Respiratory infection after deworming, series of questions.

[Wyorp Rock]

I am done currently with the bigger birds. I have to do the second deworming on the juvenile ones since I didn't treat them the first time with the fenbendazole.
No one had eye bubbles yesterday or this morning.
I added sugar to the denagard and some are drinking it. I can't find tylosin in stock without a prescription.
I'm also not hearing anymore coughing this morning.

Sounds like an improvement for sure!

 

[Harmoni]

Just wanted to update. We had a bird euthanized and necropsied. She flew into a wall, injured and wing and then declined. The interim report says suspected MG. So it is very likely to be MG. The AG rep said close to 99% of backyard poultry are infected with MG, so I don't think I will be culling the whole flock.
Denegard hasn't seemed to help the one bird that is mildly symptomatic still. Should I consider tylosin powder for the whole flock?

 

[Harmoni]

Necropsy preliminary and interim reports for those interested.

 

[Harmoni]

Final report and now I have another chicken doing this
So likely MG and Mareks

 

[dawg53]

I'm sorry you're having to go through this. I wish you the best.

 

[Harmoni]

I'm sorry you're having to go through this. I wish you the best.

Thanks. I'm going to have to get better at culling on my own. Driving 2 hours to the state lab every time for euthanizing and necropsies is going to get old quick.
The AG rep said that 99% of backyard flocks are MG positive, so she didn't recommend culling, but dang, both MG and Mareks?
I'm wondering where the Mareks came from. I got 3 new 4 week old chicks the beginning of April and of those 3, the one we had euthanized after paralysis and this one with the torticollis is the 2nd one. Should I assume the Mareks came in from them? I'm calling the lab tomorrow to see if they can run a Mareks PCR.

 

[dawg53]

I've never dealt with Marek's nor MG thankfully. I've always practiced strict biosecurity. However, I know more about MG and treatments from reading literature.

I had a moment years ago when I thought I was dealing with MG with two birds in their own coop and pen. It turned out to be mold growing up in a corner inside their coop. Problem solved.

 

[Coop-de-doop]

This also kills parasites that will be in the lungs and airway.

https://en.wikipedia.org/wiki/Gapeworm (Edit:added info to parasite most common, but others are also possible)

Sneezing, heavy breezing and especially wet crackling(like rice krispies in milk) noises point to parasites infecting the airways and lungs.

Often, strong birds will not show symptomes until being dewormed, because when the worms die, they will release toxic products by decomposing.
Then the body tries to get rid of the dead parasites by the only way they can.

For parasites in the digestive tract, that is diarhea.
For airway/lung parasites that will be sneezing, higher production of mucous, causing bubbles, crackling noises when breathing and clogged/bubbly/running nose holes.


Might be a higher chance than MG. If airway problems come up after deworming, the first thought for me is always parasites in there who got killed off by the dewormer.
If the tests show up nothing, most likely there were parasites who died off and cause this.

Keep calm, drink tea and offer the chickens some Good luck

This is old, I know. But my chickens had worms in their poop, so I used Fenbendazole. Now that they’ve had it the 3 days, everyone is crackly coughing and sneezing. Does that just mean they are coughing the dead worms out, and I don’t need to worry?

 

[Wyorp Rock]

This is old, I know. But my chickens had worms in their poop, so I used Fenbendazole. Now that they’ve had it the 3 days, everyone is crackly coughing and sneezing. Does that just mean they are coughing the dead worms out, and I don’t need to worry?

Your thread is found here:
https://www.backyardchickens.com/threads/coughing-and-crackling-after-fenbendazole.1595990/