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How to reduce the cost of shrimp farming?

When the price of shrimp decreases while the price of feed, materials, electricity and labor increases, farmers need to carefully calculate and apply measures to reduce farming costs to preserve capital

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Yellow head disease

Yellow head disease (YHD) appears on black tiger prawn, whiteleg shrimp and many other types of shrimp in Vietnam, Thailand, or India. In Vietnam, shrimp is often infected with yellow head disease due to changes in weather, seasons, and in coastal areas with high salinity.

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Shrimp farming techniques during cold season

Shrimp grows in a temperature range of 25 to 32 degrees Celsius. During cold season when the temperature is low, shrimp decreases their ability to catch prey, reduces digestibility and decreases resistance to diseases. Vietlinh suggests some techniques for farming during cold season.

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Foam in shrimp pond

White foam that does not dissolve in a short period of time might appear after paddlewheel aerators are run. If foam floats in the middle of the pond, that area accumulates and produces many toxic gases such as H2S and NH3. H2S and NH3 can poison shrimp; high concentrations of these gases can kill shrimp.

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Disease caused by DIV1 in shrimp

DIV1 (Decapod iridescent virus 1) can cause mass death in shrimp with high rate of infection. The disease results in quick lethality within just two to three days from the first infection. Currently, there is no effective way to prevent the spread of this disease.

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Technological process for industrial black tiger prawn farming

Technological process for industrial black tiger prawn farming includes important steps such as preparing settling ponds, innovating farming ponds, managing water color, stocking post-larvae, taking care of shrimp, and harvesting

Technology » Shrimp culture

Super-intensive whiteleg shrimp farming in 2 stages

Super-intensive whiteleg shrimp farming in 2 stages and little water change according to Truc Anh Technology: A shrimp-farming should have 1 settling pond for raw water, 1 settling pond for water treatment, 1 nursery pond, 2 farming ponds, 1 water supply canal, and 1 water drainage canal

Technology » Shrimp culture

Identify the main causes of slow growth in shrimp

In many cases, the sizes of black tiger prawn as well as whiteleg shrimp don’t grow at the end of the first farming month to the beginning of the second month. This issue makes shrimp farmers concerned and causes difficulties in farming. There are many reasons why shrimp don’t grow, or grow slowly such as breed quality, diseases, farming environment, and care

Technology » Shrimp culture

Preventing microsporidiosis and EHP in shrimp

Enterocytozoon hepatopenaei (EHP) is a parasite found in hepatopancreas cells of shrimp. The disease doesn’t cause mass deaths, but makes shrimp grow slowly and even stop growing despite a large consumption of feed. Shrimp with EHP can only reach an average size of 4-5 grams after 100 days of farming

Technology » Shrimp culture

Diseases caused by Vibrio bacteria

Vibrio diseases, also known as Vibriosis, can cause broken antennae, black gill, rotten tail, or black spots in shrimp. The main agents causing Vibrio diseases are bacteria in the genus Vibrio. Different Vibrio bacteria cause different types of diseases in shrimp. Vibrio bacteria enter farming ponds through water, breed, and feed from pond bottoms

Technology » Shrimp culture

Some tips for shrimp farming with biofloc and semi-biofloc technology

To successfully apply biofloc technology, according to Viet Linh, farmers need to comply to many requirements such as stocking shrimp in high density, maintaining a proper aeration and stirring system, adjusting the C:N (carbon-to-nitrogen) ratio correctly, managing a strict pond control system

Technology » Shrimp culture

White feces syndrome

On the market today, there are several types of medicines for preventions and treatments of white feces syndrome. They are mostly antibiotics. Thus, they should be used according to doses instructed in package. Avoid using medicine rushingly; avoid increasing doses or using insufficient doses

Technology » Shrimp culture

Crab - Shrimp polyculture

The application of eco-friendly and environmentally friendly farming such as crab-shrimp polyculture has becomes more popular. These farming methods are suitable with low investment capital and low technical skills. With crab-shrimp polyculture, harvested products are of large sizes, assured quality, and sold at high prices in the market

Technology » Shrimp culture

Common mistakes in shrimp farming

Some common mistakes in shrimp farming are not choosing high-quality postlarvae, growing shrimp in high density, improper farming techniques, inattention to diet for shrimp, and the overuse of lime. For example, overusing lime can cause an increase in Ca2+ and eliminate beneficial microorganisms in ponds. This makes shrimp underdeveloped

Technology » Shrimp culture

Shrimp farming during tropical depressions

Tropical depressions occur when low pressures are accompanied by cold air. Sometimes, air temperatures are low, leading to lower water temperature in shrimp ponds. During tropical depressions, shrimp is susceptible to diseases, especially EMS (Early Mortality Syndrome) and white spot syndrome. Such conditions cause great damages to farmers

Technology » Shrimp culture

Flathead grey mullet – Shrimp polyculture

Farmers can farm flathead grey mullet fish (Mugil cephalus Linnaeus) with black tiger prawn or whiteleg shrimp. Flathead grey mullet has good vitality. The fish can grow and develop rapidly. Flathead grey mullet has many advantages for polyculture because it can live in environments with different ranges of salinity and heat

Technology » Shrimp culture

Preparing and using EM2 to manage pond water

The use of Effective Microorganisms (EM) in shrimp farming is a measure to manage a stable water environment, increase the growth ability of shrimp, and limit the occurrence of some common diseases. EM also makes shrimp molt uniformly and helps treat luminous bacteria disease. EM2 solution especially can help manage water color in shrimp pond

Technology » Shrimp culture

Using Effective Microorganisms (EM) and garlic to prevent diseases in shrimp

EM is a liquid mixture of beneficial microorganisms, probiotics, bacteria, yeasts, and fungi. It activates native microorganisms in water and soil as well as helps maintain a balanced farming environment. EM is environmentally friendly. It is safe for people and animals

Technology » Aquaculture

Water in aquaculture

TAN; H2S (hydrogen sulfide); Turbidity of water; Alkalinity; Dissolved oxygen; Salinity; pH; Temperature

In aquaculture, changes in the pH values can affect the physical elements, chemistry, and biology of water environment as well as the health of shrimp or fish.

- The appropriate pH values for black tiger prawn farming are pH = 7.2 to 8.8. The best conditions are from 7.8 to 8.5.

- The fluctuation of pH during a day should not exceed 0.5. If the pH values change significantly, they can make shrimp and fish shocked, weakened, or stop eating.

- If the high or low levels of pH extend for a long period time, they will make shrimp grow slowly, stunting and susceptible to diseases.

Technology » Shrimp culture

Biosipec

Innovative and Intensive Shrimp Farming