scholarly journals Coupled Aquaponics Systems

2019 ◽  
pp. 163-199 ◽  
Author(s):  
Harry W. Palm ◽  
Ulrich Knaus ◽  
Samuel Appelbaum ◽  
Sebastian M. Strauch ◽  
Benz Kotzen
Keyword(s):  
System Design ◽  
Uv Light ◽  
Total Yield ◽  
Microbial Control ◽  
Economic Benefits ◽  
Fish Feed ◽  
Main Task ◽  
Fish Production ◽  
Multivariate System ◽  
Plant Cultivation

AbstractCoupled aquaponics is the archetype form of aquaponics. The technical complexity increases with the scale of production and required water treatment, e.g. filtration, UV light for microbial control, automatic controlled feeding, computerization and biosecurity. Upscaling is realized through multiunit systems that allow staggered fish production, parallel cultivation of different plants and application of several hydroponic subsystems. The main task of coupled aquaponics is the purification of aquaculture process water through integration of plants which add economic benefits when selecting suitable species like herbs, medicinal plants or ornamentals. Thus, coupled aquaponics with closed water recirculation systems has a particular role to fulfil.Under fully closed recirculation of nutrient enriched water, the symbiotic community of fish, plants and bacteria can result in higher yields compared with stand-alone fish production and/or plant cultivation. Fish and plant choices are highly diverse and only limited by water quality parameters, strongly influenced by fish feed, the plant cultivation area and component ratios that are often not ideal. Carps, tilapia and catfish are most commonly used, though more sensitive fish species and crayfish have been applied. Polyponics and additional fertilizers are methods to improve plant quality in the case of growth deficiencies, boosting plant production and increasing total yield.The main advantages of coupled aquaponics are in the most efficient use of resources such as feed for nutrient input, phosphorous, water and energy as well as in an increase of fish welfare. The multivariate system design approach allows coupled aquaponics to be installed in all geographic regions, from the high latitudes to arid and desert regions, with specific adaptation to the local environmental conditions. This chapter provides an overview of the historical development, general system design, upscaling, saline and brackish water systems, fish and plant choices as well as management issues of coupled aquaponics especially in Europe.

Design and Implementation of Railcar Management System Based on SSH

2013 ◽  
Vol 416-417 ◽  
pp. 1489-1494
Author(s):  
Long Cheng ◽  
Wei Ge ◽  
Bin Xue
Keyword(s):  
System Design ◽  
Design Process ◽  
Management System ◽  
Main Task ◽  
Positive Role ◽  
Design And Implementation ◽  
Management Efficiency ◽  
Development Framework ◽  
Function Module ◽  
Program Version

As the main means of transport, Railcar performs main task of railway equipment repairing department. For managing railcar information better, upgrading the version of the DMI program version, basic data version, revealing data version of GYK on railcar, the paper develops railcar management system which is based on the B/S mode of J2EE lightweight development framework Struts-Spring-Hibernate (SSH) . This paper introduces the system design process and every function module in detail. Result proves that railcar management system improves the management efficiency of railcar, consists with the characteristics of the railcar and plays a positive role in the safety of railcar.

scholarly journals Comparative evaluation of economic benefits of adopters and non-adopters of improved fish production technologies in Oyo State, Nigeria

2020 ◽  
Vol 44 (2) ◽  
pp. 230-247
Author(s):  
S. S Ashley-Dejo ◽  
O. J. Olaoye ◽  
O. A. Adelaja
Keyword(s):  
Comparative Evaluation ◽  
Simple Random Sampling ◽  
Structured Interview ◽  
Economic Benefits ◽  
Primary Data ◽  
Cost Ratio ◽  
Fish Production ◽  
Gross Margin ◽  
Significant Difference ◽  
Production Technologies

This study assessed the Data were analyzed using descriptive statistics, budgetary analysis profitability ratios and inferential statistics. The study revealed that a Significant level of profit obtained from the study is evidence that adopters had more profit than non-adopters. comparative evaluation of economic benefits of adopters and nonadopters of improved fish production technologies in Oyo State, Nigeria. Primary data were collected with the aid of structured interview schedule administered to 222 active fish farmers using purposive and simple random sampling procedure. dopters of improved fish production technologies earned mean revenue of N4,873,521.29 with gross margin of N2,376,616.36 while non-adopters earned N3,347,719.08 with gross margin of N1,432,805.00. The results showed Benefit Cost Ratio (1.69 and 1.49), Rate of Return on Investment (0.69 and 0.49), Gross Revenue ratio (0.59 and 0.67), Expenses Structure Ratio (0.15 and 0.17) and Net Profit Margin (0.41 and 0.33) for both the adopters and non-adopters. There was a significant association between adoption of improved technologies and sex, educational level, occupation and marital status. Also, there was a significant relationship between adoption of improved technology and age, years of experience and house hold size. There was a significant difference between the profit level of adopters and non-adopters of improved technologies.

scholarly journals Foliar Applications of Protein Hydrolysate, Plant and Seaweed Extracts Increase Yield but Differentially Modulate Fruit Quality of Greenhouse Tomato

HortScience ◽  
2017 ◽  
Vol 52 (9) ◽  
pp. 1214-1220 ◽  
Author(s):  
Giuseppe Colla ◽  
Mariateresa Cardarelli ◽  
Paolo Bonini ◽  
Youssef Rouphael
Keyword(s):  
Antioxidant Activities ◽  
Protein Hydrolysate ◽  
Total Yield ◽  
Economic Benefits ◽  
Soluble Solids ◽  
Total Production ◽  
Marketable Yield ◽  
Soil Culture ◽  
Yield Performance ◽  
Greenhouse Tomato

The current research aimed 1) at evaluating the effects of three biostimulants (legume-derived protein hydrolysate, PH; plant and seaweed extract, PE and SWE) on yield performance and nutritional quality, mineral profiling, antioxidant activities, lycopene, total phenols and ascorbic acid of greenhouse tomato (Solanum lycopersicum L.) under soil culture and 2) to assess the economic profitability of biostimulant applications. Plants were sprayed four times during the growing cycle with a solution containing 1, 3, and 3 mL·L−1 of PE, SWE, and PH, respectively. Foliar applications of biostimulants improved the early and total marketable yield of fresh tomato. The increase of total yield by PE, SWE, and PH was 11.7%, 6.6% and 7.0%, respectively, in comparison with untreated plants. Legume-derived PH increased lycopene, total soluble solids, and K and Mg contents, thereby increasing the nutritional value of the fruits. The applications of SWE, and to a lesser degree PH, enhanced the Ca concentration in the fruit tissue. Our findings indicated that the three tested biostimulants, although they increased the total production cost, improved the nutrient status and yield performance of the crop to a level resulting in net economic benefits.

scholarly journals Analysis of catches data collection system at Fish Landing Base of Dumai

DEPIK ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 125-129
Author(s):  
Ratu Sari Mardiah ◽  
Sri Yenica Roza ◽  
Edy Miswar
Keyword(s):  
Data Collection ◽  
Literature Review ◽  
System Design ◽  
Fish Distribution ◽  
Fishing Gear ◽  
Fish Production ◽  
Collection System ◽  
Data Collection System ◽  
Customer Data ◽  
Catch Data

Data collection system in Fish Landing Base of Dumai was traditionally. Data written manually using books and collected by agents. This fact illustrates the weakness of the catch data collection system that occours. The effect is low data accuracy and requires a longer time in reporting. Data collection system based on technology will facilitate the process and important to do. The purpose of this study was to design a data collection system for fish catches landed at Fish Landing Base of Dumai. The research was conducted in February-June 2020 in Dumai city. The method used observation, interviews and literature review. Data analysis is used the process of analyzing data, literature review, analysis of existing systems, analysis of new systems and system design using data flow diagrams (DFD), entity relationship diagrams (ERD) and HIPO. System design starts from input, output and database design. The data design inputted is fishermen data, fishing gear, fish production and price of day, fish distribution, customer data and data employees. The output data are reports of user data, fishing gear specifications, fish production and fish distribution. The database is structured and presented using a flow chart. A technology-based of catch data collection system designed to improve the efficiency of the presentation of the reports needed for agencies.Keywords:Fish LandingDFDReportAgencies

scholarly journals Status of adoption of improved fish production technology in Rupandehi, Nepal

2018 ◽  
Vol 6 (4) ◽  
pp. 302-307
Author(s):  
Sudip Neupane ◽  
Kamala Gharti
Keyword(s):  
Information And Communication Technologies ◽  
Production Technology ◽  
Fish Farming ◽  
Sampling Procedure ◽  
Study Data ◽  
Farm Income ◽  
Fish Feed ◽  
Fish Production ◽  
Sources Of Information ◽  
Production Technologies

Aquaculture plays an important role to increase farm income and hence alleviate widespread poverty in the country. Fish is considered as the principal source of animal protein. The research was conducted to assess the status of adoption of improved fish production technologies available in the Rupandehi, Nepal. The research was designed to ascertain the socio-demographic characteristics of the farmers, determine available technologies on fish production, determine awareness and adoption of the available technologies and identify the major problems faced by farmers in using improved fish production technologies. Purposive sampling procedure was used to select 100 respondents for the study. Data were analyzed using frequency count, percentages, standard deviation and indexing. The result shows that average age of the respondents was 39.8 years. Eighty percent respondents had post-secondary school certificate. Major sources of information of fish farming were trainings and information and communication technologies. Average pond size of respondents was 0.8 ha. Most of the respondents were aware of the technologies and adopted them. Indexing showed that High cost of fish feed was ranked as the major problem followed by high cost of fingerlings and inadequate capital in using improved fish production technology.

scholarly journals PROSPEK USAHA PEMBUATAN PAKAN IKAN DENGAN TAMBAHAN Azolla microphylla DI DESA TEGAL REJO KECAMATAN BELITANG KABUPATEN OKU TIMUR

2016 ◽  
Vol 2 (01) ◽  
pp. 1-9
Author(s):  
Munsiarum
Keyword(s):  
Production Cost ◽  
Fish Meal ◽  
Production Costs ◽  
Fish Feed ◽  
Selling Price ◽  
Fish Production ◽  
Azolla Microphylla ◽  
Pellet Production ◽  
Feed Pellet ◽  
Research Criteria

The objectives of this research are: (1) To know the production of fish feed (pellet) with additional Azolla microphylla in Tegal Rejo Village Belitang Sub-District, OKU Timur Regency, (2) Analyze the income on fish pellet production business with additional Azolla microphylla in Desa Tegal Rejo Belitang Sub-District, OKU Timur Regency, (3) Analyzing the development of fish meal business (pellet) with additional Azolla microphylla in Tegal Rejo Village Belitang Sub-District, OKU Timur Regency. This research was conducted in Tegal Rejo Village of OKU Timur Regency. The research has been conducted in Febuary 2015 until it is completed by purposive or purposive method, considering that in Tegal Rejo Village, OKU Timur Regency is one of the villages where there is a business of home fish production and the area has technical, economical and Ecological in the implementation of fish production business (home industry) and enough in the research criteria. This study found that in 2014 the business actors produce 9,790 kg / year with the price of Rp 5000 / kg by giving revenue of Rp 48,950,000 with production cost Rp 7,425,000, thus giving income amounting to Rp -23,475,000. In 2015 the business of making fish feed produces 7,150 kg / year with the selling price of Rp 6,500 / kg. Receipts obtained by business actors amounted to Rp 46,475,000, with the use of production costs of Rp 26,193,250, thus earning revenue of Rp 20,281,750. In 2016 the business of making fish feed with additional azollamicrophylla producing 7,920kg / year with the selling price of Rp 7.000 / kg then the revenue is Rp 55.440.000, the use of production cost of Rp 30.324.000 then the income is Rp 25.116.000 and the making business Fish feed with additional Azolla microphylla in Tegal Rejo Village Belitang District, OKU Timur Regency is feasible to be developed. By fulfilling the criteria of NPV value Rp 16.867.875, IRR value of 31.86%., And the value of Net B / C obtained 1.5.

scholarly journals Pelatihan pembuatan pupuk bokasi dari limbah kotoran ayam untuk meningkatkan kualitas air media budidaya lele Dumbo di Kelurahan Mentangor, Kecamatan Tenayan Raya, Kotamadya Pekanbaru Provinsi Riau

2020 ◽  
Vol 2 ◽  
pp. 184-191
Author(s):  
Mulyadi Mulyadi ◽  
Iesje Lukistyowati ◽  
Niken Ayu Pamukas ◽  
Adelina Adelina
Keyword(s):  
Community Service ◽  
Fish Farming ◽  
Chicken Manure ◽  
Fish Feed ◽  
Fish Production ◽  
Fish Food ◽  
Operational Costs ◽  
Service Activities ◽  
Farmer Groups

Chicken manure is an organic material that is abundant in Mentangor Village which has been used as fertilizer when fertilizing ponds, however the continuous use of fertilizers can reduce the quality of the bottom soil and pond water. One of the technological innovations to improve the quality of chicken manure is fermentation using EM4 to produce bokashi fertilizer. Bokashi fertilizer can increase the abundance of phytoplankton and zooplankton which are useful as natural fish food so that they can reduce the use of artificial feed, which in turn can reduce the operational costs of fish farming. Community service activities are carried out for the purpose of innovating knowledge and skills of fish farmers regarding techniques for making bokashi fertilizer from chicken manure and techniques for making fish feed in the form of pellets to increase cultivated fish production. This activity is carried out by lecturing, discussion and practice methods, which involve fish cultivator groups and Kukerta students. The results of community service activities show the high enthusiasm of farmers towards the activities carried out, resulting in increased knowledge, insight and skills of farmer groups. Thus, fish farming activities can be carried out by farmers by reducing operational costs for pond management and provision of feed so as to produce high fish production and increase the income and welfare of farmer groups.

scholarly journals Economic Performance of Clarias gariepinus Juveniles Fed Separately with Factory and Farm-Made Diets

2019 ◽  
pp. 1-11
Author(s):  
Raymond Odey Ajang ◽  
Ettah Akpang Ivon ◽  
Christopher Bassey Ndome ◽  
Elvis Monfung Ayim ◽  
Akaninyene Paul Joseph
Keyword(s):  
Growth Rate ◽  
Economic Performance ◽  
Specific Growth ◽  
Clarias Gariepinus ◽  
Economic Benefits ◽  
Feed Consumption ◽  
Fish Feed ◽  
Commercial Fish ◽  
Water Parameters ◽  
Treatment Groups

Economic performance of using Coppens (commercial fish feed) and locally formulated feeds for Clarias gariepinus culture was studied. Forty juveniles averaging a total length of 9.15 ± 0.17cm and weight of 20.00 ± 2.58g were used and fed twice daily at 3% of their body weight. The weight gain (WG), growth rate (GR) and specific growth rate (SGR) varied significantly (p<0.05), while mean growth rate (MGR) varied insignificantly between treatment groups (p>0.05). Water parameters were at the required level. Cost of experimental feed per kilogram was highest in Coppens (₦733.33 ($2.156853)/kg) but lowest for chicken offal based diet (COBD) (₦267.00 ($0.785294)/kg). Feed consumption was higher for Coppens group (41650.00g ± 315.34) but lowest for COBD group (38276.00g ± 432.97). Cost of feeding (FC) was lower for COBD group (₦ 10219.69 ($30.057912) ±115.60) but higher in shrimp based diet (SBD) group (₦ 30,543.19 ($89.832912) ± 231.25). The ICA was higher in fish fed Coppens (₦ 1933.33 ($5.686265) ± 0.00) but lower for COBD group (₦1467.00 ($4.314706) ± 0.00). The NPV was higher in fish fed Coppens (₦ 440998.26 ($1297.053706) ±11636.93), but lower in COBD group (₦ 132916.16 ($390.929882) ± 3297.24). The PI was highest in Coppens group (₦14.44 ($0.042471) ± 0.35) but lowest in COBD group (₦ 13.01 ($0.038265) ± 0.43). The GP was higher in Coppens group (₦439064.93 ($1291.367441) ± 11636.93) but lower in COBD group (₦131449.16 ($386.615176) ± 3297.24). The IC was higher in Coppens group (₦228.10 ($0.670882) ± 6.02) but lower in COBD group (₦90.61 ($0.266500) ± 2.25). The BCR was higher in fish fed coppens (1.78±0.04) but lowest in COBD group (0.71±0.01). Feed consumed, FC, ICA, NPV, PI, GP and IC varied significantly (p<0.05), while BCR varied insignificantly (p>0.05) between treatment group. The SBD and COBD were as effective as Coppens in terms of growth performance and economic benefits. More researches should be carried out on the use of locally formulated feeds in aquaculture.

scholarly journals Replacement of fish meal using pig manure as protein source for Nile tilapia culture

2020 ◽  
Vol 2 (2) ◽  
pp. 12-17
Author(s):  
Buncha Tongmee ◽  
Niwooti Whangchai ◽  
Sudaporn Tongsiri ◽  
Yuwalee Unpaprom
Keyword(s):  
Value Chain ◽  
Nile Tilapia ◽  
Fish Meal ◽  
Experimental Studies ◽  
Protein Digestibility ◽  
Economic Benefits ◽  
Raw Material ◽  
Pig Manure ◽  
Fish Feed ◽  
The Cost

The cost of fish feed is a significant constraint to freshwater fish farming in Asia. In the aquaculture value chain, feed is a responsible factor and accounts for nearly 75% of the total cost of fish production in many countries. Therefore, this study attempts to focus the feasibility of using pig manure fermentation to formulate feed pellets to culture the tilapia fish in the cement pond, along with the cultured using ready-made feed containing the residue from the manure fermentation at different ratios. Accordingly, the experimental studies were approached by two types of experiments, namely, experiment 1 (focused on the nutrients in pig manure collected from an anaerobic system farm), and experiment 2 (studied the appropriate level of pig manure to be used as a raw material for fish feeding). The five months’ fermentation of pig manure contains 17.09% protein, which is the highest amount of nutrition source. Digestate manure was estimated; other primary macronutrients, including nitrogen, phosphorus, and potassium, were 2.73, 0.55 and 1.22 %, respectively. Also, a considerable amount of essential micronutrients, for example, copper, manganese and zinc, were found in the digestate. Nile tilapia were grown at the cement ponds for 120 days. The maximum verified dry matter and protein digestibility in tilapia were attained for diets containing 10 % percent pig manure at 89.28 ± 4.09 and 56.64 ± 1.43 (p> 0.05), respectively. In this study experimental results indicated that fish meal consisting of 15% manure was found to be the most acceptable substitute source of protein for tilapia production. This implies that the cost of fish meal production using fermented pig manure can be significantly lowered, gain higher profit and provide significant economic benefits to farmers.

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