Open Access Original Research Article

Effect of Fermented Lamtoro Leaf (Leucaena leucocephala) Meal on Growth Rate of Giant Gourami Fingerlings (Osphronemus gouramy)

Choirun Nissa Ramadhani, Yuli Andriani, Ibnu Bangkit Bioshina Suryadi, Kiki Haetami

Asian Journal of Fisheries and Aquatic Research, Page 1-8
DOI: 10.9734/ajfar/2020/v8i330138

This research aims to determine the percentage of the addition of fermented lamtoro leaf on fish growth rate of gourami fingerlings. The test fish used was gourami that amounted to 320 tails with a length of 4-6 cm from Farming Development Gurame and Nilem – Singaparna, Tasikmalaya. The container used in this research was an aquarium with a total of 16 pieces with a size of 40 × 30 × 30 cm3. The density of gourami fingerlings during the research was 20 fish-tails/aquarium with long maintenance of 40 days. The feed given is 5% of the fish body biomass. The research was conducted on 8 November 2019 until 14 February 2020 at the Fisheries Laboratory, Faculty of Fisheries and Marine Sciences, Universitas Padjadjaran, Indonesia. This research used experimental method with Completely Random Design (CRD), which consists of four treatments and four times the repeated feeding of commercial feed (control), the leaf meal of lamtoro fermentation result 10%, 15%, and 20%. Based on the results of the research, fermentation of lamtoro leaves can improve nutrient content after fermentation, seen from the presence of increased protein content from 21.88% to 26.11% and decrease in crude fiber content from 46.33% to 20.85%. The addition of lamtoro leaf meal fermentation results up to 15% in commercial feed resulting in a daily growth rate of 1.90%, feed conversion ratio of 2.05 and the survival rate of 70%.

Open Access Original Research Article

Effects of Dietary Potassium Diformate on Growth Performance, the Relationship between Fish Length and Weight, Feed Conversion and Survival Rate of Giant Freshwater Shrimp (Macrobrachium rosenbergii)

Anggi Nugraha, . Iskandar, Ibnu Bangkit, Walim Lili

Asian Journal of Fisheries and Aquatic Research, Page 9-16
DOI: 10.9734/ajfar/2020/v8i330139

This study was purposed to determine the optimal dose addition of potassium diformate to commercial feed to increase the growth of giant freshwater shrimp. The method employed in this study was an experimental method, embracing application of a Randomized Block Design (RBD) method. It consists of four treatments and four replications. The treatments was based on the difference of potassium diformate amount in which given to giant freshwater shrimp. The difference of potassium diformate amount was 0% (control), 1%, 3%, and 5%. The sample of study used giant freshwater shrimp with a length of 4 - 6 cm. The samples were obtained from the Giant freshwater Shrimp Breeding Center, Pamarican, West Java Province. The shrimp were kept in 16 nets in a density of 20 shrimps and the size of the net cage is about 1 m3. The parameters observed in this research were daily growth rate, feed efficiency, the relation between length and weight, survival rate (analyzed using ANOVA with p < 0,05), and water quality. The sampling was made every 10 days. The results showed that the addition of potassium diformate by 1% gave the best result of daily growth rate of 1.86% ± 0.60, feed efficiency value of 19% ± 1.91, survival rate of 92% with net profit Rp. 67.160.- and for the length and weight relationship has a value of b> 3 which means that it has positive allometry along with water quality parameters regarded to SNI (Indonesian national standard).

Open Access Original Research Article

The Environmental Friendliness Level of Boat Bagan Fishing Gear in Belitung Regency

Satrio Bimo Arya Tejo, Dedi Supriadi, Rita Rostika, Alexander M. A. Khan

Asian Journal of Fisheries and Aquatic Research, Page 17-27
DOI: 10.9734/ajfar/2020/v8i330140

This research aimed to analyze the environmental friendliness level of boar bagan towards the amount of fish caught by the fishermen in Belitung Regency Waters and determined fish composition based on the type and the length of fish. The research was conducted in August 2019. The primary data collection technique used was purposive sampling technique while the secondary data was obtained from Tanjungpandan Archipelago Fisheries Port (Pelabuhan Perikanan Nusantara Tanjungpandan/PPN). The research analyzed types of fish composition, proportion of main and bycatches, proportion of biologically worth caught fish, proportion of utilized catches, and eco-friendly analysis. Based on the results of research on the environmental friendliness level of boat bagan fishing gear in Belitung Regency Waters, it can be concluded that the boat bagan catch during the study obtained 10 species including fringescale sardinella (Sardinella fimbriata), spotted sardinella (Sardinella sirm), devis’ anchovy (Stoleporus devisi), squid (Loligo sp), short mackerel (Rastrelliger brachysoma), common ponyfish (Leiognathus equulus), largehead hairtail (Trichiurus sp), and yellowstrip scad (Selaroides leptolesis), large pelagic fish such as barracuda (Sphyraena sp), and demersal fish was also caught such as pufferfish (Tetraodo sp). Boat bagan fishing gear is classified as less environmentally friendly because 48% of fish caught was not mature, fish that are not the main target fish (bycatch) was 41%, and it catches more than 3 target fish species. However, the utilization of catch is quite good at 99,12%.

Open Access Original Research Article

Proportion and Total of Commodities Blue Swimming Crab (Portunus pelagicus Linnaeus, 1758) Catches in Gebang Mekar Village, Cirebon Regency, West Java Using Crab Gillnet and Collapsible Crab Trap

Iwang Gumilar, Dedi Supriadi, Nabilla Shabrina, Alexander M. A. Khan

Asian Journal of Fisheries and Aquatic Research, Page 28-33
DOI: 10.9734/ajfar/2020/v8i330141

Blue swimming crab (Portunus pelagicus) is one of the high economic value commodities which causes increased efforts to catch blue swimming crab in Indonesia. The effort of catching continues to increase the blue swimming crab resources in the nature that has decreased. Cirebon Regency is one of the largest blue swimming crab fishing centers in West Java with a total value of blue swimming crab production in 2017 by 7,347 tons/year. This research was conducted to determine the selecitivity level of the crab gillnet and collapsible crab trap based on the proportion and total of catches obtained in Gebang Mekar Village, Cirebon Regency. Research was conducted in September 2019 – October 2019 in Gebang Mekar Village. For this research we used are primary data; collected directly during the observations includes catch type and weight of the catches and then interviews with several crab gillnet and collapsible crab trap fisherman and secondary data; data from official agencies and some literature. Our research suppose the moonlight phase effect of the blue swimming crab catch. Based on the research, it can be concluded that the crab gillnet with 3.5 inch mesh size and collapsible crab trap that operated in Gebang Mekar Village may be called a selective fishing gears but crab gillnet is more  eficient as compared to collapsible crab.

Open Access Original Research Article

Effectiveness of Different Bubble Size of Aeration to Survival and Growth Rate of Pangas Catfish Larvae, Pangasius nasutus

Irfan Noer, Rafi Satriawan, . Iskandar, B. S. Ibnu Bangkit, . Rosidah

Asian Journal of Fisheries and Aquatic Research, Page 34-41
DOI: 10.9734/ajfar/2020/v8i330142

This research was conducted at the fish fry center in Tasikmalaya City, Jl. Kadupugur No. 42 Kota Tasikmalaya. The research was done from November 2019 until February 2020. This research is carried out to determine the survival rate and growth of pangas catfish larvae up to the age of 22 days. Old with different bubble sizes of aeration stone the pangas catfish larvae used was 600 fingerlings that are spread evenly into 12 aquariums with four treatments each replicated three times using a completely randomized design (CRD). The parameters observed are survival rate, growth rate (weight and length), and water quality. The results showed that the aquarium with aerator ASB05 is the most effective treatment in influencing the productivity of pangas catfish larvae. The survival rate is 99.3%, the absolute length is 14.81mm and the absolute weight is 40.1 g. whereas the water quality of each treatment is still within the SNI quality standard (2000) with dissolved oxygen level is 5.40 mg/L.