You may find an answer in the links below under oxytetracycline or Duramycin 72-200:
http://www.drugs.com/vet/duramycin-72-200.html
http://avianmedicine.net/content/uploads/2013/03/09_therapeutic_agents.pdf
https://sites.google.com/a/poultrypedia.com/poultrypedia/medicine-chart
http://www.drugs.com/vet/duramycin-72-200.html
http://avianmedicine.net/content/uploads/2013/03/09_therapeutic_agents.pdf
https://sites.google.com/a/poultrypedia.com/poultrypedia/medicine-chart