Performance of Nile tilapia Oreochromis niloticus fingerlings in a hyper-intensive recirculating aquaculture system with low water exchange

The aim of this paper was evaluate the performance of Nile tilapia fingerlings (Oreochromis niloticus) raised at hyper intensive stocking density in a recirculating aquaculture system (RAS) with minimum water replacing. The experimental system was performed in a single-batch nursery system to obtain...

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Autores principales:	Gullian-Klanian,M, Arámburu-Adame,C
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2013
Materias:	Nile tilapia recirculating aquaculture system low water exchange intensification
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2013000100012
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spelling	oai:scielo:S0718-560X20130001000122013-08-01Performance of Nile tilapia Oreochromis niloticus fingerlings in a hyper-intensive recirculating aquaculture system with low water exchangeGullian-Klanian,MArámburu-Adame,C Nile tilapia recirculating aquaculture system low water exchange intensification The aim of this paper was evaluate the performance of Nile tilapia fingerlings (Oreochromis niloticus) raised at hyper intensive stocking density in a recirculating aquaculture system (RAS) with minimum water replacing. The experimental system was performed in a single-batch nursery system to obtain 50 g fish size in 60 days. Fish (2.07 ± 0.04 g) were stocked in triplicate at 400 (T1), 500 (T2) and 600 (T3) fish m-3 (0.84, 1.05, 1.22 kg m-3). RAS functioned with 12,000 L of recirculating water and 252 L day-1of water replacing (2.1% daily). The efficiency of the biofilter for removing the total ammonia nitrogen (TAN) was 48 ± 12.5 mg L-1. Stocking density did not affect significantly the survival (89.5 to 93.6%). The growth rate of T1 (0.96 g day-1; 5.01% day-1) and T2 (0.92 g day-1; 4.95 % day-1) was significantly higher than T3 (0.83 g day-1; 4.80% day-1). The specific growth rate (SGR) of T1 was 41% influenced by temperature. For T2 and T3 the SGR were influenced by the variation of dissolved oxygen (DO) that explained 47 and 44% of the fish weight variation, respectively. The SGR from T3 was also affected by the concentration of ammonia nitrogen (31%). The high stocking density affected the overall size of fish and the size homogeneity, but had no negative effect on the length-weight relationship (L-W). Data support the conclusion that fingerling stocked at 400 and 500 fish m-3 shows high performance during 9-weeks when the biomass not exceed 37 kg m-3. At this time fish have reached the desired final nursery weight (50 g) for transfer to grow-out facilities.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.41 n.1 20132013-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2013000100012en103856/vol41-issue1-fulltext-12
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Nile tilapia recirculating aquaculture system low water exchange intensification
spellingShingle	Nile tilapia recirculating aquaculture system low water exchange intensification Gullian-Klanian,M Arámburu-Adame,C Performance of Nile tilapia Oreochromis niloticus fingerlings in a hyper-intensive recirculating aquaculture system with low water exchange
description	The aim of this paper was evaluate the performance of Nile tilapia fingerlings (Oreochromis niloticus) raised at hyper intensive stocking density in a recirculating aquaculture system (RAS) with minimum water replacing. The experimental system was performed in a single-batch nursery system to obtain 50 g fish size in 60 days. Fish (2.07 ± 0.04 g) were stocked in triplicate at 400 (T1), 500 (T2) and 600 (T3) fish m-3 (0.84, 1.05, 1.22 kg m-3). RAS functioned with 12,000 L of recirculating water and 252 L day-1of water replacing (2.1% daily). The efficiency of the biofilter for removing the total ammonia nitrogen (TAN) was 48 ± 12.5 mg L-1. Stocking density did not affect significantly the survival (89.5 to 93.6%). The growth rate of T1 (0.96 g day-1; 5.01% day-1) and T2 (0.92 g day-1; 4.95 % day-1) was significantly higher than T3 (0.83 g day-1; 4.80% day-1). The specific growth rate (SGR) of T1 was 41% influenced by temperature. For T2 and T3 the SGR were influenced by the variation of dissolved oxygen (DO) that explained 47 and 44% of the fish weight variation, respectively. The SGR from T3 was also affected by the concentration of ammonia nitrogen (31%). The high stocking density affected the overall size of fish and the size homogeneity, but had no negative effect on the length-weight relationship (L-W). Data support the conclusion that fingerling stocked at 400 and 500 fish m-3 shows high performance during 9-weeks when the biomass not exceed 37 kg m-3. At this time fish have reached the desired final nursery weight (50 g) for transfer to grow-out facilities.
author	Gullian-Klanian,M Arámburu-Adame,C
author_facet	Gullian-Klanian,M Arámburu-Adame,C
author_sort	Gullian-Klanian,M
title	Performance of Nile tilapia Oreochromis niloticus fingerlings in a hyper-intensive recirculating aquaculture system with low water exchange
title_short	Performance of Nile tilapia Oreochromis niloticus fingerlings in a hyper-intensive recirculating aquaculture system with low water exchange
title_full	Performance of Nile tilapia Oreochromis niloticus fingerlings in a hyper-intensive recirculating aquaculture system with low water exchange
title_fullStr	Performance of Nile tilapia Oreochromis niloticus fingerlings in a hyper-intensive recirculating aquaculture system with low water exchange
title_full_unstemmed	Performance of Nile tilapia Oreochromis niloticus fingerlings in a hyper-intensive recirculating aquaculture system with low water exchange
title_sort	performance of nile tilapia oreochromis niloticus fingerlings in a hyper-intensive recirculating aquaculture system with low water exchange
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2013000100012
work_keys_str_mv	AT gullianklanianm performanceofniletilapiaoreochromisniloticusfingerlingsinahyperintensiverecirculatingaquaculturesystemwithlowwaterexchange AT aramburuadamec performanceofniletilapiaoreochromisniloticusfingerlingsinahyperintensiverecirculatingaquaculturesystemwithlowwaterexchange
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Performance of Nile tilapia Oreochromis niloticus fingerlings in a hyper-intensive recirculating aquaculture system with low water exchange

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