A Dartmouth manufacturer has come to the aid of a rhinoceros suffering from dry itchy skin in a Georgia zoo. Dr. Hayley Murphy, director of veterinary services for Zoo Atlanta, thought the "dry, flaky, skin [with] some ulcerations" exhibited by Boma, the zoo's black rhino, likely reflected broader health problems. When she met reps from Dartmouth-based Ascenta Health Ltd., at a trade show earlier this year, she decided to try an omega-3 dietary supplement Ascenta markets for horses. An Ascenta news release says Equine Omega-3 produced a dramatic improvement in Boma's skin problems after three months of use. Ascenta also makes human health...