Got the results a while ago, only getting around to sharing them now. The result was unsurprising. Cause of death: salpingitis.
But I learnt a few things:
- The salpingitis was caused by mycoplasma (MG)
- …meaning my entire flock was exposed and has it.
- Recommended prevention is strict biosecurity and disinfection protocols, but no specific measures were shared by the vet as “none of the recommended ones are practical to implement in a small backyard flock” like mine. (I assume: because it would imply culling the entire flock and I cried over just one bird.)
- No genetic susceptibility factors identified.
- Getting certified MG-free chicken was an option, but they’d just get infected by my current flock. The the vet flagged that I was unlikely to eliminate MG from the environment (esp. soil in the run) as MG is very environmentally resistant. New birds would have to be moved into a new coop and run far enough from the original.
- Now that I know what to look for, if another hen shows symptoms, treatment may be effective if given before the infection becomes generalized. (And if I catch one late stage again like Keiko, I will cull sooner next time.)
And just one interest chicken behaviour from the follow-up exam: Keiko was pretty chill at the vet’s, super easy to handle but she made the predator noise as soon as the vet put on gloves. She remembered and had made the connection between the gloves and cloacal exam after just one time.
PS: I’m not going to send in a bird for necropsy again unless I have a
very good reason. From the first exam and treatment to euthanasia and necropsy, the vet bill totalled about CAD 700. The necropsy was only CAD 50, which I expected to be worse, but what I did not expect in the moment was the ~CAD 250 “biological sample” fee for the plane and courier to get her to the lab…