(一)营养成分西瓜下脚料含有鱼类所需糖及粗蛋白质、粗脂肪、粗纤维、叶绿素等营养物质,还含有胡萝卜素、硫胺素、核黄素、尼克酸、抗坏血酸等维生素及钙、磷、铁等矿物质。利用西瓜皮等下脚料喂鱼类,适口性好,易消化吸收,有利于鱼健康生长。同时,也扩大了饲料来源,降低生产成本,又减少了污染。 (A) Nutritional Components Watermelon scraps contain fish sugar and crude protein, crude fat, crude fiber, chlorophyll and other nutrients, but also contains carotenoids, thiamine, riboflavin, niacin, ascorbic acid and other vitamins and calcium , Phosphorus, iron and other minerals. The use of watermelon peel and other waste feeding fish, palatability, easy digestion and absorption, is conducive to the healthy growth of fish. At the same time, it also expanded the sources of feed, reduced production costs and reduced pollution.