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Sophia Lasma Sagala
Research Institute for Mariculture, Gondol, Bali
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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APPARENT DIGESTIBILITY OF SELECTED FEED INGREDIENTS IN DIETS FOR MUD CRAB (Scylla paramamosain) Ketut Suwirya; Nyoman Adiasmara Giri; Muhammad Marzuqi; Sophia Lasma Sagala
Indonesian Aquaculture Journal Vol 2, No 1 (2007): (June 2007)
Publisher : Center for Fisheries Research, Agency for Marine and Fisheries Research and Human Resource

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (38.697 KB) | DOI: 10.15578/iaj.2.1.2007.1-5

Abstract

Cultured mud crabs (Scylla spp.) are commonly fed with ‘trash’ fish. Insufficient supply, high cost and variable quality of ‘trash’ fish has lead to a need to develop costeffective and environmentally friendly formulated diets. This study was conducted to determine quality of selected feed ingredients as protein sources in mud crab diets based on their nutrient composition and digestibility coefficients for dry matter (ADMD), crude protein, lipid and energy. The digestibility coefficients for ADMD ranged from 82.46% to 89.20%. Animal-based feedstuffs such as shrimp head, tiny shrimp and squid liver meal had higher ADMD values than fish meal. Of the plant-based feedstuffs, soy bean meal had the highest ADMD values (89.20%) and corn gluten had the lowest (82.46%). Corn gluten had the lowest protein digestibility (78.81%) and soy bean meal had the highest (96.05%). The lowest energy digestibility (71.13%) was obtained in corn gluten meal. Soy bean meal had a higher energy digestibility value (98.48%) than fish meal (85.95%). All animal meal sources had similar energy digestibility values (85.86%—92.09%).
THE EFFECT OF VITAMIN C (L-ASCORBYL MONOPHOSPHATE-Mg) ON THE DEFORMITY PERFORMANCE OF HUMPBACK GROUPER (Cromileptes altivelis) LARVAE Sophia Lasma Sagala; Suko Ismi; I Nyoman Adiasmara Giri
Indonesian Aquaculture Journal Vol 5, No 1 (2010): (June 2010)
Publisher : Center for Fisheries Research, Agency for Marine and Fisheries Research and Human Resource

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (321.872 KB) | DOI: 10.15578/iaj.5.1.2010.29-36

Abstract

This study was aimed to get a standard protocol for vitamin C application in enrichment of Artemia nauplii and to examine the impact of vitamin C on humpback grouper larval deformity performance. Vitamin C in the form of L-ascorbyl-2-monophosphate-Mg (AMP-Mg) was used for the enrichment and incorporated into Artemia nauplii at a given level of 0-1.5 g/L with enrichment period of 4, 6, and 24 hours for each level. The effect of AMP on larval deformity was tested using the following treatments: unenriched both Artemia nauplii and commercial diet, un-enriched Artemia nauplii and experimental diet containing 2.5 g AMP-Mg/kg diet, enriched Artemia nauplii obtained from the protocol and commercial larval diet. Analysis of vitamin C content in Artemia nauplii was carried out using HPLC and larval deformities were observed using staining method, visual examination, or X-ray depending on larval age. The results showed that the best enrichment method of AMP in Artemia nauplii is achieved at the dose of 0.9 g/L for 6 h. The lowest percentage of abnormalities was found in larvae fed with enriched Artemia nauplii and commercial diets, suggesting that vitamin C has an important role in controlling larval deformities.
Co-Authors I Nyoman Adiasmara Giri Ketut Suwirya Muhammad Marzuqi Nyoman Adiasmara Giri Suko Ismi