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Study of Groundwater Quality in Magelang City Due to the Impact of Domestic and Industrial Waste Muhammad Tri Aji; Abdul Qadir Jailani
Journal of Aquaculture Science Vol 5 No 2 (2020): Journal of Aquaculture Science
Publisher : Airlangga University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31093/joas.v5i2.122

This study aims to determine the current condition of groundwater quality in the city of Magelang due to the disposal of domestic and industrial waste. The analysis used was to measure physical, chemical, and biological parameters in situ and ex-situ. The research method used purposive sampling and then analyzed descriptively using water quality standards. The results showed that the physical parameters were still in good condition, while the values (TSS) of Total Suspended Solid and Total Dissolved Solid was 3.7 mg / L and 227.95 mg / L. On the other hand, there was a fluctuation in the pH value at several water stations which showed a tendency to be acidic. Furthermore, the nitrate levels at research stations 1,6,7 and 9 showed values that exceeded the established threshold of 10 mg/L. Furthermore, for the BOD value that has a value of more than 2 mg / L as a requirement for entering class 1, groundwater quality is safe for hygienic, Chemical Oxygen Demand has a value that exceeds the maximum requirement of 10 mg/L in all research station and is categorized as heavy pollution. The total coliform value that exceeds the water quality standard for sanitation hygiene according to Permenkes No. 32 of 2017 at 50 MPN / 100ml. The quality of groundwater in the Magelang can be used for drinking water, provided that its use must go through the cooking process first.Keywords: Groundwater quality, waste, Magelang

Sublethal Toxicity of Organophosphate Pesticides and its Effect on Hematology Parameter, Histopatology Hematopoietic Organ of Silver Rasbora (Rasbora argyrotaenia) Lailatul - Lutfiyah
Journal of Aquaculture Science Vol 5 No 2 (2020): Journal of Aquaculture Science
Publisher : Airlangga University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31093/joas.v5i2.94

Pesticides are pollutants that are found in rice fields and rivers. Pesticides that are often used by farmers in Indonesia in eradicating insects are organophosphate insecticides, where they can eradicate insects that are very toxic to fish due to strong neurotoxic substances that inhibit AchE (Acetylcholinesterase) activity. The research aims to examine the effect of organophosphate pesticides on hematology and histopathology of hematopoietic organs in silver rasbora fish. The research method used is an experimental method with a CRD. The parameters observed were hematology and histopathology hematopoietic organ (liver and kidney). The results of this study showed a hematological change in silver rasbora fish where there was a decrease in total erythrocytes (0,59±0,004) and hemoglobin (2,5±0,1) while total leukocytes increased (245,35±15,78). Also, there are differential changes in leukocytes, namely an increased in the number of monocytes (5±1) and neutrophils (24±3), but lymphocytes have decreased in number (72±1). The Histopathology of the fish liver also can found in this research, those damages that are found are erythrocyte infiltration, necrosis picnosis, and karyolysis. Histopathology of fish kidney also can found cloudy sweling, necrosis karyolysis and tubular necrosis.

Botia (Chromobotia macracanthus Bleeker, 1852) Potential Broodstock Rearing With and Without Shelter asep permana
Journal of Aquaculture Science Vol 5 No 2 (2020): Journal of Aquaculture Science
Publisher : Airlangga University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31093/joas.v5i2.127

Botia fish (clown loach) growth is relatively slow, taking 4-5 months to reach marketable size (2 inch) and 3 years to achieve initial gonad maturation in female and 1 year in male fish. Environmental degradation and overfishing are factors triggering the production of newly potential broodstock. This study aimed to observe the growth response of potential broodstock through rearing technique with and without shelter. Fish were kept inside the aquaria sized 80x40x30 cm with 20 cm water height on the recirculation system. Fish used for shelter treatment were: Total length ± 7.7 cm, height ± 2.09 cm, and weight ± 7.33 g; for no shelter treatment were: Total length ± 6.7 cm, height ± 1.88 cm, and weight ± 4.59 g. Fish were stocked 10 fish / aquarium and fed 3 times / day by at satiation method. Parameters observed were total length, height and weight improvement also water quality. The results showed that growth and feed efficiency had better value when reared with shelter than without shelter.Keyword: Grow-out, Chromobotia macracanthus, shelter

Tilapia Lake Virus (TiLV) Examination on Commodities of Tilapia (Oreochromis niloticus) nadiatul husna
Journal of Aquaculture Science Vol 5 No 2 (2020): Journal of Aquaculture Science
Publisher : Airlangga University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31093/joas.v5i2.95

The increasing utilization of the potential for fishery commodities and the traffic of fishery commodities between countries and between areas in the Indonesian territory is an opportunity for the risk of entry and spread of fish pests and diseases. One of the pathogens that are acute in nature that can cause great harm is a virus. The virus that often attacks freshwater fish is the Tilapia Lake Virus (TiLV). Virus examination using conventional PCR methods, starting with necropsy, fixation, extraction, amplification, electrophoresis, and reading the results. The aim of this study was to detect the presence of TiLV infection in freshwater fish commodities using the Polymerase Chain Reaction PCR method. This research was conducted on 23 December 2019-27 January 2020 at the Fish Quarantine Station for Quality Control and Safety of Fishery Products in Yogyakarta. The samples examined were 14 samples of tilapia. Based on the test results, it was found that 2 positive samples contained TiLV RNA which showed a band at 250 bp length (base pairs) in tilapia seeds.Keywords: Tilapia Commodity, PCR method, TiLV.

Front Matter JoAS Vol 5 No 2 2020 Rizki Dwi Akbar
Journal of Aquaculture Science Vol 5 No 2 (2020): Journal of Aquaculture Science
Publisher : Airlangga University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31093/joas.v5i2.132

Technical Study and Financial Analysis of Red Tilapia Cultivation (Oreochromis niloticus) in Running Water System Using Different Feeds at PT Ikan Bangun Indonesia (IWAKE) Bogor, West Java Raihan Maulana Firdaus; Mugi Mulyono; Mochammad Farchan
Journal of Aquaculture Science Vol 5 No 2 (2020): Journal of Aquaculture Science
Publisher : Airlangga University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31093/joas.v5i2.97

Red tilapia is one of the commodities that can be cultivated in the running water pond. With the technology of running water ponds that depend on feeding. The cost of feed in production ranges from 60-70% of the total cost. Therefore, innovation in feed is needed to reduce production costs. Then an experiment was carried out aimed at finding out the efficiency in feeding maggot and pellet feed in red tilapia in the running water pond system. Some experiments were carried out by giving full feed pellets and substitution in maggot feed 50%. This research was conducted 75 days from March 2, 2020 to May 15, 2020. Observed parameters were production technique from stocking to harvest, frequency and dose, feed conversion ratio, daily weight gain, survival rate, and parameters water quality (pH, temperature, dissolved oxygen and water discharge). Daily average weight observations are carried out once a week. By providing different feeds, FCR is higher and pellet feed is superior to maggot and pellet combination feed. Pellet feeds produce FCR 2.8 and maggot and pellet combination feeds produce 3.79. With the loss of using maggot mixed feed IDR 15.709.111. Based on these results maggot feed experiments given did not provide a better effect than giving full pellet feed.Keywords: Experiment, red tilapia, different feeding, maggot, FCR, Financial Analysis.

Back Matter Joas Vol 5 No 2 2020 Rizki Dwi Akbar
Journal of Aquaculture Science Vol 5 No 2 (2020): Journal of Aquaculture Science
Publisher : Airlangga University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31093/joas.v5i2.133

The Effect of Using Different Light Colors on the Growth of Nanochloropsis sp Rehuli damanik
Journal of Aquaculture Science Vol 5 No 2 (2020): Journal of Aquaculture Science
Publisher : Airlangga University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31093/joas.v5i2.111

Natural feed Nannochloropsis sp. is one of the limiting factors for cultivated creatures. However, the cultivation of natural food is not yet optimal in terms of quantity, one of the efforts that can be done to optimize this is by using lights produced from sunlight to improve the quality of Nannochloropsis sp. The design in this study was a Completely Randomized Design (CRD) consisting of 4 preparations and 3 replications. The treatments taken are the color of the white light (P1), the color of the red light (P2), Green (P3) and Blue (P4). The parameters that increase are the specific growth rate (LPS), time of doubling, growth curve, water quality. The observations obtained at the time of LPS were collected between 0.200-0.248 cells / ml / day, doubling time 2.806-3.476 then the temperature measurement results were between 30.6-32 0C pH 6.2-7.5, salinity 26-27 ppt and DO 5,7-6,7 ppm. Based on the results of analysis of variance conducted on the given color light has a real influence on the specific growth rate and time multiplication.Keywords: Light, Nannochloropsis sp., Growth

Description of Erythrocyte, Leucocite and Growth Performance of Green Catfish (Hemibagrus nemurus) Feeded With Addtion of Commercial Bread (Saccharomyces cerevisiae) Rizal Akbar Hutagalung
Journal of Aquaculture Science Vol 5 No 2 (2020): Journal of Aquaculture Science
Publisher : Airlangga University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31093/joas.v5i2.121

Baung fish (Hemibagrus nemurus) is a freshwater fish species native to Indonesian public waters, particularly in Sumatra and Kalimantan. Baung fish has thick, soft meat, delicious taste, and has high economic value. This research was conducted at the Workshop for Fisheries Cultivation Technology Study Program, using a container in the form of a fiber tub which is divided into 4 parts (100cm x 50cm x 7 cm) using waring. The test organism was fish baung with fish size 5cm-7cm, which were spread as many as 10 fish/bulkhead and kept for 60 days. This study used a completely randomized design (CRD) with 4 treatments and 3 replications. The treatment used was the addition of S. cerevisiae yeast to artificial feed (pellets) with different doses. Where the control treatment (K): without the addition of S. cerevisiae, treatment A (P1): with a dose of S. cerevisiae 0.2%, treatment B (P2): addition of S. cerevisiae by 0.5%, and treatment C (P3 ): S. cerevisiae dose of 0.8%. Application of S. cerevisiae uses a coating method with a frequency of 2 times a day. The parameters observed included fish health status (total red blood cells and white blood cells, hematocrit, hemoglobin, and blood glucose) as well as production parameters such as absolute growth, daily growth rate, total feed consumption, feed conversion ratio, survival rate. The results showed that the absolute growth rate and the highest daily growth rate were found in treatment (P2), respectively 21.86 ± 10.05 grams and 0.86 ± 0.38%. On the other hand, the lowest FCR value was found in treatment (P3), namely 1: 1.25 ± 0.60. This shows that the provision of S. cerevisiae has a positive impact on increasing red blood cells, white blood cells, and the growth performance of the fish. Keywords: Erythrocytes, Leukocytes, Growth, Hemibagrus nemurus

Sublethal Toxicity of Organophosphate Pesticides and its Effect on Hematology Parameter, Histopatology Hematopoietic Organ of Silver Rasbora (Rasbora argyrotaenia) Lailatul - Lutfiyah
Journal of Aquaculture Science Vol 5 No 2 (2020): Journal of Aquaculture Science
Publisher : Airlangga University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31093/joas.v5i2.94

Pesticides are pollutants that are found in rice fields and rivers. Pesticides that are often used by farmers in Indonesia in eradicating insects are organophosphate insecticides, where they can eradicate insects that are very toxic to fish due to strong neurotoxic substances that inhibit AchE (Acetylcholinesterase) activity. The research aims to examine the effect of organophosphate pesticides on hematology and histopathology of hematopoietic organs in silver rasbora fish. The research method used is an experimental method with a CRD. The parameters observed were hematology and histopathology hematopoietic organ (liver and kidney). The results of this study showed a hematological change in silver rasbora fish where there was a decrease in total erythrocytes (0,59±0,004) and hemoglobin (2,5±0,1) while total leukocytes increased (245,35±15,78). Also, there are differential changes in leukocytes, namely an increased in the number of monocytes (5±1) and neutrophils (24±3), but lymphocytes have decreased in number (72±1). The Histopathology of the fish liver also can found in this research, those damages that are found are erythrocyte infiltration, necrosis picnosis, and karyolysis. Histopathology of fish kidney also can found cloudy sweling, necrosis karyolysis and tubular necrosis.

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
Muhammad Hanif Azhar

Contact Email
joas@psdku.unair.ac.id

Phone
-

Journal Mail Official
joas@psdku.unair.ac.id

Editorial Address
-

Location
Kota surabaya,

Jawa timur

INDONESIA

Abstract

Abstract

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Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Muhammad Hanif Azhar

Contact Email joas@psdku.unair.ac.id

Phone -

Journal Mail Official joas@psdku.unair.ac.id

Editorial Address -

Location Kota surabaya, Jawa timur INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Muhammad Hanif Azhar

Contact Email
joas@psdku.unair.ac.id

Phone
-

Journal Mail Official
joas@psdku.unair.ac.id

Editorial Address
-

Location
Kota surabaya,

Jawa timur

INDONESIA