I read on this forum than Penicillin G Procaine is indicated as an antibiotic treatment for wounded chickens(http://www.backyardchickens.com/t/352701/how-do-i-administer-a-penicillin-shot-to-a-chicken). Unfortunately it is not immediately available in my locale. Our feed store has a product called Dura-Pen which is penicillin g benzathine and penicillin g procaine together. Is this safe to give to chickens?
"Dura-Pen" penicillin g benzathine and penicillin g procaine
I am not that familiar with benzathene penicillin G, but it is only supposed to be given every 48 to 72 hours, as opposed to procaine pen G which can be given daily for 4 days. I would probably give 1/4 ml every 2 days for only 2 doses. You may find more info by doing a search at the top of this page for durapen or benzathene penicillin g.