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INDONESIA
Jurnal Perikanan Universitas Gadjah Mada
Published by Universitas Gadjah Mada
ISSN : 08536384     EISSN : 25025066     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology
Jurnal Perikanan Universitas Gadjah Mada are published to promote a critical review of the various investigative issues of interest in the field of fisheries between the researchers, academics, students and the general public, as a medium for communication, dissemination, and utilization of wider scientific activities.
Arjuna Subject : -
Articles 6 Documents
 1 
Search results for , issue "Vol 16, No 1 (2014)" : 6 Documents clear
kOMPOSISI IKAN HASIL TANGKAPAN JARING INSANG PADA BERBAGAI SHORTENING DI WADUK SERMO Supardjo S. Djasmani; Djumanto Djumanto
Jurnal Perikanan Universitas Gadjah Mada Vol 16, No 1 (2014)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.9135

Abstract

The aim of this study was to determine fi sh capture and composition using gill nets in various of shortening nets, as well as to obtained a suitable size of shortening nets which better productive and sustainable. The study was conducted by fi shing using gill nets 4 sheets, using gill net with mesh size of 2-inch eye openings and various shortening nets, namely 40%, 50%, 60%, and 70%. The setting gill nets were done in the afternoon and hauling the following morning day. Gill net setting were done once a week in September-October 2013. All species of fi sh gilled were collected, then measured the length and weight, as well as on the abdomen was dissected to determine sex. Data on the number and weight of the catch were analyzed descriptively, analyzed using a completely randomized design were subjected to determine the best catches statistically. The results showed that the number of individuals fi sh and the mean weight of fi sh captured in shortening 40%, 50%, 60% and 70% were not signifi cantly different. The most number of fi sh captured was in the nets with shortening of 60%, ie 392.69 (g/ trip), then on shortening of 40%, ie 333.3 g / trip, next on the shortening of 50% as much as 285.9 g/trip and the least in shortening 70% as much as 263.6 g trip. Based on the fi sh species composition, the most dominant of fi sh captured was red devil (52.5%), then tilapia mossambique (27.1%), black tilapia (17.5%), managuin (1.3%), marbel gobby (0.8%), the remaining was consisted of snake head and javain carp (0.8%). Based on sex proportion, the proportion of male fi sh in tilapia mossambique was 63.8%, black tilapia was 53.7%, and red devil was 58.2%, while the remaining was balance between male and female.
PENGKAYAAN β-KAROTEN PADA COKELAT BATANG DENGAN PENAMBAHAN Spirulina platensis Himawasesa P. Negara; Iwan Y. B. Lelana; Nurfitri Ekantari
Jurnal Perikanan Universitas Gadjah Mada Vol 16, No 1 (2014)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.9134

Abstract

The aim of this research was to determined the level of acceptance of the panelists as well as β-carotene content of the chocolate bars which is enriched with Spirulina platensis. This research used Completely Randomized Design. Spirulina platensis was added at various concentrations  0, 5, 10, 15% (w/w). Each treatment was repeated 3 times. The results showed that chocolate bar was added 5% S. platensis is the most preferred treatment by panelists, with characteristics as follows: no fishy odor, no bitter taste and its texture when in the mouth like slightly sandy. The chemical content of this product were 1,63% moisture, 3,83% ash , 9,22% protein, 56,24% fat, and 29,08% carbohydrate. Besides that, its had 70,33 μg /g of β-carotene which is equivalent to 11,72 RE /g. Consuming 30 g chocolate bar enriched S.platensis 5 % ( w/w ) per day could provide for 60-70 % of the vitamin A, served an energy of 197,81 kcal intake and 351,6 RE provitamin A or supplied 9,65% of the energy needs and fulfi ll 50% -70% of vitamin A base on recommended daily intake.
SUPLEMENTASI CRUDE ENZIM PAPAIN DALAM PAKAN PEMBESARAN IKAN BERONANG, Siganus guttatus Usman Usman; Asda Laining; Erik Sutikno
Jurnal Perikanan Universitas Gadjah Mada Vol 16, No 1 (2014)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.9149

Abstract

In intensive fi sh farming, feed costs can reach up to 70% of the total cost production, so that its effi ciency needs to be improved. The aims of this study were to improve fi sh growth rate and feed effi ciency for rabbit fi sh grow-out through supplementation of crude papain enzyme in the feed. Test fi sh were juvenile of rabbitfi sh, Siganus guttatus, with average initial weight of 40±3.5 g. Fish were stocked in 12 of 1×1×2 m3 fl oating net cages with density of 16 fi sh/cage. As dietary treatments were different dosages of crude papain enzyme namely (A) 0%, (B) 0.0125%, (C) 0.025%, and (D) 0.050%. The rabbitfi sh were fed to satiation in the morning and afternoon for 120 days. The results showed that specifi c growth rate, survival rate of the fi sh, feed effi ciency, protein effi ciency ratio, and the level of feed intake were not signifi cantly different (P>0.05) among treatments. However, there was a tendency that increasing of supplementation level of crude papain enzyme in diets, fi sh growth rate, feed effi ciency, and protein effi ciency ratio also increased.
Sasi in Kei Island: Transformation of Coastal Resources Managementby Community in Tanimbar Kei Island, Maluku, Indonesia Anes D. Jayanti; Katsuya Osozawa
Jurnal Perikanan Universitas Gadjah Mada Vol 16, No 1 (2014)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.9126

Abstract

Sasi is a local Indonesian traditional resources management system, which manages responsibilities and marine tenure rights in Maluku. Dwellers have been using this system for over 400 years and it consists of spatial and temporal prohibitions on harvesting crops. Sasi was viewed as an appropriate method to achieve harmony between man and nature. It has been noted that sasi has been affected by many factors. These factors have allowed sasi to exist in some areas and become extinct in other areas, which are very essential indicators when considering how to effectively achieve sustainability. Studyingthe factors that transformedsasi, understanding villagers’ perception and reaction to sasi’s transformation and how they planned to sustainably manage their natural resources will support the community based management model for eastern Indonesia. This research was conducted in Tanimbar Kei Island, which actively follows the rules of sasi. To determine the effectiveness of sasi in terms of social and environmental sustainability, demographic, social, politic and economic factors were studied. This study used the triangulation method, which consists of literature studies, area studies, in-depth interviews and questionnaires. The data was analyzed with qualitative analysis, institutional analysis and sustainability analysis. The results show a change in perceptions and community institutions. The dominant factor affecting sasi is the political aspect, especially concerning policy autonomy and assistance from NGOs. The community trust in sasi and other community members ensures that sasi’s transformation does not cause it to lose its identity and function.
PENGARUH LEVEL KARBOHIDRAT DAN FREKUENSI PAKAN TERHADAP RASIO KONVERSI PAKAN DAN SINTASAN JUVENIL Litopenaeus vannamei Zainuddin Zainuddin; Haryati Haryati; Siti Aslamsyah; Surianti Surianti
Jurnal Perikanan Universitas Gadjah Mada Vol 16, No 1 (2014)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.9150

Abstract

This study aims to determine the level of carbohydrates and feeding frequency on feed convertion ratio and survival of shrimp vanamei juvenile. Research using completely randomized design by factorial patern with two factors and three replications. Treatments were factor A (carbohydrate levels, namely 18, 32, 40 and 50%), and factor B (frequency of feeding 2, 4 and 6 times per day). Shrimp vanamei which was used have an average weight of 0.3 g per individual. Feed dose was 10% of the body weight of shrimp with the feeding frequency adapted to the treatment. The results showed that the factor levels of carbohydrate feeding, feeding frequency and the combination of both give a signifi cant effect on feed convertion ratio of shrimp vanamei juvenile with the best combination of 50% carbohydrate level and feeding frequency 6 times per day. Treatment levels of carbohydrates, feeding frequency and combination of both give no signifi cant effect on survival of shrimp vanamei juvenile.
APLIKASI MODEL DINAMIK DAMPAK EUTROFIKASI DAN SEDIMENTASI BAGI PENGENDALIAN KERUSAKAN TERUMBU KARANG DI PERAIRAN SULAWESI SELATAN Chair Rani; M. Natsir Nessa; Jamaluddin Jompa; Syamsuddin Thoaha; Ahmad Faizal
Jurnal Perikanan Universitas Gadjah Mada Vol 16, No 1 (2014)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (314.517 KB) | DOI: 10.22146/jfs.9133

Abstract

The aplication of dynamic model to describe the effect of eutrophication and sedimentation on coral reefs damage in a wider scope. The trial were performed in two main areas of coral reefs in South Sulawesi, namely in Spermonde Archipelago and in Sembilan Archipelago in Bone Bay. Retrieval of data include measurements of water quality (nitrate and phosphate concentration) and the rate of sedimentation. While collecting of ecological data, namely macroalgae cover, coral reef cover, and species of herbivores and its abundance. Data was collected on monthly for 4 months at six stations/islands. The data was taken at two points on each island as replicates. Oceanographic data were taken every month, while the ecological data were taken at the end of the study. Nutrients concentration (nitrat and phosphat) and sedimentation rate were measured in laboratory. The result of the model test showed that the developed model is valid and broad-spectrum and therefore can be applied to other areas already impacted by eutrofi cation and sedimentation. The results of the execution of the model shows that all stations on the island leads Phase shift, namely the dominance of macroalgae cover in the future (about 2-4years in the future).

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