For example, an adult male chum salmon on the spawning grounds contains an average of 130 grams of nitrogen, 20 grams of phosphorus and more than 20,000 kilojoules of energy in the form of protein and fat.

• 举例来说，产卵地的一条成年雄性狗鲑，体内平均含有130克的氮、20公克的磷，以及能量超过20000千焦耳的蛋白质及脂质。