Deworming and antibiotics at the same time.

my deworming programme has overlapped with a spell of antibiotics (Denagard) for two under the weather hens. the Denagard won't nullify the worming will it?

I'm certainly no expert but I took one of my girls to the vets on Friday, she has been perscribed Baytril, I told the vets I was half way through worming and she never told me to stop or that it was a problem. I would always call the vets though to be on the safe side.