4 Friesians at my horse stable have died for unknown reasons. I live in Central America where it is very very hot and humidity is above 90% in the rainy season.
Days after piaffe training/high school training they have presented symptoms of laminitis, chronic diarrhea and stomach problems. Only adult horses have presented these symptoms and have died days after the training. None of our Friesian Colts have died or presented these symptoms.
We also have Spanish horses that go through the same training and they are all healthy and are not going through any of these symptoms. They go through the same care of our Friesians.
We are not feeding our Friesians alfalfa.
Please help, I don't know what to do anymore. The vet doesn't know either. I've had two vets come and they don't know...