Yes, but research the dosage for a chicken and look into if it's a SubQ or Intramuscular. If it's Intramuscular inject into the breast muscle or thigh. Make sure you haven't put the needle in a vein. If it's too intimidating you can ask the vet to do it, but I've only ever used internal antibiotics for respiratory infections. I've never needed them for wounds.we just bought broad spectrum injectable because it was all they had. should we use that?