QCan you vaccinate growers with Paracox vaccine? I am slowly losing my growers one by one with coccidiosis and don’t know how to stop it. They are on medicated pellets and amprolium in water, but I am still losing them.
Sorry, the short answer is no. Paracox vaccine must be administered between one and nine days of age and is lifelong. What will help for future breeding and rearing is to use an oocide (coccidia egg killer) and completely clean all of the grower areas with that product. You are on a losing battle otherwise as they are re-infecting themselves and other disinfectants are not effective against these very tough and successful oocysts. In any case, all chicks severely infected with coccidiosis are unlikely to grow and thrive, so you may need to cull the whole batch or they may do it for you. Coccidiosis is a horrible and generally fatal disease but can be prevented. I hope you were using medicated feed from dayold to build up immunity, but a strong challenge can overcome medication. Remember that if you do use Paracox in future that you use non-medicated feed and keep the chicks on litter, not wire, this allows the vaccine to circulate to maximum efficiency.