A female and a male well you know get together and then the egg cell inside the female was fertilized by the sperm cell inside the male.That's how a turkey egg gets fertilized. It doesn't always require both a male and a female to fertilize an egg. Sometimes a female can fertalize it on their own, this I can't explain. turkey egg isn't fertilized when the tom mates the female. The hen can hold the sperm up to 2 weeks. The egg is fertilized right before the shell becomes hard.