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Journal of Aquaculture Science
Published by Universitas Airlangga
ISSN : 25500910     EISSN : 25794817     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Journal of Aquaculture Science (JoAS) merupakan media pertukaran informasi dan karya ilmiah pada bidang Akuakultur meliputi teknik budidaya, teknologi, reproduksi dan penyakit ikan pada budidaya. Secara umum, Journal of Aquaculture Science menerima artikel hasil penelitian review artikel dan komunikasi singkat. Journal of Aquaculture Science terbit 2 kali dalam setahun (April dan Oktober).
Arjuna Subject : -
Articles 6 Documents
 1 
Search results for , issue "Vol 3 No 2 (2018): Journal Of Aquaculture Science" : 6 Documents clear
The Effect of different Stocking Density on Ammonia Content (NH3) and Nitrite (NO2) in Catfish (Clarias Sp.) with Biofloc Aquaculture System Nizar Fanani, Ahmad; Setya Rahardja, Boedi; ., Prayogo
Journal of Aquaculture Science Vol 3 No 2 (2018): Journal Of Aquaculture Science
Publisher : Airlangga University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (116.454 KB) | DOI: 10.31093/joas.v3i2.57

Abstract

The accumulation of waste in aquaculture can cause inorganic toxins  named ammonia (NH3) and nitrite (NO2) in water. Biofloc technology is one of the new alternative to solve the problem of ammonia (NH3) and nitrite (NO2) in aquaculture techniques adapted from sewage treatment. This study aims to determine the effect of stocking density of catfish (Clarias sp.) using biofloc system against ammonia and nitrite. This study used an experimental method to completely randomized design (CRD). Statistical analysis using Analysis of Variant (ANOVA) to determine the effect of treatment.The results of the study showed that the effect of stocking density of catfish (Clarias sp.) were significantly different (P <0.05) against ammonia (NH3). The lowest average production levels of ammonia (NH3) was the PO treatment (stocking density 15 fishes/15 L) of 0.1689 ± 0.0052, and the highest was treatment P3 (stocking density 30 fishes /15 L) of 0.1819 ± 0.0016. Effect of stocking density of African catfish (Clarias sp.) was not significantly different (P> 0.05) to nitrite (NO2). The lowest average content of nitrite production (NO 2) was the PO treatment (stocking density 15 fishes/15 L) of 0.0358 ± 0.0028 and the highest was P3 treatment (stocking density 30 fishes/15 L) of 0.0388 ± 0.0042. During the culture. temperature was  26,4-29,70C, dissolved oxygen was 5.2 to 8.3 mg / L and pH between 7.01 to 8.66. Keywords : Biofloc, ammonia, nitrite
Identification of Causes of Mass Death Of Gurami Fish (Osphronemus gouramy) In Gurami Fish Cultivation Sentra, Desa Beji, Kedung Banteng District, Banyumas District, Central Java Achmad Khumaidi; Aris Hidayat
Journal of Aquaculture Science Vol 3 No 2 (2018): Journal Of Aquaculture Science
Publisher : Airlangga University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31093/joas.v3i2.53

Abstract

Kasus kematian massal ikan Gurami di Sentra Budidaya Ikan Gurami, Desa Beji, Kecamatan Kedung Banteng, Kabupaten Banyumas, Jawa Tengah berdampak pada menurunnya produksi telur dan benih ikan Gurami. Penelitian ini bertujuan untuk mengidentifikasi patogen penyebab kematian pada ikan Gurami. Metode yang digunakan metode survei dengan pengambilan sampel secara acak, kemudian diidentifikasi keberadaan patogen pada sampel ikan Gurami. Hasil identifikasi patogen pada ikan Gurami menunjukkan adanya infeksi Bakteri (Aeromonas hydrophila, Aeromonas sobria), Parasit (Henneguya sp., Trichodina sp., Vorticella sp.) dan Jamur (Aspergillus sp.). Penelitian ini menunjukkan bahwa kematian massal pada ikan Gurami disebabkan oleh serangan bakteri, parasit, dan jamur.Kata Kunci: ikan Gurami, kematian massal, bakteri, parasit, jamur.
Dietary Supplementation of Zinc to Improve Pacific White Shrimp (Litopenaeus vannamei) Immune System Adni Oktaviana
Journal of Aquaculture Science Vol 3 No 2 (2018): Journal Of Aquaculture Science
Publisher : Airlangga University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31093/joas.v3i2.54

Abstract

This study aimed to determine the effect of zinc supplementation to improves immune responses on the pacific white shrimp (L. vannamei).This study consist of two treatments with four replicates. Dietary zinc supplementation 45 mg/kg of feed (P) anda without dietary zinc supplementation (C). This study was conducted for five weeks. The result showed significantly different on growth performance and haemocytes total. However, its has no significantly different on survival rate of the shrimp. Keywords: Pacific White Shrimp, Total Haemocyte Count, Zinc
Bioflokulan Materials from Carrageenan and Agar on Seaweed Harvesting Process of Phytoplankton Dunaliella salina Annur Ahadi Abdillah; Mochammad Amin Alamsjah; M. Nur Ghoyatul Amin
Journal of Aquaculture Science Vol 3 No 2 (2018): Journal Of Aquaculture Science
Publisher : Airlangga University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31093/joas.v3i2.55

Abstract

Harvesting microalgae is an important part in the culture system to produce higher crop biomass. Microalga Harvesting can be done by several techniques such as centrifugation, filtration, sedimentation, flocculation, ultrasonic vibration, and using filter. The technique currently used on an industrial scale is flocculation. This technique is used because it is more quickly and efficiently. Flocculants safe materials are polymers of polysaccharide seaweed. The study was conducted to determine the efficiency of the use of flocculants from alginate, carrageenan, so that the flocculation process microalgae Dunaliella salina. Flocculation process at the 50-minute show flocculation by material alginate by 30.52%, 22.85% by carrageenan, 11 % by Agar, plankton without flocculation make flocculates only amounted to 3.96%. Flocculation process at 240-minutes unchanged where carrageenan increased flocculation becomes 39.84%. Agar increased to 31, 48%. Plankton added flocculant alginate did not experience significant changes that just turned into 30.89%. The research results Show best flocculation activity is carrageenan where flocculation speed equal to alginate that has been frequently used as flocculants.Keyword : Dunaliella salina, flocculants, Carrageenan, Alginate, Agar
Conversion Rate and Feed Efficiency of Silver Pompano Fish (Trachinotus blochii) With Different Frequency Giving Ibrahim Saputra; Wiwin Kusuma Atmaja Putra; Tri Yulianto
Journal of Aquaculture Science Vol 3 No 2 (2018): Journal Of Aquaculture Science
Publisher : Airlangga University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31093/joas.v3i2.56

Abstract

The value of conversion rate and feed efficiency is a parameter for determining the quality, treatment, or feed given to the growth of Silver Pompano (Trachinotus blochii). The purpose of this study was to determine the effect of feeding frequency on feed conversion and efficiency and survival of Silver Pompano. The research method used was a Completely Randomized Design (RAL) with 3 treatments (Control namely feeding once a day, A was feeding 2 days, and B was feeding once every 3 days) with 3 replications. The best results were K treatment at 2.11 g (feed conversion ratio), 47.32% (feed efficiency), and 100% (survival). The conclusion of this study is that the treatment given during the study by ANOVA analysis did not give a significant effect on the conversion value and feed efficiency. Feeding with a frequency of 1 time a day (control) shows the best weight growth and can be applied to cultivation. Keywords: conversion rate, feed efficiency, Silver Pompano
The Effect of different Stocking Density on Ammonia Content (NH3) and Nitrite (NO2) in Catfish (Clarias Sp.) with Biofloc Aquaculture System Ahmad Nizar Fanani; Boedi Setya Rahardja; Prayogo .
Journal of Aquaculture Science Vol 3 No 2 (2018): Journal Of Aquaculture Science
Publisher : Airlangga University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31093/joas.v3i2.57

Abstract

The accumulation of waste in aquaculture can cause inorganic toxins  named ammonia (NH3) and nitrite (NO2) in water. Biofloc technology is one of the new alternative to solve the problem of ammonia (NH3) and nitrite (NO2) in aquaculture techniques adapted from sewage treatment. This study aims to determine the effect of stocking density of catfish (Clarias sp.) using biofloc system against ammonia and nitrite. This study used an experimental method to completely randomized design (CRD). Statistical analysis using Analysis of Variant (ANOVA) to determine the effect of treatment.The results of the study showed that the effect of stocking density of catfish (Clarias sp.) were significantly different (P <0.05) against ammonia (NH3). The lowest average production levels of ammonia (NH3) was the PO treatment (stocking density 15 fishes/15 L) of 0.1689 ± 0.0052, and the highest was treatment P3 (stocking density 30 fishes /15 L) of 0.1819 ± 0.0016. Effect of stocking density of African catfish (Clarias sp.) was not significantly different (P> 0.05) to nitrite (NO2). The lowest average content of nitrite production (NO 2) was the PO treatment (stocking density 15 fishes/15 L) of 0.0358 ± 0.0028 and the highest was P3 treatment (stocking density 30 fishes/15 L) of 0.0388 ± 0.0042. During the culture. temperature was  26,4-29,70C, dissolved oxygen was 5.2 to 8.3 mg / L and pH between 7.01 to 8.66. Keywords : Biofloc, ammonia, nitrite

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