1. Y. Heru Nugroho*, Ibnu Sahidhir, Syafrizal, Muslim, Abidin Nur
Intensive culture of brackishwater tilapia with powdered activated carbon and starch
Brackishwater Aquaculture Development Center of Ujung Batee
Province of Aceh, Indonesia

2. 1. Introduction

3. Benefits of powdered activated charcoal
Absorbs toxins from fungi (e.g. Aflatoxin)
Absorbs toxins from bacteria (e.g. Botulinum toxin)
Prevents reabsorption of bile waste
Increases feed efficiency
Lowers ammonia
Reduces dissolved organic matter (DOM) in the water.
Activation of carbon with the ratio KOH / sample (a) 1: 2 (b) 2: 1

4. Absorbs cyanotoxin and soil odors
Filamentous algae
The cause of the soil odors
Methyl isoborneol
Geosmin

5. Purpose
Seeing the effect of the addition of powdered activated charcoal in feed SR
Growth Feed conversion ratio
Water quality

6. 2. Method

7. Proportion of total feed
Materials
Proportion of total feed
Artificial feed
97%
Starch
1.5%
Charcoal powder

8. Proportion of total feed
Water
Materials
Proportion of total feed
Starch
0.5%
Charcoal powder

9. Trial Pond Area of pond was 150 m2 Stocking density was 30 ind/m2
Initial weight was + 4 gr
Feeding rate was 4% in the 1st month and 3% in the last two month
Fed 3 times a day
Weighed fish every week
Provided paddle wheel aeration in the 3rd month
Checked water quality and phytoplankton

10. Weigh the fish
Stock the fish

11. 3. Results and Discussion

12. Tilapia Growth

14. Filamentous algae
PAC

15. Compact sediments

16. Change domination of filamentous algae to diatom in the 3rd month

17. Microvilli without activated charcoal
Activated charcoal is a cleaner ? Prevent biofilm formation on the surface of the intestine
Nutrients are more absorbed by the epithelial
Activated charcoal powder absorbs metabolites and give intestinal microbes a shelter
Microvilli more developed

18. Tilapia fed charcoal had more natural feed in the gut
Rotifer
Phytoplankton

19. Output Production and Financial Performance
Production performance of tilapia with powdered activated carbon
Financial performance of tilapia culture with powdered activated carbon (IDR) for 150 m2 pond
Variables
Values
Duration (days)
100
Income
10,400,000
Harvesting biomass (kg)
485
Variable cost
Productivity (kg/ha)
30,313
Seed
1,250,000
Initial weight (g) 4
Feed
5,130,000
Final weight (g)
105
electricity
600,000
Stocking density (ind/m2) 30
Charcoal
100,000 SR
92%
Fixed cost
400,000
FCR
1.01
7,480,000
Average daily growth (g/day)
1.1
Benefit
2,920,000

20. Charcoal benefit
Tilapia fish showed no signs of disease, and the tilapia survived until the end of the test.
Benefit to farmers increased because of savings greater than the cost of feed supplements used.
Charcoal cost
FCR decrease 0,2
IDR 400
efficient IDR 1.800
(Feed cost IDR 9.000)
Margin
IDR 1400/kg feed

21. Further research required
Interaction between charcoal and other ingredients

22. Thank You