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Well, I injected penicillin in all of my hens, and I got my Corid this afternoon and it's now in the water. I lost one more this afternoon, and one is in my bathtub right now, she will probably not make it through the night.
Hopefully that will be the last of the deaths.
I have learned a LOT about coccidiosis - most importantly that "medicated chick feed" does NOT help the birds gain immunity to cocci unless they are EXPOSED to cocci while they are on the stuff!!! My coop/run was "too clean" for them, they switched from medicated feed with coccidiostat to layer pellets without ever being exposed to any significant amount of cocci so they never developed immunity. At least that's what I believe based on multiple conversations with the U of FL vet and my flock history. The coop was built on dirt that was brought in to our property - we needed to raise the level so if it rained it was not underwater. So the dirt had never had other birds or chickens pooping on it, it had been freshly dug out of a quarry. Then our birds went on it as young pullets while on medicated feed, but there were no cocci to cycle through their systems so they could develop immunity.
No immunity means sudden and severe onset with exposure...
I've lost 3 now, and another one about to die - I hope someone can use this information to help keep from having the same thing happen to them.

I have learned a LOT about coccidiosis - most importantly that "medicated chick feed" does NOT help the birds gain immunity to cocci unless they are EXPOSED to cocci while they are on the stuff!!! My coop/run was "too clean" for them, they switched from medicated feed with coccidiostat to layer pellets without ever being exposed to any significant amount of cocci so they never developed immunity. At least that's what I believe based on multiple conversations with the U of FL vet and my flock history. The coop was built on dirt that was brought in to our property - we needed to raise the level so if it rained it was not underwater. So the dirt had never had other birds or chickens pooping on it, it had been freshly dug out of a quarry. Then our birds went on it as young pullets while on medicated feed, but there were no cocci to cycle through their systems so they could develop immunity.


No immunity means sudden and severe onset with exposure...

I've lost 3 now, and another one about to die - I hope someone can use this information to help keep from having the same thing happen to them.