Use plain neosporin or plain triple antibiotic ointment on the wounds. Apply 2 or 3 times a day, as needed to keep them covered in ointment and moist. Those are very likely injuries from mounting. 2 roosters is way too much for 3 hens. Usually about 10 hens to 1 roo is a good number, give or take. Less hens or more roo's than that ends up with beat up or injured hens, as you have found. So I would separate the boys and let the girls recover. You will need to get more hens, or rehome the boys. If you don't plan on hatching your own eggs, you don't have to have a roo at all, unless you want one. If you want to keep the boys I would house them separately in a bachelor pad.