This document provides information on various breeds of swine, including their origins and characteristics. It begins with discussing Philippine native pigs and their general traits of being small and late maturing. It then describes several purebreds such as Landrace, Yorkshire, Duroc, and Hampshire and their distinguishing features. The document also mentions upgraded breeds developed by crossing native pigs with foreign breeds. It provides details on the origins, appearances and traits of over 15 different pig breeds.