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首页> 外文期刊>Journal of Aquaculture in the Tropics >PERIPHYTON-BASED POLYCULTURE OF JARAQUI, SEMAPROCHILODUSINSIGNIS (SCHOMBURGK, 1841) AND TAMBAQUI, COLOSSOMA MACROPOMUM(CUVIER, 1816) WITH FEED SUPPLEMENTATION
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PERIPHYTON-BASED POLYCULTURE OF JARAQUI, SEMAPROCHILODUSINSIGNIS (SCHOMBURGK, 1841) AND TAMBAQUI, COLOSSOMA MACROPOMUM(CUVIER, 1816) WITH FEED SUPPLEMENTATION

机译：JARAQUI，SEMAPROCHILODUSINSIGNIS（SCHOMBURGK，1841）和TAMBAQUI，COLOSSOMA MACROPOMUM（CUVIER，1816）的基于周长骨的饲料加补料

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The effect of feed vs. feed plus two substrates, a macrophyte (Pistia stratiotes) and plastic screen, on the performance of jaraqui (Semaprochilodus insignis) and tambaqui (Colossoma macropomum) was evaluated under polyculture. Jaraqui of 14.84-18.05g and tambaqui of 4.32-4.60 g initial average weight were stocked in triplicate at 1 fish per m2 in the ratio 70:30 in masonry tanks of 46 m2, with an average depth of 70 cm. The tanks were fertilized with urea, triple superphosphate and wheat bran. A commercial feed containing 36% protein was provided to satiation in the control and treatment tanks every morning in plastic trays suspended in the water column. Macrophyte supported higher periphyton biomass, while protein content was higher in periphytongrown on plastic screen. On termination of the 90-day culture, jaraqui reached a final weight of 34.32 g in the plastic screen treatment as against 22.89 g in the macrophyte treatment and 27.44 g in the control. Tambaqui grew to 137.36 g and 139.68 g size in macrophyte and plastic screen treatments respectively, both being marginally higher than that of the control, which recorded a final weight of 117.54 g. Survival of jaraqui and tambaqui ranged from 89.90% to 100% and 82.05% to 100%, respectively. The water quality parameters measured were generally within the acceptable range for fish culture.
机译：在混养条件下，评估了饲料与饲料以及两种底物，大型植物（Pistia stratiotes）和塑料筛对jaraqui（Semaprochilodus insignis）和tambaqui（Colossoma macropomum）的性能的影响。在46 m2的石制水箱中，以70:30的比例将三份一式三份的Jaraqui（14.84-18.05 g）和tambaqui（4.32-4.60 g初始平均重量）放到鱼中，平均深度为70 cm。用尿素，三重过磷酸钙和麦麸施肥。每天早晨，将含有36％蛋白质的商业饲料在悬浮在水柱中的塑料托盘中的对照和处理罐中进行饱食。大型植物支持较高的周生植物生物量，而塑料筛上周生植物中的蛋白质含量较高。在结束90天的培养后，塑料筛选处理中的jaraqui最终重量达到了34.32 g，而大型植物处理中的最终重量为22.89 g，对照组为27.44 g。在大型植物和塑料筛分处理中，Tambaqui分别增至137.36 g和139.68 g，均略高于对照，后者的最终重量为117.54 g。 jaraqui和tambaqui的存活率分别为89.90％至100％和82.05％至100％。测得的水质参数通常在鱼类养殖的可接受范围内。

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