Asian Journal of Fisheries and Aquatic Research
Not a member yet
1022 research outputs found
Sort by
Effect of Using Fern Leaf Extract (Diplazium esculentum) in Raw Fish Feed on Growth and Feed Conversion Ratio of Mud Crab (Scylla serrata)
No full textMangrove crab or known as Scylla sp. is one of the biota whose habitat is in coastal waters, especially in mangrove forest areas. The need for mangrove crabs still largely relies on natural catches that are fluctuating. For this reason, it is necessary to cultivate mangrove crabs in a controlled manner that can support an effective, efficient and economically profitable mangrove crab farming business. Cultivation can increase mangrove crab production to meet domestic and foreign market demand. An alternative that can be chosen for mangrove crab cultivation is an apartment system that is arranged vertically in the form of a storage rack. The water medium used in this apartment system cultivation uses a recirculation system. One of the efforts to accelerate the growth of crabs is by using steroid hormones. Ecdysteroid is the main steroid hormone that has the main function as a skin replacement hormone. In addition, this hormone also regulates physiological functions, such as growth, metamorphosis, and reproduction. Therefore, this study was conducted to determine the effect of using fern leaf extract (Diplazium esculentum) in raw fish feed with different doses on growth and feed conversion ratio in mud crabs. This research method uses a field experimental method with a completely randomized design (CRD) consisting of 5 treatments and 3 replicates with different percentage doses, namely: PA: Percentage of 0 ml/Kg, PB: Percentage of 100 ml/Kg, PC: Percentage of 125 ml/Kg, PD: Percentage of 150 ml/Kg, PE: 175 ml/Kg percentage. The results showed that the use of fern leaf extract in mangrove crab (Scylla serrata) feed had a significant effect on the growth of absolute weight, Absolute Length, SGR (Specific Growth Rate) and FCR (Feed Conversion Ratio) where the most influential treatment was treatment E which was the highest dose of 175 ml/Kg. This indicates that treatment E is the best dose treatment for growth and feed conversion ratio of mud crab (Scylla serrata)
Bio-Economic Assessment of Novel Fish Feed Formulation Software (FUTA AQUAFEEDAPP) for African Catfish Clarias gariepinus (Burchell 1822) Raised in Recirculatory Aquaculture System
No full textIn the current study, data on nutritional composition and cost of conventional and non-conventional fish feed ingredients were gathered, a spreadsheet was created to bank the data. Four fish feeds were formulated and produced using three conventional fish feed formulation methods namely Pearson’s Square feed formulation method and two other conventional fish feed softwares, WINFEEDTM, ALLIXTM and a developed software (FUTA AQUAFEEDAPP); the software was developed using data analytical tools: simple harmonic equation, linear programming and stochastic programming techniques. The nutrient composition of the four diets were evaluated in the laboratory. The result of the proximate analyses indicated that the four diets met the crude protein requirements for African Catfish fingerlings, the values ranged from 40.68±0.62 (Pearson square) to 40.98±0.86 (ALLIX). There were no significant differences in the moisture content, crude protein, crude fibre, crude lipid and NFE across all treatments, however there was significant difference in the ash content across the four diets. The result of the cost assessment across the four treatments were significantly different, it revealed that AQUAFEED had the lowest investment cost (1.5/kg) due to the high inclusion of fishmeal in the diet
Use of Fish Somatic Indices to Assess Pollutant Exposure and Effects: A Case of Two Urban Rivers and a Wastewater Sedimentation Pond in Lake Victoria Basin
No full textAquatic ecosystem health assessment is critical for early detection of disturbances and water habitat degradation. This study assessed the ecological status of two urban rivers as well a wastewater sedimentation pond in Kisumu City, Kenya using physico-chemical water quality parameters and the African catfish, Clarias gariepinus somatic indices. Site association of somatic indices was derived from Principal Component Analysis (PCA) whereas the relationship between water quality parameters was examined by Redundancy Ordination Analysis (RDA). PCA results revealed an increase in Gill Somatic Index (GSI) in the wastewater sedimentation ponds while Fulton’s Condition Factor (CF) increased in the midstream of Auji river and Kisat river mouth. Similarly, RDA showed that dissolved oxygen, temperature, total phosphorus, alkalinity and total nitrogen influenced the condition indices upstream of Kisat river and up-stream and midstream of Auji river. However more impact on somatic indices were recorded in the wastewater sedimentation pond. Although specific pollutants other than the physico-chemical parameters were not identified, application of somatic indices in the African catfish demonstrated that the two rivers as well as the wastewater sedimentation pond were contaminated by pollutants that can compromise the ecological health of the aquatic systems. The results of this study emphasized the negative impacts of anthropogenic activities on the environment
Effect Of Macroalgae Feed Type on Abalone Growth and Survival (Haliotis squamata) on the Cultivation System Polyculture with Nemo Fish (Clownfish)
No full textAbalone (Haliotis squamata) or sea snails are also called awabi, mutton fish, and sea ear. Abalone cultivation (Haliotis squamata) has quite good prospects, considering that the demand for Asian markets such as Japan, China, and Singapore is increasing. The world\u27s demand for abalone is increasing in line with the increasing need for a diversity of protein sources. In addition to abalone, other leading commodities in marine aquaculture are nemo fish (Clownfish). Nemo fish has high economic value both in the local and international markets with a wide range of market-markets such as Australia, Japan, Germany and France. Increasing the production of these two commodities can be cultivated in one container called polyculture. Polyculture is cultivation by keeping more than one type of fish or species in the same container. The application of polyculture techniques is expected to increase the carrying capacity or carrying capacity of cultivation containers. The success of polyculture will determine the growth and sustainability of abalone and nemo fish cultivation activities. This study uses an experimental method with a Complete Random Design with the treatment of macroalgae feed types consisting of 5 types, namely: This treatment was carried out with 5 treatments and 3 repetitions, namely: Gracilaria sp. (A), Ulva lactuca (B), Caulerpa (C), Kappaphycus alvarezii (D), Sargasum (E). The five types of treatments were repeated 3 times so that 15 experimental units were obtained. The results of the research that have been carried out, show that the difference in macroalgae in the maintenance of abalone mussels with nemo fish has a real influence on the growth (absolute length and absolute weight) and the survival rate of abalone mussels (Haliotis squamata) and nemo fish (Clownfish) which are the best in the maintenance with macroalgae Gracillaria sp
Study the Ecological of the Banggai Cardinalfish in the Sea Waters of Banggai Laut Regency, Indonesia
No full textIndonesia is one of the countries with a high level of biodiversity. This is evidenced by the many species of fish and coral in Indonesian waters. The abundance of biodiversity also allows Indonesia to have endemic species, one of which is the Banggai Cardinalfish. Banggai Cardinalfish (Pterapogon kauderni) is one of the endemic species found in the Banggai Islands-Central Sulawesi-Indonesia. This study aims to see the bio-ecological conditions of the Banggai Cardinalfish. This study was conducted in January-March 2014 in North Banggai District, Banggai Laut Regency, Central Sulawesi Province. The study was conducted using the observation method and monitoring the population of Pterpogon kauderni at predetermined stations and measuring the quality of marine waters at each station. Population monitoring was carried out using the Belt transect method. The data obtained were then analyzed using population density analysis. The water quality data obtained were then compared with the seawater quality standards according to PP No. 22 of 2021. Based on the research results, it is known that the population of Banggai Cardinalfish and associated biota from each location is generally low, only at station III which has the highest population. Water quality conditions are generally optimal only at salinity parameters that tend to be very high
Strategies for the Development of Tilapia Fish Floss Processing Businesses: A Case Study in Cijambe Village, Cijambe Sub-district, Subang District
No full textAims: This study aims to analyze the strategic development of UMKM Ibu AAS\u27s tilapia fish floss processing business, evaluating its internal and external factors to determine appropriate growth strategies.
Study Design: The research follows a case study design focusing on a single business unit, UMKM Ibu AAS, to understand its operational, financial, and strategic aspects.
Place and Duration of Study: The study was conducted at UMKM Ibu AAS, Cijambe Village, Subang District, over a period of six months from January to June 2021.
Methodology: This study employed qualitative and quantitative methods, including SWOT analysis, financial analysis, and observational techniques. The financial analysis covered short-term and long-term aspects, while the SWOT analysis helped identify the strengths, weaknesses, opportunities, and threats of the business. Primary data were collected from business records, interviews with key personnel, and direct observations.
Results: The study revealed that UMKM Ibu AAS, despite having solid operational strengths and a strategic location, faces challenges in capital limitation and high production costs. The business shows potential for growth, indicated by a strong market demand and advantageous relationships with consumers. Financial analysis suggest profitability with an R/C ratio of 2.027, indicating efficient revenue generation against costs. The SWOT analysis positions the business in Quadrant I, suitable for aggressive growth strategies focusing on exploiting strengths and opportunities.
Conclusion: UMKM Ibu AAS has a promising future in the tilapia fish floss industry, contingent on strategic capital investment and efficient management. The study recommends adopting aggressive growth strategies, enhancing production technology, expanding market reach, and establishing stronger partnerships to capitalize on the available opportunities
Species of Monogenean Parasites Infesting Cyprinus carpio and Planiliza abu in Lake Balloran Dam-Syria
No full textThis study was conducted in Lake Balloran Dam and involved 68 fish specimens, including 23 common carp (Cyprinus carpio) and 45 Abu mullet (Liza abu). Sampling was carried out monthly and randomly from July 2020 to August 2021. The research addressed parasitic infections in these two important species of freshwater fish.
This work identifies five parasitic species of monogeneans, three of them were isolated from common carp and identified as species belonging to the genus Dactylogyrus: D. dogieli, D. minutus, and D. extensus. One species was isolated from both the common carp and Abu mullet, and identified as the species Gyrodactylus derjavini, and the other species, G. elegans, was isolated from only the common carp.
Dactylogyrus species were primarily isolated from the gills of the studied fish, whereas Gyrodactylus species were found on the skin and fins.
This study is of fundamental interest for the knowledge of parasitic biodiversity on the Asian continent that are widespread in vast bodies of water, and the species D. dogieli and G. derjavini were recorded for the first time in Syrian freshwater in this study
Comparative Study of the Nutritive and Elemental Composition of Smoked and Raw Clarias gariepinus from Three Selected Fish Farms in Ado Ekiti, Ekiti State, Nigeria
No full textClarias gariepinus is of economic importance in aquaculture due to its rapid growth, omnivorous diet, and potential as food source. It has been widely cultured and dispensed both in raw and smoked forms in various regions to meet the demand for fish protein This study assessed and compared the nutritional quality and elemental composition of smoked and raw samples of Clarias gariepinus. A total of twelve fish samples were analysed, six raw samples and six smoked samples with two fishes sampled from each farm tagged A, B and C. The Proximate and elemental analysis were done using standard procedures. The result of the study showed that moisture content measured in the raw Clarias gariepinus which ranged between (73.074 ± 1.59) % and (71.52 ± 1.83) %. was higher than that of the smoked fish ranging from (26.69±0.03) % to (32.21± 0.02) %. The protein content of smoked fish ranged (43.2±0.02) % to (46.78±0.01) while that of raw fish was between (20.52 ± 1.12) % and (22.15 ± 0.43) %. Similarly, the crude fat, ash, carbohydrate, and fibre content were higher in the smoked fish than raw catfish samples. The elemental composition of both smoked and raw catfish were within the permissible limit of World Health Organization. Arsenic was not detected in the muscle of the raw fish, while cadmium, chromium, lead and magnesium were present in values within WHO permissible limit and similar results was observed for the smoked fish samples. The result of this study presents the possibility of smoked catfish being more nutritious than the raw samples aside from the fact that it has more shelf life than raw fish. Also, both smoked and raw samples of the fish are safe as the values of heavy metal observed were all within the permissible limit of WHO
Morphometric Characterization and Fillet Yield of Two Commercial Fish Species from Panyam Fish Farm Plateau State
No full textA total of 50 individual samples of Parachanna obscura and Clarias gariepinus were collected fresh from Panyam fish farm with the aid of crush ice for preservation until assessment was carried out to determine the fillet yield of Parachanna obscura in comparism with Clarias gariepinus.
The whole fresh fish samples were taken to the department of Fisheries and Aquaculture laboratory of the Federal University, of Agriculture, Makurdi for assessment. Their Total and Standard Lengths were recorded (in cm) using a Measuring Rule, while Total Body Weights were recorded (in grams) using an electronic weighing balance. Data were collected on: the Total Weight (g), Total Length (cm), Standard Length (cm), Visceral Weight (g), Head Length (cm), Weight of Bones (g), Weight of Fins (g) and Weight of Fillet (g) in comparism between the two fish species. Descriptive statistics for morphometric data were determined using Minitab 18® (Minitab 2017). Regression and correlation of variables was carried out in R (R Core Team 2020). Results of the mean measured parameters of Parachana obscura and Clarias gariepinus from Panyam Fish Farm Jos, showed that Total Length (42.66 ± 0.58cm), Standard Length (38.56 ± 0.29cm), Fin Weight (15.51 ± 0.37g), Visceral Weight (11.04 ± 0.17g), Head Weight (1.49 ± 4.01g), Bone weight (39.84 ± 0.80g) and Weight of fillet (89.02 ± 2.38g) of Parachana obscura were higher than the mean measured parameters of Clarias gariepinus. There was a significant difference (p= .05) among the measured parameters between P. obscura and C. gariepinus. The higher fillet percentage per body weight of P. obscura in comparism to C. gariepinus is a pointer to a relatively higher economic value for commercial purposes of this species. This assessment also provides information for further studies on this species to be built on, as there is obvious need for Nigeria’s aquaculture system to diversify from the prevalent catfish culture
Evaluating the Efficacy of Oregano (Origanum vulgare) and Natrum Muriaticum to Enhance the Growth and Induced Breeding of Tilapia (Oreochromis mossambicus)
No full textMonitoring fish health in a repeatable and accurate manner can contribute to the profitability and sustainability of aquaculture. There is a growing interest in fishery industry to replace synthetic chemicals by natural products for induced breeding. This study is aimed to find out the efficacy of oregano (Origanum vulgare) and natrum muriaticum (homeopathy preparation) in edible fish tilapia (Oreochromis mossambicus). The present study showed biochemical compounds like protein levels in muscle and ovary during the breeding time in tilapia, induced by Origanum vulgare and homeopathy preparation Natrum muriaticum 30c potency. Both caused an increase in protein level at the end of the experiment in tilapia. In protein profile study the variation in their number and staining intensities of different fractions may reflect their different type of metabolic activity, reproductive age, and their environmental conditions. Comparing haematological parameters between treatments within the same experimental design can be a reliable monitoring tool. It is believed that this parameter can better reflect the health of fish than any of the other parameters separately. The increased concentration of Hb in the blood of the Origanum vulgare treated groups may have increased oxygen delivery to the tissues, and, as a result, their ovarian tissue growth was improved. We have found oregano (Origanum vulgare) extract to be remarkably effective on fish growth and the fish immune system, enabling us to reach 3rd goal of SDGs approach (Ensure healthy lives and promote well-being for all at all ages)