Do you have to vaccinate baby chicks if you feed them medicated feed once they start eating. I’m hatching in an incubator. I am asking about Maerk’s disease.
Medicated feed only *usually * prevents coccidiosis, nothing else.
You can buy the vaccine, it's pricey and comes in 1000 chick doses, and it doesn't actually totally prevent them getting or spreading Mareks, just prevents them from *usually * growing the deadly tumors from the disease.