So sorry to read about your boy, I hope the rest of them pull thru. when I live with my parents I had goats, a neighbour did the same thing, my poor girl was vomiting stuff up, all over the walls, I've never seen an animal go downhill so quick, had the vet, kept checking her thru the night, had next day off work, luckily she survived, don't remember any screaming.
I think I'd read someting about a high dose of vit C helped?
Just been looking at goat veterinary book. I presume they would be similar to goats in this instance?.
goats vomit, salivate, become very depressed. can be ill for several days and develop laboured breathing. Vitamins can be useful to speed up detoxification. Vet may prescribe penicillin injection because of poisons affect on digestive system.
Good Luck