I have been treating my batch of month old chicks unvaccinated chicks for cocci for half a week now with corid because they were all seeiming droopy and not gaining weight, some had watery droppings. Its Wednesday and Sat will be the week of treatment. I have one chick in particular that is smaller than the others, always has been, but today I found it hunkering down, not eating or drinking and it has a gurgling/crackling sound when breathing. We do have some special circumstances in that we live in Congo, away from everything so I cant run to the feed store for stuff, medicated feed is not available and the only meds I have with me are what we brought here. I have given it drops of polyvisol and was going to mix up some Duramycin-10 solution to dropper that in. Suggestions on dosage? It is the powder. Any other suggestions are appreciated, though I may mot have other suggested meds. Thanks!