Need Advice. Goat Down with backend problems??

[blackie's maiden]

Didn't make sense to us either. His breathing was very labored when we took him to vet and even after the steroid and antibiotic shot. Vet said his vitals and rumen looked good. But once home he did manage to pull both back legs under him and raise his back end up momentarily, then collapse Even managed to eat and drink a little so we were hopeful. Then, just dead!