No, I wouldn't, not the antibiotics. Ducks tend to have far fewer diseases than chickens, from what I have read.
Some gro-gel during the first week would be good, or a vitamin-electrolyte-probiotic mix in their water once a week.
And if all you have to feed them is chick starter, then I'd add some niacin, up to 100 mg per gallon in their water. Plain niacin, not the no-flush or other kind. Open a capsule and stir it into the water.