clipped from www.nytimes.com A Dying Breed Herd Extinct: The Ankole cow could disappear within 50 years. GERSHOM MUGIRA COMES from a long line of cattle-keepers. His people, the Bahima, are thought to have migrated into the hilly grasslands of western Uganda more than a thousand years ago, alongside a hardy breed of longhorns known as the Ankole. For centuries, man and beast subsisted there in a tight symbiotic embrace. Mugira’s nomadic ancestors wandered in search of fresh pasture for their cattle, which in turn provided them with milk. It is only within the last few generations that most Bahima have accepted the concept of private property. Mugira’s family lives on a 500-acre ranch, and one sunny day in November, the wiry 26-year-old showed me around, explaining, with some sadness but more pragmatism, why the Ankole breed that sustained his forebears for so many generations is now being driven to extinction.