Coryza or MG??? HELP

-chook-

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Hello!
I have two flocks that are in separate coops and runs, about 50-75 feet from each other. One is my 2.5 year old flock, and then I have another flock that is separated. I got them a month and a half ago; They were in quarantine for 30 days because I bought them as pullets from a lady nearby. They have been fine until a couple weeks ago. A couple weeks ago, I moved some birds from the new flock to the original 2.5 year old flock. Within 2-3 days, everyone was sick. There were swollen eyes, bubbly eyes, terrible smell, crackly/raspy breathing. It was bad. I made the decision to cull because I know they remain carriers for life, and I breed/sell. I figured coryza over mg, especially because of the smell.
Flashforward a week after culling, I had a chicken start sneezing in the other coop. I am pretty good at biosecurity, so I did not think they would get sick. I separated her, but she has not presented any other symptoms, other than alot of sneezing. The rest of that flock is a bit sneezy, but not like her. Should I assume coryza? There is no swelling or smell, though, so I worry it is MG. That could be a huge issue for me because I want to sell hatching eggs.

All that being said, after culling, if I clean their coops thoroughly with bleach diluted water, put down new bedding, and wait about a week, will every future chicken remain healthy? A week after my original flock was culled, I replaced them with 5 birds from a trusted friend. They are healthy, and it has been about a week. Should I worry that they could get sick?
So many questions. Tell me everything you know. Thanks
 
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I just dealt with a bout of coryza between two flocks myself and it does sound like it to me. In my experience, a week is nowhere near enough time for it to clear. It has taken probably two months for it to hit every bird in my flocks. The last one to show symptoms is just clearing up now then I think that will be everyone.
 
Also if it is coryza they catch it from sharing food and water from what I understand so you would need to clean all those as well and then just keeping the birds completely separated should work. I’ve dealt with it before with a couple Speckled Sussex I got and although they were carriers for life I would separate them whenever one of them exhibited any symptoms and the rest of my flock never got it, including pullets I raised for my mom.
 
I just dealt with a bout of coryza between two flocks myself and it does sound like it to me. In my experience, a week is nowhere near enough time for it to clear. It has taken probably two months for it to hit every bird in my flocks. The last one to show symptoms is just clearing up now then I think that will be everyone.
For my coop to be clear? I culled the birds. I read that coryza is mostly spread through bird-to-bird contact or through feeders/waterers. I culled, cleaned top to bottom, cleaned feeders and waterers, and waited a week before getting new birds.
I am worried I did not wait long enough.
 
For my coop to be clear? I culled the birds. I read that coryza is mostly spread through bird-to-bird contact or through feeders/waterers. I culled, cleaned top to bottom, cleaned feeders and waterers, and waited a week before getting new birds.
I am worried I did not wait long enough.
I think it should be fine in that case. I haven’t culled any because of it.
 
I think it should be fine in that case. I haven’t culled any because of it.
I culled my entire flock! I cannot risk disease in my flock. I sell birds and hatching eggs.
I have many up and coming chicks about to move from the brooder, though.
 
Both coryza and Mycoplasma gallisepticum only live for about 3 days on equipment and in the environment once all infected poultry are gone. If there are frozen droppings, it might remain a bit longer. Infectious bronchitis can last a week, and ILT may last for months. It is always a good idea to get a sick chicken tested during a necropsy to identify the exact disease, especially since there are at least 8 respiratory diseases, and a few look similar. They can sometimes have a combination of 2 diseases, such as infectious bronchitis and coryza, so keep that in mind. Sometimes wild birds in your environment can be carriers, so your birds could get it from those.
 
Both coryza and Mycoplasma gallisepticum only live for about 3 days on equipment and in the environment once all infected poultry are gone. If there are frozen droppings, it might remain a bit longer. Infectious bronchitis can last a week, and ILT may last for months. It is always a good idea to get a sick chicken tested during a necropsy to identify the exact disease, especially since there are at least 8 respiratory diseases, and a few look similar. They can sometimes have a combination of 2 diseases, such as infectious bronchitis and coryza, so keep that in mind. Sometimes wild birds in your environment can be carriers, so your birds could get it from those.
I plan to schedule an appointment for a necropsy today! Just worried about my current birds I just got and my chicks that are inside the brooder. Hope they don't catch anything.
 

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