DEPIK Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan
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Additional of EM4 and molasses in feeds on the growth and survival rate of snakehead (Channa striata)
Get PDFThis study aims to determine the effect of giving EM4 probiotics on the growth and survival rate of snakehead (Channa striata). This research was carried out at the Fish Hatchery Laboratory, Faculty of Marine and Fisheries, Universitas Syiah Kuala. This study was conducted using a Complete Randomized Design (CRD) method with 4 treatments used, namely A (control), B (EM4 6 ml/kg of feed), C (EM4 8 ml/kg of feed), and D (EM4 10 ml/kg of feed). The results showed that the addition of 10 ml/kg of feed of EM4 probiotic resulted in an absolute length growth of 1.600.17 cm, an absolute weight growth of 1.850.18 gram, a specific growth rate of 1.970.10 % per day, a feed conversion ratio of 1.560.03, feed efficiency 64.191.41 % and survival rate 97.783.85 %. The results of this study can be concluded that the addition of probiotic EM4 10 ml/kg of feed can increase the growth and survival rate of snakehead (Channa striata).Keywords:Channa striataEM4Commercial feedGrowthSurvival rat
A study on the development of a fishing shipyard in Peukan Bada District, Aceh Besar using fishbone analysis: A short comunnication
Get PDFThe People of Peukan Bada generally work as fishermen. The ships used by the Peukan Bada people are generally wooden material. The capture fisheries sector in the Peukan Bada area is currently still small in scale. This can be seen from the type of fishing gear used by ships operating in the waters of Peukan Bada. The problem is that the shipbuilding industry in Peukan Bada is currently not developing following the challenges faced. So it is necessary to develop a fishing boat yard in the area. The purpose of this research is to find out what meters need to be considered in the development process. The method of collecting data used in this study is the survey method. The survey that will be carried out is by directly observing the conditions and assessing factors related to fishing vessels, the data needed to support this research method is primary data. The primary data were obtained from direct observations of various activities carried out in the shipyard and the results of interviews obtained with workers in the shipyard. The data analysis used is Fishing Bone Analysis the result of this research is that this shipbuilding industry has developments that are still far from capacity, potential, needs, and the need for the development of land parameters, human resources, machinery, materials, methods or ways of working, shipping flows and production capacity
Effect of dietary lysine on the growth performance of Pangasius hypophthalmus
Get PDFThe success of intensive striped catfish (Pangasius hypophthalmus) cultivation requires quality feed that contains not only protein according to fish needs but also a complete essential amino acid profile to support the fish growth. One solution to overcome this problem is done through the addition of lysine in the feed commercial. This study aimed to examine the effect of lysine addition on the efficiency of feed utilization, growth and body composition of striped catfish (P. hypophthalmus). The study consisted of 4 (four) treatments those were with dosages of 0% / kg of feed (A); 0.6% / kg of feed (B); 1.2% / kg of feed (C); and 2.4% / kg of feed (D) of lysine for every kg of feed. The experimental diet in this study was a commercial feed in the form of pellets which was added with the lysine. A fixed feeding rate of 5%/weight of biomass/day was applied at frequency 3 times a day. The experimental fish used were striped catfish fingerling has an average weight of 4.13 0.26 g/individuals. The results showed that the addition 1,2% / kg of lysine to the diet increased SGR, EFU, FCR, PER and protein content of the body composition of striped catfish
Antioxidant activity of silver nanoparticles synthesized using Holothuria atra extract
Get PDFSea cucumber (Holothuria atra) was used as a reducing and capping agent in the green synthesis process to produce silver nanoparticles (AgNPs). The antioxidant activity of the generated silver nanoparticles was then evaluated. Seacucumber extract was mixed with the AgNO3 solution and homogenized using a magnetic stirrer to create the silver nanoparticles. It was determined that silver nanoparticle production had occurred using a UV-Vis spectrophotometer. Before being examined for antioxidant activity, the generated nanoparticles were first given a characterizing using Fourier Transform Infra Red (FTIR) spectrometers. The maximum uptake was obtained at wavelengths of 440 cm-1 using a UV-Vis spectrophotometer. Functional groups that play a role in the synthesis of nanoparticles were -OH- C=O, and C-O groups. The free radical 2,2-diphenyl-1-picrylhydrazyl (DPPH) with an absorbance maximum (517 nm) was used for antioxidant properties. The antioxidant assay showed that Silver nanoparticles had higher antioxidant activity than sea cucumber extract alone, with an IC50 value of 4 ppm.Keywords:AntioxidantSeacucumberGreen SynthesisSilver NanoparticlesDPP
Relationship of ENSO (El Nio Southernoscillation ) and monsoon index on variability of rainfall and sea surface height in coastal City Semarang, Central Java
Get PDFThe city of Semarang is one of the coastal areas in Indonesia that is prone to flooding. Flood events that often occur in the Semarang City area can be triggered by high rainfall. Variations in rainfall and sea level are closely related to global atmospheric circulation such as ENSO and regional atmospheric circulation, Monsoon. This study aims to examine the relationship between ENSO and Monsoon with the distribution of rainfall and sea level in coastal city Semarang from 2012 to 2021. Correlation and composite analysis were used to analyze the relationship and impact of ENSO and Monsoon phenomena on rainfall and sea level. The results showed the strong correlation of the ENSO index (Southern Oscillation Index) to rainfall in the JJA and SON periods. Generally, El Nio (La Nia) has an impact on increasing (decreasing) rainfall. Meanwhile, Australian Summer Monsoon Index (AUSMI) only strongly correlates with rainfall in the SON period. The westerly (eastern) wind indicated by a positive (negative) monsoon index in the SON period has the effect of increasing (reducing) rainfall. The ENSO phenomenon with sea level during the JJA period has a strong relationship. In JJA, the highest sea level (maximum tide) rises by 12.6 cm during El Nio and decreases by 0.6 cm during La Nia. Meanwhile, the lowest sea level (minimum low tide) decreased by 16.6 cm during El Nio and increased by 0.7 cm during La Nia. These results can explain the influence of global and regional atmospheric circulation on a local scale on the coast of Semarang City.Keywords:RainfallSea levelEl NioLa NiaMonsoo
Performance analysis of catch fisheries in Sabang Waters
Get PDFSabang waters is one of the centers of capture fisheries production at the tip of the Sumatera Island which has a large potential of fish resources. However, information related to the performance of capture fisheries including fish production, fishing gear, fishing fleet, number of fishermen and fishing areas is still limited. This study aims to analyse and describe information related to capture fisheries performances in the waters of Sabang. Performance data were analysed descriptive quantitatively and obtained by survey method. The results showed that the trend of capture fisheries production tends to increase by 15% annually and catches are dominated by large pelagic fish, namely tuna (Thunnus sp). The type of fishery business is dominated by fishermen who operate vessels measuring 0 - 5 GT (57.9%) with fishing areas between the coast to 2 nautical miles. Fishermen in Sabang Waters are categorized as small businesses. because use small boats and using handlines as fishing gear that aim to meet daily needs, not for business scale.Keywords:Fish productionFishing gearFishing fleetFishing groundCapture fisherie
Utilization of enzyme hydrolysis from Shrimp Head in improve the quality catfish
Get PDFProtein is one of the most important components that can support the growth and development of catfish. The price of feed with high protein content which is relatively expensive is a big problem in the catfish farming process. On the one hand, there is shrimp head waste which is a source of protein with a protein content of 42.16% - 49.8% which has not been utilized and is disposed of as waste. Through this research, the shrimp head waste was carried out by an enzyme hydrolysis process to produce shrimp soluble extract (SSE) using a protease enzyme. The SSE that has been produced is then given to catfish aged 14 days to support the addition of protein sources for the growth of catfish. During the 1 month trial, there was a significant difference in results in the treatment catfish with the addition of 2% SSE compared to the control catfish. The addition of SSE gave a very good effect on the weight of catfish which was randomly distributed in a tank containing 50 catfish with an average initial weight of 0.6-0.8 grams. The provision of SSE was carried out simultaneously with the provision of standard fish feed, namely 3 times a day. The increase in catfish weight after being treated was about 2 grams/week. This indicates that SSE can increase the growth of catfish and can be used as an alternative supplement in the future because in addition to reducing the level of pollution due to catfish waste, it can also be a new discovery in the field of fisheries
Dynamics of plankton populations as natural food for fish in a tributary of the Ogan River
Get PDFThe research was conducted to determine the abundance, diversity, uniformity, and dominance of plankton in fish stomachs and waters that are expected to provide information about water productivity. The research was carried out in a tributary of the Ogan River, Indralaya District, Ogan Ilir Regency, South Sumatra at three stations, namely Indralaya Mulya Village, Tanjung Seteko Village and Muara Penimbung Village. The method used field surveys and location determination using purposive sampling with fish stomach contents, water samples for plankton observations, and water quality parameters. Fish sampling was carried out six times in 3 months, and water samples for plankton observations were one time per month, from April to June 2018. Plankton is found in fish stomachs and waters with a total abundance of 35.6 - 448.12 ind/l plankton consisting of 8 divisions with 11 classes. The plankton diversity index has moderate diversity and moderate community stability with a value between 1.11 - 1.45. The uniformity index of plankton in the fish stomach showed small uniformity of plankton (0.41-0.67), while in the waters, at station three and station 1 in April, the uniformity was high (E values 0.72 and E 0.93). The value of the plankton dominance index is in the range of 0.27-0.37. No species dominate other species or D = 0 (0.5), with moderately polluted water qualit
The water quality monitoring of vannamei shrimp (Litopenaeus vannamei) ponds in East Tanete Riattang District, Bone Regency, Indonesia
Get PDFThe monitoring of water quality is an essential process of shrimp production. This study aimed to evaluate the water quality based on physical, chemical, and biological parameters in a vannamei shrimp pond, which is managed by an intensive system in East Tanete Riattang District, Bone Regency. The sampling of parameters was conducted from March to April 2020 at the ponds in three villages, which include Waetuo (station A), Panyula (station B), and Toro (station C). The water quality was evaluated at each sampling site based on certain factors, such as dissolved oxygen (DO), temperature, salinity, pH, ammonia, and bacterial population. The results showed that the temperature, salinity, pH, DO, and bacterial populations ranged from 26 to 30 C, 25 to 35 ppt, 5.5 to 7.0, 5.5 to 7.0 ppm, and 3.5 101 to 2.1 103, respectively. According to the National Standard of Indonesia for shrimp culture, the range of these water quality parameters was suitable for vannamei shrimp life. Meanwhile, the level of ammonia was 1.7 to 1.8 ppm, which exceeded the normal range that supports the vannamei shrimp life-cycle.Keywords:Water quality, Ponds, Litopenaeus vannamei,Ammonia,Vibriosi