Santa Gertrudis cattle are a tropical beef breed of cattle developed in southern Texas on the King Ranch. Named for the Spanish land grant where Captain Richard King originally established the King Ranch. This breed was officially recognized by the US Dept of Agriculture in 1940, becoming the first beef breed formed in the United States. The origin given by King Ranch is from mating Brahman bulls with Beef Shorthorn cows, with the final composition being about 3/8 Brahman and 5/8 Shorthorn
Angus - George Grant imported four Angus bulls from Scotland to Victoria, Kansas, in 1873. The black polled bulls, probably from the herd of George Brown of Westertown, Fochabers, Scotland, made a lasting impression on the U.S. beef industry.Today, the breed forms the majority of the U.S. cow herd thanks to the commitment of American Angus Association breeders and their commercial customers.
The "Red Angus" breed originated in the British Isles and recorded reference to the appearance of red cattle dates back to 1805. The first Angus herdbook, published in Scotland in 1862 entered both reds and blacks without distinction. Early in the development of the breed, Hugh Watson of Keilor, Scotland, arbitrarily decided that black was the proper color for the breed - he could just as easily have chosen red. The main difference between Red Angus and black Angus is color.