Actually the IV may work even better, though again, no clue whatsoever on dosages. All I know is that it apparently works better than the oral method.
Having said that, I've read in the past that Saline + CDS was used on cattle to combat Antibiotic resistant infections which apparently worked very well. And so if you know how to make CDS then I'd certainly recommend looking into that.
PS. there was a video going around of a man injecting Miracle-Mineral-Supplement through IV to show that it was safe for humans. Though again, no clue what would be considered safe for an animal. IMO. you'd have to set a ratio by weight.
PS. have you considered trying the genesis2forums? I've read a few threads there of people who administered Miracle-Mineral-Supplement to their animals.