Bog asphodel (Narthecium ossifragum) as a cause of photosensitisation in lambs in Norway

摘要: In a five year experiment, 195 lambs and their dam were kept on four plots of wet moorland rich in the plant Narthecium ossifragum. The top-dressed with calcium and, or, phosphorus, or given no treatment. After three years, disappeared from to which phosphorus had been applied, but remained where only used. saponin content appeared be uninfluenced by type top-dressing time year. Photosensitisation (alveld) occurred all during first years. During fourth disease persisted. fifth did not occur any plot. Alveld was produced two repeated administration large quantities preparations N Lambs haemoglobin AA significantly more resistant than BB. nearly half cases, bromsulphthalein liver function test indicated susceptibility alveld up seven days before appearance clinical signs. Increased retention common amongst BB lambs, developed alveld, few lambs. differences significant.