Continuing saga of the weird stuff. The good news is none of my birds have shown signs of sickness since the Silkie with lead poisoning. Weird things have occurred to individual birds. I chalk it up to my learning curve. This past week I've been confronted with a new mystery.
One of my barnyard pullets came off the roost last week one morning and acted like she had a sore foot. She limped, held it up and then sat down. I thought maybe she stubbed her toes or tweaked a muscle. Didn't think anything more about it until later in the afternoon I noticed she was not improved. Within the next twenty four to thirty six hours she was sitting more than standing. I picked her up and put her in an isolation hospital pen. Observing her behavior and examining her feet, legs, and body condition. By day two she could not support her weight at all. Held her wings out to balance herself as she scooted/creeped around the pen to get water or feed. Her eyes are clear. No outward signs of anything that I can see. She was stressed to be separated from the flock. Normally I would put this chicken down and bury it and forget about it. But my curiosity is preventing culling just yet.
So...Against my better judgment I returned her to the flock. She can get herself around the yard. The rest of the birds leave her alone. She even manages to lay pullet eggs if she gets near a nest. I picked her up a few times and put her in a box. She lays her eggs and manages to get out again. It's been about a week now. She can get herself up for a few steps. She walks on her tippy toes. I tested her feet for neurological damage by seeing if she can grasp my finger when I press it under the pads. She can. A google search of paralysis in chickens is usually about Mareks. I don't believe that this is that. It is presenting more like TD. I'm going to process her and do a necropsy. If it's TD, I will have a hard time identifying it.
This is what I found in my google search. No copyright infringement is intended. I share it here for educational purposes. I am wondering if anyone on this thread has experience with this disorder. It usually is a broiler/meatie bird problem with fast growing birds.
Tibial Dyschondroplasia, TD
A complex condition seen in chickens, turkeys and ducks. It
may be associated with rapid growth and have a nutritional
factor.
Signs
•There are usually no signs unless the condition is severe.
•Swelling and bowing in the region of the knee joints.
•Lameness.
Post-mortem lesions
•Plug of cartilage in proximal end of tibia, distal tibia, and
proximal metatarsus, in decreasing order of frequency.
•Microscopically - a mass of avascular cartilage with
transitional chondrocytes, small ovoid lacunae and more matrix
than normal.
Diagnosis
Gross pathology; mild lesions may require histology to
distinguish from other problems. Lixiscope may identify in vivo
as early as 2 weeks of age. Differentiate from rickets.
Treatment
None.