SIGNS AND SYMPTOMS
The disease starts as yellowish dicolouration of the body, subsequently,
the appendages turn red and finally the whole shrimp becomes red. In the
cephalothorax region, excessive fluid with foul odour may be found
CAUSE
Definite causative agent of this disease is not known. Presence of aflatoxins
in feed, prolonged high pH and low salinity of water lead to red disease.
DIAGNOSIS
Based on gross signs and symptoms and confirmed by demonstration of massive
necrosis of hepatopancreas in histological sections.
PREVENTION
Use fresh and properly stored feeds. Reduce organic matter content in water
by increased water exchange. Do not use high doses of lime during ound
preparation since it increases pH of water during culture
CONTROL
Not known. Avoid using old and rancid feed. |
