Practical Manual on Better Management Practices for Tambak ...

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2. WHAT TO NEEDS TO BE DONE DURING DISEASE?• On a daily basis record the number of diseased and dead shrimp.• If the daily mortality remains low (less than 5 shrimp per day) or subsides, thenthere is no need to go for an emergency harvest. Continue monitoring thepond, for signs of rapidly increasing mortality.• Remove the diseased and dead shrimp and burry them far away from thetambak site.• Do not throw away the dead and diseased shrimp in water canal or on openplaces.• Do not apply any chemicals/medicines without advice from shrimp healthspecialists.Diseased shrimp:Shrimp with white spot diseaseNormal shrimp:Better Management Practices for Tambak Farming in Aceh | 47
• If there is rapid increase in mortality (more than 5 dead shrimp/day) on a daily basis(over 2-3 days) and with or without white spots on shrimp, combined with rapiddecrease in feed consumption, prepare for emergency harvest. As early as possible inthis process (i.e. after 1 or 2 days of increasing mortality), conduct Shrimple TM test, ifavailable, for WSSV infection. Even if the test result is negative, if mortalities rapidlyreach 50 per day and pond records do not indicate an obvious environmental cause,harvest the entire crop by cast net and retain water in pond for at least a one month. Ifshrimp are too small to harvest, retain them, with the water, in the pond for at leastone month.• If there is urgency to prepare for another crop, then apply 1000 Kg/ha bleachingpowder (calcium hypochlorite) to disinfect the tambak water. After 15 days release thewater in to the canal.• Drive away animals and birds from disease affected ponds.• Do not move farm workers or exchange farm utensils from diseased ponds to otherponds.Diseased shrimps near the sides of tambakCheck the disease using test kitBetter Management Practices for Tambak Farming in Aceh | 48
Page 1 and 2: Supported by:PRACTICAL MANUALBETTER
Page 3 and 4: CONTENTA. KEY ASPECTS FOR SUCCESSFU
Page 5: B. FARMER GROUP FORMATION1. Farmer
Page 8 and 9: E. BETTER MANAGEMENT PRACTICES FOR
Page 10 and 11: I. LOCATE THE TAMBAK ACCORDING TO N
Page 12 and 13: II. DESIGN AND CONSTRUCT SHRIMP FAR
Page 14 and 15: 2. REMOVE THE ORGANIC WASTE FROM PO
Page 16 and 17: Improper removal of black soilPrope
Page 18 and 19: 4. CHECK THE PH OF SOIL.IF ACIDIC S
Page 20 and 21: 5. FILL THE WATER USING WATER FILTE
Page 22 and 23: 7. DO NOT USE PESTICIDES• Do not
Page 24 and 25: • Do not apply lime and fertilize
Page 26 and 27: 2. SELECT ACTIVE AND STRONG SHRIMP
Page 28 and 29: • Shrimp seed should be clean and
Page 30 and 31: 5. PACK THE SEEDS IN GOOD CONDITION
Page 32 and 33: 6. ACCLIMATIZE AND RELEASE THE SEED
Page 34 and 35: 7. AVOID SEED FROM POORLY MANAGEDCO
Page 36 and 37: V. FEED MANAGEMENT PRACTICES1. PROP
Page 38 and 39: DAILY FEED REQUIREMENT PER 1000 SHR
Page 40 and 41: 2. REGULARLY CHECK THE WATER QUALIT
Page 42 and 43: 3. REMOVE BENTHIC ALGAEIf not remov
Page 44 and 45: 5. MAINTAIN ADEQUATE OXYGEN LEVEL I
Page 46 and 47: Healthy showing gutA healthy shrimp
Page 50 and 51: Do not throw the diseased shrimpsin
Page 52 and 53: • Use more water pumps if necessa
Page 54 and 55: X. IMPROVED MARKETING PRACTICES•

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