Open Access Original Research Article

Composition of Volatile Flavor Compound on Fresh Asian Redtail Catfish

Sofie Widya Asri, Rusky Intan Pratama

Asian Journal of Fisheries and Aquatic Research, Page 1-7
DOI: 10.9734/ajfar/2021/v13i330264

The purpose of this research was to identify the composition of volatile flavor compound of asian redtail catfish (Hemibagrus nemurus). The method of this research was experimental method of fresh sample. The extraction sample method in this research was Solid Phase Microextraction (SPME) and used Gas Chromatography-Mass Spectrometry (GC/MS) to detect the compound on the sample. The volatile flavor compound were successfully detected with total 23 compounds on fresh sample and mostly the compounds were derived from hydrocarbons, aldehyde, alcohols, ketones, ester, and others. The highest proportion that detected was hexanal compound (26,78%) The proximate analysis was also identified. The result of proximate analysis on fresh sample were water content (79,21%), ash (1,09%), protein (17,21%), and fat (2,17%)

Open Access Original Research Article

Effect of Feeding Rate on the Growth and Nutrient Utilization of African Catfish Clarias gariepinus (Burchell 1822) Juveniles

A. N. Fakolade, A.O. Bamigboye, D. K. Osazuwa

Asian Journal of Fisheries and Aquatic Research, Page 8-12
DOI: 10.9734/ajfar/2021/v13i330265

This study was conducted to examine the effect of feeding at different time intervals of the day on the growth efficiency of African catfish (Clarias gariepinus, Burchell 1822). Juveniles of African catfish Clarias gariepinus with an average weight of 16.0±0.20g were randomly stocked into four treatment groups (T1, T2, T3 and T4) at 10 fish per group using a completely randomized design (CRD). The treatment groups were T1 (Fish fed once daily), T2 (Fish fed twice), T3 (Fish fed Thrice daily) and T4 (Fish fed four times daily). They were all fed 3% of their body weight. Data obtained was analysed using Genstat package while means where separated using Duncan Multiple Range Test. The result of the study showed that the highest weight gains of 104.49g was recorded in Treatment 3, this was followed by Treatment 2 with a mean weight gain value of 92.42g. The least value of weight gain (76.74g) was recorded in Treatment 1. Also, the highest feed intake value of 142.83g was recorded in Treatment 3, this was followed by Treatment 2 with a mean feed intake value of 135.12g. The least value of feed intake (112.95g) was recorded in Treatment 1. The feed conversion ratio and Protein Efficiency ratio (PER) also followed similar trend as that of weight gain and feed intake. The highest PER value of 2.10 was recorded in Treatment 3, this was followed by Treatment 2 with a mean PER value of 1.69. The least PER value (1.39) was recorded in Treatment 4. ANOVA showed that there was significance difference (P<0.05) in the PER value between Treatment 1, 2 and 3. However, Treatment 1 was not significantly different (P>0.05) from Treatment 4. At the end of the Study, three times feeding per day was found to be sufficient for maximum growth as it recorded the highest value for growth parameters monitored and was significantly different from other treatments.

Open Access Original Research Article

Gillnet Selectivity on the Narrow-barred Spanish Mackerel (Scomberomorus commerson) Fishery in Pangandaran Waters

Izza Mahdiana Apriliani, Lantun P. Dewanti, Herman Hamdani, Soraya Gigentika, Rachmad Cesario, Caca Oktavera

Asian Journal of Fisheries and Aquatic Research, Page 13-19
DOI: 10.9734/ajfar/2021/v13i330266

Analyzing the selectivity of gillnet fishing gear using two different mesh sizes, namely 3.5 and 4 inches. Gillnets of these mesh sizes are commonly used by fishermen in Fish Landing Base (PPI) Cikidang, Pangandaran Regency, West Jawa. A total of 8 fishing trips were conducted at the coastal waters around PPI Cikidang, Pangandaran Regency, West Java from August 2018 to January 2019  using gillnet fishing gear As for each trip, 2-3 times the operation of the tool is carried out. The operation of the fishing gear is carried out with the help of vessels measuring 2-3 Gross Tonnage (GT). The catch obtained was differentiated based on the main catch and bycatch and the amount is calculated for analysis of the proportion of the catch. Mackerel (Scomberomorus commerson) is caught as the main catch, the fork length was measured for analysis of the length frequency distribution and selectivity curves. The operation of gillnets with a mesh size of 3.5 inches obtained a higher proportion of bycatch compared to gillnets with a mesh size of 4 inches. In addition, the length distribution of mackerel caught by gillnets with a mesh size of 3,5 inches is smaller (27-49 cm FL) compared to a mesh size of 4 inches (40-55 cm FL). Based on the distribution of length distribution, gillnets with a mesh size of 3.5 inches are more dominant in catching mackerel in a smaller size class interval than gillnets with a mesh size of 4 inches. Meanwhile, based on the selectivity curve for the length of mackerel with a 50% chance of being caught, it shows that gillnets with a mesh size of 3.5 or 4 inches are selective in catching mackerel, this is because the chances of catching fish at more than L50 are high.

Open Access Original Research Article

Marketing Strategy of HDL 293 Cilaki Bandung Seafood Restaurant (West Java) in the Midst of COVID-19 Pandemic

Ghaida Yasmin Amini, Atikah Nurhayati, Achmad Rizal, Asep Agus Handaka

Asian Journal of Fisheries and Aquatic Research, Page 20-34
DOI: 10.9734/ajfar/2021/v13i330267

This research was held at HDL 293 seafood restaurant located on Cilaki street, Bandung, West Java. The implementation started on April 2020 until May 2021. This research aims to analyze internal environmental conditions including strengths and weaknesses, while external environmental conditions including opportunities and threats faced, then formulate and analyze marketing strategy during the COVID-19 pandemic. The method used is a case study using primary and secondary data. The sampling method used was accidental sampling and data processing used SPSS 25, Ms. Excel through SWOT analysis. Based on research, the best strategy for development of HDL 293 Cilaki Bandung seafood restaurant using SWOT analysis is in Quadrant I by implementing the SO (Strength and Opportunity) strategy or supporting an aggressive growth policy (growth oriented strategy). Where the coordinates are 0.38 ; 0.05 means taking advantage of strengths to seize opportunities that exist.

Open Access Review Article

Utilization of Water Hyacinth (Eichhornia crassipes) as Fish Feed Ingredient

Dian Yuni Pratiwi, Aulia Andhikawati

Asian Journal of Fisheries and Aquatic Research, Page 35-42
DOI: 10.9734/ajfar/2021/v13i330268

A freshwater plant, water hyacinth (Eichhornia crassipes) is commonly found in public waters in Indonesia. Water hyacinth often experiences blooming which causes negative impacts such as lowering oxygen levels, reducing the number of fish, increasing evapotranspiration, disrupting transportation, becoming habitat for disease vectors, and others. However, water hyacinth can be used as an alternative raw material because it still contains nutrients such as carbohydrates, proteins, fats, vitamins, and minerals. Water hyacinth also has potential as an antibacterial agent because it contains secondary metabolites (alkaloids, saponins, steroid compounds, flavonoids, phenolic compounds, glycosides, and cardiac glycosides). The utilization of water hyacinth as fish feed ingredient has been shown to give positive effect on the growth of African catfish (Clarias gariepinus), grass carp (Ctenopharyngodon idella), goldfish (Cyprinus carpio), and Tilapia (Oreochromis niloticus) seeds. The use of water hyacinth as an alternative fish feed ingredient can be a solution to reduce production costs and reduce the impact of water hyacinth blooms.