Between 1910 and 1920, many cattle in southwestern Texas and the Gulf Coast region showed significant evidence of Bos indicus influence. While some breeders attempted to maintain purebred stock, they were in the minority, as many bulls used during this period were the result of crossbreeding.

India is home to approximately 30 well-defined cattle breeds. Three principal strains—Guzerat, Nellore, and Gir—were imported to the United States and played a key role in the development of the Brahman breed. The Krishna Valley strain was also introduced but to a lesser extent. The Guzerat strain, with its resemblance to cattle developed in the American West, appears to have been the preferred type among cattlemen.

With fewer than 300 imported Brahmans on record—most of them bulls—it is evident that other breeds contributed to the foundation of the Brahman breed. These bulls were crossed with European cattle and their descendants, leading to successive generations that carried a dominant Bos indicus lineage. Through careful selection, breeders developed an animal not only well-adapted to its environment but also superior to the original imports in terms of dairy production.