水蚤即溞,俗称红虫,是禽、畜、鱼类的好饲料。其干品含蛋白质60.4%、脂肪21.8%、糖1.1%;酪氨酸4.27%、色氨酸3.62%、精氨酸10.92%、组氨酸2.69%、胱氨酸1.17%、蛋氨酸3.45%。还含有丰富的维生素和矿物质,营养价值优于鱼粉。溞一般体长2毫米以下,大的4～6毫米,体重7～10毫克。从卵中孵出后约5～6天成熟,一生蜕皮20～25次,每隔2～4天蜕皮一次。一生产卵400～500个,可行孤雌生殖,环境不良时行有性生殖,以有性生殖的冬卵越冬。夏季寿命35～40天,春、秋季80～90天。溞以过滤水的方式滤食单细胞绿 Daphnia that is 溞, commonly known as red worms, poultry, livestock, fishes good feed. The dried product contains 60.4% protein, 21.8% fat, 1.1% sugar, tyrosine 4.27%, tryptophan 3.62%, arginine 10.92%, histidine 2.69%, cystine 1.17% and methionine 3.45%. Also rich in vitamins and minerals, nutritional value is better than fishmeal.溞 general body length of 2 mm or less, large 4 to 6 mm, weight 7 to 10 mg. After hatching from the eggs about 5 to 6 days mature, life molting 20 to 25 times, every 2 to 4 days molting once. A production of eggs 400 to 500, feasible parthenogenesis, sexual reproduction when sexual reproduction, sexual reproduction of winter eggs overwinter. Summer life of 35 to 40 days, spring, autumn 80 to 90 days.溞 filter the way to filter water single-cell green