Santa Gertrudis cattle are a tropical beef breed of cattle developed in southern Texas on the King Ranch. This breed was officially recognized by the US Department of Agriculture in 1940, becoming the first beef breed formed in the United States. The Santa Gertrudis breed was formed by mating Brahmanbulls with Beef Shorthorn cows, with the final composition being about 3/8 Brahman and 5/8 Shorthorn. The Santa Gertrudis breed is noted for is adaptability to harsh climates and was first imported into Australia back in 1952. Since then, the breed has grown in popularity as a large beef breed with mature bulls weighing from 900kg.