Effect of stocking density on growth performance of African catfish Clarias gariepinus and water spinach Ipomoea aquatica in aquaponics systems with the addition of AB mix nutrient (original) (raw)
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Nusantara Bioscience, 2017
Andriani Y, Dhahiyat Y, Zahidah, Zidni I. 2016. The effect of stocking density ratio of fish on water plant productivity in aquaponics culture system. Nusantara Bioscience 8: xxxx. This study aims to determine the productivity of water plants at various stocking density ratios in the aquaponic culture system. This study is conducted experimentally using the Completely Randomized Design with the differences in the treatment of stocking density ratio, each repeated five times. The treatments of the stocking density ratio of both the catfish fry and the Nile tilapia fry include: A (75:75 fry/m2), B (100:50 fry/m2, and C (125:25 fry/m2). The observed parameters are 1) plant productivity including measuring the growth of water spinach and growth rate, covering weight gain, stem length and number of leaves, and 2) water quality, including dissolved oxygen (DO), nitrate and phosphate. The data of plant productivity is analyzed descriptively while the water quality is analyzed using ANOVA. ...
The Production of Catfish and Vegetables in an Aquaponic System
Fisheries and Aquaculture Journal, 2016
Aquaponic is a system that mutually integrates aquaculture and plant cultivation (by means of hydroponic). Both crops are combined in a recirculating system that utilizes less water than the traditional farming. Nutrients contained in fish tanks are recycled into plant biomass with the presence of nitrifying bacteria that convert the excreted ammonia to nitrite and then to nitrate. In this study, fifteen sets of aquaponic system were developed to study the growth of African catfish (Clarias gariepinus) and three types of plants; the red and green-red amaranth (Amaranthus spp.) and water spinach (Ipomoea aquatica). The combination of aquaculture and hydroponic gives a new insight into increasing the efficiency of food production which respects principles of sustainable agriculture.
Desalination and Water Treatment, 2016
AbstractFrom both engineering and economic perspectives, goals of an aquaponic recirculation system are keeping a healthy environment for fish and plant, by eliminating toxic metabolites and growth-inhibiting substances. The type and quantity of waste excretions produced by the cultured organisms are also the important considerations, especially in designing the component system. Therefore, to be effective at nutrient removal, aquaponic systems should be sized correctly to balance fish output and nutrient uptake by plants. In this study, the plant component was isolated from the fish rearing operation so that nutrient removal could be evaluated independently. Two leafy green vegetables, i.e. water spinach (Ipomoea aquatica) and mustard green (Brassica juncea) were selected to evaluate the effectiveness of plant nutrient uptake to balance nutrient production from fish culture. Results indicated that nitrogen utilization efficiencies of water spinach and mustard green were 66.5 and 59.9%, respectively. In a...
Lettuce and water spinach growth in silver catfish (Pangasius Sp) culture using aquaponic system
Jurnal Agro
Solid and liquid wastes from feces and fish feed residues can affect water quality, which in turn affect fish physiological processes, behavior, growth and mortality. So it is necessary to have water quality management in the aquaponic system. This study aimed to observe the growth of lettuce and water spinach as biofilters in silver catfish culture (Pangasius sp) using aquaponic system. The study was conducted at the Laboratory of Fisheries, Faculty of Fisheries and Marine Sciences, Universitas Padjadjaran, from March to April 2018. This was an experimental study using Randomized Block Design (RBD) with two treatments and six repetitions to compare between combination of silver catfish and water spinach with silver catfish and lettuce combination. The parameters observed were fish growth, fish survival, increase in stem length, and increase in the number of leaves. The results show silver catfish and water spinach combination produced the highest crop with a stem length of 38.7 cm...
An experiment was conducted to compare effect of stocking density on growth performance of monosex tilapia (Oreochromis niloticus) with Indian spinach (Basella alba) in a recirculating aquaponic system. The experiment was set-up for 8 weeks under 4 treatments with three replications, where stocking density of tilapia were 30, 50, 70 and 90 fish/tank (300 litre) in treatments T1, T2, T3 and T4, respectively. Water from the tank was recirculated through a vegetable growing tray. Each of the tray was 0.15 m3in size, which was planted with 12 plants (Indian spinach). The fish of all the treatments was fed two times a day. During the experimental period,the range of water temperature was 27.1 to 31.50 C, pH 7.48 to 8.28, ammonia 0.2 to 2.0 mg/l and dissolve oxygen 5.11 to 6.58 mg/l. At the end of the experiment, average weight gain, final length, specific growth rate (%/day), survival rate was significantly higher in T1 (30 fish/tank) treatment while the net yield of fish and plant bioma...
Omni-Akuatika, 2022
The culture of fish and vegetable plants in aquaponic ebb-tide system is based on the principle of zerowaste aquaculture. The purpose of this study is to see how effective the use of different vegetable plants in an aquaponic ebb-tide system for intensive culture. As much as 3000 catfish (Clarias sp.) were stocked per pond (measuring 4 x 2 m 2), with individual lengths of 8-10 cm. A completely randomized design (CRD) with three treatments and three replications was used in this study. With 60 days of observation, the research treatments included a variety of vegetable plants: (A) water spinach, (B) caisin, and (C) no plants (control). Absolute weight gain and survival rate, water physico-chemistry parameters, Total N and Total P analyses on vegetable plants among the observation parameters. Treatment was found to have the highest average weight gain and survival rate (73.63 g and 87.41%, respectively). Water spinach biomass was 102 kg at the end of the study, whereas caisin biomass was 72.54 kg. Total N and Total P absorption percentages in water spinach were 38.72% and 54.43%, respectively, while 36.00% and 49.55% in caisin. The catfish condition factor showed correlation coefficients with fish weight R2 = 0.978, R2 = 0.956, and R2 = 0.357 and R2 = 0.892, R2 = 0.8215 and R2 = 0.369 for length in the water spinach, caisin, and control treatments, respectively. This study's analysis of water quality parameters indicated that the A treatment had the lowest levels of ammonia, nitrite, and nitrate when compared to the B and C treatments.
Vegetable Production in an Integrated Aquaponic System with Rainbow Trout and Spinach
In an integrated aquaponic system, the ratio between nitrogen production and plant assimilation is a key factor for system efficiency. That is why plant density is very important to be appropriate. The aim of this study is to expose the performances of growth parameters, both in terms of quantity and quality, for Nores variety spinach (Spinacia oleracea) produced in an aquaponic integrated system along with rainbow trout (Oncorhynchus mykiss), under three plant densities (V1-59 plants/m 2 , V2-48plants/m 2 and V3-39plants/m 2). The experimental design consists in a recirculating aquaculture system with 12 growing units, mechanical and biological water treatment units and four aquaponic units. Three plants densities were used (59, 48 and 39plants/m 2). A fish stocking density of 136fish/m 3 was used. Plants initial and final biomass was taken and a series of periodic measurements were made. Chlorophyll a, b and carotenoids, ash and dry matter were determined from spinach leaf. The plant biomass gain registered good values and the quality of final plant products, given by the chlorophyll a, b, carotenoids and dry matter content were in the optimal variation interval, comparing to market spinach. Significant differences (p<0.05) between variants were observed. In the present research work, we demonstrated that significant differences (p<0.05) were recorded in terms of growth performance between the three experimental variants and that the quality of spinach growth in an integrated aquaponic system with rainbow trout is similar to that of the market spinach.
Comparison of total nutrient recovery in aquaponics and conventional aquaculture systems
Open Agriculture, 2021
Introduction More eco-friendly aquaculture technology is required to reduce environmental pollution which has become a major issue in aquaculture industries in the last few decades. Aquaponics system is a culture technology to solve this waste issue. Thus, this study aimed at comparing growth performances, feed utilization efficiency, and nutrient recovery in aquaponics and conventional aquaculture system. Materials and methods Twenty-four juveniles of Nile tilapia (Oreochromis niloticus) weighing 1.12 ± 0.1 g were cultured in either aquaponics systems or conventional aquaculture systems for 30 days. Each system had three culture systems as replicates. The fish were fed the same amount with a commercial pellet three times a day. Results The result showed that the Nile tilapia reared in the aquaponics system had a significantly higher specific growth rate than that of fish reared in the conventional system, 7.5 and 6.3% BW/day, respectively. Similarly, the feed utilization efficiency...
Aquaponics (AP) is a semi-closed system of food production that combines aquaculture and hydroponics and represents a new agricultural system integrating producers and consumers. The aim of this study was to test the effect of stocking densities (APL, 2.5 kg m-3 ; APH, 4.6 kg m-3) on water quality, growth performance of the European Carp (Cyprinus car-pio L.), and yield of leafy vegetables (catalogna, lettuce, and Swiss Chard) in a low-technology AP pilot system compared to a hydroponic cultivation. The AP daily consumption of water due to evapotranspiration was not different among treatments with an average value of 8.2 L d-1 , equal to 1.37% of the total water content of the system. Dissolved oxygen was significantly (p < 0.05) different among treatments with the lowest median value recorded with the highest stocking density of fish (5.6 mg L-1) and the highest median value in the hydroponic control (8.7 mg L-1). Marketable yield of the vegetables was significantly different among treatments with the highest production in the hydroponic control for catalogna (1.2 kg m-2) and in the APL treatment for Swiss Chard (5.3 kg m-2). The yield of lettuce did not differ significantly between hydroponic control and APL system (4.0 kg m-2 on average). The lowest production of vegetables was obtained in the APH system. The final weight (515 g vs. 413 g for APL and APH, respectively), specific growth rate (0.79% d-1 vs. 0.68% d-1), and feed conversion (1.55 vs. 1.86) of European Carp decreased when stocking density increased, whereas total yield of biomass was higher in the APH system (4.45 kg m-3 vs. 6.88 kg m-3). A low mortality (3% on average) was observed in both AP treatments. Overall, the results showed that a low initial stocking density at 2.5 kg m-3 improved the production of European Carp and of leafy vegetables by maintaining a better water quality in the tested AP system.
Journal of Survey in Fisheries Sciences, 2019
Effects of supplementary nutrient in the production of red tilapia (Oreochromis sp) and Lettuce (Lactuca sativa var longifolia) evaluated in a representative water recirculating aquaculture system. The nutrient solution supplemented was 25% level of (L25) nutrient solution as medium used for aquaponic production of lettuce in the NFT system (based on cooper's formula). Thus, a completely randomized experimental design conducted with two treatments in triplicates (Pl 25 and PL 0). Six black rectangular tanks (114 x 86 x 100cm) used as fish culture tanks and each one equipped with three hydroponic troughs. Each tank filled with 640 L of water and aerated continuously with two circular air stones (3 L min-1) during the experiment. The system was efficiently able to remove high rate of total ammonia-nitrogen (TAN) excreted by fish during the experiment. The fish attained marketable size (200g) during a 110-day period. Nutrient supply had not significant effects (p>0.05) on growth of fish during experimental period. The yields (Biomass/tank) of fish in treatments PL25 and Pl 0 were 9.97 and 9.26 kg / tank, respectively. Three times cultivation and harvest of lettuce carried out during the experimental period. At the first harvest, the yield (mean wet weight) of lettuce showed significant (p<0.05) differences between treatments, 1437g and 85 g in treatments PL25 and Pl 0, respectively. In the second and third lettuce harvests, the yield of lettuce did not show any significant differences (p>0.05) and averaged 2112 and 1419 (Second harvest) and 1173 and 807 (Third harvest) for treatments PL25 and PL0, respectively. It was recorded that red tilapia could tolerate 25% of nutrient solution, used for aquaponic production of lettuce, and introduction of nutrient solution to the culture system is necessary to get higher yield of lettuce at initiation of culture system.