It is essential that your Corso be part of your family. Corsos left alone to guard livestock or property are unhappy and likely to do their job poorly. Corsos were bred to be guardians as well as companions and hunters, and need interaction and training with their family to be happy. Your Corso's puppyhood should be devoted to socialization with other dogs, people, livestock, and anything else they will encounter in adulthood. Even when your Corso is grown, it is important that you continuously expose her to new experiences and people so that she keeps relying on you to tell her when she should protect and when she shouldn't.
If you want your Corso to learn to protect your property or livestock, acquaint her with what she will be protecting while she is young. Manage her interactions with livestock so that she learns these are friends to be protected and not prey items. Encourage her to react to predators and teach her their scents early so she learns that those are the appropriate targets for attack.