I dont think I was neurological, I think they were simply struggling to breathe, they’d gasp for air and stretch their necks out, and thrash around like they were choking.
I know it’s common for large poultry producers to give antibiotics, or it was until recently, but that was for the life of the bird and it was found to increase productivity something like 20-30%, but many producers recommend giving it as a supplement for the first two weeks to help give chicks a good start, which always seemed to me like a good idea given that they have a pretty traumatic first day, and they’re messy little things that like to poop in their food.
As I understand it, Infectious Bronchitis is only found in chickens. There is a different "strain" found in Quail.So in my search to find answers I did a lot of reading and it seems likely that they had infectious bronchitis that they probably picked up at the hatchery because according to the Merck vet manual it has an incubation period of 3-5 days, and a mortality rate of 60% or more in chicks. It also said that there are many different strains which don’t affect all species, which would explain my healthy poults. Recommended treatment is increased heat, electrolytes, and antibiotics to control secondary infection, especially E. coli.
The struggling to breath with outstretched neck ("pump handle respiration"?) sounds like ILT (Infectious Laryngotracheitis) ILT is found in chickens and pheasants.
Most respiratory diseases, generally speaking there should have been more symptoms that accompanied the gasping - watery eyes, sneezing, coughing, facial swelling, rales, etc.
I do know there are several strains of IB, but it is not a disease that I would normally associate with a high mortality rate. You have a loss rate of 80% if my math is correct.
It would be a very good idea to contact the hatchery and if you lose another one send it to be tested so you know for sure what you were dealing with.
http://edis.ifas.ufl.edu/ps039
https://www.merckvetmanual.com/poul.../overview-of-infectious-bronchitis-in-poultry
https://www.merckvetmanual.com/poul...ew-of-infectious-laryngotracheitis-in-poultry