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Morrison, John R., Steven R. Fox, and Wilmer A. Rogers. "Control of an Infestation of a Fish Leech (Myzobdella lugubris) on Catfishes in Tanks and Earthen Ponds." Journal of Aquatic Animal Health 5, no. 2 (1993): 110–14. http://dx.doi.org/10.1577/1548-8667(1993)005<0110:coaioa>2.3.co;2.
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DAS, RAKHI, MD SHARIFUL ISLAM, and KHAN KAMAL UDDIN AHMED. "Polyculture potentials of Galda (Macrobrachium rosenbergii) with Heteropneustes fossilis and Clarias batrachus in South-western coastal ghers of Bangladesh." Bangladesh Journal of Fisheries 32, no. 1 (2020): 29–38. http://dx.doi.org/10.52168/bjf.2020.32.04.
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Prawn (Macrobrachium rosenbergii) culture is socially more acceptable, technically and economically viable and sustainable. The freshwater catfishes Heteropneustes fossilis (shing) and Clarias batrachus (magur) adapt well to hypoxic water bodies and high stocking densities as well. So, shing and magur may be a good candidate to culture with prawn in ponds/ghers to save the farmers from losing their investment in case of shrimp mortality and getting additional income from fish. With this view, this study was conducted to evaluate the feasibility of polyculture with three treatments each with three replications. Stocking density of shing was variable i.e., 200nos/decimal in T1, 300nos/decimal in T2 and 400 nos/decimal in T3. On the other hand, stocking density of magur and prawn juveniles was 50 and 30 nos/decimal respectably for all treatments. The experimental ghers were treated with salt (NaCl) (150g/decimal), potasium permanganate (5g/decimal) along with lime (125 kg/ha). After stocking fish were fed using floating nursery feed containing 32%, protein and 7% lipid at the rate of 10-2% for shing and magur nursing, floating oil coated grower feed (27% protein and 6% lipid) at the rate of 6-2% for shing and magur grow out and prawn grower (30% protein and 7% lipid) at the rate of 6-2.5% of estimated fish and prawn biomass. At least 10% of stocked catfish and galda were sampled fortnightly using cast net. Physico-chemical parameters of the experimental ghers water were monitored at weekly. After six months of culture the highest growth performance (47.0 g) and survival (19.94%) for shing obtained from T3. Whereas the average growth of shing was recorded 37.02 and 41.14g; growth of magur 99.21g and 99.51g and growth of galda 69.74 and 70.19 for Treatment T1 and T2 respectively. Except ammonia and iron content the other observed parameters of ghers water found congenial for fish health. The value of Benefit-Cost Ratio (BCR) was 1.4 that seems to be profitable and feasible of this polyculture practice.
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Hossain, Md Alamgir, Md Motaher Hossain, Md Golam Rasul, and Mohammad Abu Jafor Bapary. "Public health and hygienic condition of retailers at fish markets in Sylhet Sadar of Bangladesh." Brazilian Journal of Biological Sciences 6, no. 12 (2019): 251–61. http://dx.doi.org/10.21472/bjbs.061223.
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The hygienic and sanitary conditions of majority of the retail fish markets are very poor and unhealthy that may have an impact on fish retailers. The present study was conducted in two retail fish markets located in Kajirbazar and Bondorbazar, in Sadar Sylhet, to assess the hygiene and sanitary condition of fish retailers. Information was collected through questionnaire interview and participatory rural appraisal (PRA) from the retailers and other value chain stakeholders. It was found that about 82% of fish retailers were permanent in these retail markets. The retailers are mainly involved in selling various species of fishes such as carps, catfishes, tilapia, koi, hilsa, shrimp and other small indigenous fishes. The sources of these fishes are mainly of nearby haors, river and ponds. The retailers get fishes from various suppliers and also collected from producers. The income level of fish retailers is relatively low although they are trying to improve their socio-economic conditions. Besides, about 9% of the retailers do not have any formal education whereas 70% and 21% have their education in primary and secondary level, respectively. Although the majority of the retailers were found literate, however, their knowledge on public health was seemed to be very poor. Due to lack of proper knowledge on public health, they are frequently affected by various diseases such as common cold, diarrhea, lesion, fever, skin disease and so on. Particularly, 48% of the fish retailers are affected by the lesion on hands, and 31% and 27% of retailers have been affected by the lesion between fingers or toes, respectively. About 20% of the retailers do not have adequate knowledge on fish quality or benefit of using ice in fish preservation in retail markets. Considering all together, the present study revealed that the retailers operated fish markets are ill-managed, unhygienic and unsatisfactory. The lack of proper fish preservation facilities, poor water supply and unplanned infrastructures are generally regarded as a noticeable problem in the retail markets. In addition, the lack of retailer’s education, consciousness about fish quality, lack of training on hygienic and sanitary conditions are seemed to be involved in spoiling or deteriorating fish quality before reaching to the consumers. Therefore, the proper education and training on hygienic and sanitary conditions as well as sufficient knowledge on maintaining fish quality is required for retailers involved in fish retailing in the markets. It can be concluded that the improvement of relevant facilities of fish markets and proper supervision by respective authorities can ensure the better public health for retailers and safe fish food for consumers.
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Das, Partha Sarathi, M. Mahfujul Haque, M. Mehedi Alam, Shamima Akter, and M. Ruhul Amin. "An understanding on the feasibility of aquaponics in intensive aquaculture pond." Research in Agriculture Livestock and Fisheries 2, no. 1 (2015): 143–50. http://dx.doi.org/10.3329/ralf.v2i1.23046.
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The study was conducted in a peri-urban village named, Panchpy under Gafargaon upazila of Mymensingh district with stinging catfish (Heteropneustes fossilis ) and carps ponds to produce aquaponics vegetable kolmi (water spinach, Ipomoea aquatica ) towards using waste substances of intensive stinging catfish ponds. Aquaponic plant (water spinach, Ipomoea aquatica ) was grown in floating trays in the selected ponds. The water quality parameters including, temperature, pH, dissolved oxygen, nitrite and ammonia were measured during study period.The level of ammonia was higher in catfish pond compared to carps pond water. Inversely, the dissolved oxygen content of catfish pond water was lower than that of carps pond. In the stinging catfish pond, the mean value (± SE) of plant length, weight, number of branches and leaves were recorded at 27.67 ± 1.76, 62.67 ± 2.03, 13.00 ± 1.15 and 55.33 ± 3.18, respectively. The corresponding values 19.33 ± 1.45, 46.67 ± 1.86, 9.33 ± 1.45 and 43.00 ± 2.88, respectively in carps pond, were significantly lower than that of catfish pond. Overall the percent weight gain of kolmi was higher in catfish pond. A positive correlation was found between the length and weight of kolmi produced in both catfish and carp ponds, however R2 value of that relationship was higher for catfish pond due to higher level of available waste nutrients in water. This indicates that the potential of aquaponics research and development in intensively feed catfish aquaculture ponds at the farmer level that can feed the growing population in both rural and urban areas of Bangladesh.Res. Agric., Livest. Fish.2(1): 143-150, April 2015
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Martin, J. F. "The Use of Sodium Carbonate Peroxyhydrate to Treat Off-Flavor in Commercial Catfish Ponds." Water Science and Technology 25, no. 2 (1992): 315–21. http://dx.doi.org/10.2166/wst.1992.0067.
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Sodium carbonate peroxyhydrate (SCP) was applied to seven commercial catfish ponds in Mississippi to study the effects of treatment on fish flavor and pond ecology. The seven ponds were treated on alternate days in the morning with two doses of SCP at 55 kg hectare−1 (average depth 1-1.6 m). In three of the ponds, a potent 2-methylisoborneol (MIB) producing planktonic Oscillatoria chalybea-like species that was initially present was absent from the water column after treatment. In addition, the fish from two of these ponds were judged on-flavor 7 to 10 days after treatment. The off-flavor chemicals in three other ponds were diminished when measured seven days after treatment and fish were harvested from two of these ponds 10-14 days after treatment. The fish from the other two ponds were harvested 21 days after treatment. In the sixth pond, the predominant algal species was a 2-methylisoborneol producing O. chalybea-like species at 380 cells ml−1 and the treatment was ineffective. The treatment was most successful when off-flavor was less than two months duration and where application of the chemical was accomplished uniformly over the entire pond surface.
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Sangma, Phanindra, Md Abdul Wahab, Shahroz Mahean Haque, and Sanjib Kumar Mondal. "Integrated cage-cum-pond culture system with walking catfish (Clarias batrachus) in cages and tilapia (Oreochromis niloticus) in open ponds." Research in Agriculture Livestock and Fisheries 4, no. 3 (2017): 221–27. http://dx.doi.org/10.3329/ralf.v4i3.35101.
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An experiment was conducted for a period of 97 days at the Fisheries Field Laboratory Complex, Bangladesh Agricultural University, Mymensingh to determine the potential of the cage-cum-pond culture of walking catfish, as well as to assess the economic and environmental benefits of this system. The experiment had two treatments in triplicate. One treatment comprised walking catfish in cage and tilapia in open pond, and the other treatment comprised both walking catfish and tilapia stocked together in open ponds. Ponds of both treatments were stocked with walking catfish and tilapia at a stocking density of 10,000 and 20,000 ha-1, respectively. Fishes in both treatments were fed with commercial pelleted feed (26% crude protein) twice daily at the rate of 10% body weight of walking catfish. All ponds were fertilized with urea and TSP at a rate of 50 kgha-1 bi-weekly. Survival of catfish was very low in both treatments ranging from 8.33 to 21.33%. Specific growth rate of catfish was significantly higher (P<0.021) in treatment-2 than in treatment-1 with a value of 2.42 and 1.69 g fish-1d-1, respectively. The net yield for catfish of treatment-1 and 2 were 49.67 and 43.45 kgha-1, respectively and there was no significant difference between the treatments. The survival rate of tilapia was 65.17 and 71.17% with daily weight gain of 2.31 and 2.22g fish-1 in treatment-1 and 2, respectively. Net yield were 817.00 and 790.63 kg ha-1, respectively and there were no significant difference in net yield of tilapia between treatments. Net profit obtained from integrated-cage-cum pond culture (Tk. 24,518 ha-197d-1) was higher than that of open pond (Tk 22,685 ha-197d-1).Res. Agric. Livest. Fish.4(3): 221-227, December 2017
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Yu, Tao, Fei Zhong, Dong Xu, et al. "Water Quality and Growth Simulation of Channel Catfish, Ictalurus Punctatus, in a Recirculating Aquaculture System Combined with Subsurface Flow Wetland." Advanced Materials Research 343-344 (September 2011): 1109–16. http://dx.doi.org/10.4028/www.scientific.net/amr.343-344.1109.
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Purifying efficiency and culture performance in a recirculating aquaculture system (RAS) combined with subsurface flow wetland (SFW) were investigated in this paper. The results showed that the wetland effectively removed total suspended solids (78.6%), chemical oxygen demand (49.2%), 5-day biochemical oxygen demand (70.4%), total ammonia (53.7%) and nitrite (64.7%) from the aquaculture effluents at a hydraulic loading rate of 344 mm/d. The channel catfish (Ictalurus punctatus) with initial length of 18.97±2.92 cm were reared for 223 days in three recycling ponds at different stocking densities (0.055, 0.109, and 0.164 kg/m3) and a control pond at stocking density 0.055 kg/m3. Fish were fed to satiation twice daily with a commercial diet and the amount fed was measured to determine feed efficiency (FE). In the recycling ponds, fish growth appeared to be negatively correlated with stocking density, in which total weight gain of fish ranged from 374.9% to 886.7%. Fish in the control pond had low survival rate (61.1%) and total weight gain (465.2%), comparing with the recycling pond which had same stocking density (0.055 kg/m3). Feed efficiency (0.34) of the control pond was also significantly lower than that of the 0.055 kg/m3 treatment (0.96). A logistic model of was employed to simulate the growth of channel catfish. The estimated parameters and predicted results showed that the growth rate of channel catfish reared in recycling pond is significantly higher than that in static pond.
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Abdel-Hay, Abdel-Hay, Monira Elsawy, Wasseem Emam, Wael Eltras, and Radi Mohamed. "Haematological and biochemical blood profile of African catfish (Clarias gariepinus) cultured in ponds of different water depth and fed sinking versus floating diet." Biotehnologija u stocarstvu 37, no. 2 (2021): 117–26. http://dx.doi.org/10.2298/bah2102117a.
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This study contributes data on haematological and biochemical parameters of African catfish, Clarias gariepinus. It employed a 3 ? 2 factorial design with three ponds of different water depth (0.5, 1 and 1.5 m) and two types of feed (floating and sinking). Twelve earthen ponds (1 m x 2 m) were stocked with 16 fingerlings catfish each (mean weight ~100g) and their blood parameters were monitored over 12 weeks. Differences in hematological parameters related to water depth were mostly significant, and better results were recorded in fish reared in shallower water ponds. Feed type showed improved hematological parameters with using of sinking diet. Most biochemical parameters showed significant differences in pond waters depth and feed type with better results coincided with rearing fish in shallower water depth and with sinking feed. Conclusively, culturing Catfish in shallow ponds (0.5 m) and use of sinking feed improve physiological response and health condition.
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Le, Thinh Xuan, and Hien Xuan Dang. "MODELING OF PLANKTON DEVELOPMENT PROCESSES IN THE PANGASIUS (PANGASIANODON HYPOPHTHALMUS) PRODUCTION POND IN VIETNAM." Vietnam Journal of Science and Technology 58, no. 3A (2020): 59. http://dx.doi.org/10.15625/2525-2518/58/3a/14252.
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Pangasius (Pangasianodon hypophthalmus) is a popular food in many countries around the world as well as Vietnam, at the same time, Pangasius (catfish) also brings great economic benefits from the exportation. However, unplanned catfish farming leads to environmental degradation. Fish farming is more susceptible to disease and consumes more water. Feed for fish is only partially used, the rest is released into the environment. The industrial feeds with high nutrient content, especially those rich in nitrogen (N) and phosphorous (P), are the strongest contributors to the water index. Thus, within high volume and high pollution levels of wastes from catfish pond which has had a great impact on the water environment, negatively affecting the catfish farming and the community. Modeling is a solution that helps to better control the biological processes in the pond, optimizes feed supply and water use. Modeling has many advantages compares to the real research because the cost is too expensive; requires too long time; does not affect to production or endangers to persons and equipment. In some cases, it is not possible to do experiments on real systems. Therefore, the application of the modelling is a suitable way to identify and control biological processes in catfish ponds. This research will study the plankton development processes taking place in catfish ponds by modeling using Matlab software to simulate the nutrition and development processes of fish in catfish ponds. These equations were solved by the fourth-order Runge-Kutta method and coded in the Matlab programming language.As a result, the plankton development processes of pangasius pond is simulated includes (green algae, cyanobacteria, diatoms), (the ratio of nitrogen content in green algae, cyanobacteria, diatoms), (the ratio of phosphorus content in green algae, cyanobacteria, diatoms) at different temperatures 28, 30oC.
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Tun, Myo Min. "Experiment on growth response and Feed Conversion Ratio (FCR) of fishes by feeding BR Sludge from distillery spent wash at distillery factory in Yangon, Myanmar." Journal of Aquaculture & Marine Biology 8, no. 6 (2019): 207–10. http://dx.doi.org/10.15406/jamb.2019.08.00263.
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The two freshwater fishes, the catfish Pangasius pangasius (Hamilton, 1822) and the catla fish Catla catla (Hamilton, 1822)were experimented in small culture ponds for growth response and feed conversion ratio during the study period from October 2018 to January 2019. The Pangasius pangasius fish growth rates of test and control ponds were almost equal. The control growth rates of Catla catla fish were higher than the test pond. Among these fishes, the fish Catla catla was the soft bottom habitat and they preferred mud bottom sediments. Among them, the growth rates of fish Catla catla was less than other species. The FCR values of the test ponds are 12.7 of Pangasius pangasius fish and 21.5 of Catla catla fish. The FCR values of the control ponds are 14.9 of Pangasius pangasius fish and 23.8 of Catla catla fish. In the present study, the results of FCR values are very useful for BR Sludge from Distillery Spent Wash. The feeding ratio (FCR) of test ponds is less than control ponds that is very good useful for these culture fishes.
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Olopade, Olaniyi Alaba, Mercy Gbaramana, and Nenibarini Zabbey. "Estimation of Length-Weight Relationship and Proximate Composition of Catfish (Clarias gariepinus Burchell, 1822) from Two Different Culture Facilities." Turkish Journal of Agriculture - Food Science and Technology 3, no. 7 (2015): 566. http://dx.doi.org/10.24925/turjaf.v3i7.566-570.323.
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This study was carried out to determine and compare the proximate composition and length weight relationship of C. gariepinus from two culture systems (earthen and concrete ponds). The fish samples were collected from three fish farms with same cultural condition in different areas of Obio-akpor Local Government Area of Rivers State, Nigeria. Result on the length- weight relationship revealed that C.gariepinus reared in concrete tank had a total length of 15.50- 49.00cm with a mean of 32.71cm and weight of 150-625g, while total length of C. gariepinus reared in the earthen pond ranged from 19.90-58.0cm with a mean of 39.8cm and weight of 195-825g. The T- test shows that the total length of earthen pond were significantly higher than the concrete tank and the weight in the earthen pond was significantly higher than the concrete tank. Parameters of proximate composition analysed were moisture, protein, lipid, carbohydrate, ash and fiber from the fish flesh. Protein content showed a significantly higher in the earthen ponds than the concrete tanks. Ash contents varied from 1.5±1.66-7.4±0.67% in the concrete tanks and were significantly higher than the earthen ponds which ranged from 3.1±0.94-4.5±2.11%. Lipid was significantly higher in earthen ponds than concrete tanks. Generally, the two culture systems have a significant influence on length–weight relationship and nutritional value of C. gariepinus. However, C. gariepinus reared in concrete tank had a heavier body weight than earthen pond and also C. gariepinus reared in earthen pond had highest nutritive values than the concrete tank.
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Otieno, PA, DO Owiti, and PO Onyango. "Growth rate of african catfish (Clarias gariepinus) and plankton diversity in ponds under organic and inorganic fertilization." African Journal of Food, Agriculture, Nutrition and Development 21, no. 02 (2021): 17545–59. http://dx.doi.org/10.18697/ajfand.97.18845.
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Aquaculture offers the opportunity for safeguarding local and global food security in the face of declining capture fisheries. However, the form of aquaculture that is commonly practiced in Kenya is characterized by the use of agrochemicals such as fertilizers that negatively impact biodiversity especially when effluents from fish ponds drain into water bodies. This study aimed to determine differences in the growth rate of Clarias gariepinus, an important aquaculture fish in Kenya, to assess plankton diversity, and to identify phytoplankton species associated with pollution under organic and inorganic fertilization regimens using chicken manure, Diammonium phosphate, and urea, respectively. Average growth rate calculated per day was higher in the organically-fertilized ponds at 0.06 cm/day, followed by inorganically-fertilized ponds at 0.05cm/day and then, the control at 0.04 cm/day. Average weight gain was higher in organically-fertilized ponds at 0.08 g/day followed by ponds fertilized with inorganic fertilizer at 0.07 g/day and the control, at 0.06g/day. There were significant differences in growth rate across fertilization regimens (length: F2, 264= 24.06, p = 0.0399; weight: F2, 264 = 20.89, p = 0. 0457). Specifically, although differences in growth rate of fish in organically and inorganically fertilized ponds were not significant, fish in fertilized ponds were on average, longer and weighed more than those in the control pond. Jaccard’s similarity index for phytoplankton was highest (0.38) between organically-fertilized ponds and control but lowest (0.25) between inorganically-fertilized ponds and control. Use of chicken manure produced the highest diversity of zooplankton (Shannon-Weiner’s H in organically-fertilized pond = 1.886; inorganic = 1.044, and control = 0.935). The use of DAP and urea produced the highest proportion of phytoplankton species associated with pollution. These results do not support the commonly reported notion that ponds fertilized using inorganic fertilizers are more productive. Findings suggest that the use of inorganic fertilizers may threaten biodiversity in aquatic ecosystems through the production of toxic algae.
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Maharani, Nur Annisa, and Pinjung Nawang Sari. "Penerapan Aquaponic Sebagai Teknologi Tepat Guna Pengolahan Limbah Cair Kolam Ikan di Dusun Kergan, Tirtomulyo, Kretek, Bantul, Yogyakarta." Jurnal Pengabdian kepada Masyarakat (Indonesian Journal of Community Engagement) 1, no. 2 (2016): 172–82. http://dx.doi.org/10.22146/jpkm.10603.
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Kergan sub-village is located in the Tirtomulyo Village, Kretek District, Bantul Regency, on the process into a tourist village. Cultivation of carp and catfish become a favored activity in the village because most of the citizen has carp and catfish ponds for those will be used as priority to become a Tourism Village of Carp. However, the fish pond waste has become a problem. During this time the waste just being dumped into the environment, that cause a contamination on water wells. Therefore, solution to treat this fish pond waste in the village is necessary to be solved by community service activities. This community service activities concluded that making aquaponic is one of the solution. Public education, consultation and mentoring are the most effective 3 methods in solving the problems that exist in the village. The benefits of those activities that provide new knowledge about waste treatment pond fish and provide new skills in making aquaponics.
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Tran, Hanh Thi Hong, Tran Thi Hong Le, Hanh Vu Bich Dang, and Thanh Thi Duong. "APPLICATION GIS TO ESTABLISH THE MONITORING NETWORK OF WATER QUALITY BASA CATFISH POND AT AN GIANG." Science and Technology Development Journal 12, no. 2 (2009): 97–110. http://dx.doi.org/10.32508/stdj.v12i2.2210.
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Nowadays, with developing all over country of aquaculture, basa catfish in the Mekong River delta, included An Giang province, has kept important position and contributed to economic development in the area. However, aquaculture activities has faced with environmental risk and aquacultures diseases that cause quality of fish pond water has usually pollution and reducing total of basa fish yeild. The water and sludge samples were conducted for six months in order to carry out the current status of water quality of fish ponds at My Hoa Hung commune at Long Xuyen city. Based on analysis results, proposing establishment dada base and monitoring network of surface water by using GIS that were conducted to improve surface water quality and identify the risks that may cause damage the environmental of basa fish ponds in this reserach.
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Nmeregini, Daniel Chinomso, Gideon Chinedu Onuekwusi, and Felix Chibueze Nzeakor. "Constraints to Women Involvement in Fish Production in Anambra State, Nigeria." Journal of Agricultural Extension 25, no. 1 (2021): 75–84. http://dx.doi.org/10.4314/jae.v25i1.6s.
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The study analysed constraints to women involvement in fish farming and processing in Anambra State Nigeria. Multi-stage sampling procedure was employed in selecting 90 women fish farmers. Data were analysed using percentage and mean as well as ordinary least square regression. The study revealed that the women mostly used concrete pond (65.6%), the majority (70.0%) have between 1 and 3 ponds. Catfish was mainly cultured by the women (86.7%). The foremost constraints faced by the women in fish farming were inadequate capital ( = 3.31), inadequate land for expansion ( = 3.27), and high cost of fish pond establishment ( = 3.23). The coefficient of inadequate capital (-1.503) was significant at 1%, while the coefficients of inadequate land for expansion (-1.286), pre-occupation with other household chores (1.245), dominance by spouses (1.601) and high cost of fish pond establishment (- 1.768) were significant at 5% significant level. Providing low interest loans to active and registered women fish farmers, revisiting and amending the 1999 land reform, encouraging women to form formidable cooperative societies, among others were recommended by the study.
 Key words: Concrete pond, women, fish farming
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Pshenichniy, Ju L. "SOURCES FOR INVESTIGATION FISHERY IN DUBNO IN XVI—XVIII cc." Archaeology and Early History of Ukraine 30, no. 1 (2019): 280–85. http://dx.doi.org/10.37445/adiu.2019.01.22.
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Fishery took important place in economic and social development of Dubno in XVI—XVIII cc. There were two large ponds around Dubno in that period. Also they are well-known from historical sources as Surmycky pond and Ivansky pond. Fishery tools, which were found during archeological investigations in Dubno testify about methods of fishing, which were used by the population of the town. They are led and clay sinkers for the nets, iron fishing spears and spud, copper tackle. The fish remains from Dubno castle and Spaso-Preobrazhensky monastery belonging to eight fish species (pike, roach, indeterminate carp fish, sturgeon, common rudd, common bream, european catfish, european perch). These two prosperous centers had obviously the largest sizes of cached fishes.
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Martin, J. F., and I. H. Suffet. "Chemical Etiologies of Off-Flavor in Channel Catfish Aquaculture." Water Science and Technology 25, no. 2 (1992): 73–79. http://dx.doi.org/10.2166/wst.1992.0037.
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Thirteen ponds used for commercial culture of channel catfish were analyzed bimonthly during the summer and episodes of off-flavor occurred in nine of these ponds. Several compounds were isolated from the water and catfish that correlated with the onset and severity of off-flavor. The compounds most frequently isolated from water, producing off-flavored fish, were β-cyclocitral and 2-methylisobornepl (MIB). A dehydration product of MIB, 2-methyl-2-bornene, was found in several fish samples and two water samples. Geosmin and 2-methylenebornane were rarely isolated, β-cyclocitral was rarely isolated from the fish although high concentrations were isolated from water samples collected from ponds containing off-flavored fish. These compounds were not found in ponds producing on-flavored catfish.
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Fakorede, Cecilia Nireti, Evelyn Nwadinkpa Fatokun, Blessing Philip-Kantiok, Chinwe Juliana Iwu, and Ishmael Festus Jaja. "Bacteriological Quality and Antibiotics' Susceptibility Profile of Small-medium Scale Commercial Fish farms in Nigeria." Open Agriculture Journal 14, no. 1 (2020): 198–208. http://dx.doi.org/10.2174/1874331502014010198.
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Background: Fish currently provide 6.7% of all proteins consumed by humans globally; nevertheless, the aquaculture system has been linked to fish, environmental contamination and disease outbreak. The aim of this study was to determine the bacteriological quality and the antibiotic resistance profile of bacteria from water samples of pond stocked with Tilapia and Catfish in Ile-Ife, Osun State, Nigeria. Objective: To isolate, identify and characterise heterotrophic bacteria and test for the antibiogram of detected Coliforms. Methods: Water samples were collected from ponds stocked with Tilapia and Catfish, and tested for total heterotrophic and coliform bacteria as well as the antibiogram. The susceptibility of the isolates was tested using the Kirby-Bauer disc diffusion method on Mueller Hinton agar. Results: A total of 40 isolates were recovered from the water samples, of which 5 species were Gram positive bacteria representing two genera, and 35 species were Gram negative bacteria representing four genera. The temperature for all ponds ranged from 25°C to 28°C. The mean bacterial count varied from 1.9×104 to 5.4×104 CFU/ml per fish pond. All isolates were 100% resistant to ceftazidime, cefuroxime and augmentin. More resistance to cefixime (80%) and gentamicin (73.3%) and nitrofurantoin (66.7%) was also recorded. However, only 16.6% and 8.3% of the isolates were resistant to ciprofloxacin and ofloxacin, respectively. The multiple antimicrobial resistance index (MARI) ranged from 0.5 to 0.9. The water physicochemical parameters (temperature and pH) and the type of bacteria detected in all pond types did not differ significantly. Conclusion: Fish pond is a reservoir of multi-drug resistant bacteria that could serve as environmental source of drug resistance gene transfer. This calls for effective monitoring and assessment as well as management devices for the protection of community and environmental health.
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Nahdhlia, Badi'ah Lailun, Ahmad Syauqi, and Hasan Zayadi. "Isolasi, Keanekaragaman Koloni dan Karakterisasi Bakteri Metanogenik pada Sedimen Kolam Ikan Lele (Clarias sp.)." BIOSAINTROPIS (BIOSCIENCE-TROPIC) 6, no. 1 (2020): 1–9. http://dx.doi.org/10.33474/e-jbst.v6i1.274.
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Bakteri metanogenik adalah bakteri penghasil gas metan. Bakteri ini digolongkan sebagai Archaebacteria yang secara alami hidup di rawa-rawa, tanah becek, kolam dan dalam alat pencernaan hewan besar. Sedimen pada kolam ikan mengandung elemen nutrien yang terbentuk dari aktivitas makhluk hidup seperti sisa pakan dan kotoran ikan sehingga menjadi habitat yang sangat mendukung pertumbuhan mikroorganisme. Penelitian bertujuan untuk mengetahui adanya bakteri metanogenik dan nilai indeks keanekaragaman pada sedimen kolam ikan lele (Clarias sp.) serta karakter bakteri metanogenik. Pengambilan sampel berasal dari kolam ikan lele (Clarias sp.) di Desa Bendosewu, Kecamatan Talun, Kabupaten Blitar. Metode yang digunakan yaitu teknik isolasi anaerobik menggunakan media thioglikolat, morfologi sel dengan pewarnaan gram dan fisiologi dengan MR-VP. Hasil yang didapatkan adalah dalam sedimen kolam ikan lele (Clarias sp.) terdapat bakteri metanogenik dengan nilai indeks keanekaragaman koloni kolam A lebih tinggi dibanding kolam B. Keduanya menunjukkan keanekaragaman rendah. 
 Kata kunci : bakteri, metanogenik, sedimen.
 ABSTRACT
 Methanogenic bacteria are methane gas producing methane. This bacteria are classified as Archaebacteria which naturally live in swamps, muddy soil, ponds and in the digestive organs of large animals. Sediments in fish ponds contain nutrient elements which are formed from the activity of living things such as food waste and fish feces making it a habitat that strongly supports the growth of microorganisms. The study aimed to determine the presence of methanogenic bacteria and the diversity index value in catfish (Clarias sp.) pond sediments and the characteristics of methanogenic bacteria. Sampling came from catfish (Clarias sp.) ponds in Bendosewu village, Talun sub-district, Blitar district. The method used is anaerobic isolation technique using thioglycolate medium, cell morphology with gram staining and physiology with MR-VP. The result obtained were in catfish (Clarias sp.) pond sediments there were methanogenic bacteria with a diversity index of pond A colonies higher than pond B colonies. Both are showing low diversity. 
 Keywords :bacteria, methanogenic, sediment.
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Reza, Shaheed. "Sources of off-flavor in pangasius catfish (Pangasianodon hypophthalmus) ponds." Journal of Aquaculture & Marine Biology 10, no. 3 (2021): 138–44. http://dx.doi.org/10.15406/jamb.2021.10.00315.
Full textAbstract:
With the intensification of aquaculture system, off-flavor in cultured pangasius catfish (Pangasianodon hypophthalmus) has become a problem in Bangladesh, resulting in poor acceptability and reduced market price. Since water quality parameters and sediment have greater implications on fish quality, studies were undertaken to identify potential off-flavor agents by investigating water temperature, dissolved oxygen (DO) pH, phytoplankton diversity and sediment organic carbon in 3 randomly selected ponds of 3upazilain Mymensingh district viz., Sadar, Trishal and Muktagachha. Water temperature and DO was found to be significantly different in ponds of Trishalupazila along with significantly high sediment organic carbon (p<0.05). Correspondingly, the Algal Genus Pollution Index (AGPI) estimated to study the water quality revealed that ponds in this upazila has the highest organic nutrient level (25.33±3.21). These values, along with strong positive correlation of cyanobacteria abundance and water temperature, sediment organic carbonindicate higher risk of off-flavor production in pond water. Adoption of proper management strategies need to taken immediately so that off-flavor producing organisms can be minimized. This will ensure higher acceptability of pangasius catfish produced in this region and safeguard livelihoods of the fish producers.
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Rozumnaya, Lyubov Anatolyevna, Galina Iozepovna Pronina, Alexander Borisovich Petrushin, and Elena Ivanovna Shishanova. "Theoretical and practical aspects of domestication of common catfish (Silurus glanis, L.)." Rybovodstvo i rybnoe hozjajstvo (Fish Breeding and Fisheries), no. 1 (January 1, 2021): 42–56. http://dx.doi.org/10.33920/sel-09-2101-04.
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The article discusses some aspects of the domestication of common catfish (Silurus glanis) in the conditions of cyprinid fish farms. Under the pressure of selection and directed cultivation in pond conditions of carp fish farms, changes in ethological, morphological, and physiological indicators are observed. The variability of the majority of morphological indicators and development indices (8–14%) indicates a high degree of consolidation of the resulting breeding offspring and indicates the completion of the first stage of domestication in the conditions of fish-breeding carp farms. Physiological and biochemical assessment of different age categories of catfish showed low variability of physiological indicators. it Can be assumed that the decrease in the coefficient of variability is a consequence of domestication. Studies of the immunological status have shown its optimal level, which allows us to accept the obtained indicators as indicative standards for evaluating brood flocks and their offspring. There was a significant increase in the body weight of commercial three-year-olds of the 4th breeding generation, compared with the first generation. It is established that the reproduction of catfish planted in carp summer-fallow ponds is more successful than in natural reservoirs, since ponds of this category are often small, well-warmed, which contributes to the rapid maturation of producers and the development of caviar. When growing in pond conditions for 2–3 generations, changes in behavioral reactions were noted — there was a decrease in aggressiveness and the development of conditioned reflexes to the specified food objects. The level of food availability affects the metabolism and maturation period, so along with the use of the natural feed base of the pond, it is recommended to use additional feeding and directed formation of the natural feed base.
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Triyatmo, Bambang, and Namastra Probosunu. "BUDIDAYA TERPADU LELE DUMBO DENGAN TANAMAN ECENG GONDOK (Eichornia crassipes), KANGKUNG AIR (Ipomea aquatica) DAN KAPU-KAPU (Pistia stratiotes)." Jurnal Perikanan Universitas Gadjah Mada 4, no. 2 (2002): 30. http://dx.doi.org/10.22146/jfs.8910.
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Catfish (Clarias gariepinus) was cultured with an aquatic plant, water hyacinth/eceng gondok (Eichornia crassipes), kangkung air (Ipomea aquatica) or kapu-kapu (Pistia stratiotes) in concrete ponds, for 3 months. Catfish cultured without aquatic plant was used as a control. The experiment was carried out to evaluate the survival rate as well as the growth of fish and aquatic plants.The survival rates of catfish cultured with I. aquatica, E. crassipes, and P. stratiotes were 76, 87, and 98%, respectively. In addition the survival rate of catfish cultured without any aquatic plant was 93%. The weight gain of catfish was 14,1-16,2 kg per pond. Whereas, the total weight gains of aquatic plant were 37,0, 27,7 and 7,7 kg per pond for E. crassipes, P. stratiotes, and I. aquatica,. Respectively. Dissolved oxygen, and the concentrations of NH3, NH4+ and PO43- in water with aquatic plants were higher than that of in water without aquatic plant. However, the concentration of CO2 was higher in water with aquatic plant.
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Anggara Trisna Nugraha and Dadang Priyambodo. "Design of Pond Water Turbidity Monitoring System in Arduino-based Catfish Cultivation to Support Sustainable Development Goals 2030 No.9 Industry, Innovation, and Infrastructure." Journal of Electronics, Electromedical Engineering, and Medical Informatics 2, no. 3 (2020): 119–24. http://dx.doi.org/10.35882/jeeemi.v2i3.6.
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Catfish is one of the fishery products favored by the community because of its high protein. So that Catfish is one of the fish that is the center of business for fish farmers. The pond conditions used by Catfish farmers are generally still conventional. So that the maintenance of clean water in ponds is still done manually and even escapes attention. Water conditions will affect the health and productivity of Catfish. In order to achieve the optimum conditions in the third media, a control system consisting of three types of sensors will be used, namely Flowmeter, LDR sensor and LM35 sensor. The flowmeter sensor is used to regulate the flow of water, the LDR sensor functions as a receiver that is used to detect the level of turbidity of water based on how much light enters the water (turbidity). Meanwhile, the LM35 sensor functions to detect the temperature in the media so that the optimum condition for Catfish based on temperature parameters is around 22 - 32 ° C
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Halim, Abdul, and Suslam Pratamaningtyas. "PENERAPAN AQUAPONIK DAN PENGEMBANGAN BUDIDAYA IKAN LELE PADA UNIT USAHA PONDOK PESANTREN KOTA MALANG." Jurnal Layanan Masyarakat (Journal of Public Services) 4, no. 1 (2020): 1. http://dx.doi.org/10.20473/jlm.v4i1.2020.1-7.
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Tarbiyatul Iman Islamic Boarding School (PPTI) located on Jalan Perum Srigading Dalam Kav 11 Malang has a catfish breeding business under the name "Catfish PPTI". The catfish farmers group is a partner in the community partnership program (PKM). The partner group is hoping for good management of fish culture production. The appropriate technology is technology in cultivating fish with a "Bionic" system that combines organic fish farming with organic vegetable plants in limited lands, with the intention of feeding and place efficiency and operational costs. The implementation of PKM in Tarbiyatul Iman Islamic Boarding School (PPTI) begins with coordination with the management. PPTI already has 2 catfish ponds which have been managed as they are as learning media for students. With the existence of this PKM, the number of ponds owned by PPTI has become 7 ponds, plus the installation of aquaponics with a pot system and pipes. There are two aquaponic system models implemented in PPTI, namely the first model where vegetables are grown in pots filled with planting media consisting of gravel / zeolite and husks. Pond water is channeled into plant pots which are arranged on top of a pool and flows out into the pond. While the second model is pond water flowed into PVC pipes, where the pipes are perforated and filled with plants that have been planted in a net pot and the water will be re-inserted into the fish pond. AbstrakPondok Pesantren Tarbiyatul Iman (PPTI) yang berlokasi di Jalan Perum Srigading Dalam Kav 11 Malang mempunyai unit usaha budidya ikan lele dengan nama “Lele PPTI”. Kelompok pembudidaya ikan lele ini merupakan mitra program kemitraan masyarakat (PKM). Kelompok mitra mengharapkan manajemen produksi budidaya ikan yang baik. Teknologi tepat guna tersebut adalah teknologi membudidayakan ikan dengan sistem” Bionic” yaitu menggabungkan budidaya ikan secara organik dengan tanaman sayur organik di lahan terbatas, dengan maksud efisiensi pakan, tempat, serta biaya operasional. Pelaksanaan PKM di Pondok Pesantren Tarbiyatul Iman (PPTI) diawali koordinasi dengan para pengurus. PPTI sudah memiliki 2 buah kolam ikan lele yang selama ini dikelola apa adanya sebagai media pembelajaran bagi santri. Dengan adanya PKM ini, jumlah kolam yang dimiliki PPTI menjadi 7 buah kolam, ditambah dengan instalasi aquaponik sistem pot dan pipa. Ada dua model system aquaponik yang diterapkan, yaitu pertama dimana sayuran ditanam dalam pot yang diisi media tanam yang terdiri dari batu kerikil/zeolite dan sekam. Air kolam dialirkan ke pot-pot tanaman yang disusun di atas kolam ikan dan mengalir keluar kembali masuk ke kolam. Model kedua adalah air kolam dialirkan ke dalam pipa-pipa PVC, pipa-pipa tersebut dilubangi dan diisi tanaman yang telah disemaikan pada net pot dan air akan kembali dimasukkan ke dalam kolam ikan.
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Sasmita, Rochiman, Miarsono Sigit, Adhitya Yoppy Ro Candra, and Achmad Rachman Hidayat. "DERAJAT INFESTASI Trichodina sp. PADA LELE DUMBO (Clarias gariepinus) DI EMPAT KOLAM PEMBUDIDAYAAN DI KABUPATEN SUMENEP." VITEK : Bidang Kedokteran Hewan 9 (November 2, 2020): 10–17. http://dx.doi.org/10.30742/jv.v9i0.61.
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Abstract
 This research was aimed to find out the prevalence and degree of infection Trichodiniasis on the Dumbo catfish (Clarias gariepinus) in four ponds cultivation of Sumenep Regency, East Java. The total of 200 samples of Dumbo catfish were from four cultivation ponds to be examined in the Parasitology laboratory of the Faculty of Veterinary Medicine, Univercity Wijaya Kusuma Surabaya. The examination was carried out by means of scraping mucus as well as taking the gill Lamella and observed under the microscope with 100x and 400x magnification. The results showed that the highest level of Trichodiniasis prevalence was in the cultivation pool C (64%) With the degree of infection 5.62 individual parasites/fishes including the category of severe infections while in the pond cultivation A (28%) With the degree of infection 1.86 individual parasitic/fish, cultivation pool B (30%) With the degree of infection 2.46 individual parasites/fishes and the cultivation pond D (48%) With an infection degree 3.02 individual parasites/fishes including a category of mild infections. So using Uji-T can be known results of cases of Trichodiniasis that attacked Dumbo catfish (clarias gariepinus) on four pools of cultivation in Sumenep Regency, East Java showed a very noticeable difference.
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Singkawijaya, Elgar Balasa, Siti Fadjarajani, and Amar Tiwi Nurohmah. "Potential of Freshwater Fisheries as a Supporting Factor for Minawisata of Tasikmalaya." Jurnal SPATIAL Wahana Komunikasi dan Informasi Geografi 19, no. 2 (2019): 44–51. http://dx.doi.org/10.21009/spatial.192.5.
Full textAbstract:
Cibunigeulis Village, Bungursari District, Tasikmalaya has a huge the potential for freshwater fishery cultivation and minawisata activities. The research objective is to determine the characteristics of the freshwater fisheries sector as a supporting capacity for minawisata activities. The method used in this research is quantitative descriptive method. The results showed the cultivation of fisheries activities have a carrying capacity of ideal nurseries such as ponds, labor, breeding, knowledge and capital. The stages to have a good cultivation are the preparation stage of the pond, fertilizing, spawning, and hatching stage of the eggs become fish larva. The next stages, are the magnification stage, the harvesting stage, the processing stage and marketing stage. If these stages can be managed well it will also produce a good product. The fish are the primary commodity for consumption needs both inside the city and outside the city. Some fish products include, carp, catfish, Nile tilapia fish, tilapia, silver catfish and other fish. in terms of Minawisata activities, the village can be developed for fishing activities, culinary and fisheries exhibitions
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Zuhra, Cut Fatimah, Sovia Lenny Sovia, and Nunuk Priyani Nunuk. "The Implementation of Biofloc Systems in the Catfish Breeding Cooperated with Lele Tamora SME." ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat 4, no. 2 (2019): 115–18. http://dx.doi.org/10.32734/abdimastalenta.v4i2.3551.
Full textAbstract:
This community service aims to provide solutions for fisheries that experience water change problems caused by the lower availability of ground water. The small-medium enterprise (SME) Lele Tamora which is engaged in catfish breeding experiences this problem, such as turbid and bubbly water, which causes mass death of fish seedlings. Therefore, pond fish farming with a modern system integrated by a biofloc system that is supported by the use of microbubbles is introduced to the owner. The basic principle of this system is to utilize bacteria that can release substances that function as adhesives to form biofloc, such as microalgae aggregates, residual pellets, exoskeletons of dead organisms, bacteria, protists, protozoa and others substance with 0.1-2 mm diameter. All of these aggregates can be a source of poison in the pond system or as a competitor for fish to get oxygen. The biofloc system is projected to be able in reducing the toxic content in pond water which automatically reduces fish mortality, and this system can also convert organic waste in ponds into natural food as well as reducing commercial feed. For this purpose, a 1000 liter volume of bioreactor has been constructed to grow biofloc bacterial seeds, 20-liter-capacity of autoclaves to sterilize dissolved oxygen while helping to breed floc-forming aerobic bacteria. This system has been implemented at Lele Tamora SME, and the results showed the changing of water-pond colour from green to brown. Meanwhile, the netting ratio (selection of catfish based on the size of ready-to-sell) increased from 4000 to 8000 individuals.
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Tsafack Takadong, Julie J., Hippolyte T. Mouafo, Linda Manet, et al. "Assessment of the Presence of Total Aflatoxins and Aflatoxin B1 in Fish Farmed in Two Cameroonian Localities." International Journal of Food Science 2020 (September 3, 2020): 1–6. http://dx.doi.org/10.1155/2020/2506812.
Full textAbstract:
This work aimed at assessing the presence of total aflatoxins (AFs) and aflatoxin B1 (AFB1) in fish farmed in two Cameroonian localities and the possible origin of that contamination through analysis of fish feeds as well as water and mud collected from the fish farming ponds. Four fish species (kanga, tilapia, catfish, and carp) were collected from two fish farming sites (Mfou and Batié). Mud and water from the farming ponds of the different species and the fish feeds used in these sites were also collected. The samples (34) were analyzed for their levels of AFs and AFB1 using the competitive ELISA method. The results obtained showed that all fish tissue contained AFs and AFB1. A level of AFs higher than the threshold value recommended by the FDA (20 ppb) was observed in catfish (31.38±0.29 ppb). AFs and AFB1 were presented in fish feeds as well as in muds collected from the farming ponds. Catfish was the fish species which mostly bioaccumulated aflatoxins in their tissue. This study presents the state of art on the mycotoxin contamination of fish farmed in some Cameroonian localities and suggests that attention should be paid to the quality of ingredients used to feed fish.
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Pujiharsono, Herryawan, and Danny Kurnianto. "Mamdani fuzzy inference system for mapping water quality level of biofloc ponds in catfish cultivation." Jurnal Teknologi dan Sistem Komputer 8, no. 2 (2020): 84–88. http://dx.doi.org/10.14710/jtsiskom.8.2.2020.84-88.
Full textAbstract:
The government has launched a program to increase the production of catfish by using biofloc ponds. The biofloc ponds can maintain the quality of water biologically to maximize the growth of fish. However, the level of water quality monitoring is generally only divided into good or bad categories so that it cannot represent the condition of fish growth. Therefore, this study aims to get the level of water quality (0–100 %) using the Mamdani fuzzy inference system (FIS) algorithm based on pH, temperature, and dissolved oxygen (DO). The level of water quality was correlated based on catfish growth conditions. The results showed that the range of values of the water quality level for each condition of catfish growth was 100 % for normal-living fish, 83–99 % for stunted fish growth, and < 83% for threatened fish. The FIS algorithm had 89.92 % of accuracy.
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Schrader, Kevin K., N. P. Dhammika Nanayakkara, Craig S. Tucker, Agnes M. Rimando, Markus Ganzera, and Brian T. Schaneberg. "Novel Derivatives of 9,10-Anthraquinone Are Selective Algicides against the Musty-Odor Cyanobacterium Oscillatoria perornata." Applied and Environmental Microbiology 69, no. 9 (2003): 5319–27. http://dx.doi.org/10.1128/aem.69.9.5319-5327.2003.
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ABSTRACT Musty “off-flavor” in pond-cultured channel catfish (Ictalurus punctatus) costs the catfish production industry in the United States at least $30 million annually. The cyanobacterium Oscillatoria perornata (Skuja) is credited with being the major cause of musty off-flavor in farm-raised catfish in Mississippi. The herbicides diuron and copper sulfate, currently used by catfish producers as algicides to help mitigate musty off-flavor problems, have several drawbacks, including broad-spectrum toxicity towards the entire phytoplankton community that can lead to water quality deterioration and subsequent fish death. By use of microtiter plate bioassays, a novel group of compounds derived from the natural compound 9,10-anthraquinone have been found to be much more selectively toxic towards O. perornata than diuron and copper sulfate. In efficacy studies using limnocorrals placed in catfish production ponds, application rates of 0.3 μM (125 μg/liter) of the most promising anthraquinone derivative, 2-[methylamino-N-(1′-methylethyl)]-9,10-anthraquinone monophosphate (anthraquinone-59), dramatically reduced the abundance of O. perornata and levels of 2-methylisoborneol, the musty compound produced by O. perornata. The abundance of green algae and diatoms increased dramatically 2 days after application of a 0.3 μM concentration of anthraquinone-59 to pond water within the limnocorrals. The half-life of anthraquinone-59 in pond water was determined to be 19 h, making it much less persistent than diuron. Anthraquinone-59 appears to be promising for use as a selective algicide in catfish aquaculture.
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Oluwalola, O. I., and O. A. Fagbenro. "Fatty Acid Composition and Sensory Evaluation of African Catfish, Clarias gariepinus Reared under Different Culture Enclosures." Nigerian Journal of Technological Research 16, no. 2 (2021): 7–11. http://dx.doi.org/10.4314/njtr.v16i2.2.
Full textAbstract:
This study was carried out to determine the fatty acid composition and sensory quality of Clarias gariepinus from different culture enclosures (plastic, sandcrete tanks and earthen ponds), at the Teaching and Research Farm of Department of Fisheries and Aquaculture Technology, Federal University of Technology, Akure, Ondo State, Nigeria. The comparative work was carried out to find out if habitat could influence the nutrient composition of the fish. Standard procedures were used in the analysis of tissue nutrient. Sensory evaluation study revealed differences in taste and texture indices considered for C. gariepinus reared in plastic, sandcrete tanks and earthen ponds (p<0.05). Fatty acid profiles of C. gariepinus were determined using Gas chromatography-mass spectrometry (GC-MS) method. The percentage of saturated and unsaturated fatty acids was higher (49.99%, 23.17%) in earthen pond cultured C. gariepinus than the plastic and sandcrete tanks. The study revealed that C. gariepinus raised in earthen pond possess fatty acid composition and sensory quality advantages over the plastic and sandcrete tanks.
 Keywords: Fatty acids, Sensory evaluation, Culture enclosures, Clarias gariepinus
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Musa, Safina M., Christopher Mulanda Aura, Erick Ochieng Ogello, Reuben Omondi, Harrison Charo-Karisa, and Jonathan Mbonge Munguti. "Haematological Response of African Catfish (Clarias gariepinus Burchell 1822) Fingerlings Exposed to Different Concentrations of Tobacco (Nicotiana tobaccum) Leaf Dust." ISRN Zoology 2013 (September 17, 2013): 1–7. http://dx.doi.org/10.1155/2013/492613.
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The present study set out to investigate the haematological effects of tobacco leaf dust on African catfish, Clarias gariepinus, fingerlings, with a mean weight of 3.01 ± 1.25 g using “static renewal bioassay system” during a 120-hour bioassay exposure period. Water quality parameters such as pH and dissolved oxygen significantly decreased while total alkalinity and conductivity increased significantly in the exposed media, compared to the control test. Leucocytes counts increased significantly while erythrocytes counts decreased significantly with increasing concentration of tobacco dust. Packed cell volume significantly reduced with increase in the concentration of tobacco dust. Haematological examination showed that there was destruction of the erythrocytes production, and the concentration of haemoglobin was much lower in the exposed fish compared to the control depicting an anaemic condition. The results could provide baseline information for the safe limits of using tobacco leaf dust in fish ponds; hence 1.56 g L−1 concentration of tobacco leaf dust was recommended for pond preparation for Clarias gariepinus fingerling stocking. For better survival rates, the fish should only be introduced in the pond after three days of tobacco application.
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Fautama, Fitria Nelda, Ilham Zulfahmi, Muliari Muliari, and Adian Aristia Anas. "Prevalence and Intensity of Ectoparasites on Clarias gariepinus From Aquaculture Pond in Aceh Besar District, Indonesia." Jurnal Biodjati 4, no. 1 (2019): 58–67. http://dx.doi.org/10.15575/biodjati.v4i1.4328.
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Information related to the prevalence and intensity of para-sites in an aquatic environment is crucial as preventive and responsive efforts to manage aquatic resources, especially for fish farming pur-poses. Up to now, information related to the prevalence and intensity of ectoparasites on catfish from aquaculture ponds in Aceh Besar Dis-trict is rare. This study aims to investigate the prevalence, intensity, and dominance of ectoparasites on catfish from aquaculture ponds in Aceh Besar district. The total of 200 catfish from four research stations at Sibreh, Kareung, Lambaro, and Limpok was observed in this study. The ectoparasites observation was focused on the skin, fins, and gill of the catfish. The observation parameter consists of prevalence, in-tensity, domination, length-weight relationship, and condition factor. Identification result showed that there were four types of ectoparasites infect the catfish in the aquaculture ponds in Aceh Besar District i.e Trichodina sp., Gyrodactylus sp., Dactylogyrus sp. and Ichthyopthyri-us multifiliis. Station 3 (Lambaro) had the highest prevalence and in-tensity, which were 64% and 5.87 ectoparasites/fish, respectively. In-fected catfish tended to have a lower weight growth than healthy catfish.
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BUDIATI, TITIK, GULAM RUSUL, WAN NADIAH WAN-ABDULLAH, LI-OON CHUAH, ROSMA AHMAD, and KWAI LIN THONG. "Genetic Relatedness of Salmonella Serovars Isolated from Catfish (Clarias gariepinus) and Tilapia (Tilapia mossambica) Obtained from Wet Markets and Ponds in Penang, Malaysia." Journal of Food Protection 79, no. 4 (2016): 659–65. http://dx.doi.org/10.4315/0362-028x.jfp-15-372.
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ABSTRACT A total of 43 Salmonella enterica isolates belonging to different serovars (Salmonella Albany, Salmonella Agona, Salmonella Corvallis, Salmonella Stanley, Salmonella Typhimurium, Salmonella Mikawasima, and Salmonella Bovis-morbificans) were isolated from catfish (Clarias gariepinus) and tilapia (Tilapia mossambica) obtained from nine wet markets and eight ponds in Penang, Malaysia. Thirteen, 19, and 11 isolates were isolated from 9 of 32 catfish, 14 of 32 tilapia, and 11 of 44 water samples, respectively. Fish reared in ponds were fed chicken offal, spoiled eggs, and commercial fish feed. The genetic relatedness of these Salmonella isolates was determined by random amplified polymorphic DNA PCR (RAPD-PCR) using primer OPC2, repetitive extragenic palindromic PCR (REP-PCR), and pulsed-field gel electrophoresis (PFGE). Composite analysis of the RAPD-PCR, REP-PCR, and PFGE results showed that the Salmonella serovars could be differentiated into six clusters and 15 singletons. RAPD-PCR differentiated the Salmonella isolates into 11 clusters and 10 singletons, while REP-PCR differentiated them into 4 clusters and 1 singleton. PFGE differentiated the Salmonella isolates into seven clusters and seven singletons. The close genetic relationship of Salmonella isolates from catfish or tilapia obtained from different ponds, irrespective of the type of feed given, may be caused by several factors, such as the quality of the water, density of fish, and size of ponds.
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Ishiwu, C. N., A. G. Opara, J. E. Obiegbuna, and P. A. Okeke. "Assessment of growth performance of African catfish (Clariasgariepinus) fed with feed produced from blend of pigeon pea (Cajanuscajan) bambara groundnut (Vignasubterranea) and fish meal." Global Journal of Agricultural Sciences 19 (April 2, 2020): 17–26. http://dx.doi.org/10.4314/gjass.v19i1.3.
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A 3-factor -factorial experiment (2K) was designed to produce fish feeds from mixture of pigeon pea, bambara groundnut and fish meal as major ingredients, while maize, red palm oil, salt and micro nutrient pre-mix were added as minor ingredients. The raw materials were processed into flours. The ingredients were weighed out in various ratios and mixed. The mixture was extruded; sun-dried and packaged and labeled F1-F8 and a commercial feed labeled F9 served as control. The feeds were feed to juvenile Clariasgariepinus kept in 9 separate plastic bowels and fed for 42 days. The forty-five fish of uniform weight and age were grouped into 9 and stocked in the nine artificial ponds, each pond contained five fish. The feeds were analyzed for proximate composition, while the growth performance of the fish was evaluated at the end of the feeding period. Result showed that F3 (20g pigeon pea, 20g Bambara ground nut and 16g fish meal) contains the highest protein (33.14 %) and F1(20g pigeon pea, 30g bambara ground nut and 16g fish meal) the least (23.13 %). F3 exhibited the highest specific growth rate (1.14 %) followed by the F9 (control) which contains 1.09%. The highest weight gain (16 g) was observed in the fish fed the control feed. However, F3 and F4 (20g pigeon pea, 30g bambara ground nut and 18g fish meal) ranked next to the control with respect to growth performance. It is therefore possible to produce quality catfish feed from bend of pigeon pea, Bambara ground nut and fish meal.
 Keywords: catfish, fish feed, bambara groundnut, pigeon pea, fish meal
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Leard, A. Timothy, Bruce A. Wagner, Karen L. Camp, David J. Wise, and Xio Dan Gao. "Seasonal Values of Selected Blood Parameters of Farm-Raised Channel Catfish (Ictalurus Punctatus) in the Mississippi Delta." Journal of Veterinary Diagnostic Investigation 10, no. 4 (1998): 344–49. http://dx.doi.org/10.1177/104063879801000406.
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Hematocrit, sodium, chloride, potassium, calcium, glucose, and pH were measured in whole blood of 1,522 channel catfish collected from 3 commercial food-fish ponds in the Mississippi Delta. Samples were collected from March 1995 to March 1996 to monitor seasonal fluctuations. A total of 10–20 fish were arbitrarily collected with snag lines from each pond on each sample day. The mean monthly hematocrits fluctuated seasonally from a low of 14.5% in midwinter to a high of 25.7% in midsummer (annual = 21%, SE = 0.15). Sodium levels were consistent throughout the year with a mean (SE) of 134 (0.13) mM/liter. Mean chloride values for the year were 120 (0.14) mM/liter but increased to 132 mM/liter in midwinter. By March 1996, the chloride levels had returned to levels observed during spring 1995. Potassium and glucose levels varied throughout the year with means of 4.43 (0.06) mM/liter and 26.9 (0.46) mg/dl, respectively, and coefficients of variation of 51.8% and 63.3%, respectively. Calcium and pH values were fairly stable with means of 1.31 (0.004) mM/liter and 7.13 (0.004), respectively. All parameters except glucose and potassium may be adequately evaluated with a sample size of 25 or less. These data were collected to provide baseline information for ongoing pond health studies.
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LEUNG, CHEONG-KIT, YAO-WEN HUANG, and OSCAR C. PANCORBO. "Bacterial Pathogens and Indicators in Catfish and Pond Environments." Journal of Food Protection 55, no. 6 (1992): 424–27. http://dx.doi.org/10.4315/0362-028x-55.6.424.
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Channel catfish (Ictalurus punctatus) fed a diet containing 26 or 38% protein with restricted and satiety feeding methods were examined for microorganisms on the fish surface and viscera. Water, sediment, and fish samples from the ponds were tested for fecal streptococci, fecal coliforms, Aeromonas hydrophila, and Pseudomonas aeruginosa, while fish samples were also analyzed for presumptive Listeria spp. (count on m-VJ agar) and psychrotrophic bacteria. There were no significant differences (P&lt;0.05) in the fecal streptococci and fecal coliform counts for the water, sediment, and fish visceral samples. However, the aeromonad count for the visceral samples (4.20 log CFU/g wet weight) was significantly higher (P&lt;0.05) than that of the water and sediments (2.40 log CFU/ml and 3.78 log CFU/g wet weight, respectively). Similarly, the P. aeruginosa count for the fish visceral samples was significantly higher (P&lt;0.05) than that of the water and sediments. The mean presumptive Listeria spp. count for the fish visceral samples was 1.99 log CFU/g wet weight. Because of the higher bacterial concentrations in the fish viscera, it was concluded that cross-contamination of fish samples could occur during evisceration. Finally, the feed protein level and feeding method used in the ponds influenced the bacterial concentrations in selected sample types (i.e., water, sediment, fish surface rinse, or fish viscera).
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Hastuti, Sri, and Subandiyono Subandiyono. "Hematological performances of African catfish (Clarias gariepinus) and media water qualities in culture system with bio-filtration pond." Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology 4, no. 2 (2011): 1–5. http://dx.doi.org/10.14710/ijfst.6.2.1-5.
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The aim of This study was to determine the effect of application biofiltration pond on water quality media and fish hematological performance consisting of erythrocytes, leukocytes, hemoglobin, hematocrit and platelets. Two treatments, namely water management systems with and without applied biofiltration pond to the catfish rearing system in the village of Beji, District East Ungaran. Dumbo Catfish Seed 8-10 cm in size were reared on the pond with a density 200 fish/m2. During the rearing of fish fed with pellets by the method of ad satiation, twice a day at noon and at night. Rearing the fish was done until size of consumption. At the end of the rearing carried out measurements of water quality conditions of temperature, pH, dissolved oxygen, carbon dioxide and ammonia, as well as hematological performance consisting of erythrocytes, leukocytes, hematocrit, hemoglobin, hematocrit and platelets. Data were analyzed descriptively. The results showed changes in leukocyte count from 107.57 thousand cells / ul to 92.3 thousand cells / ul. Platelets 42 000 cells / ul to 6000 cells / ul, while the erythrocytes and hematocrit values, each for 1.72 to 1.74 million cells / ul and 7.8 to 9.73 thousand cells / ul, water quality media were improvement, especially on the total ammonia content of 0.92 ppm to 0.14 ppm and dissolved oxygen is 0.08 ppm to 0.5 ppm. From the data can conclude that applied biofiltration pond on catfish farming systems can improve water quality media that support life and growth of fish. Keywords: African catfish, biofiltration pond , hematological performance, water quality managementhttp://ejournal.undip.ac.id/index.php/saintek/article/view/2067
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Ziegenhorn, Randy. "A River Full of Fish: Industrial Catfish Production and the Decline of Commercial Fishing on the Upper Mississippi River." Human Organization 59, no. 2 (2000): 162–68. http://dx.doi.org/10.17730/humo.59.2.q0pg63228w258875.
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This paper explores the decline of commercial fishing on the upper Mississippi River. For much of the 20th century fishing provided work for many in river communities and an important buffer against fluctuations in the regional economy. In the late 1960s the introduction of pond-raised catfish from newly created fish farms in the southern United States created a source of uniform, mild-flavored, and untainted fish that satisfied the preferences of both the food industry and consumers. Demand for river fish, in particular catfish, collapsed. Today fish are plentiful in the Mississippi but low prices offer little incentive to independent fishers. Some fish processors, faced with declining local demand, have stepped up sales of river fish to markets as far away as New York. Other processors have opted not to fight the fish-farming industry and now distribute pond-raised catfish. This paper explores the complex social and economic forces that have reshaped local economies and the ecology of the river itself.
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Darmansah, Aris, Sulistiono, Thomas Nugroho, and Eddy Supriyono. "Pemberdayaan Masyarakat melalui Pengembangan Budi Daya Ikan Lele di Desa Balongan, Indramayu, Jawa Barat." Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat 2, no. 1 (2016): 8. http://dx.doi.org/10.29244/agrokreatif.2.1.8-16.
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Balongan Village is one of coastal area in Indramayu which is potential for aquaculture development. Community development through catfish culture activity in this village had been done for 3 years from December 2011-December 2014. This activity aimed to improve the community skill especially catfish culture using plactic pond. Methods used in this activity was training and empowering. The community was trained about plastic pond construction and fish culture technique. The community participated in first year was 21 people, second year was 26 people, and third year was 13 people. Supporting scheme in this program was one pond sized 5 x 5 m<sup>2 </sup>for one person, including fish larvae (seed) and feed for twice harvesting. There were two principal approaches had been done to empower the catfish culture activity which were technical and participative approach. The success of catfish culture program could be seen from three aspects namely participation, community income, and social modal utilization. Based on the training and empowering results, community had ability to culture and harvest the catfish reared in the plastic pond.
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Enersy, Desi, Bhakti Karyadi, and Endang Widi Winarni. "Studi Komunitas Nekton Di Kawasan Konservasi Kura-Kura Universitas Bengkulu Dan Pengembangan Pembelajaran Berbasis Lingkungan." PENDIPA Journal of Science Education 1, no. 1 (2017): 55–61. http://dx.doi.org/10.33369/pendipa.1.1.55-61.
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This study aims to inventory the type of necton, knowing the structure of the necton community and measuring the critical thinking skills of students of class VII.1 SMPN 1 Ujan Mas Kepahiang. The results showed that the necton obtained from the Taman Pintar pond amounted to 7 species and Pipi Putih Pond totaling 4 species. The necton species in the Taman Pintar pond with the highest KP, KS, and FK values are tin head fish with KP, KR, and FK values respectively 0.102 idv / m2, 75.71% and 83%. While on the Pipi Putih Pond is local catfish species with the value of KP, KR, FK of 0.01 idv / m2, 39.29% and 25%. Then dominance index (H ') in the Taman Pintar pond is 0.61 and C' Pipi Putih pond = 0.76. While the index of diversity of necton species in both ponds also belonged to very low category with H’ value of Taman Pintar Pond = 0.28 and H' of Pipi Putih pond = 0.17. The result of Percentage Of Agreement test showed that environment-based learning tools developed are included in the category highly feasible to be tested. Students’ critical thinking ability on the perpormance aspect shows 33 ,3 % percentage including critically critical criteria and 66,7 % including critical criteria. While Students’ critical thinking ability on the cognitive aspect shows four criteria, that are very critical as 26 %, crittical criteria 40 %, criteria critical enough 27 % and criteria less 7 %
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Fatoki, O. A. ,., O. V. Arowolo, T. O. Oguntoye, G. B. Kabir, and R. I. Kolade. "Determinants of profitability in catfish farming in Ilorin West Local Government Area of Kwara State, Nigeria." Journal of Agriculture, Forestry and the Social Sciences 17, no. 1 (2021): 71–79. http://dx.doi.org/10.4314/joafss.v17i1.8.
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This study analysed the profitability of catfish farming in Ilorin west Local Government Area of Kwara State. Multistage sampling technique was used to collect data from 120 catfish farmers using structured questionnaire. Data collected were analysed using descriptive statistics, Gross margin analysis and linear regression. Result shows that more than half (54.17%) of the catfish farmers were males while majority (63.34%) of the farmers were within the age group 31- 50 years. The mean age and household size of farmers in the study area were 38 years and 5 persons respectively. Most of the catfish farmers (45.83%) utilized concrete pond type while average fish pond size was 205 square metres. Major source of finance for farmers is from their personal savings. The gross margin analysis shows that gross margin for the catfish farmers was ₦22,013,583.1 while the average gross margin was ₦183,446.52 perproduction cycle indicating that catfish farming is profitable. The result of the linear regression reveals that pond maintenance, transportation and feed cost are negative and have significant effects on income generated from catfish business while pond size and education is positive and significant at 5%. Since catfish business is a profitable venture, the study recommends that the Nigerian government should use this as a means to empower unemployed youths and rural households to reduce poverty level as well as dependence on fish importation in the country.
 Keywords: Catfish farmers, Profitability, Production, Gross margin, Personal saving.
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Fattah, Mochammad, Susadiana Susadiana, and Dwi Sofiati. "Optimization of Pangasius Catfish Production in Pagersari Village, Tulungagung Regency." Journal of Aquaculture and Fish Health 10, no. 1 (2021): 85. http://dx.doi.org/10.20473/jafh.v10i1.20876.
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Pangasius catfish is freshwater fish for consumption that can be cultivated through fish farming. In order to produce optimal profits, Pangasius catfish farming must pay attention to the use of inputs in the form of seeds, feed and electricity. The purpose of this study was to analyze the optimization of Pangasius catfish production in Tondo Lestari fish cultivator group, Pagersari Village, Tulungagung Regency. Data collection techniques were in the form of interviews, observation and documentation. The data analysis used was linear programming using the POM-QM for Windows 5 software tool. The Pangasius catfish farming activities of the Tondo Lestari fish cultivator group have been optimal because they resulted in a low production difference between factual and optimal conditons of 3,05 kg or a profit of Rp. 10,502. . The optimal production of Pangasius catfish in a pond size of 200 m2 was 3,173.21 kg and the optimal production in a pond size of 300 m2 was 4,839.83 kg. Therefore, it can be concluded that Pokdakan Tondo Lestari can take advantage of additional feed and electricity input by reducing the use of seed input by 1.487 heads to increase profits.
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Meylani, Vita, and Rinaldi Rizal Putra. "DETEKSI BAKTERI GENUS VIBRIO SEBAGAI CAUSATIVE AGENT PADA IKAN LELE SANGKURIANG (CLARIAS GARIEPINUS VAR. SANGKURIANG) DI KOTA TASIKMALAYA." BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) 5, no. 1 (2018): 42. http://dx.doi.org/10.31289/biolink.v5i1.1689.
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<em>Sangkuriang catfish (Clarias gariepinus var Sangkuriang) is the main commodity that widely cultivated in Tasikmalaya City. However, farmers have difficulty because of the disease which causes death in fish. High mortality is suspected as a vibriosis disease by genus Vibrio because redness wounds on dead fish. The purpose of this study is to know the genus Vibrio which causes of disease in Sangkuriang catfish. 10 samples of fish were taken from Sangkuriang catfish pond culture in Kelurahan Kersanagara Tasikmalaya City which were potentially suspected of vibriosis disease. Isolation of bacteria were done on TCBS medium. Bacterial isolates were collected from fish lesion on the body surface, liver, and kidneys of catfish. Isolation were able to gained 21 isolates and then 5 isolates (VK1, VK5, VK7, VK17, and VK21) were selected based on colony morphology and Postulates Koch’s were tested. The results showed that the clinical symptoms of catfish infected by vibriosis were redness lesions/ulcers on the body surface, hemorrhagic, fluid inside stomach, and fin eroded with redness wound. Bacterial identification through biochemical test revealed the causative agent of catfish disease at brackish pond area were bacteria of the genus Vibrio (VK 1, VK 5, and VK 7), Vibrio vulnificus (VK 17 and VK 21).</em>
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Widyantoro, Hendro, Marini Wijayanti, and Sefti Heza Dwinanti. "MODIFIKASI MEDIA SPIRULINA PLATENSIS SEBAGAI UPAYA PEMANFAATAN AIR LIMBAH BUDIDAYA IKAN LELE." Jurnal Akuakultur Rawa Indonesia 6, no. 2 (2018): 153–64. http://dx.doi.org/10.36706/jari.v6i2.7159.
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ABSTRACTThe purpose of this study was to determine the best fertilizer compotition that was made from technical fertilizer and waste water of cat fish farming. This experimental was conducted at Aquaculture Laboratory, Faculty of Agriculture, Sriwijaya University. It used complete randomized design (CRD) method which had five treatments and three replications, the waste water from catfish pond (P0), waste water from catfish pond + 25% technical fertilizer (P1), waste water from catfish pond + 50% technical fertilizers (P2), the waste water from catfish pond + 75% technical fertilizers (P3), the waste water from catfish pond + 100% technical fertilizers (P4). The results showed that the best maximum density of S. platensis was P3 about 3.98 g l-1, and growth rate was equal to 2.80% day-1. The most significant parameter of water quality was ammonia which decreased until 82.78%. Besides, it was more beneficial than others based on Return Cost Ratio (R/C ratio) and Benefit Cost Ratio (B/C ratio) which were 3.66 and 2.66 respectively. Keywords: Spirulina platensis, waste water pond of catfish, modified media
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Ljubojević, D., M. Ćirković, V. Đorđević, et al. "Fat quality of marketable fresh water fish species in the Republic of Serbia." Czech Journal of Food Sciences 31, No. 5 (2013): 445–50. http://dx.doi.org/10.17221/53/2013-cjfs.
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The chemical and fatty acid composition were evaluated of commercially important fish species (common carp, silver carp, bighead carp, grass carp, Wels catfish, and zander) which were collected from retail stores in the area of Novi Sad, Republic of Serbia. The amount of protein was the highest in zander (19.27%) and the lowest in grass carp fillets (14.73%). The percentage of fat ranged from 1.8 in zander to 10.07 in common carp. The total cholesterol content was the highest in Chinese carps fillets (approximately 65.38 mg/100 g), and the lowest in Wels catfish (33.14 mg/100 g). SFA were lowest in zander (28.6%). Bighead carp meat contained the highest percentage of PUFA (33.73%) while the lowest percentage was detected in common carp (20.1%). The chemical and fatty acid compositions of fish vary greatly between different species and within the same species. The quality of fish meat in Serbian retail stores is quite good but it should be improved by using feed mixtures on fish ponds.
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Khan, Saleha. "Study on the occurrence and abundance of noxious Microcystis spp. in pangasiid catfish (Pangasianodon hypophthalmus) ponds." Journal of Aquaculture & Marine Biology 9, no. 1 (2020): 1–8. http://dx.doi.org/10.15406/jamb.2020.09.00269.
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As microalgal blooms are very common and making serious problems in water bodies throughout Bangladesh, an investigation was carried out to see the composition and succession of noxious blue-green algae in pangasiid catfish (Pangasianodon hypophthalmus) ponds. During the course of the study, 20 species of Cyanophyceae were recorded, and among them Microcystis aeruginosa was the most abundant compared to other species. Significant occurrence of Microcystis viridis was also observed. Efforts were made to study certain physico-chemical factors and their influence on the composition and seasonal abundance of these species. Peak abundance of M. aeruginosa was observed from July to August. Moderately higher water temperature, lower rainfall and NO3-PO4 enrichment increased the biomass of both M. aeruginosa (168.72×103cells/L) and M. viridis (8×103cells/L) in the experimental ponds. Higher feeding rate in monoculture of pangasiid catfish (P. hypophthalmus) made the ponds hyper nutrified by unutilized feed and fish excreta that supported the higher abundance of these Cyanophyceae. In composite culture ponds, silver carp (Hypophthalmichthys molitrix) effectively grazed down the microalgae and as a result, algal bloom was not noticed.
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Wijayanti, Marini, Mohamad Amin, Tanbiyaskur Tanbiyaskur, et al. "Aquaponic Biofloc Technology by Swamp Bacteria Probiotic for Clarias Catfish Rearing." Journal of Aquaculture and Fish Health 10, no. 3 (2021): 258. http://dx.doi.org/10.20473/jafh.v10i3.23549.
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Conventional catfish culture in Ogan Ilir (OI) have not optimal production, it can be increased by biofloc and aquaponics with local swamp bacteria as a starter. The purpose of this study was to apply biofloc technology and a combination of aquaponic-biofloc to increase the productivity of catfish (Clarias sp.) rearing. The study used two ponds, a biofloc circular pond and a combined biofloc and aquaponic (biofloqua) for two months. The results of the specific growth rate of fish in the aquaponic biofloc system were higher than that of the biofloc system alone. The survival of the fish during two rearing months of the Biofloqua system was 100% while the Biofloc system was 92-96%. The water quality data that measured were temperature, 30.3–31.9oC, Dissolved oxygen 4.5–7.2 mg.l-1, pH 6-7, and ammonia concentration 0.27-0.71 mg.l-1 in the biofloc system and 29.5-31.3oC, 4.7-7.4 mg.l-1, pH 6-7, 0.20-0.53 mg.l-1 in biofloqua system, respectively. The floc volume formation rate in the biofloc system alone reached 1.1 ml.l-1 per day, which was above the floc formation rate for the biofloqua system 0.42 ml.l-1 per day, due to the use of nutrients for plant growth. The combination of biofloc and aquaponics showed more optimal growth performance and both were efficient in feed (Food Conversion Ratio / FCR <1.00). Although the results of the 5% level t test showed no difference in the performance of the aquaculture biota between the two systems, Biofloqua can be an alternative to increase fish farmer income by harvesting vegetables and fish together.
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Pratiwi, Rifqah, Kurniawan Wahyu Hidayat, and Sumitro Sumitro. "Production Performance of Catfish (Clarias gariepinus Burchell, 1822) Cultured With Added Probiotic Bacillus sp. on Biofloc Technology." Journal of Aquaculture and Fish Health 9, no. 3 (2020): 274. http://dx.doi.org/10.20473/jafh.v9i3.16280.
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Biofloc technology (BFT) is one of the most developed aquaculture technologies, which aims to improve the efficiency of feed use by providing nutrients for flocs to be used by fish as a supplementary feed. Also, BFT serves to improve water quality through the breaking down of fish waste materials assisted by heterotrophic bacteria. Bacteria used in this study were Bacillus sp. as probiotics in BFT. This study aimed to examine the production performance of catfish maintained with a biofloc system on an industrial scale, without experimental design. The average weight of catfish when stocking was 5.9 ± 0.0 g/fish with a density of 7000 fish in 9 unit circular ponds. This studies showed after 78 days of culture, bodyweight gain about 28.6 g/fish to 41.7 g/fish, highest specific growth rate was K2 (2.4 ± 0.2% BW/day), the highest survival rate K2 (98.87 ± 6.64% BW/day), highest grow rate K1 (41.7 ± 5.8 g) and the best FCR K9 (0.95 ± 0.11).
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Umari, Zainal, Marsi ., and Dade Jubaedah. "PENGGUNAAN KAPUR DOLOMIT [CAMG(CO3)2] PADA DASAR KOLAM TANAH SULFAT MASAM TERHADAP PERBAIKAN KUALITAS AIR PADA PEMELIHARAAN BENIH IKAN PATIN (Pangasius sp.)." Jurnal Akuakultur Rawa Indonesia 5, no. 2 (2018): 195–208. http://dx.doi.org/10.36706/jari.v5i2.7143.
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ABSTRACTAcidic waters was common problem in aquaculture in acidic soil area. Poor water quality in the acid sulfate soil pond has potential to decrease fish survival rate dan fish growth. Liming pond is one of method to neutralize (buffer) acid in fish pond. The aim of the research is to determine the best dosage of dolomite lime [CaMg(CO3)2] in acid sulfate soil pond to water quality, survival rate and growth of catfish. The research conducted on September-October 2016 in Laboratorium Kolam Percobaan, Program Studi Budidaya Perairan, Fakultas Pertanian, Universitas Sriwijaya, Indralaya. The research based on completely random design with four treatments and three replications. The treatments were different dosage of dolomite lime that are 6 (P1), 9 (P2), 12 (P3), and 15 (P4) ton/ha equivalent CaCO3. The research parameter were water quality, survival rate, and growth. The result showed that dosage 12 ton/ha was the best treatment that has highest survival rate 96.6 %, absolute growth of length 3.5 cm, weight 7.91g and feed efficiency 106,77%. Keywords: liming, dolomite, acid sulfate soil, seedling catfish