I'm very sorry your dealing with this.
You may want to do some more research on organic treatment for Coccidiosis in poultry. I just don't know enough about alternative treatments to make any suggestions.
It would be best if your boyfriend consulted his Doc about his concerns.
You mention winter will kill the parasite. Coccidia are protozoa, they live in the soil and in chicken poop (in the intestines), they may become dormant in the soil over winter, but cold weather does not kill them. Chickens naturally have Coccidia - this is why chicks in a brooder (even a cardboard box inside your house) can have an overload - warm, wet conditions and chicks consuming their own feces (all chick do this) - they can become overloaded without being outside on ground. It's only when there are too many that it overwhelms the system.
Corid (Amprolium) acts as a Thiamine (B1) blocker - essentially it starves out/prevents the Coccidia from being able to utilize B1 which it needs to grow/reproduce. This reduces the numbers and allows the chicks to build resistance.
I did organic research and I was told that I should do medicine even tho they have never been exposed which I didnt understand.
I dont know if doing the 21 day preventative will stop it from possibly happening again and keep medicating them or if i should do what I researched bout organically medicating them and adding some grass with soil on it to try to build their immune systems. < the baby chicks who habe never been exposed. Theyre only 3 weeks old and theyre brooder is brand new. The have never been mixed.
Also I am thinking they were already sick cause the 1 died in a couple days exactly like these ones did. I think moving them outside intesified it.
So they will and are on the medication tho I think my cockereals immune system pulled through. This will just make sure its out of both of them. Then I will do a week of probiotics then 2 weeks of the I think its .006% preventative. It sucked losing them like this
But I have been very emotional because the exact time im losing my chicks I am losing my grandmother so excuse me if i come off rude.
I am just going through hell atm.
I was told it was okay to eat their eggs and everything on this but found others saying its not okay. Idk what to think on that either.
I hate conflicting shit
Also i read all that about where it lives and blah blah blah. I read the whole article and about the corid. I think it was on their site or someones site that helped me understand what I was giving them and what could of possibly happened.
The chick that died tho was only a week old when it died. I thought it just didnt develop right. I didnt know about coccidiousis. The rest grew fast and were all feathered so I thought lets try the outside. And it was going great then idk what happened.
But I got two champs so far and theyre on medicine and I am proud of them.
I medicated my whole flock outside as well just to make sure nothing happens to them even tho they showed no signs. Its just a precaution. Most are opd enough to not worry but some arent but they are big enough to be with them.