There's an apocalypse sperm bank in Colorado that is ready to go just in case we suddenly lose all of our chickens and pigs (God forbid). It contains over 700,000 samples from 18 different species.
So where does it all come from? Universities, companies and private collectors often donate semen to the NAGP. Other samples are tracked down by Blackburn and his colleagues. One woman in Broken Bow, Nebraska, had a rare breed of cattle dating back to the 1940s. “We called this farmer, asking for semen from her bulls,” Blackburn says. “She picked up the phone and said, ‘I thought you’d never call.’”
Link via Berman Institute.