The coccidiosis 'vaccine' is actually a small dose of coccidia, designed to help the chicks develop immunity to the actual disease (coccidiosis) that can happen with severe exposure at a young age.
Guessing wildly here; have they been chilled because of a brooder plate malfunction, so the coccidia then was able to take over?
All we can do online is guess; I hope the OP can find out what went wrong!
Mary
Guessing wildly here; have they been chilled because of a brooder plate malfunction, so the coccidia then was able to take over?
All we can do online is guess; I hope the OP can find out what went wrong!
Mary