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Laboratory and on‐farm evaluation of low‐cost salt mixtures for use during salinity acclimation and the nursery phase of Pacific white shrimp (Litopenaeus vannamei)
Aquaculture Research ( IF 2 ) Pub Date : 2020-05-15 , DOI: 10.1111/are.14681
Harsha Galkanda‐Arachchige 1, 2 , Luke A. Roy 1, 3 , Sunni Dahl 1, 3 , Jesse James 1, 3 , Anita M. Kelly 1, 3 , Donald Allen Davis 1
Affiliation  

The current study evaluates the efficacy of a low‐cost salt mixture (LCSM) to replace expensive reconstituted sea salt (RSS) in the salinity acclimation and nursery phase of Pacific white shrimp under laboratory and farm conditions. LCSM was formulated to yield sodium, potassium, calcium and magnesium concentrations closely comparable to that of diluted seawater. Laboratory‐based nursery trials were conducted at 2, 6 and 15 g/L salinities, incrementally replacing RSS with LCSM (25%, 50%, 75% and 100%) at four replicates per treatment. Thirty postlarvae were reared for 7 days in 24‐L aquaria during the 2 and 6 g/L trials, while the nursery trial for 15 g/L salinity was conducted for 21 days with 400 postlarvae stocked in 150‐L tanks. On‐farm evaluation of LCSM was carried out in two tank‐based systems installed on levees adjacent to shrimp production ponds. RSS was incrementally replaced with LCSM (0%, 50%, 75% and 100%) and 100 postlarvae stocked into each 800‐L tank. Salinity acclimation was done from 30 g/L to 6 or 1.5 g/L within 2–3 days by pumping water from adjacent shrimp production ponds. Following salinity acclimation, the S4 system maintained flow‐through at 1.5 g/L, while N10 system was maintained static at 6 g/L salinity. At the conclusion, no significant differences were observed for either survival or growth of shrimp postlarvae 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:

在盐度适应和太平洋白虾(Litopenaeus vannamei)的育苗阶段使用的低成本盐混合物的实验室和农场评估

本研究评估了在实验室和养殖场条件下,低成本盐混合物(LCSM)替代太平洋白虾盐分适应和育苗阶段中昂贵的再生海盐(RSS)的功效。LCSM的配方可产生与稀释海水相当的钠,钾,钙和镁浓度。基于实验室的苗圃试验以2、6和15 g / L的盐度进行,每次处理重复四次,用LCSM(25%,50%,75%和100%)逐步替代RSS。在2和6 g / L的试验中,将30只幼虫在24 L的水族箱中饲养7天,同时对15 g / L盐度的苗圃试验进行21天,并在150 L的水箱中放养400只幼虫。LCSM的农场评估是在两个基于虾类的系统中进行的,这些系统安装在虾生产池塘附近的堤坝上。RSS被LCSM(0%,50%,75%和100%)逐步取代,并且在每个800-L的水箱中放养了100个幼体。通过从相邻的虾生产池中抽水,在2至3天内将盐度适应度从30 g / L提高到6或1.5 g / L。盐度适应后,S4系统的流通量保持在1.5 g / L,而N10系统的静态保持在6 g / L的盐度。结论是,在所有盐度下,RSS和LCSM处理之间虾后幼虫的存活或生长均无显着差异。结果反映出有可能使用LCSM替代RSS,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。RSS被LCSM(0%,50%,75%和100%)逐步取代,并且在每个800-L的水箱中放养了100个幼体。通过从相邻虾生产池中抽水,在2至3天内使盐度适应度从30 g / L升至6或1.5 g / L。盐度适应后,S4系统的流通量保持在1.5 g / L,而N10系统的静态保持在6 g / L的盐度。结论是,在所有盐度下,RSS和LCSM处理之间虾后幼虫的存活或生长均无显着差异。结果反映出可能使用LCSM替代RSS,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。RSS被LCSM(0%,50%,75%和100%)逐步取代,并且在每个800-L的水箱中放养了100个幼体。通过从相邻的虾生产池中抽水,在2至3天内将盐度适应度从30 g / L提高到6或1.5 g / L。盐度适应后,S4系统的流通量保持在1.5 g / L,而N10系统的静态保持在6 g / L的盐度。结论是,在所有盐度下,RSS和LCSM处理之间虾后幼虫的存活或生长均无显着差异。结果反映出可能使用LCSM替代RSS,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。通过从相邻虾生产池中抽水,在2至3天内使盐度适应度从30 g / L升至6或1.5 g / L。盐度适应后,S4系统的流通量保持在1.5 g / L,而N10系统的静态保持在6 g / L的盐度。结论是,在所有盐度下,RSS和LCSM处理之间虾后幼虫的存活或生长均无显着差异。结果反映出可能使用LCSM代替RSS,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。通过从相邻虾生产池中抽水,在2至3天内使盐度适应度从30 g / L升至6或1.5 g / L。盐度适应后,S4系统的流通量保持在1.5 g / L,而N10系统的静态保持在6 g / L的盐度。结论是,在所有盐度下,RSS和LCSM处理之间虾后幼虫的存活或生长均无显着差异。结果反映出可能使用LCSM代替RSS,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。在所有盐度下,RSS和LCSM处理之间虾后幼虫的存活或生长均未观察到显着差异。结果反映出可能使用LCSM代替RSS,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。在所有盐度下,RSS和LCSM处理之间虾后幼虫的存活或生长均未观察到显着差异。结果反映出可能使用LCSM代替RSS,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。
更新日期:2020-05-15
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