Symptoms of Shrimp farm
- White feces disease (WFD) is one of the most serious problems in shrimp culture.
- WFD on L. vannamei shrimp farming is currently causing lower productivity.
- WFD becomes apparent when the digestive system of shrimp malfunctions and feces turns from normal (brownish color) to pale white color.
- White feces appear to be more buoyant than normal feces and float on the water surface.
- Shrimp hepatopancreas becomes whitish and soft.
- Farmers have observed that as soon as they see white feces, shrimp eat less.
- Early disease indications appear in both feed trays and at water surface, where abundant floating fecal strings white to some-what yellow feces are observed and sometimes could also be found on feeding trays.
- Diseased shrimp tend to be darker in color and after some time their bodies will lose firmness and become soft and limp, and eventually will die.
- White feces disease often occurs one - two months after stocking and is manifested as reduced feed intake and feed absorption in the shrimp’s gut.
- WFD has caused significant economic losses to shrimp farmers, because of high FCR, slow growth, and variable sizes of shrimp at harvest
- Accumulation of sludge
- Dirty pond bottom and feeding area
- Over feeding
- Avoid overfeeding
- Pond bottom management
- Control vibrio load
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