Do not use in birds producing eggs for human consumption. There is a ZERO withdrawal time for slaughter. Administer 7 to 14 days to chickens and turkeys and up to 5 days for swine.
I've noticed that almost everywhere has stopped selling Terramycin, which is the same type of medicine (oxytetracycline).
I wonder if the reason for being advised not to use in egg layers is something similar as for Baytril-- The birds' systems may continuously grow bacteria for the rest of the chickens' lives that may be hazardous to people who eat their eggs. I don't know if this is the case, or maybe if no one has ever established a true withdrawal time for eggs or ????