IMPROVING SLOW MOLTING IN SHRIMP
Molting is a vital growth process for shrimp. However, slow or delayed molting has become a major concern for farmers.
This condition not only slows down shrimp growth but also significantly reduces survival rates.
1. Root Causes of Slow and Weak Molting in Shrimp
Understanding the causes is the first step toward effective solutions. Farmers should pay attention to the following key factors:
Mineral Deficiency (Micro and Macro Elements)
This is the most common cause. Intensive shrimp ponds are often deficient in essential minerals such as:
Calcium (Ca)
Magnesium (Mg)
Potassium (K)
Without sufficient nutrients, shrimp cannot form a new chitin shell.
Unstable Pond Environment
Low alkalinity (below 100 mg/L) causes stress and reduces metabolic activity.
Unstable pH also drains shrimp energy, leading to delayed or incomplete molting.
Weak Gut and Hepatopancreas Health
Shrimp infected with Vibrio bacteria or parasites absorb nutrients poorly.
Weak body condition prevents shrimp from molting properly on schedule.
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2. Environmental Management for Effective Molting Recovery
A stable environment is essential to resolve slow molting issues. Water parameters should be monitored daily.
Maintain Stable Alkalinity and Dissolved Oxygen
Alkalinity: 120–150 mg/L (improves mineral absorption)
Dissolved oxygen: Always above 5 mg/L, especially at night
Control Algae and Water Clarity
Excessive algae growth causes pH fluctuations and nighttime oxygen depletion.
Regular biological treatment is needed to control algae and maintain clean water, helping shrimp molt more evenly and healthily.
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3. Nutrition Support for Faster Shrimp Molting
Nutrition plays a decisive role in helping shrimp recover molting cycles.
Proper Use of Mineral Supplements
Apply minerals at night when shrimp prepare to molt
Mineral powders help harden the shell quickly within a few hours
Mix liquid minerals into feed for direct absorption
Vitamins and Digestive Enzymes
Vitamin C reduces stress and boosts immunity
Digestive enzymes improve nutrient absorption and mineral utilization
Helps compensate for mineral deficiencies in shrimp bodies
4. Handling Shell Sticking and Soft-Shell Shrimp
After molting stimulation, shell hardening speed must be closely monitored to avoid disease attacks.
Fixing Shell Sticking and Soft Shell Issues
Check pond salinity regularly
If salinity is too low, supplement high levels of calcium and phosphorus to speed up shell hardening
Daily Shrimp Health Monitoring
Observe feeding trays to evaluate molting rates
Early prevention is the most sustainable way to ensure high productivity
Recommended Products (Vietvetpharma)
Combining GLUCAN-C and TPD MAX creates a dual protective barrier: enhancing natural immunity while supplying essential nutrients to help shrimp resist environmental stress and disease.
GLUCAN-C: Immune Boost & Fast Growth
Main ingredients: Beta-glucan, Vitamin C, Citric acid
Benefits:
Stimulates molting and helps shrimp harden shells quickly
Strengthens immunity during sudden environmental changes
Reduces stress from transport or environmental fluctuations
TPD MAX: Bacteria Control & Body Recovery
Main ingredients: Organic calcium (Calcium gluconate), Butyric acid
Benefits:
Helps control and prevent bacterial infections affecting liver and gut health
Treats body deformities such as curved shrimp and opaque muscle caused by mineral deficiency
Improves survival rate and promotes uniform growth
Farmers can learn more details and explore related products here. See more: ...
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