Acute Hepatopancreatic Necrosis Disease (AHPND), commonly known as early death syndrome, It has a significant challenge in shrimp farming, particularly during the seedling stage. Characterized by sudden onset and high mortality rates, AHPND needs early attention and effective preventive measures to mitigate its impact on shrimp populations. Here, we delve into the common causes of AHPND and propose proactive strategies for prevention to ensure a healthy and thriving aquaculture environment.

Common Causes of AHPND in Shrimp

Pathogen Carriage in Shrimp Fry:

1. Shrimp fry carrying a high load of pathogens can introduce disease into the pond, leading to widespread mortality among shrimp populations.

Water Quality and Algae Dynamics:

1. The death of algae and fluctuations in water quality can result in the accumulation of toxic substances, compromising the shrimp breeding environment and predisposing shrimp to pathogenic infections.

Overfeeding and Organ Strain:

1. Long-term overfeeding can strain the liver and pancreas of shrimp, weakening their physiological resilience and making them susceptible to bacterial invasion and diseases.

Sudden Temperature Changes:

1. Abrupt fluctuations in water temperature, especially sharp rises or drops, induce stress responses in shrimp, making them more susceptible to pathogenic infections such as Vibrio.

Preventive Measures for AHPND in Shrimp

Pathogen Control:

1. Conduct pathogen testing on shrimp seedlings prior to introduction into ponds. Implement water disinfection measures, such as reservoirs, to reduce the transmission of pathogenic microorganisms.

Water Quality Management:

1. Prior to the breeding period, ensure thorough pond cleaning and disinfection. Use live bacteria and detoxification products during breeding to improve pond bottom quality, promote beneficial algae growth, and stabilize water quality.

Enhance Shrimp Immunity:

1. Supplement shrimp feed with additives such as Runeon II bile acids and vitamin C (VC) to enhance hepatopancreas health and bolster shrimp immunity against infections.

Stress Reduction:

1. Mitigate stressors such as sudden weather changes by promptly administering vitamin C and ensuring adequate oxygen levels in ponds. Adjust water parameters, detoxify ponds, and provide nutrient-rich feeds during stressful events to alleviate shrimp stress and enhance immunity.

Feed Management:

1. Adopt a feeding strategy of "less is more," particularly during periods of temperature fluctuations or molting events. Adjust feeding schedules or temporarily halt feeding to reduce stress on shrimp populations.

In the event of an AHPND outbreak, immediate cessation of feeding is essential, along with stringent water quality control measures and stress reduction strategies. Gradually resume feeding once the disease stabilizes, and consider supplementing feed with hepatopancreas-protecting products to support shrimp recovery.

By implementing these proactive measures, shrimp farmers can effectively prevent and manage AHPND outbreaks, safeguarding shrimp health and ensuring sustainable aquaculture practices. Stay tuned for more insights on optimizing shrimp farming for success and longevity.