Nile tilapia post-larvae production in a recirculating aquaculture system with rectangular tanks and different water inlet designs
DOI:
https://doi.org/10.5965/223811712042021309Keywords:
productive performance, hydrodynamics, water quality, rectangular tanks, dead zonesAbstract
The aim of the present study was to evaluate the effect of the water inlet design in rectangular tanks, on the water quality and productive performance of Nile tilapia post-larvae. 720 animals weighing 0.02 g and 12.52 mm in length were distributed in 12 rectangular tanks, with a length/width ratio of 1.20 and a water inlet flow of 3.2 times the useful volume of the tanks. The treatments consisted of three water inlet designs: upper, single vertical submerged, and double vertical submerged, distributed in four replicates each. Productive performance (weight and final length, specific growth rate, condition factor and survival) and water quality (pH, dissolved oxygen, temperature, dissolved solids and electrical conductivity) parameter were evaluated. Dissolved oxygen was evaluated at the four ends and center of each tank to check for dead zones. In addition, the suspended solids concentration was evaluated 30 minutes after feeding at 21 days of study. The water inlet design did not influence the productive performance and the general parameter of water quality (p>0.05). There was no difference in the concentration of dissolved oxygen within the tank for each treatment, which indicates that there was no formation of dead zones (p>0.05). There was a difference in the concentration of dissolved oxygen in the extremities and the center of the tanks due to the treatments, where the lowest values were verifies for the tanks with submerged vertical water inlet (p<0.05). The tanks with submerged vertical double inlets showed a lower concentration of suspended solids, compared to the other treatments (p<0.05). Thus, the use of a single vertical submerged inlet is not indicated and there was no negative influence on production performance and water quality, it is possible to produce Nile tilapia post-larvae with upper water inlet.
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References
APHA. 1998. Standard Methods for the Examination of Water and Wastewater. 20.ed. Washington: American Water Works Association and Water Environmental Federation.
BOYD CE. 2012. Water quality. In: LUCAS JS & SOUTHGATE PC (Ed.). Aquaculture: farming aquatic animals and plants. Chichester: Blackwell Publishing. p.52–82.
BURLEY R & KLAPSIS A. 1985. Flow distribution studies in fish rearing tanks. Part 2-analysis of hydraulic performance of 1m square tanks. Aquacultural Engineering 4: 113–134.
CHEN S et al. 1993. Suspended solids characteristics from recirculating aquacultural systems and design implications. Aquaculture 112: 143–155.
CHINA V et al. 2017. Hydrodynamic regime determines the feeding success of larval fish through the modulation of strike kinematics. Proceedings of the Royal Society B: Biological Sciences 284: 1-8.
CHINA V & HOLZMAN R. 2014. Hydrodynamic starvation in first-feeding larval fishes. Proceedings of the National Academy of Sciences of the United States of America 111: 8083–8088.
DUARTE S et al. 2011. Influence of tank geometry and flow pattern in fish distribution. Aquacultural Engineering 44: 48–54.
EMBRAPA. 2013. Piscicultura de água doce: multiplicando conhecimentos. 1.ed. Brasília: Embrapa.
FØRE M et al. 2018. Precision fish farming: a new framework to improve production in aquaculture. Biosystems Engineering 173: 176–193.
GORLE JMR et al. 2018a. Hydrodynamics of octagonal culture tanks with Cornell-type dual-drain system. Computers and Electronics in Agriculture 151: 354–364.
GORLE JMR et al. 2018b. Water velocity in commercial RAS culture tanks for Atlantic salmon smolt production. Aquacultural Engineering 81: 89–100.
GORLE JMR et al. 2019. Hydrodynamics of Atlantic salmon culture tank: Effect of inlet nozzle angle on the velocity field. Computers and Electronics in Agriculture 158: 79–91.
KEBUS MJ et al. 1992. Effects of rearing density on the stress response and growth of rainbow trout. Journal of Aquatic Animal Health 4: 1–6.
LEKANG OI. 2013. Aquaculture Engineering. 2.ed. Oxford: John Wiley & Sons.
LEWANDOWSKI V et al. 2018. Spatial and temporal limnological changes of an aquaculture area in a neotropical reservoir. Annales de Limnologie 54: 1-9.
OBIRIKORANG KA et al. 2019. Effects of water flow rates on growth and welfare of Nile tilapia (Oreochromis niloticus) reared in a recirculating aquaculture system. Aquaculture International 27: 449–462.
OCA J & MASALÓ I. 2013. Flow pattern in aquaculture circular tanks: Influence of flow rate, water depth, and water inlet and outlet features. Aquacultural Engineering 52: 65–72.
OCA J & MASALÓ I. 2007. Design criteria for rotating flow cells in rectangular aquaculture tanks. Aquacultural Engineering 36: 36–44.
OCA J et al. 2004. Comparative analysis of flow patterns in aquaculture rectangular tanks with different water inlet characteristics. Aquacultural Engineering 31: 221–236.
RIBEIRO PAP et al. 2015. Efficiency of eugenol as anesthetic for the early life stages of Nile tilapia (Oreochromis niloticus). Anais da Academia Brasileira de Ciencias 87: 529–535.
SÁNCHEZ IA & MATSUMOTO T. 2012. Hydrodynamic characterization and performance evaluation of an aerobic three phase airlift fluidized bed reactor in a recirculation aquaculture system for Nile Tilapia production. Aquacultural Engineering 47: 16–26.
SCHUMANN M & BRINKER A. 2020. Understanding and managing suspended solids in intensive salmonid aquaculture: a review. Reviews in Aquaculture 12: 2109–2139.
SØRENSEN M et al. 2009. Soybean meal improves the physical quality of extruded fish feed. Animal Feed Science and Technology 149: 149–161.
SURESH V & BHUJEL RC. 2012. Tilapias. In: LUCAS JS & SOUTHGATE PC. (Ed.). Aquaculure: farming aquatic animals and plants. Chichester: Blackwell Publishing Ltd.p.338–383.
TACHIBANA L et al. 2008. Densidade de estocagem de pós-larvas de tilápia do Nilo (Oreochromis niloticus) durante a fase de reversão sexual. Boletim do Instituto de Pesca 34: 483–488.
TIDWELL JH. 2012. Aquaculture production systems. 1.ed. Chichester: Blackwell Publishing.
TIMMONS et al. 2018. Recirculating Aquaculture. 4.ed. New York: Ithaca Publishing Company, 2018.
RIJN JV. 2013. Waste treatment in recirculating aquaculture systems. Aquacultural Engineering 53: 49–56.
VAROL M & ŞEN B. 2009. Assessment of surface water quality using multivariate statistical techniques: a case study of Behrimaz Stream, Turkey. Environmental Monitoring and Assessment 159: 543–553.
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