue with one of my EE chicks. Long story short, after tons of research & talking with some extremely seasons chicken folks on BYC, I decided to treat him with Sulmet (it seemed like he must have Cocci). That seemed to perk him up a bit for a few days, then he went right back to being extremely lethargic. I then treated with Terramycin, and there was no change whatsoever. I took these pictures while he was at the height of his illness - you can see how he just stood there with his eyes closed:


Then, more research and more e-mail exchanges with experienced chicken folks, and I decided to put him through a round of Tylan. It's a very strong antibiotic. It cured him! In the pics, he's 5-6 weeks old; he is now 13 weeks, and I haven't had any further issues with him. He's turning out to be quite a handsome young fellow, too!
I'm NOT a big believer in treating with antibiotics unless absolutely necessary, but I did find that Tylan really did the trick for me.