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  • Articles  (6)
  • Aquaculture  (6)
  • 1
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    The effects of slurry on larviculture of Rutilus frisii kutum and chienes carp yield and determination of efficient concentration for increasing of production (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25300 | 18721 | 2018-09-08 16:40:33 | 25300 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Rutilus frisii kutum is one of the important fish of Caspian Sea which has significant economical role in the region .The objective of this project is a comparative study on traditional culture of fishes versus slurry. This survey were conducted on nine pound of 1.7 hec triplicate with their treatment with stocking densities of 1.7 million fish larva at Dr yousefpoor center (Affiliated of Shahid Beheshti culture and propagation) at Siakal village , 32 km far from Rasht city in North of Iran, the first treatment considered as control which practice traditionally (using concentrated food plus grinded kilka fish) .In the second treatment for 13 days the pound supplied only by slurry then followed by concentrated fish food only .The tired treatment started with slurry for 13 days and followed by slurry plus concentrated food. The physical and chemical parameters of water, plankton, biometry of fish, growth indices such as daily weight growth (DWG), daily length growth (DLG) as well as specific ratio (SGR) were monitored weekly. The result indicate that net fish production was 1.7 to 2 times higher in slurry than traditional treatment also the survival rate were 1.7 times higher in slurry treatment . The treatment of slurry follow by addition of concentrated food plus slurry showed higher yield camper to others. Slurry with several active substances is more effective and can promote the growth of zooplanktons which is the food of larval stage of rutilus frisi kutum. In second phase of this project the effect of slurry was surveyed on Chinese carp. This experiment was conducted in triplicate with two treatment (one treatment is control which use cow manure plus chemical fertilizer and second treatment was conducted with slurry) and stocked with 2375 N/hec (Silver carp 60%, Big head 15%, common carp 17% and grass carp 8%) at June. In this survey common carp and grass carp were feed with concentrate food and fresh grasses respectively. Chemical factors were measured once for each two week and density of plankton was determined when it was necessarily. Nutritional content of phosphorous, nitrogen, calcium, potassium and magnesium after anaerobic fermentation as well as protein and lipid content with 1.4and 1.9 times respectively were higher in slurry treatment than control. The results showed that survival rate and yield were higher in slurry than control. The increasing percent of yield were 13.5, 2.6, 18.4 and 85.3 in Silver carp, Big head, common carp and grass carp respectively. The survival rate of grass carp was twice higher in slurry treatment than control. Zooplankton abundant in slurry pounds was more but blue- green algae density was less than control. Protein and lipid analysis reviled no significant difference between control and slurry. In general the result indicate that the slurry with higher nutritional content is more effective on the survival and growth rate of fishes and also is more efficient in proliferation of plankton in particular zooplankton.
    Keywords: Aquaculture ; Iran ; Caspian Sea ; Slurry ; Rutilus frisii kutum ; Cow fertilize ; Larviculture ; Carp ; Culture ; Plankton ; SGR ; Zooplanktons ; Silver Carp ; Big head carp ; Common carp ; Grass carp ; Phosphorous ; Nitrogen ; Survival rate ; Protein ; Lipid
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 158
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  • 2
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    The study of establishment of rainbow trout culture and hatchery farms on Zayanderood’s River region in Caharmahal and Bakhtiyari Province (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25620 | 18721 | 2018-10-14 02:36:27 | 25620 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The aim of this study was to find the best location for establishment of rainbow trout culture and hatcheries farms on Zayanderood’s river region in Charmahal and Bakhtiyari province. This survey carried out over ten station along Zayanderood’s river. The result of physical and chemical analysis showd that the annual average of air temperature varied from 9.5oC - 10oC where the pH annual average value were between 7.5 and 8.8. the dissolve oxygen concentration in stations except in rainbow trout farm effluent were above 10 mg/l. the other chemical , pollutant as well as pesticides levels were under the limiting concentration for rainbow trout culture and Hatcheries activity. The plankton survey showed that the Bacillurophyta were the dominant group of phytoplankton where protozoa constituted the most abundant group of zooplankton the Benthic organisms sensitive to pollutant in particular Epirus were dominant group in all stations. In regard to fishes presence in river, five species of Ciprinidae, one species from Balitoridae and one species from salmonidae families were identified. The capacity for development of rainbow trout culture for tow phase period in Zayanderood’s river region with respect to self purification potential (self purification potential were determined from the oxidation of the effluent of the only active trout farm of the river region), minimum of 10 L/s water requirement for production of trout in concrete canal and pond system and 1 L/S water need for production in semi circular closed system were estimated to be 5202 metric tons.
    Keywords: Aquaculture ; Iran ; Caharmahal and Bakhtiyari province ; Positioning ; Rainbow trout ; Self purification ; Culture ; Hatchery ; Survey ; Temperature ; pH ; Dissolved oxygen ; Pollutant ; Plankton ; Bacillurophyta ; Phytoplankton ; Protozoa ; Zooplankton ; Benthic organisms ; Ciprinidae ; Balitoridae ; Salmonidae
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 68
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  • 3
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    Preparation instructions micro-algae cultivate and concentrate it for use in silver carp feed and training necessary (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25467 | 18721 | 2018-09-26 09:41:56 | 25467 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: According to the importance of micro-algae in aquatic feed such as fish in this study have been investigated Preparation of useful algae powder or concentrate for breeding silver carp , their impact on the growth of silver carp , rate per unit area and estimate n economic Development. Different algal species were isolated from hydrothermal fish farms, then were purified and mass culture . The next step microalgae were dried and powdered by spray dryer and were examined the fish feeding on them. During this study, 6 species of chlorophyt( Scenedesmus obliquus, Scenedesmus acuminatus, Chlorella vulgaris, Pediastrum boryanum, Pandorina morum, Ankistrodesmus falcatus) ,3 species of cyanophyta ( Anabaena flosaquae, Oscillatoria agardhi and Spirulina platensis) and 1 species of Bacillariophta ( Cyclotella meneghiniana were isolated from.Green algae and Blue -green algae were cultured in Zaindr medium, diatoms were cultured in Zaindr medium but with water of Anzali logoon and also in F2 medium with artificial sea water and spirulina was cultured in Zarouk medium. Microalgae were cultures then concentrated.Then the impact was examined on fish silver carp 2 to 3 grams. The results showed that Cyclotella has a greater role in the growth of silver carp and Anabaena floes aquae and Spirulina platensis tend to growth less than cyclotella. Scenedesmus obliquus and Scenedesmus acuminatus were respectively next algae that showed the greatest impact on fish growth. Scenedesmus obliquus feed rate was greater than any other algae for Daphnia.
    Keywords: Aquaculture ; Iran ; Silver carp ; Algal concentrate ; Micro-algae ; Scenedesmus obliquus ; Scenedesmus acuminatus ; Chlorella vulgaris ; Pediastrum boryanum ; Pandorina morum ; Ankistrodesmus falcatus ; Spirulina platensis ; Oscillatoria agardhi ; Cyclotella meneghiniana ; Preparation ; Feed
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 73
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  • 4
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    The study and feasibility of Cheshmeh-Ali River and down stream area of Shahid Shah-Charaghy Dam in Damghan for aquaculture development (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25507 | 18721 | 2018-10-05 07:40:08 | 25507 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: This research was conducted to finding of Cheshmeh-Ali and Shahcheraghi-Dam downstream areas potential for developing of aquaculture industry. The present study was conducted based on available information and data from monthly and seasonally sampling including geographical area, margin lands and fluctuations of river water, seasonal climatic changes view point of rainfall, temperature, wet, evaporation, wind velocity, sunshine hours, frost and also chemical and physical parameters of water including temperature, alkalinity, total hardness, chloride, calcium, magnesium, sodium, potassium, organic phosphorous and nitrogen, suspended solids, turbidity, water flow and flood conditions, and in addition phytoplankton and zooplankton communities, macrobenthic invertebrates, fishes, aquatic plants, amphibians, reptiles, birds. Results showed that the upstream and downstream regions of Shahcheraghi dam are not suitable for warm water aquaculture in earthen ponds. But view point of cold-water aquaculture, particularly trout, there are some good situations. Also it can be suggested different culture systems including of race way, octagonal concrete ponds, semi-circulation and circulation methods. But, due to water restrictions in the area, semi-circulation and circulation system is preferred. In ideal conditions can be produced about 1,600 tones of trout, if all the capacity of this area be used for aquaculture. Otherwise, in limited circumstances view point of exploitation possibility of the water, only about 700 tons can be produced. In addition, there were appropriate facilities in spring area of Cheshmehali for tourism industry, that it can be considered as priorities for economic development in the region. Due to the low sensitivity of the ecologically conditions, native or exotic aquatic species rearing in indoor methods can be recommended.
    Keywords: Aquaculture ; Iran ; Semnan Province ; Damghan ; Shahcheraghi Dam ; Cheshmeh-Ali River ; Site selection ; Aquaculture capacity ; Sampling ; Temperature ; Turbidity ; Culture
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 71
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  • 5
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    The study and feasibility of down stream area of Yamchi Dam for aquaculture development in Ardabil Province (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25798 | 18721 | 2018-10-13 09:38:10 | 25798 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The research conducted for finding of aquaculture potential and appropriate areas of Yamchi dam downstream river and estimate of its production in 2010-2012. This research done by using of available information and data obtained from the monthly and seasonally sampling. Results showed that river access routes of left side to right were more suitable. The maximum distance of infrastructure facilities was one kilometer. Climate and weather data suggests that downstream area Yamchi dam was not suitable for warm water species aquaculture, while it was ideal for coldwater aquaculture. Also, physical and chemical results showed that almost all of the factors were suitable for growing trout. Heavy metals amounts were measured in the standard limit and iron, cupper, zinc, lead, chromium, cadmium and nickel had highest values, respectively. Bacillariophyta branch abundance of phytoplankton was dominant as showed suitable water quality. Benthos investigation demonstrated that the aquaculture activities is acceptable. In ichthyology studies identified 5 species Cyprinidae and 1 species Nemacheilidae family. Investigation of available underground wells and geophysical studies showed that alluvium area is made up from two parts of clayey surface ground and underground with good permeability and the lower part is affected from the upper part. In areas where both part of the alluvium formed there is a water layer about 20 to 30 meters thick as it is possible to build wells. But in areas without lower part faced with unreliable surface water layer that affected from river flows. Totally, varius method suggested for trout culture include of race way, octagonal pond and semi-recircultaion. In the present condition of Yamchi river the amount of trout production is predicted at least 65 ton by race way to maximum 1750 ton by semi-recircultaion method. Whiles, if 2 cubic meters of water from Yamchi dam outlet allocated to aquaculture can be predicted at least 580 ton by race way to maximum 4000 ton by semi-recircultaion method.
    Keywords: Aquaculture ; Iran ; Ardbil ; Yamchi dam ; Balakhli chai ; Feasibility ; Aquaculture potential ; Bacillariophyta ; Cyprinidae ; Nemacheilidae
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 126
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  • 6
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    Investigating on the possibility of increasing production in the Vahdat’s Dam in Eest Azarbaijan-Iran (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: The Lake Vahdat’s dam ( Kordkandi reservoir ) is located in 75 kilometers eastern of Tabriz in the East of Azerbaijan province With 37°59’ and 46°55’of latitude and attitude ,respectively. The purpose of the Dam is, storage of 6 million m3 of Ojan chai river for aquaculture use in the region. This study was carried out to investigate the possibility of increasing production in the Vahdat’s Dam and some biotic and abiotic factors of lake, such as physico-chemical properties of water, planktons, bentics, icthiology and characteristics of lake's bed were focused. Due to the area of the lake and proximity of the stations to each other, the entrance and estuary of the river as one station and lake as the second station were designated. In the case of phytoplankton, 42 genera were identified from 5 phylom, with 59% Cyanophyta and 21.5% for chlorophylls. For zooplankton, the highest frequency and variety related to the Rotatoria were 50.9% in the spring , which fed by fish and their larvae due to Omega-3 fatty acide. After Rotatoria, Ciliaphora were the most frequent. For Bentics, two sampling steps were carried out in the winter of 2007 and spring of 2008. The high biomass of Tubificidae was showed 0.034 gr ) 84.35/ m3)and 0.42 gr (143.7 /m2) in the winter of 2007 and spring of 2008, respectively. For Ictiology study, the high percentage frequency of fish related to Carassius auratus 42% and Hypophthalmichthys molitrix 38%. The biodiversity of fishes in the lake were confirmed by 12.5 % Alburnus hohenackeri , 87.5 % Carassius gibelio, Carassius auratus, Cyprinus carpio, Hemiculter leucisculus, Hypophthalmichthys molitrix, Hypophthalmichthys nobilis and Ctenopharyngodon idella. One of the most important environmental factors for aquaculture is temperature condition.Now, warm water fish were farmed in the behind of the Dam. The optimal temperature for these fish should be 15-30 ° C. According to the synoptic station of Bostanabad, the temperature of the study area of the Wahdat’s Dam is more than 15 ° C in the four months of the year (from June to September) which is suitable for aquaculture of Cyprinidae. The ice freeze days of the Bostanabad is about 124.6 days , anually. Therefore, the production of warm water fish has been faced with extreme temperature limitation in this lake and only in the short time of the year (mid-spring to end of summer) favorble condition exist for warm water fish farming. Based on the average area of the lake, the production capacity of Cilver Carp and Big head is estimated to be 2.34 and 1.73 tons,respectively.Therefore, assuming of average weight ( 15-20 gr) of fingerlings, 10000 and 7500 number of fingerling shoud be needed for silver carp and big head,repectively.accurding to decresing of variety of bentices founa,increasing of carp production or any other bentic feeder species is needed to manually feeding.In addition to the favorable chemical conditions of water for aquaculture and due to the limited volume of water during summer and suitable temprature of water in spring and fall can farm the fish in the top of the dam. In this regard (HDPEG) cages was established with 750 m3 and 800-1000 number of fish per cge ( 60% cilver carp, 20% big head, 20% carp)with 4.5 ton potential of production. The suitable dimensions of cage are 25-30 diameter, 5 height.There are ten cages fed by artificial food and natural production. Of course there is tourism potential opportunity which can think about that in this area.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Carassius auratus ; Hypophthalmichthys molitrix ; Carassius auratus ; Cyprinus carpio ; Hemiculter leucisculus ; Aquaculture
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 52pp.
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