x2. Very common for this breed to have a high prey drive. No matter what breed of dog you get you must plan on many hours, months, years even, of training. Large dogs are considered pup's until at least two years of age so do not plan on being able to throw a young dog in the yard with the chickens after just a couple months and have your chickens still alive. The time and effort involved are well spent when you turn out a good dog.
Have a place to keep the dog and a place to keep the chickens so there is no access. Take pup with you, on a leash, every time you take care of your birds. That way you control the pup and can correct inappropriate behavior as it happens. And of course reward and encourage good behavior. This way pup gets lots of exposure to the birds along with training and eventually, hopefully, the excitement over the birds is over. Just be aware that not every single dog will make a good ranch dog. A dog with a very high prey drive may never be trustworthy. Never allow pup alone with your birds. If you can raise this pup never having the chance to find that it's fun to run, chase and catch a chicken you are that much farther ahead. Many steps backwards if that does happen.
As far as male or female, I don't think it matters. It all boils down to your diligence in training and the dogs temperment/prey drive.