I have a hen with suspected lash egg. I had on die previously of this a few weeks ago. Her symptoms come and go (which is similar to my other hen that passed) so I don't know how much of an emergency, but I would like to be proactive. I haven't been able to get a call back from the vet for the past week, so I'm looking at antibiotics I might be able to get myself at the vet supply. I was told to get an injectible oxytetracycline like LA-200 or Bio-Mycin. Does anyone have recommendations, experiences using this or know dosage? TY!!