Coccidiosis will not leave my flock. - Page 5
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Very well done for sticking at it! So pleased things have looked up.
I was actually going to suggest this. Probiotics work well, I had to treat mine with Corrid due to a silkie that has explosive bloody poop, but she got better after the corrid. I also treated the whole flock, both chicken houses. I currently have two.
I also read somewhere that after corrid it is important to give them probiotics, which is what I did also.