Blending fishwastes and chicken manure extract as low-cost and stable diet for mass culture of freshwater zooplankton, optimized for aquaculture
Blending fishwastes and chicken manure extract as low-cost and stable diet for mass culture of freshwater zooplankton, optimized for aquaculture
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将鱼废料和鸡粪提取物混合作为低成本、稳定的饲料，用于大规模养殖淡水浮游动物，优化水产养殖
DOI：
10.1088/1757-899x/567/1/012022
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Hagiwara A
中科院分区：
文献类型：
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作者：
Ogello E O;Wullur S;Hagiwara A
本研究探讨了以鱼粪和鸡粪提取物作为淡水浮游动物大量养殖廉价饵料的可行性。以CME和鱼粪为原料，添加碳源配制鱼粪日粮。在接种前3天，将每种饮食三份，每个罐中分别加入5、2和0.4 ind ml− 1的轮虫、桡足类和枝角类。每天约5毫升的水，从其中的动物园进行计数。在第一指数生长期通过替换50%的水和FWD进行收获。FWD B池的浮游动物密度和SGR显著高于FWD A池和对照池。浮游动物在第7天达到最高密度，如下所示：轮虫：FWD A、FWD B和对照池中分别为100.6±14.8、146.3±7.0和60.0±7.9 ind ml− 1;桡足类：FWD A、FWD B和对照池中分别为8.0±11.1、12.6±13.6和4.3±2.1 ind ml− 1;枝角类：FWD A、FWD B和对照罐中分别为3.3±6.0、8.6±8.7和3.6±2.5 ind ml− 1。最丰富的属是臂尾轮虫属，轮虫、桡足类和枝角类分别为剑水蚤属和水蚤属。这项研究为昂贵的现场微藻生产提供了一种替代方案，以实现更具成本效益的水产养殖。
This study investigated the feasibility of fishwastes and chicken manure extract (CME) as cheap diet for mass culture of freshwater zooplankton. CME and fishwastes as well as carbon source were used to make fishwaste diets (FWD). Each diet was triplicated 3 days before inoculation with 5, 2 and 0.4 ind ml− 1 of rotifers, copepods and cladocerans, respectively in each tank. About 5ml of water was done daily, from which the zooplankters were counted. Harvesting was done at the first exponential growth phase by replacing 50% of the water and FWD. There was a significantly higher density of zooplankton and SGR in FWD B than FWD A and control tanks. The zooplankton obtained highest densities on day 7 as follows: rotifers: 100.6±14.8, 146.3±7.0, and 60.0±7.9 ind ml− 1 in FWD A, FWD B and the control tanks, respectively; the copepods: 8.0±11.1, 12.6±13.6 and 4.3±2.1 ind ml− 1 in FWD A, FWD B and control tanks, respectively; the cladocerans: 3.3±6.0, 8.6±8.7 and 3.6±2.5 ind ml− 1 in FWD A, FWD B and control tanks, respectively. The most abundant genera were Brachionus sp., Cyclops sp. and Daphnia sp. for the rotifers, copepods and cladocerans, respectively. This study offers an alternative to expensive on-site microalgal production toward a more cost-effective aquaculture.