No, you should not use it as a preventative. Over use of antibiotics is a wonderful way to create resistant bacteria on both them and ourselves. Over half the deaths in hospitals are due to infections that cannot be killed because they are resistant to antibiotics.
Please don't use them unless you know you have infection or have a high risk injury. They aren't a miracle drug. Furthermore, you WANT a healthy bacteria load to coat the birds in and out, to out compete the bad ones which can make them sick. Kill them all and you open the doors for virulent strains, which are often "weaker" in their ability to replicate vs wild type strains, to take hold and become a problem.