According to what I have read on here (nearly everything I can find about Denagard) it is safe to eat both the eggs and meat while using Denagard. Do a search on here and you will find quite a bit of info about its use and dosage. Check out post #10 by DAFox in this thread :
Denagard has the added advantage of having zero withdrawal period for eggs as it is unrelated to any antibiotic used in humans. You can read more about it here: