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Indra Suryawinata
Universitas Brawijaya
Agriculture, Biological Sciences & Forestry Humanities Education Environmental Science Languange, Linguistic, Communication & Media Other

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PROSES PENANGANAN TELUR KERAPU TIKUS (Cromileptes Altivelis) DI BBRBLPP GONDOL Muh. Sulaiman Dadiono; Indra Suryawinata
Jurnal Biogenerasi Vol. 7 No. 1 (2022): Volume 7 Nomor 1 tahun 2022
Publisher : Universitas Cokroaminoto Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30605/biogenerasi.v7i1.1626

Abstract

The purpose of this study was to determine the process of handling humpback grouper eggs (Cromileptes altivelis) at BBRBLPP Gondol Bali. The data collection method was carried out by means of observation, active participation and direct interviews. The process of handling humpback grouper eggs includes the process of handling initial eggs, egg selection, egg counting and egg observation. The initial handling of humpback grouper eggs begins with harvesting eggs which are carried out in the morning in an egg storage tank that has an egg collector installed. Egg selection is done to separate eggs of good quality and not good. Good quality eggs will float on the surface, are round, transparent and have a core. Quality eggs will not sink to the bottom and are milky white. The egg-calculation technique uses the manual method with the help of a petri dish and a 20 ml glass beaker. The results of the calculation of eggs obtained in one spawning of humpback grouper produced around 670,000 eggs for one broodstock pond of humpback grouper. Eggs using a 40x magnification microscope. The fertilized egg has a transverse line between the nucleus of the egg which is a developing embryo. The unfertilized egg does not have a transverse line which indicates the egg does not have an embryo.
PENGELOLAAN PAKAN DAN PENGENDALIAN PENYAKIT LARVA KERAPU TIKUS (Cromileptes altivelis) Muh. Sulaiman Dadiono; Indra Suryawinata; Rima Oktavia Kusuma
Jurnal Biogenerasi Vol. 7 No. 1 (2022): Volume 7 Nomor 1 tahun 2022
Publisher : Universitas Cokroaminoto Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30605/biogenerasi.v7i1.1672

Abstract

Larval health is an important problem faced by the hatchery of humback grouper (Cromileptes altivelis). One of the factors that influence larval mortality is feed management and disease control in humback grouper larvae. Methods of data collection is done by means of direct interviews, active participation and observation. Feeding the larvae was started when the larvae were 2 days old with the first feed being Nannochloropsis occulata. Then Rotifera was given when the larvae were 2-4 days old with a density of 5 individuals/ml. Feed in the form of Artemia is given when the larvae are 20 days - 40 days old. Level 1 pellet feed was given when the larvae were 8-10 days old. The disease that often attacks humback grouper larvae is VNN (Viral Nervous Necrosis) with the characteristics of infected larvae are weak movement, larvae float on the surface, decreased appetite and larvae lying on the bottom of the pond. The bacterium that attacks the larvae is Vibrio alginolyticus. Treatment of Vibrio alginolyticus can use antibiotics but has bad side effects. While alternative medicine can use drugs from natural ingredients.
Health Management of Humpback Grouper Larvae (Cromileptes altivelis) in BBRBLPP Gondol Muh Sulaiman Dadiono; Indra Suryawinata
Journal of Aquaculture Development and Environment Vol 4, No 2 (2021): Journal Of Aquaculture Development And Environment
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/jade.v4i2.5252

Abstract

Larvae health management is a key factor in the hatchery of humpback grouper (Cromileptes altivelis) to prevent mass larval deaths and cause financial losses. Management of humpback grouper larvae health includes larval rearing, larval feed management and larval disease control. The primary data collection method was carried out in 3 ways, namely observation, active participation and interviews. Secondary data retrieval by studying literature from various related sources. The humpback grouper larvae were reared in the hatchery to control the temperature and condition of the larvae. Larval ponds are sterilized with 3-5 ppm chlorine in the morning and rinsed thoroughly so that no chlorine remains. Larvae were reared from the age of 1 day to 45 days. Feeding the larvae was started when the larvae were 2 days old with Nannochloropsis occulata. Rotifers were given when the larvae were 2-3 days old with a density of 5 individuals/ml. Artemia was given when the larvae were 20 days old until the age of 40 days. Pellets are given when the larvae are 8-10 days old with a pellet size of level 1. The pellet size continues to increase according to the larva's mouth opening. The disease that often attacks larvae is Viral Nervous Necrosis (VNN). The characteristics of larvae infected with VNN are reduced appetite, weak movement, larvae float on the surface and lie on the bottom of the pond. VNN attacks can only be overcome by prevention. The bacteria that often attack the larvae are Vibrio alginolyticus. Vibrio alginolyticus can be treated with antibiotics or non-antibiotics. The use of antibiotics is not recommended because they have negative side effects, so you can use other alternative medicines derived from herbal plants (phytopharmaceuticals).
Co-Authors Muh. Sulaiman Dadiono Rima Oktavia Kusuma