Health
Management and Disease Control
For vannamei in RAS
Remember: Good management
practices reduce stress factors.
Variables to be used in
health evaluation:
Survival Rate Mortality Rates Growth Rates
Size Variation Feed Conversion
Ratio Shrimp
Appearance
Health evaluation tests and
procedures:
Wet Mount
Procedure Post Larvae visual examination and
fitness Stress test for post larva
Gill examination Mid-gut Intestine Fullness
Examination Stomach Contents Analysis
Disease control:
Decreasing
density, partial or early harvests Drugs, chemicals and treatments Sanitation
Shrimp Disease, Pathogens and
Syndromes in Grow-out
Viruses
Baculovirus
penaei (BP) Infectious
hypodermal and hematopoietic virus (IHHNV) White Spot Syndrome Virus (WSSV)
Hepatopancreatic
parvo-like virus (HPV) Reo-like virus (REO) Lymphoid organ vacuolization virus
(LOVV)
Taura Syndrome
Virus (TSV) Rhabdovirus of
Penaeid Shrimp (RPS)
Bacterial Diseases
Vibriosis nr Necrotizing Hepatopancreatitis (NHP) nr Epicommensal fouling disease
(filementous bacteria) nr
Black spot
disease (BSD) nr Mycobacteriosis nr
Fungal Diseases
Larval mycosis Note: only affects larva Fusariosis
Protozoans
Haplosporidia Gregarines Cotton Disease
Other
Black Gill
Disease (BGD) nr Dissolved
Oxygen Crisis Nitrogen Gas
Bubble Disease
Further References
1. J.A. Brock and K.L. Main. A
Guide to the common Problems and Diseases of Cultured
Penaeus vannamei.
2. Further links here
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