Pacific white shrimp, Litopenaeus vannamei, exhibit a remarkable ability to tolerate low‐salinity environments, facilitating its culture far from coastal areas using various production systems at salinities less than 15 g/L. Recirculating aquaculture systems (RAS) and biofloc systems are usually operated using reconstituted sea salt (RSS), which is a considerable financial burden to commercial producers due to its higher price. Current study was carried out with the objective of testing the efficacy of a low‐cost salt solution to replace expensive RSS to grow shrimp under laboratory conditions. Low‐cost salt mixture (LCSM) was formulated to yield sodium, potassium, calcium and magnesium concentrations closely comparable to that of diluted seawater using agriculture grade sodium chloride, magnesium chloride, magnesium sulphate, potassium oxide, calcium chloride and sodium bicarbonate. Growth trials were conducted at three different salinities of 3, 6 and 15 g/L, incrementally replacing RSS with LCSM (0, 2.5, 25, 50, 75 and 100%) at four replicates per treatment. Twenty juvenile shrimp were reared for 42 days in 150 L polyethylene tanks. Ionic profile of water, ionic profile and osmolality of shrimp haemolymph were determined to justify growth and survival data through analysing ionic variations and osmoregulatory capacity of shrimp. At the conclusion, no significant differences were observed in survival, growth, osmoregulation and levels of cations in shrimp haemolymph between RSS and LCSM treatments at all salinities examined. Results reflect the potential use of LCSM to replace RSS which could be an excellent solution to bring down the cost of production in inland shrimp aquaculture.

中文翻译：

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评价替代盐混合物在内陆水产养殖中养殖太平洋白虾（Litopenaeus vannamei）

太平洋白虾，南美白对虾，表现出了出色的耐受低盐度环境的能力，使用各种盐分低于15 g / L的生产系统促进了其在远离沿海地区的养殖。循环水产养殖系统（RAS）和生物絮凝系统通常使用再生海盐（RSS）进行操作，由于其价格较高，这给商业生产者造成了沉重的财务负担。进行当前研究的目的是测试在实验室条件下低成本盐溶液替代昂贵的RSS来种植虾的功效。使用农业级氯化钠，氯化镁，硫酸镁，氧化钾，氯化钙和碳酸氢钠配制的低成本盐混合物（LCSM）产生的钠，钾，钙和镁的浓度与稀释的海水非常接近。生长试验以三种不同的盐度分别为3、6和15 g / L进行，每次处理重复四次，用LCSM（0％，2.5％，25％，50％，75％和100％）逐渐取代RSS。在150升聚乙烯储罐中饲养20只幼虾42天。通过分析虾的离子变化和渗透调节能力，确定了水的离子分布，虾血淋巴的离子分布和重量摩尔渗透压浓度，以证明生长和存活数据的合理性。结论是，在所有盐度下，RSS和LCSM处理之间在虾血淋巴的存活，生长，渗透压调节和阳离子水平方面均未观察到显着差异。结果反映出使用LCSM替代RSS的潜在用途，这可能是降低内陆虾类水产养殖生产成本的绝佳解决方案。