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首页> 外文期刊>Aquaculture International >Water quality and production performance of catfish-prawn co-culture with organic carbon source addition
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Water quality and production performance of catfish-prawn co-culture with organic carbon source addition

机译：添加有机碳源的of鱼虾对虾养殖水质及生产性能

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摘要

The objective of this study was to determine the effects of prawn juveniles and organic carbon source on the water quality and production performance of catfish. The experiment consisted of three treatments in triplicates, i.e. catfish monoculture as the control (treatment A); catfish-prawn co-culture at a prawn density of 20 prawn/m(2) (treatment B) and catfish-prawn co-culture at a prawn density of 40 prawn/m(2) (treatment C). Catfish was reared in a bamboo cage inside experimental concrete ponds at an initial density of 100/m(2). Commercial feed pellets were only offered to the fish. In treatments B and C, organic carbon was added at an estimated C/N ratio of 10 to stimulate biofloc growth as the food source for the prawn juveniles. There was no significant difference in catfish growth among treatments. Dissolved inorganic nitrogen concentrations in B and C were generally lower than in the control. Although significantly affected by the initial stocking density, prawn growth was comparable to that fed with formulated feed. Catfish co-culture with prawn with C organic addition resulted in significantly higher feed nitrogen utilization. Overall results suggest that catfish-prawn co-culture with C organic addition may improve total food conversion ratio, reduce nitrogen waste and generate additional income for catfish farmers.
机译：这项研究的目的是确定对虾幼体和有机碳源对cat鱼水质和生产性能的影响。该实验包括三种处理，一式三份，即以cat鱼单一养殖为对照（处理A）; at虾对虾共养殖，对虾密度为20虾/ m（2）（处理B），cat鱼虾对虾共养殖，对虾密度为40虾/ m（2）（处理C）。 experimental鱼以实验密度100 / m（2）在实验混凝土池内的竹笼中饲养。商业饲料颗粒只提供给鱼。在处理B和C中，以估计的C / N比10的比例添加有机碳，以刺激生物絮凝物的生长，作为对虾幼鱼的食物来源。各处理之间cat鱼的生长无显着差异。 B和C中溶解的无机氮浓度通常低于对照。虽然虾的生长受到初始放养密度的显着影响，但虾的生长与配方饲料的生长相当。 addition鱼与对虾混合添加C有机会导致饲料氮利用率显着提高。总体结果表明，with鱼虾对虾与C有机添加的共培养可提高总的食物转化率，减少氮的浪费并为cat鱼养殖者带来额外的收入。

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