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INDONESIA
e-Jurnal Rekayasa dan Teknologi Budidaya Perairan
Published by Universitas Lampung
ISSN : 23023600     EISSN : 25975315     DOI : -
Core Subject : Science,
Computer Science & IT Earth & Planetary Sciences
e-JRTBP is a periodical journal that serves as a means of scientific communication and to disseminate research results. Fields of study include fisheries cultivation, management, and utilization of fishery resources. e-JRTBP is published twice a year, February and October.
Arjuna Subject : -
Articles 6 Documents
 1 
Search results for , issue "Vol 8, No 2 (2020)" : 6 Documents clear
THE EFFECT OF PHYTASE ENZYMES ADDITION ON ARTIFICIAL FEED ON HOVEN’S CARP GROWTH, Leptobarbus hoevenii (Bleeker, 1851) Nora Sintia; Deny Sapto Chondro Utomo; Indra Gumay Yudha
e-Jurnal Rekayasa dan Teknologi Budidaya Perairan Vol 8, No 2 (2020)
Publisher : University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (420.556 KB) | DOI: 10.23960/jrtbp.v8i2.p991-1000

Abstract

Hoven’s carp is a freshwater fish found in Indonesian. This study aims to study the effect of the addition of phytase enzymes with different doses on commercial feed on the growth rate of hoven’s carp and determine the dose of the phytase enzyme that is best for the growth of sooty fish. This research was conducted for 70 days at the Fisheries Cultivation Laboratory, Department of Fisheries and Marine Resources, Faculty of Agriculture, University of Lampung. This study used a completely randomized design with 4 treatments and 3 replications. Treatment A without the administration of phytase enzymes, B giving phytase enzymes 250 mg/kg of feed, C giving phytase enzymes 500 mg/kg feed, D giving phytase enzymes 750 mg/kg of feed. The parameters observed were absolute length growth, absolute weight growth, daily growth rate, SR, FCR, and protein retention. The results showed that the administration of phytase enzymes had an effect on fish growth with a dose of phytase enzyme 750 mg/kg of feed showing good results.
THE EFFECT OF IMMERSION OF MANGROVE Avicennia alba (Tomlinson, 1986) LEAF EXTRACT WITH DIFFERENT CONCENTRATIONS IN PREVENTING BACTERIAL DISEASE Vibrio harveyi (Johnson & Shunk, 1936) IN VANAME SHRIMP (Litopenaeus vannamei) (Boone, 1931) Farida, Eka Nur; Diantari, Rara; Harpeni, Esti; Wardiyanto, Wardiyanto; Hasani, Qadar; Yulianto, Herman; Yusuf, Maulid Wahid; Susanti, Oktora
e-Jurnal Rekayasa dan Teknologi Budidaya Perairan Vol 8, No 2 (2020)
Publisher : University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (169.304 KB) | DOI: 10.23960/jrtbp.v8i2.p1001-1008

Abstract

Vibriosis is a disease that often attack shrimp culture, some of the most dangerous types of Vibrio bacteria are V. harveyi. The use of natural materials is an alternative that can be applied to prevent bacterial disease. One of the mangrove species that has an antibacterial compound is A. alba. A. alba has alkaloid, saponins, and flavonoids compounds that can inhibit the function of cytoplasmic membranes and energy metabolism in bacteria. This study was conducted to determine the effectiveness of A. alba leaf extract A. alba in inhibiting V. harveyi disease in vaname shrimp (Litopenaeus vannamei). This research was conducted in several stages, namely extraction of mangrove leaves, both in vivo and in vitro. The highest SR, RPS and MTD values were obtamed at a concentration of 250 mg/l with each value of 80 %, 60 %, 75th respectively hour. Mangrove leaf extract A. alba was able to prevent diseases caused by the bacteria V. harveyi, with the best results at an extract concentration of 250 mg/l where the concentration can significantly higher SR, RPS, and MTD compared to other treatments.
DETERMINATION OF CELL TYPE AND HAEMOCYTE MORPHOMETRIC CHARACTERISTICS OF WESTERN AUSTRALIA FRESHWATER CRAYFISH (Cherax cainii) AT DIFFERENT TEMPERATURES IN VITRO Prastowo, Bambang Widyo; Lareu, Ricky; Caccetta, Rima; Fotedar, Ravi
e-Jurnal Rekayasa dan Teknologi Budidaya Perairan Vol 8, No 2 (2020)
Publisher : University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (511.692 KB) | DOI: 10.23960/jrtbp.v8i2.p1009-1028

Abstract

The purpose of this study was to identify and morphologically characterize the hemocyte cell types of freshwater crayfish, Cherax cainii. In addition to morphological observations using a light microscope (LM) and electron transmission microscope (TEM), a flow cytometer (FCM) is also used. Three main types of haemocyte of C. cainii were identified by LM, TEM, and FCM. Determination of haemocyte by LM based on the number, size of cytoplasmic granules and the ratio of N:C. These cells are Hyaline (HC), Small Granule (SGC), and Large Granule (LGC) cells. Three types of haemocyte were also observed by TEM based on cell and nucleus size, granule diameter, number of cytoplasmic granules per cell and N:C. Haemocyte population was successfully detected with FCM based on forward scatter (FSC) signals, versus side scattering signals/side scatter (SSC), with plot data via scatter parameter gating. Three cluster formations were observed, which were temporarily classified as SGC, LGC, and HC regions. Morphometric analysis was performed with TEM on C. cainii haemocyte to measure various cellular features. Some morphological features vary between types of haemocyte and are also affected by temperature. Total hemocyte count (THC) and differential hemocyte count (DHC) are calculated using FCM. THC increases with higher temperatures, from 1,9 x 106 /ml at 20 °C to 4.9 x 106 /ml at 30 °C.  The most abundant hemocyte at all temperatures is HC, followed by SGC and LGC.
INFLUENCES OF LAMP IRRADIATION EXPOSURE ON GROWTH AND SURVIVAL OF JUVENILE SNEAKHEAD FISH Channa striata (Bloch, 1793) Triyanto, Triyanto; Tarsim, Tarsim; Utomo, Deny Sapto Chondro
e-Jurnal Rekayasa dan Teknologi Budidaya Perairan Vol 8, No 2 (2020)
Publisher : University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (269.467 KB) | DOI: 10.23960/jrtbp.v8i2.p1029-1038

Abstract

The research has been conducted by February to March 2018 in the Laboratory of Aquaculture, Faculty of Agriculture, Lampung University. The research aim of this to acknowledge the influences of lamp irradiation exposure on growth and survival of juvenile sneakhead fish (Channa striata). This research used a completely randomized design with five treatments, A (12B;12D), B (9B;15D), C (6B;18D), D (3B;21D), and E (0B;24D) with three replications. The research showed that the effect of the length of light irradiation exposure has a significant effect on growth and survival of juvenile snakehead fish. The best treatment found in treatment D, that the resulted highest value of weight growth (5,46 g), daily weight growth (0,121 g/day), length growth (5,37 cm), daily length growth (0,119 cm/day), and survival rate of 97%.
Production Analysis of Green Mussel (Perna viridis) in Lampung Province Sulvina Sulvina; Zainal Abidin; Supono Supono
e-Jurnal Rekayasa dan Teknologi Budidaya Perairan Vol 8, No 2 (2020)
Publisher : University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (244.607 KB) | DOI: 10.23960/jrtbp.v8i2.p975-984

Abstract

This study was conducted to find out factors affecting and level of mussel production, level of efficiency of using the tools and materials in cultivation process and whether the cultivation of mussels in Pasaran. This study was analyzed using Cobb-Douglass. The study were analyzed in quantitative descriptive, multiple linear regression analysis, and analysis of efficiency. The dependent variable (Y) is the result of production of green mussels cultivation and free variables are the number of bamboos (X 1), the amount of strap (X2), grouper (X3) and labor (X4). Mussel fisherman in Pasaran NPM with Px calculated to obtain the level of efficiency of each factors of production in messels cultivation. Studies show that the most influential factors production are variable bamboo, rope and labor. While the results of analysis the level of efficiency of using tools and materials is not efficient. The number of bamboo and labor should be reduced, because it tends to be a waste and not profitable either technically or economically. The value of the return to scale of 1.22 showed cultivation mussels are on increasing return to scale.
MASCULINIZATION OF Betta splendens LARVAE WITH JAVA PEPPER (Piper retrofractum Vahl) EXTRACT THROUGH IMMERSION Prayoga, Ajie; Syarif, Ahmad Fahrul; Prasetiyono, Eva; Sari, Suci Puspita
e-Jurnal Rekayasa dan Teknologi Budidaya Perairan Vol 8, No 2 (2020)
Publisher : University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrtbp.v8i2.p985-990

Abstract

Siamese betta fighting fish (Betta splendens) is the one of exports comodity of ornamental fish in Indonesia, but the problems of culture that fish is sex ratio of female higher than male. This research aimed to evaluate the effectiveness of java long pepper (Piper retrofractum Vahl) for betta siamese fighting fish masculinizations through larval immersion. This research was designed by randomized completely design with three treatments of different java long papper doses (0,5 mg/L, 1 mg/L, and 2 mg/L), positive control (17α-metiltestosteron 20 mg/L), and negative control with there replications for each treatments. The treatments of java long pepper doses was given to thirty larvae (D4) through immersion during 24 hours. The research showed that java long pepper extract with dose 2 mg/L obtained the higher male ratio (59,82%) compared with dose 0,5 mg/L (45,11%), 1 mg/L (53,92%), and negative control (23,23%). Java long pepper extract with dose 2 mg/Lincreased the male ratio 36,59% compared with negative control. Java long pepper extract have no effect for survival rate of siamese betta fighting larvae during cultured.

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