There's not much you can do about a tumor, but a bacterial infection could be treated with an antibiotic. It's been my experience that the best way to treat a bad bacterial infection is with enrofloxacin, but that is banned for use in poultry, though many people still use it, myself included.
Amoxicillin is an okay antibiotic, but I prefer enrofloxacin.
Here is an AI comparison:
Amoxicillin is an okay antibiotic, but I prefer enrofloxacin.
Here is an AI comparison:
