Hi. I have some 3+ week old silkies on antibiotic (Duramycin ) for a respiratory issue. Only a few were showing symptoms but I decided to dose the whole bunch cause I figured they had all been exposed. I've also been giving them probios powder in their food and Polyvisol. A few of them are lethargic and one has developed a squishy crop today. I bought some Bragg OACV today. How do you give the chick the vinegar while on antibiotics? We are on day 5 of the course. What should I do for the sleepy, squishy chick? I feel bad now for putting them all on antibiotics.. I haven't noticed a foul odor from the squishy cropped one yet.