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Raising Monoculture of Daphnia, the Live Fish Meal, in Sewage Oxidation Ponds

机译:在污水氧化池中提高水生鱼粉水蚤的单养水平

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Live fish-meals are better choice than formulated meals for many reasons and water flea Daphnia (Crustacea: Branchiopoda: Cladocera) is one of the preferred choices of aquaculturists. it has been attempted to raise the culture of water flea in the sewage oxidation pond with encouraging results. A population over 9000 per litre was obtained within 25 days in winter and 10 days in summer opposite to the decrease in BOD level in the pond. The water flea presented high nutritive value with protein, lipid and carbohydrate being 45.31, 12.0 and 5.4 % dry weight respectively. This ecofriendly technique making use of waste in productive process is recommended for raising cheap and nutritionally rich food substitute in culture fishery.
机译:出于多种原因,活鱼粉比配制鱼粉是更好的选择,而水蚤水蚤(甲壳纲:Branchiopoda:克拉多菌)是水产养殖者的首选之一。已经尝试在污水氧化池中增加水蚤的养殖,并取得令人鼓舞的结果。在冬天的25天之内和夏天的10天之内获得了每公升9000多头的种群,这与池塘中BOD含量的下降相反。水蚤具有较高的营养价值,蛋白质,脂质和碳水化合物的干重分别为45.31、12.0和5.4%。建议将这种在生产过程中利用废物的环保技术用于在养殖渔业中增加廉价且营养丰富的食品替代品。

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