Which term describes a young female hog that has not yet farrowed?

The term that accurately describes a young female hog that has not yet farrowed is "gilt." In agricultural terminology, a gilt is specifically used to refer to a young female pig that is typically under a year old and has not yet given birth. This distinction is important in swine production as management practices can differ significantly for gilts compared to older females.

In contrast, a sow refers to an adult female hog that has already farrowed at least once, while a barrow is a castrated male hog and a boar is an intact male hog used for breeding. Understanding these terminologies helps in proper breeding and management practices within agriscience involving swine.