IMPLEMENTATION OF AQUAPONICS IN ARTIFICIAL POOLS FOR GROWING CARP AND STURGEON FISH

2021 ◽  
pp. 57-64
Author(s):  
Татьяна Викторовна Степанова ◽  
Павел Олегович Бочаров ◽  
Алёна Витальевна Погорелова
Keyword(s):  
Growth Rate ◽  
Tap Water ◽  
Water Filtration ◽  
Circulating Water ◽  
Plant Seeds ◽  
Fish Breeding ◽  
Sturgeon Fish ◽  
Carp Fish

Показана актуальность проблемы, связанной с особенностями ведения рыболовного хозяйства и растениеводства в условиях неблагоприятного климата, ограниченных территорий. Приведено описание опыта по внедрению аквапоники в схему выращивания осетровых и карповых рыб в искусственных бассейнах с использованием оборотной воды, включающую узлы очистки. В ходе исследования была разработана установка, принцип работы которой может быть использован, как решение проблематики выращивания рыб и растений в искусственно созданных условиях. Определены и описаны узлы фильтрации и очистки воды. Приведены показатели воды, показывающие работоспособность и эффективность установки. Проведено сравнение показателей оборотной воды при проведении опытов по выращиванию карповых и осетровых рыб. Приведены результаты экспериментального исследования скорости роста растений в аквапонной установке с использованием различных субстратов и воды. Выявлены преимущества проращивания семян растений при использовании оборотной воды из рыбоводного бассейна в сравнении с использованием водопроводной воды. We demonstrated the relevance of the problem associated with the difficulty of fishing and plant growing in an unfavorable climate, limited territories. We described the experience of introducing aquaponics into the scheme of growing sturgeon and carp fish in artificial pools using circulating water, including purification units. In the course of the study we developed an installation, the principle of operation of which can be used as a solution to the problem of growing fish and plants in artificially created conditions. As well we identified and described the nodes of water filtration and its purification. We demonstrated indicators of water that show the operability and efficiency of the installation. We also carried out comparison of indicators of circulating water during experiments with growing carp and sturgeon fish. As well we made a comparison of the efficiency and growth rate of plants in an aquaponic installation using various substrates and water. The advantages of germination of plant seeds with the use of circulating water from the fish-breeding basin in comparison with the use of tap water have been revealed.

Some aspects of fishery development of sturgeon hybrids in Russia. Part 1

2021 ◽  
pp. 16-29
Author(s):  
Evgeny Alekseevich Melchenkov ◽  
Aleksey Vladimirovich Myshkin ◽  
Vera Veniaminovna Kalmykova ◽  
Aleksandr Pavlovich Vorob’yov ◽  
Arthur Alekseevich Archibasov
Keyword(s):  
Biological Characteristics ◽  
Russian Sturgeon ◽  
Fish Farms ◽  
Commercial Cultivation ◽  
Recirculating Aquaculture ◽  
Fish Breeding ◽  
Adaptive Capabilities ◽  
Cultivation Technique ◽  
Sturgeon Fish ◽  
Hybrid Forms

With the development of commercial sturgeon breeding, creating hybrid forms of sturgeon fish in order to obtain a larger volume of gourmet marketable products is of increasing interest to fish farmers. The choice of objects for creating hybrid forms for commercial cultivation depends on the conditions and biotechnologies of intensive fish culture. One of the widely used technologies that can several times reduce the time for growing objects and receive viable juveniles and marketable products year-round is the technology using recirculating aquaculture system (RAS). With this cultivation technique, the advantage is given to species with high adaptive capabilities and growth intensity. The most popular objects for hybridization and creation of hybrid forms are beluga, sterlet, Siberian and Russian sturgeon, etc. Beluga is the largest representative of the sturgeon family. It reaches commodity weight (3–5 kg) against the background of natural temperatures within 2–3 years. The Sterlet is a pure freshwater form. It is an excellent object for cross-breeding with other sturgeon species, in particular with beluga to obtain a bester hybrid. The Siberian sturgeon grows most intensively at a temperature of 15–25 °C, however, the growth persists at lower temperatures (1–10 °C). The Russian sturgeon in artificial conditions reaches a marketable weight of 1.5–3.0 kg in the second-third years of cultivation. In order to facilitate the orientation of fish farms, fish farmers engaged in the production of commercial products, the article discusses the creation of hybrid forms of sturgeon fish in domestic and foreign aquaculture, provides their brief fish-breeding and biological characteristics when grown in fish farms of various types. Knowledge of the fish-breeding and biological characteristics of sturgeon fish species hybrids when grown in specific conditions will make it possible to successfully introduce them into the practice of commercial cultivation.

scholarly journals Case Study of the Excessive Vibration of the Medium and High Speed Motors in Circulating Water Filtration System

2020 ◽  
Vol 610 ◽  
pp. 012012
Author(s):  
Liang Yuan ◽  
Jinchuan Bai ◽  
Bo Feng ◽  
Li Wan ◽  
Songping Chen ◽  
...  
Keyword(s):  
High Speed ◽  
Water Filtration ◽  
Circulating Water ◽  
Filtration System

scholarly journals Experiments on ice spikes and a simple growth model

2004 ◽  
Vol 50 (170) ◽  
pp. 375-381 ◽  
Author(s):  
Lesley Hill ◽  
Edward Lozowski ◽  
Russell D. Sampson
Keyword(s):  
Heat Transfer ◽  
Growth Rate ◽  
Heat Transfer Coefficient ◽  
Tap Water ◽  
Mass Conservation ◽  
Time Lapse ◽  
Freezing Process ◽  
Distilled Water ◽  
Scientific Communities ◽  
Simple Growth

AbstractIce-spike observations in nature have sparked much interest in the scientific and non-scientific communities alike, yet most research performed thus far has been largely qualitative. We have conducted a quantitative, systematic laboratory investigation in order to assess theories explaining ice-spike growth and to determine the conditions conducive to it. We observed ice-spike growth using time-lapse digital photography, using two water types in two different containers. We observed that ice spikes occurred much more frequently in distilled water than in tap water. Digital images were analyzed to determine the growth rate of the ice spikes. Water temperature was recorded throughout the freezing process, and the cooling rate was used to estimate a bulk heat transfer coefficient. Finally, a simple model, based on mass conservation, was derived and was found to give useful predictions of ice-spike growth rate.

Growth and Ascorbic Acid Content of the Chick Embryo

Development ◽  
1960 ◽  
Vol 8 (4) ◽  
pp. 527-539
Author(s):  
L. M. Rinaldini
Keyword(s):  
Growth Rate ◽  
Ascorbic Acid ◽  
Chick Embryo ◽  
Animal Species ◽  
Ascorbic Acid Content ◽  
The Other ◽  
Ascorbic Acid Concentration ◽  
Plant Seeds ◽  
Hen’S Egg ◽  
The One

Ascorbic acid (ASA) is actively synthesized by germinating plant seeds (see Mapson, 1953), and by the embryos of various animal species (refs. in Needham, 1942). Hauge & Garrick (quoted by Needham, 1931) found no ASA in the unincubated hen's egg. This was confirmed by Ray (1934), who showed that the vitamin C content of the chick embryo increases gradually after incubation of the egg. Since the egg is a closed system, it follows that the chick embryo can synthesize its own ASA and that the ASA content of the embryo at any given stage must be the balance between synthesis and utilization. It was, therefore, considered of interest to make daily weighings and ASA estimations throughout development with the more sensitive methods now available in order to examine the possible relations between embryonic weight and ASA content on the one hand, and between growth rate and ascorbic acid concentration on the other.

scholarly journals PENINGKATAN PRODUKSI BIOMASSA SIDAT (Anguilla bicolor) MELALUI PEMANFAATAN FERMENTASI PAKAN DAN TEPUNG CACING TANAH (Lumbricus sp) (Production increase of Anguila Biomass by using food fermentation and earth worms flour)

2017 ◽  
Vol 12 (2) ◽  
pp. 86
Author(s):  
Diana Chilmawati ◽  
Suminto Suminto ◽  
Tristiana Yuniarti
Keyword(s):  
Growth Rate ◽  
Culture Media ◽  
Tap Water ◽  
Initial Density ◽  
Feed Utilization ◽  
Average Weight ◽  
Protein Levels ◽  
Randomized Design ◽  
Production Increase ◽  
Treatment Dosage

ABSTRAK Sidat (Anguilla bicolor) merupakan jenis ikan yang pertumbuhan lambat, karena kemampuan daya cerna dan efisiensi pemanfaatan pakan sidat rendah. Salah satu usaha untuk mempercepat laju pertumbuhannya yaitu dengan memfermentasikan pakan buatan dan penambahan tepung cacing (Lumbricus sp.) untuk memperbaiki kandungan nutrisi pakan sehingga pertumbuhan sidat akan meningkat. Penelitian ini bertujuan untuk mengkaji pengaruh dan  menentukan kombinasi fermentasi pakan buatan dan penambahan tepung cacing tanah yang memberikan pertumbuhan, efisiensi pakan, dan kelulushidupan sidat (A. bicolor) terbaik. Elver sidat yang digunakan adalah 320 ekor dengan berat rata-rata 15±1,2 g yang dibudidayakan dalam enam belas akuarium berukuran 80 l yang diisi 40 L air dan diaerasi.  Kepadatan awal 20 ekor/akuarium. Pergantian air dilakukan setiap hari 10% dari total air dan dilakukan pemberian pakan 5% dari biomassa sidat dengan frekuensi pemberian pakan 3 kali sehari, pakan yang diberikan mempunyai kadar protein >50%. Pola rancangan yang digunakan adalah Rancangan Acak Lengkap (RAL) dengan 4 perlakuan dan 4 ulangan. Perlakuan yang diberikan adalah A, B, C, dan D masing-masing ditambahkan dengan tepung cacing tanah 0%, 5%, 10%, dan 15% dari total pakan yang diberikan dalam pakan buatan yang telah difermentasi. Variabel yang diukur adalah PER, SGR, EPP, FCR, dan SR. Hasil penelitian menunjukkan bahwa fermentasi pakan buatan dan penambahan tepung cacing tanah dalam pakan berbentuk pasta berpengaruh nyata (p<0,05) terhadap pertumbuhan (RGR) ,efisiensi pakan (EPP) dan rasio konversi pakan (FCR) namun tidak berpengaruh nyata terhadap kelulushidupan (SR) sidat (A. bicolor) dan kombinasi fermentasi pakan buatan dan penambahan tepung cacing tanah dengan dosis 5% (perlakuan B) memberikan pertumbuhan, efisiensi pakan, dan rasio konversi pakan sidat (A. bicolor) terbaik. Kualitas air pada media pemeliharaan masih pada kondisi layak untuk budidaya sidat. Kata kunci: Anguilla bicolor, fermentasi pakan, tepung cacing tanah, budidaya  ABSTRACT The elver of Anguilla bicolor is the kind of fish that the late growth, due to low in digestability and inefficiency to the feed utilization. One of the solutions to accelerate the growth rate is by adding earthworm powder (Lumbricus sp.) and the fermented artificial feed to improve feed nutrition content so the increasing growth. The obyective of this research was to know the effect of  fermented artificial feed and the addition of earthworm powder in pasta artificial feed on the best of growth, feed utilization, and survival rate of A. bicolor in the culture. Elvers of 320 individuals  with an average weight of 15 ± 1.2 g were cultivated in sixteen of  the  circular aquarium with 80 L in volume. Every aquarium was added 40 L of tap water and weekly aeration with initial density of 20 individuals/aquarium.  Everyday was changed 10 % of tap water and added the pasta artificial feed 5 % of elver body weight for three time feeding habit per day with protein content of  >50%.  The treatments were designed by using a completely randomized design (CRD) with 4 treatments and 4 replicates.  The culture of treatments A was not added  earthworm powder in the fermented pasta artificial feed. Treatments of B, C, and D were added by earthworm powder of 5 %, 10 %, and 15 % in the fermented pasta artificial feed, respectively.  The variables measured were PER, SGR, EPP, FCR, and SR.  The result showed that the artificial feed with different protein levels highly significant influenced (P<0,05) on the RGR, EPP, and FCR, and there was no significant influences (P>0,05) on the SR of elver.  The treatment B (5 % of earthworm) however showed the best one treatment dosage for elvers growth rate than the other treatments. Water quality in culture media was still in decent condition for the cultivation of eels. Keywords: Anguilla bicolor, feed fermentation, earthworm powder, culture 

Dynamic Wind Pump Circulating Water Heat Recovery Design of QRRS

2011 ◽  
Vol 204-210 ◽  
pp. 1819-1823
Author(s):  
Li Sun ◽  
Guang Wen Zou ◽  
Xue Liang Song
Keyword(s):  
Economic Growth ◽  
Tap Water ◽  
Cooling Water ◽  
Water Source ◽  
Rolling Stock ◽  
Economic Losses ◽  
Circulating Water ◽  
Rapid Economic Growth ◽  
Recovery Design ◽  
Pump House

As the country's rapid economic growth, the contradiction between people and the environment are more and more prominent, and the way which can make economic growth at the cost of the environment is not scientific. This article introduces that there is much industrial surplus heat in the dynamic wind pump house of QRRS (Qiqihar Railway Rolling Stock Co., Ltd) which is directly discharged without any treating, which produces unnecessary energy wasting and economic losses. But now there is the solution—making use of surplus heat generated from air compressor cooling water in dynamic wind pump house to heat bathing water (the water from molding line, furnace transformer and tap-water) with water source heat pump, which can achieve the goal of Energy Conservation & Emission Reduction.

scholarly journals Use of a Biological Tracer to Investigate Microbial Aerosols Generated by Heater-Cooler Units

2020 ◽  
Vol 41 (S1) ◽  
pp. s423-s423
Author(s):  
Ginny Moore ◽  
Simon Parks ◽  
Allan Bennett
Keyword(s):  
Tap Water ◽  
High Volume ◽  
Mycobacterial Infection ◽  
Contaminated Water ◽  
Experimental Conditions ◽  
Circulating Water ◽  
The United Kingdom ◽  
Local Decision ◽  
Local Decision Making ◽  
Time Required

Background: A multinational outbreak of Mycobacterium chimaera endocarditis following cardiac surgery has been attributed to the use of heater-cooler units (HCUs) during cardiopulmonary bypass. It is hypothesized that mycobacteria can be transmitted to the surgical site via the aerosolization of contaminated water from within the unit. In the United Kingdom, M. chimaera infections have been linked to 1 specific make and model of HCU, which was shown to generate microbial aerosols when circulating water. The manufacturer has since modified this HCU and claims that the dispersal of aerosols has now been prevented. M. chimaera is a common contaminant of HCUs, regardless of make, model, and manufacturer. To help inform local decision making, hospitals require evidence that this modified HCU and/or alternative heater-cooler systems can reduce the risk of mycobacterial infection by incorporating design features that prevent the generation of microbial aerosols external to the device. The time required to culture M. chimaera means investigations focusing on naturally or artificially contaminated HCUs are problematic. Instead, specialist aerobiological techniques incorporating a nonpathogenic, aerostable, biological tracer (Bacillus atrophaeus) were used to investigate microbial aerosols generated and released from brand-new and ‘upgraded’ HCUs. Methods: 4 HCUs (A–D), supplied directly by the manufacturers, were filled with filtered tap water, and high numbers of B. atrophaeus (109 CFU/L) were added to the tanks. High-volume cyclone samplers were used to sample the air when each HCU was switched off and during different operational phases. Samplers were operated for 5 minutes and the collecting fluid cultured for B. atrophaeus. The number of colonies was converted to CFU per cubic meter of air. Results: Under controlled experimental conditions, HCU-A released a small but significant level of aerosol during operational phases (eg, cooling) that resulted in increased pressure within the tank. The filler flap was identified as the principal area of aerosol release. The circulation of water within HCU-B and HCU-C was shown to generate an aerosol but, when connected to an ‘aerosol collection set,’ this aerosol was not released. However, it is essential that effective and sufficient vacuum is maintained. There was no aerosol release from HCU-D. Conclusions: A specialist in aerobiology using a biological tracer can determine the level of aerosol released from an HCU and its location. However, transmission of M. chimaera could occur via aerosolization of contaminated water, but it is not the only possible route of infection. The efficacy of recommended decontamination procedures must also be assured.Funding: NoneDisclosures: None

scholarly journals The Effect of Immersion Duration in Thyroxine Hormone on Growth of Snakehead Fish Larvae (Channa striata)

2019 ◽  
Vol 4 (1) ◽  
Author(s):  
Muslim Muslim ◽  
Ade Dwi Sasanti ◽  
Apriana Apriana
Keyword(s):  
Growth Rate ◽  
Fish Larvae ◽  
Fish Larva ◽  
Increase Growth Rate ◽  
Average Value ◽  
Fish Breeding ◽  
Randomized Design ◽  
Channa Striata ◽  
Completely Randomized Design ◽  
Research Show

The aim of this research was to determine the best immertion duration to increase growth rate of snakehead fish larva. The research was conducted in Fish Breeding unit Batanghari Sembilan Indralaya, Kabupaten Ogan Ilir. This research used a Completely Randomized Design (CRD), with five treatments (0, 12, 24, 36, and 48 hours of immertion), with three replications. The parameters observed were growth, survival rate and water quality. The results of  this research show that the highest growth rate found in the 24 hours of treatment  with the average value of 0.17 g of weight and increase in length of 1.90 cm. The best survival contained in treatment of immersion for 36 hours with the average value of 71.67%.

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