Variability of the nitrifying bacteria in the biofilm and water column of a recirculating aquaculture system for tilapia ( Oreochromis niloticus ) production

2019 ◽  
Vol 50 (9) ◽  
pp. 2537-2544 ◽  
Author(s):  
Alessandro Del’Duca ◽  
Dionéia Evangelista Cesar ◽  
Thiago Archangelo Freato ◽  
Raíza dos Santos Azevedo ◽  
Edmo Montes Rodrigues ◽  
...  
Keyword(s):  
Water Column ◽  
Oreochromis Niloticus ◽  
Nitrifying Bacteria ◽  
Recirculating Aquaculture System ◽  
Recirculating Aquaculture ◽  
Aquaculture System

scholarly journals Biomass production of Azolla microphylla as biofilter in a recirculating aquaculture system

2018 ◽  
Vol 2 (01) ◽  
pp. 14-19
Author(s):  
SUMOHARJO SUMOHARJO ◽  
MOHAMMAD MA’RUF ◽  
IRWAN BUDIARTO
Keyword(s):  
Growth Rate ◽  
Water Flow ◽  
Biomass Production ◽  
Oreochromis Niloticus ◽  
Recirculating Aquaculture System ◽  
Azolla Microphylla ◽  
Alternative Feed ◽  
Recirculating Aquaculture ◽  
Aquaculture System ◽  
Set Up

Sumoharjo, Ma’ruf M, Budiarto I. 2018.Biomass production of Azolla microphylla as biofilter in a recirculating aquaculture system. Asian J Agric 2: 14-19. This study utilized macrophyte (Azolla microphylla Kaulf.) as biofilter and perhaps that biomass produced in aquaculture system can be potential for alternative feed. This experiment such a first step of that vision and was aimed to determine the Azolla microphylla growth rate and its efficiency in removing ammonia from a simple recirculating aquaculture system. The experimental units were set up in three different water flow, i.e. 3 lpm, 5 lpm, and 7 lpm onto the three different geometrically baseboard of Tilapia (Oreochromis niloticus) growing tanks (prism, rectangular and limas).The result showed that water flow did not give significant effect(P < 0.10) on the growth rate of Azolla.The lower water flow (3 lpm) resulted in the highest amonia biofiltration efficiency which can remove ammonia up to 32.2±3.0% of the total NH3-N and NH4+-N (TAN).

Effects of water flow rates on growth and welfare of Nile tilapia (Oreochromis niloticus) reared in a recirculating aquaculture system

2019 ◽  
Vol 27 (2) ◽  
pp. 449-462 ◽  
Author(s):  
Kwasi Adu Obirikorang ◽  
Nelson Winston Agbo ◽  
Christian Obirikorang ◽  
Daniel Adjei-Boateng ◽  
Sefakor Esinam Ahiave ◽  
...  
Keyword(s):  
Water Flow ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Recirculating Aquaculture System ◽  
Flow Rates ◽  
Recirculating Aquaculture ◽  
Aquaculture System ◽  
Nile Tilapia Oreochromis Niloticus

scholarly journals Performance of Brooders, Fry and Growth of the Nile Tilapia (<i>Oreochromis niloticus</i>) Cultured in an Experimental Recirculating Aquaculture System

2015 ◽  
Vol 06 (09) ◽  
pp. 1014-1022 ◽  
Author(s):  
José Luis Arredondo-Figueroa ◽  
Laura Georgina Núñez-García ◽  
Jesús T. Ponce-Palafox ◽  
Irene de Los Ángeles Barriga-Sosa
Keyword(s):  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Recirculating Aquaculture System ◽  
Recirculating Aquaculture ◽  
Aquaculture System

scholarly journals Growth Performance of GMT and Mixed Sex Nile Tilapia Oreochromis niloticus on Natural and Supplemental Feeds

2007 ◽  
Vol 20 (4) ◽  
Author(s):  
P.W. PERSCHBACHER
Keyword(s):  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Food Sources ◽  
Natural Food ◽  
Ictalurus Furcatus ◽  
Recirculating Aquaculture System ◽  
Recirculating Aquaculture ◽  
Aquaculture System ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Genetically Improved

Attention has been focused on genetically-improved stocks and strains of tilapia. A greenhouse recirculating aquaculture system (RAS) of three 540 L tanks stocked with 100 37.2 g genetically male tilapia (GMT) Nile tilapia, Oreochromis niloticus, and three identical tanks with the same number of 38.1 g mixed sex Nile tilapia, was used to measure response to floating 3.0 mm catfish pellets (32 % protein) fed once per day at four different rates based on body weight day-1 (2-4 % BW day-1). Feed rate and amount were changed every 14 days based on growth measurements. For growth comparisons on natural feeds (primarily phytoplankton), two 10.5 m3 net pens were each stocked in August with 105 7.7 g Nile tilapia m-3 of each group in each of two 1.0 ha blue catfish Ictalurus furcatus fingerling ponds and not fed. Fish were harvested in November. GMT fish outperformed mixed sex fish on both feed sources, and at most feed rates. In RAS trials at 2, 2.5, 3.0 and 4.0 % BW feeding, percentage growth day-1 was 1.95, 2.11, 2.21 and 3.31 for GMT, and 1.60, 2.22, 1.97 and 2.86 for mixed sex; and the associated food conversion ratio (FCR) was 1.54, 1.37, 1.37 and 1.04 and 1.64, 1.35, 1.42 and 1.20, respectively. At harvest in net pens, GMT fish were 25 % larger than mixed sex. Growth was 1.3 and 1.0 g day-1 on natural food sources for GMT and mixed sex, respectively.

Variation of Water Quality in Fish Farm Using Recirculating Aquaculture System for Fancy Carp

2018 ◽  
Vol 19 (1) ◽  
pp. 37-45
Author(s):  
Woo Jin Lee ◽  
Seon Woo Baek ◽  
Ha Na Seo ◽  
Byeong Wook Kong ◽  
Deog Gwan Ra ◽  
...  
Keyword(s):  
Water Quality ◽  
Fish Farm ◽  
Recirculating Aquaculture System ◽  
Recirculating Aquaculture ◽  
Aquaculture System
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