SHARING HOW TO IDENTIFY SHRIMP INFECTED WITH SLOW-GROWTH EHP DISEASE
Question: Is EHP disease contagious? Is there a way to identify shrimp infected with EHP?
How to identify shrimp infected with EHP slow-growth disease
*Enterocytozoon hepatopenaei* (EHP) is an intestinal pathogen affecting both whiteleg shrimp and black tiger shrimp in aquaculture. EHP was first reported in 2016 in farmed whiteleg shrimp in Venezuela. EHP damages the intestinal walls, causing slow growth. It also infects the hepatopancreas tubules in shrimp, damaging organs that absorb nutrients from food.
Salinity affects EHP infection rates
In practice, EHP is more common in commercial ponds with high salinity (>15 parts per thousand (ppt)) compared to those with low salinity (<5 ppt). Since whiteleg shrimp are euryhaline (capable of surviving in both low and high salinity), scientists have conducted experiments to see if EHP can infect shrimp under low salinity conditions.
The experiment results indicate that shrimp feces are one of the main sources of EHP transmission. EHP transmission can occur at salinities below 2 ppt; however, the infection rate, speed, and severity are higher in ponds with high salinity, typically between 25–30 ppt.
Identifying EHP in shrimp through observation
If you lack access to reliable lab services or facilities in your farming area, you can still visually assess the likelihood of EHP infection in your shrimp through careful observation and monitoring for the following signs:
- Thin epidermis under the shell, and the shell itself may also be thin.
- White muscle tissue due to ongoing stress caused by EHP.
- Black spots on the eyestalks, in the muscle tissue, and along the hindgut.
- Slower-than-normal growth rate.
- Reduced appetite, with no increase in food intake over time.
- Delayed molting and minimal growth following molting.
Source: VPAS
Contact AQUA MINA for consultation and supply of aquaculture round tanks and aquaculture equipment for high-tech shrimp farming.
- Address: 685 National Highway 1A, Binh Hung Hoa Ward, Binh Tan District, Ho Chi Minh City
- Phone: 1800 6071 (Toll-free hotline)
- Email: sales@aquamina.com.vn or oversea@aquamina.com.vn
Aqua Mina's distributor in Japan:
REX INDUSTRIES CO., LTD
- Address: 1-9-3 Hishiya-Higashi, Higashi-Osaka 578-0948 JAPAN
- Email: kimakubo@rexind.co.jp
- Phone: +81-(0)72-961-9893
- Website: http://www.rexind.co.jp/e/
Ngày đăng : 16/11/2024
2667 View
Other Articles
22 kW Turbo Blower with Pneumatic Suspension vs. Suplang Blower – Which Is the Better Choice for Shrimp Ponds? Contact: 1800.6071 (Toll-free)
TURBO BLOWER FOR AQUACULTURE AND TRADITIONAL SUPLANG BLOWER – OPERATIONAL PERFORMANCE COMPARISON Hotline: 1800.6071 (Toll-free)
AQUA MINA 7.5 kW SUSPENDED AERATION BLOWER FOR AQUACULTURE – DISTINCT PERFORMANCE COMPARED TO TRADITIONAL SUPLANG BLOWERS IN SHRIMP FARMS
TURBO BLOWER – ADVANCED AERATION TECHNOLOGY THAT SAVES ENERGY COMPARED TO SUPLANG BLOWERS IN SHRIMP FARMING
15 kW TURBO BLOWER FOR AQUACULTURE – WHAT MAKES IT DIFFERENT? A COMPARISON WITH TRADITIONAL BLOWERS
Tensions in the Strait of Hormuz: Vietnam’s USD 401 Million Seafood Exports Enter a Challenging Zone
The Middle East Erupts in Tension, Import–Export Department Issues a Series of Urgent Recommendations
Benefits of Exogenous Protease in Whiteleg Shrimp Farming
Comparison of Aquaculture Turbo Blower Specifications vs Traditional Roots Blower | HOTLINE: 1800.6071
Securing an FTA with the EU: Indian shrimp puts pressure on Vietnam's market share
Indonesia’s shrimp industry recovers in late 2025 but faces tightening control risks from the United States
.jpg)