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Preserving the past protecting the future Preserving the past protecting the future Where science and history meet at the horns Cattlemens Texas Longhorn Conservancy Texas Longhorn Conservancy is dedicated to scientific and historical research and education associated with heritage Texas Longhorn cattle we recognize the value of this national treasure in its original phenotype appearance and genotype genetics for longhorn breeding. We provide ongoing resources toward research and education pertaining to the conservation preservation and protection of this naturally evolved historic breed. Conservation Semen Collection EducationalVideo Events Expand Your Horizons. Texas Longhorn Conservancy Where history and science meet at the horns witness the incredible power of modern DNA science combined with the rich heritage of the Texas Longhorn.