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Daily Check List

Weekly Check List

Monthly Monitoring

Feed Requirements

Essential Nutrients

Additional Nutritional Factors

Feeding Regime

Water Quality Requirements

Water Quality Action and Reaction

Water Quality Management and Biofilter Maintenance

Post larval fitness parameters

Post Larva Acclimitation

YOU ARE IN HEALTH MANAGEMENT

Risk Management, Bio-security and HACCP Implementation

Harvesting

System Disinfection Procedures

Equipment Maintenance

Record Keeping and Report Templates

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Stress Test for Post Larva

Used to measure the fitness of a population of post larvae prior to sale or stocking in grow-out.

Equipment Required: 100 post larvas. Centigrade thermometer. Refractometer. Saltwater 32-34ppt. Freshwater 0-1ppt. 10-15 litre bucket.

Procedure:

Two Parameter Test (temperature and salinity). Fill the 10-15 litre bucket with water at 22C and 5ppt salinity. Measure and record temperature and salinity from the larval tank (normally at 27-28C and 32-34 ppt). Randomly collect 100 postlarvae from the tank and transfer into the test bucket. Hold for one hour and count the number of survivors (those that respond and swim normally when stimulated). Eighty percent or more active indicates the population has passed the test.

Single Parameter Test (salinity). Fill the 10-15 litre bucket with water at 27-28C and salinity at 0-1 ppt. Measure and record temperature and salinity from the larval tank (normally at 27-28C and 32-34 ppt). Randomly collect 100 postlarvae from the tank and transfer into the test bucket. Hold for one hour and count the number of survivors (those that respond and swim normally when stimulated). Eighty percent or more active indicates the population has passed the test.

If the postlarvae do not pass the stress test then conditions need to be improved prior to a retesting.

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HEALTH MANAGEMENT & DISEASE CONTROL INDEX

Variables to be used in health evaluation

Health evaluation tests
Wet Mount Procedure . PL visual examination . You are here . Gill examination . Mid-gut Examination . Stomach Contents Analysis

Shrimp Diseases
Viruses
Hepatopancreatic parvo-like virus (HPV) . Reo-like virus (REO) . Lymphoid organ vacuolization virus (LOVV) . Taura Syndrome Virus (TSV) . Rhabdovirus of Penaeid Shrimp (RPS) . White Spot Syndrome Virus (WSSV) . Infectious hypodermal and hematopoietic virus (IHHNV) . Baculovirus penaei (BP)
Bacterial Diseases
Vibriosis . Epicommensal fouling disease (filementous bacteria) . Necrotizing Hepatopancreatitis (NHP) . Black spot disease (BSD) . Mycobacteriosis
Fungal Diseases
Larval mycosis . Fusariosis
Protozoans
Haplosporidia . Gregarines . Cotton Disease
Other
Black Gill Disease (BGD) Dissolved Oxygen Crisis Nitrogen Gas Bubble Disease

Disease control
Decreasing density, partial or early harvests . Drugs, chemicals and treatments . Sanitation

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