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Alim Isnansetyo
Fakultas Pertanian UGM
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology

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KEMAMPUAN ADAPTASI KEPITING BAKAU (Scyla serrata) TERHADAP PERUBAHAN SALINITAS AIR Retno Widaningroem; Alim Isnansetyo
Jurnal Perikanan Universitas Gadjah Mada Vol 1, No 1 (1996)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.8843

Abstract

Objectives of this research were to know water salinity change which can be use for culturing and fattening of mud crab, and to know adaptation of mud crab on water salinity change. The research used modified bioassay method and completely randomized factorial design consisted of two factor namely water salinity change (0,5 and 10 ppt of water salinity change) and duration of water salinity change (3 and 6 hours).The result indicated that decreasing salinity by 5 and 10 ppt per 3 and 6 hours from 20 to 0 ppt could be adapted by mud crab. As well as increasing if salinity by 5 and 10 ppt per 10 and 6 hours from 20 to 5 ppt could be adapted by mud crab. Mud crab was able to adapt water salinity change by 5 and 10 ppt per 3 and 6 hours from 0 to 50 ppt.
PENAMBAHAN VITAMIN C PADA IKAN LELE DUMBO (Clarias gariepinus) UNTUK MENINGKATKAN TANGGAP KEBAL TERHADAP VAKSIN Aeromonas hydrophilia Alim Isnansetyo
Jurnal Perikanan Universitas Gadjah Mada Vol 1, No 1 (1996)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.8846

Abstract

Motile Aeromonas Septicimia is a dangerous disease on fresh water fish especially walking catfish and carp. Vaccination against the disease has been developed in Indonesia. However, there were high result variations of the vaccination. Immune response is influenced by level of vitamin C dietery. Objective of this experiment was to know effect of vitamin c levels on walking catfish’s specific immune respose. The levels of vitamin (0, 50, 500, and 1000 mg ascorbic acid (AA)/kg feed) were given to the fish. Immersion vaccination for 30 minutes (108 sel/ml) was carried out 15 days after feeding trial. Challenge test was conducted by injection of 0,2 ml bacteria suspension (LD80 concentration) was carried out 15 days after vaccination. Growth rate of the fish was observed monthly. Result of this experiment indicated that mortality in the challenge test due to A. hydrophila infection considerably decreased for treatment combination among vaccination; and 500 and 1000 mg AA/kg feed. These AA levels without vaccination could not reduce mortality.
Co-Authors Retno Widaningroem