2023 - Page 7 of 8 - DELOS Aqua

17Mar

Causes and Ways to Overcome Stress in Vannamei Shrimp

Stress in vannamei shrimp is a common problem in aquaculture that can harm growth, health, and shrimp production. What’s more, this shrimp is susceptible to stress due to its sensitivity to environmental changes.

Vannamei shrimp is one of the most widely cultivated species worldwide due to its fast growth rate, high survival rate, and disease resistance.

However, farmers often face the challenge of stress on their shrimp, which can lead to reduced growth rates, decreased survival, and increased susceptibility to disease.

Therefore, we will discuss more deeply how to stress vannamei shrimp. Including the signs and how to overcome them.

Also Read: The Importance of Sea Level Altitude for Aquaculture

Causes of Shrimp Stress

1. Water quality

Poor water quality, including low oxygen levels, high ammonia and nitrite levels, to pH fluctuations, can cause stress for vannamei shrimp during cultivation.

2. Handling and Transportation

Handling and moving shrimp that are rough and not according to standards can also cause stress to the shrimp. This is because shrimp are sensitive to external stimuli, such as shock, exposure to too high a temperature, and overcrowding.

3. Environmental factor

Shrimp are sensitive to sudden environmental changes. Examples include rapid changes in light, temperature, and salinity. This sudden change can be a stress-causing factor for vannamei shrimp.

4. Inappropriate Feed and Nutrition

Poor or inadequate feed quality can cause stress to shrimp. This is because feed with poor quality can cause shrimp to experience an imbalance in the nutrients, vitamins, and minerals they get.

Signs of Stressed Shrimp

Farmers must continue to monitor shrimp during cultivation for signs of stress to prevent a more significant impact of losses. Here are some common symptoms of stress on vannamei shrimp:

Appetite and eating activity is reduced
Reduced activity and behavior become sluggish
Shrimp mortality rate increases
Abnormal swimming behavior, such as swimming in circles and darting.
Poor growth rate
Color change in the shrimp body

Also Read: The Threats of Nitrite in Shrimp Ponds and How to Overcome It

Impact of Stress on Shrimp

Stress in shrimp has a significant impact on shrimp health and growth. That is why farmers must constantly monitor the condition of the shrimp so they don’t experience stress during cultivation.

1. Lowering Shrimp Immunity

Stress can have a direct impact on the shrimp’s immunity. To be precise, it can significantly lower the immune level. This makes the shrimp more susceptible to disease and infection.

2. Reduced Growth

Stress can indirectly inhibit the growth of vannamei shrimp during cultivation. Stressed shrimp tend to have a disturbed diet, so not as many nutrients are absorbed.

3. Increasing Mortality Rate

Severe or prolonged stress can increase mortality among pond shrimp populations.

4. Behavior Change

Changes in behavior also have a direct impact when the vannamei shrimp are stressed. These changes include decreased activity levels and changes in diet.

How to Overcome Stress Shrimp

Preventing and managing stress in vannamei shrimp requires careful monitoring and management of environmental and physiological factors. Here are some ways to deal with stress on vannamei shrimp:

1. Monitor Water Quality Regularly

Monitoring water quality parameters regularly can be a way of preventing stress on vannamei shrimp. This is because optimal water parameters are the best environment for growing shrimp.

Therefore, regularly check water quality parameters such as temperature, pH, salinity, and dissolved oxygen levels, and make adjustments in case of fluctuations to maintain optimal conditions.

2. Give Enough Nutrition Shrimp

Adequate nutrition can make shrimp grow optimally and avoid stress. Ensure to provide balanced nutrition in feed and probiotics to support shrimp growth.

3. Adjust Stocking Density with Pond Capacity and Cultivation Type

Vannamei shrimp stocking densities that are excessive and not under pond capacity can cause stress to the shrimp. Because shrimp will compete with each other to get food and space for movement.

4. Shrimp Acclimatization

The last way to prevent stress on vannamei shrimp is to acclimate the shrimp gradually to changes in water quality parameters.

Also Read: Types of Shrimp that are Often Cultivated in Ponds

Consult the Condition of Your Shrimp on DELOS!

Stress on vannamei shrimp can trigger various diseases that are detrimental to cultivation. Therefore, farmers must know the causes and how to handle them. Considering that vannamei shrimp is a type of shrimp prone to stress.

When shrimp are stressed, as a farmer, you may need clarification about what steps to take to overcome them. However, now you don’t need to worry because you can consult DELOS directly about the condition of your shrimp.

With the best-dedicated science team, DELOS can help you monitor the condition of your shrimp and take the best action if specific problems arise.

Immediately contact the DELOS Team via contact@delosaqua.com or submit your pond problems in the contact column on our website at www.delosaqua.com. Immediately consult the condition of your shrimp on DELOS before it’s too late!

16Mar

Aquaculture

Partial Harvest of Vannamei Shrimp and Its Benefits to Increase Profits

Partial harvest of vannamei shrimp is something that farmers often do to maximize profits during cultivation, especially for those who implement semi-intensive, intensive super-intensive cultivation systems.

Vannamei shrimp is a species that is popular and most sought after by the global market. This shrimp has a fast growth rate and is suitable for aquaculture, so farmers widely choose it.

In order to maximize profits and ensure sustainable cultivation, farmers need to be aware of the benefits of partial harvesting. Let’s read more of these benefits in this article.

Also Read: These are 7 Tips for Successful and Profitable Vannamei Shrimp Harvest

What Is Partial Harvest?

Partial harvest is a technique for harvesting only a portion of the shrimp in the pond, allowing the rest to grow and develop. This harvesting technique can be done several times in one cultivation cycle, allowing farmers to manage their harvests and maximize profits.

Partial harvesting is a common technique used in vannamei shrimp farming to help regulate population densities and ensure consistent growth rates. By doing partial harvests, farmers can prevent overcrowding which can lead to stunted shrimp growth, disease outbreaks, and reduced survival rates.

Shrimp Partial Harvest Preparation

Before carrying out a partial harvest in vannamei shrimp farming, you must carefully prepare and plan for a successful harvest. Here are some preparatory steps you can take:

1. Determine the Optimal Harvest Size

Farmers must determine the ideal size for harvesting shrimp based on demand and market prices. This will help ensure the harvested shrimp can be sold at the most profitable prices.

2. Check the Water Quality

Farmers should check water quality parameters such as temperature, salinity, dissolved oxygen, etc., to ensure they are within the appropriate range for shrimp. If water quality parameters are less than optimal, farmers must first adjust them.

3. Prepare Harvest Equipment

The following partial harvest preparation that must be done is to prepare the equipment for harvesting. Farmers must ensure that all necessary equipment, such as nets, pumps, and baskets to accommodate harvested shrimp, is available. In addition, it must also be assured that all equipment is clean and working correctly.

4. Transportation Preparation

Farmers also have to prepare transportation for harvested shrimp. This ensures the shrimp are transported quickly and efficiently to the processing site.

Also Read: How to Cultivate Vannamei Shrimp from Preparation to Harvest

Partial Harvest Process

Partial harvesting usually uses nets to take 30% of the total shrimp population in the pond. After that, the shrimp are typically put in a container that has been prepared on the side of the pond.

The harvesting process involves placing nets at the bottom of the ponds, spreading the feed, and waiting a few moments for the shrimp to approach the nets to harvest them. This method is quite effective to do.

Harvesting usually starts at night, when the shrimp swim more freely. Feeding should be stopped a few hours before harvest. The process includes the following steps: turning off the aerator near the trap, lowering the net to the bottom of the pond, spreading a few handfuls of feed over the net area, and then waiting about 3-10 minutes.

Pull the net using the rope tied at the corners when a lot of shrimp are trapped. However, it is necessary to ensure that the number of shrimp caught is at most 30% of the total population in the pond.

Benefits of Partial Harvesting Vannamei Shrimp

Partial harvesting is a technique that harvests only a portion of the shrimp in the pond, leaving the rest to grow to a specific size. This harvest can be done several times during the production cycle, allowing farmers to maximize profits.

One of the main benefits of partial harvesting is that it allows farmers to take advantage of fluctuations in the price of vannamei shrimp on the market. By harvesting only a portion, farmers can manage sales to coincide with periods when shrimp prices are rising.

Partial harvests can also help farmers reduce production costs. Farmers can avoid the costs associated with harvesting and processing large quantities of shrimp all at once by only harvesting a portion at a time. This includes labor, equipment and transportation costs.

Apart from the economic side, partial harvest is also beneficial from the health side of the shrimp. By allowing some of the shrimp in the pond to continue to grow, farmers can help maintain a healthy ecosystem. This can help farmers reduce the risk of disease outbreaks and other problems during farming.

Also Read: 4 Types of Vannamei Shrimp Harvest Time

Harvest Your Shrimp with DELOS!

Partial harvesting of vannamei shrimp can help reduce shrimp density in ponds. This technique can be profitable for farmers to maximize profits when cultivating.

For those who need assistance with the partial harvest process, DELOS is the right choice for you.

DELOS is the best science, technology and operational management-based aquatech company to help you manage your shrimp pond. Including one of them is the harvesting process. Our harvesting process is carried out by experts in a transparent manner and at the best price.

Also, DELOS has an integrated supply chain, AquaLink, to connect you with producers and farm owners to obtain and sell pond products at competitive prices.

Contact the DELOS Team via contact@delosaqua.com or submit via the contact column on our website, www.delosaqua.com, to join our ecosystem and explore new opportunities in the aquaculture sector.

11Mar

News

DELOS Maritime Institute Successfully Holds a Webinar on Shrimp Diseases with Famous Speakers

Jakarta, March 11, 2023, DELOS Maritime Institute successfully held an OPINI DMI Webinar with the theme “Berdamai dengan Penyakit Udang: Tantangan Budidaya di Era Gempuran Penyakit Udang” and presented two well-known speakers, namely Dr. Ir. Heny Budi Utari M. Kes. and Wayan Agus Edhy.

The OPINI DMI Webinar event is held online via the zoom platform and DELOS YouTube lives broadcast. Approximately 250 participants, including Fisheries Extension Officers, Civil Servants, students, civil servants, and the general public, attended to learn about shrimp diseases that always haunt every aquaculture.

Vaname shrimp farming has become an important part of the global seafood industry, with a total production of more than 40 billion dollars annually. However, on the other hand, disease attacks are always lurking and continue to threaten the sustainability of this industry. The OPINI DMI webinar will increase knowledge and awareness of shrimp diseases.

Dr. Heny, a shrimp disease expert, discussed “Berdamai dengan Penyakit Udang: Tantangan Budidaya di Era Gempuran Penyakit Udang”. Her presentation highlighted how the disease is a limiting factor for successful aquaculture, how shrimp disease develops yearly, and the lessons that can be learned from disease attacks for future aquaculture.

Not only that, Dr. Heny also shared tips on disease prevention and control, such as implementing biosecurity, proper location and layout of ponds, making WWTPs in ponds, cleaning reservoirs, and implementing strict health protocols.

The discussion was continued by Wayan Agus Edhy, Tambak Co-Lead of DELOS, who discussed “Water Quality Management and Disease Mitigation”. With his experience, Pak Wayan emphasizes the importance of proper water management in shrimp disease prevention and control.

Based on Pak Wayan’s presentation, monitoring water quality, such as pH, temperature, dissolved oxygen, to Total Organic Matter (TOM) must always be ensured for its optimal value so that shrimp farming can run well and shrimp usually grow.

The discussion continued with a very interactive question session from the zoom meeting and the comments column for the DELOS YouTube live broadcast. The participants were enthusiastic about asking questions and engaging in discussions with two expert sources.

This discussion session provided an excellent opportunity for participants to learn from experts with years of experience in the shrimp farming industry.

As one of Indonesia’s well-known aquaculture education and training institutions, DELOS Maritime Institute is committed to continuing to provide the best educational facilities for fans of the world of aquaculture, one of which is through this OPINI DMI Webinar.

DELOS Maritime Institute plans to continue the OPINI DMI Webinars series every month regularly. This event will continue to bring together experts to discuss the latest trends and innovations in shrimp farming and provide participants with valuable insights and practical solutions.

The DELOS Maritime Institute will continue its education and training program, namely DELOS Maritime Institute Batch 3. It is planned that registration for the DMI Batch 3 program will open on April 17 – June 1 2023.

For this reason, so you don’t miss any information about the OPINI DMI Webinar and the DELOS Maritime Institute Batch 3, make sure you follow our social media on Instagram @delos.institute and @delos.aqua.

For those who didn’t have time to participate in the OPINI DMI Webinar live, you can watch the replay via YouTube DELOS or click here.

09Mar

Disease

Getting to Know the Taura Syndrome Virus (TSV) in Vannamei Shrimp

Taura Syndrome Virus (TSV) is a highly contagious disease affecting shrimp aquaculture worldwide. This disease can cause death up to 40-90% in post-larvae and juvenile stages.

The Taura Syndrome virus was first identified in 1992 during an outbreak that caused economic losses in Ecuador. Since then, TSV disease has become a significant concern in the aquaculture industry.

So, what are the signs that shrimp are infected with Taura Syndrome Virus (TSV), and how is it treated? Come on, find out more in this article.

Also Read: 7 Types of Shrimp Diseases that Often Occur During Cultivation

What is TSV?

Taura Syndrome Virus (TSV) is a disease of vannamei shrimp caused by an infectious virus that affects shrimp farming in various parts of the world. The disease caused by this virus first appeared in Ecuador in 1992. However, it later spread to Asian regions by importing infected fry and broodstock.

TSV is classified as a small icosahedral virus that belongs to the virus family called Dicistroviridae. This virus has a single-stranded RNA genome of about ten kilobases.

The Taura Syndrome virus infects the hepatopancreas, the digestive gland of the shrimp, and causes severe necrosis, which results in the death of organ function. This virus can also cause gill discoloration, lethargy, and mass death.

Transmission of Taura Syndrome Virus

Taura Syndrome Virus (TSV) is transmitted through water, infected shrimp and contaminated equipment. This virus can also be transmitted vertically from infected broodstock to the resulting fry.

In addition, shrimp that have been infected with TSV can still be carriers of the virus for the rest of their lives. Migratory birds, aquatic insects, and humans can also be a route for transmission of this virus.

The Taura Syndrome Virus can also infect through the excrement of seagulls that previously ate shrimp infected with this virus.

Symptoms of TSV in Vannamei Shrimp

Vannamei shrimp that are attacked by TSV usually show more than one symptom. Here are some common symptoms:

Shrimp become lethargic
Decreased appetite
The prawns gathered at the edge of the pond when they were almost dead
High and sudden death rates in post larvae and juvenile shrimp.
The shrimp’s stomach is empty, and the shrimp’s body is pale red
Fan tail and shrimp pleopods are red
Shrimp shells softened
There are dark spots that are randomly distributed on the cuticle of the shrimp.

Also Read: Recognize 7 Characteristics of AHPND Disease in Vannamei Shrimp Before It’s Too Late

How to Detect TSV Disease

Detection of Taura Syndrome Virus (TSV) disease can be done by PCR (Polymerase Chain Reaction) method, gross pathology, in situ hybridize, and bioassay. However, detection by PCR (Polymerase Chain Reaction) is the most accurate method that can be done.

Examination by the PCR method consisted of three stages, namely extraction of DNA/RNA samples for preparation of prints, DNA/RNA amplification with the help of a PCR machine (thermocycler) and analysis of the amplification results by electrophoresis, DNA/RNA staining and documentation with a Polaroid camera.

Control and Treatment

Until now, no vaccine is available to prevent transmitting this TSV disease. The precautions that farmers can take at this time is to control its spread.

One of the most effective preventive measures is to ensure the use of broodstock and frying free of the Taura Syndrome Virus (TSV). In addition, regular testing of shrimp populations and strict biosecurity measures can also help reduce the risk of infection.

Also Read: Get to Know the Covert Mortality Nodavirus (CMNV) which Can Attack Vannamei Shrimp

Overcome TSV Disease in Vannamei Shrimp with DELOS!

Taura Syndrome Virus (TSV) disease significantly threatens the vannamei shrimp farming industry worldwide. Understanding the symptoms and how to detect this disease is very important for farmers to prevent high losses.

For those worried that your vannamei shrimp farming will be attacked by TSV, you can take early prevention by making proper pond preparation and management with DELOS.

DELOS has Farm Management that can assist you in managing shrimp ponds according to international standards.

Together with a reliable and experienced scientific and operational team for many years, DELOS is ready to assist you in managing your shrimp ponds, including mitigating if the disease is detected in your shrimp ponds.

To become part of DELOS, contact contact@delosaqua.com or ask questions via the contact box on our website at www.delosaqua.com. Trust your shrimp pond management to DELOS!

———-

Source:

Surfianti, dkk. 2010. Deteksi Penyakit TSV (Taura Syndrome Virus) secara PCR pada Udang Vannamei (Litopenaeus vannamei) dengan Berbagai Ekstrasi, Suhu dan Waktu Penyimpanan. Hamera Zoa – Majalah Ilmu Kehewanan Indonesia Volume II Nomor 1, Desember 2010.

Susanti, E. 2016. Identeksi Virus TSV (Taura Syndrome Virus) pada Udang Vannamei (Litopenaeus Vannamei) di Kabupaten Mempawah Hilir dengan Metode PCR (Polymerase Chain Reuction). Skripsi. Pontianak: Universitas Muhammadiyah Pontianak.

Koesharyani, dkk. 2015. Sebaran Infeksi Taura Syndrome, Infectious Myonecrosis, dan Panaeus vannamei Nervous Virus (TSV, IMNV, dan PvNV) pada Budidaya Udang Litopenaeus vannamei di Jawa Barat, Jawa Timur, dan Bali.

Department of Agriculture, Water, and the Environment of Australia. 2020. Infection with Taura Syndrome Virus (TSV).

07Mar

Tips

Tips on Taking Care of Shrimp Ponds During the Rainy Season

Taking care of shrimp ponds during the rainy season is the biggest challenge for farmers during cultivation. High rainfall is very risky for ponds because it can disrupt the balance of water parameters, directly impacting the health and productivity of shrimp ponds.

To ensure the long-term sustainability and profitability of shrimp farms, farmers must have a solid understanding of best practices for managing shrimp ponds during the rainy season.

In this article, we will discuss some tips and strategies on taking care of shrimp shrimp ponds during the rainy season so farmers can minimize risks and maximize aquaculture productivity.

Also Read: 7 Types of Shrimp Diseases that Often Occur During Cultivation

The Impact of the Rainy Season on Vannamei Shrimp Cultivation

The water quality parameter is the primary indicator of the success of vannamei shrimp cultivation. Optimal water quality can make vannamei shrimp farming a great success. On the other hand, poor and drastically changing water quality can cause vannamei shrimp to become stressed and susceptible to disease.

Following are some of the impacts of the rainy season on vannamei shrimp cultivation:

1. Temperature Changes

When it rains, pond water temperatures can drop to 2-3°C. Low temperatures make water conditions less than optimal, impacting metabolic rates and making shrimp activity slower, and they tend to gather at the bottom of the pond.

Not only has an impact on shrimp, but the activity of decomposing bacteria also decreases when the pond temperature is not in optimal conditions. This causes the accumulation of organic matter present in the ponds

2. Decrease in pH

Rain pH is usually around pH 6.5-7.0. Rain will directly lower the pH by 0.3-1.5 shortly.

3. Changes in Salinity and Alkalinity.

Rain can cause pond water to become thinner, so the salinity and alkalinity numbers also go down.

When the salinity drops, the shrimp will molt. However, the limited availability of minerals can lead to disease infection and cannibalism among shrimp.

4. Plankton Population and Organic Matter Accumulation

The impact of the rainy season on vannamei shrimp cultivation is the death of phytoplankton due to changes in water quality parameters. The dead phytoplankton will also accumulate as organic matter at the pond’s bottom.

The rainy season also makes the shrimp’s diet abnormal and tends to be lower. Therefore, the remaining feed will be more, and the processing is also slower and causing the accumulation of organic matter to increase.

5. Decreased Shrimp Immunity Level

Changes in water quality parameters due to rainwater can cause the ecosystem where shrimp live to become unstable. In addition, sudden changes can cause shrimp to become stressed, and experience decreased immunity, making them susceptible to disease infections.

Also Read: 5 Tips on Managing Vannamei Shrimp Ponds

Tips for Taking Care of Shrimp Ponds During the Rainy Season

1. Proper Pond Preparation

Preparing a proper pond is very important to maintain the health of the shrimp pond during the rainy season. Shrimp farmers must ensure that their ponds are cleaned properly and free of waste and impurities before the rainy season arrives.

In addition, it is necessary to construct suitable drainage channels and install pumps to drain the sewage to control the water level.

2. Maintaining Optimal Water Quality

Water quality is essential for successful cultivation, especially when the rainy season arrives. Excessive rainfall can cause a decrease in optimal conditions for pond water quality parameters.

Therefore, farmers must continue to monitor water quality regularly and take appropriate action when the rainy season comes, for example, by adding an aerator, adjusting the pH and salinity levels, reducing the frequency of feeding, and maintaining optimal water conditions.

3. Disease Management

Tips for taking care of shrimp ponds during the next rainy season are good disease management. During the rainy season, the growth of microorganisms, including bacteria and viruses, increases. This can cause shrimp to be susceptible to disease.

Farmers must take preventive measures, such as disinfecting ponds and equipment, implementing good hygiene and biosecurity protocols, and always monitoring for signs of shrimp disease.

4. Adjust Feeding

Feed management is an important aspect that must be considered when caring for shrimp ponds during the rainy season, where farmers must adjust their feeding schedule based on weather conditions and pond water quality.

Overfeeding can lead to poor water quality and increase the risk of disease. While giving less feed can inhibit the growth of shrimp.

In addition, make sure the feed given is of high quality and free from pathogenic contamination.

5. Always Monitor Weather Conditions

The last tip on taking care of shrimp ponds during rainy season is always to monitor weather conditions. Rainfall sometimes cannot be predicted precisely and accurately, so farmers must prepare what actions to take when it rains.

Some things that can be done include closing the pond and reducing the feed. In addition, always be alert for signs of flooding that can cause water quality problems and damage pond infrastructure.

Also Read: 5 Tips for Accelerating Vannamei Shrimp Growth When Cultivating

Vannamei Shrimp Cultivation More Productive with DELOS!

Maintaining and taking care of a shrimp pond during the rainy season can be a big challenge and a high risk. This is because rainwater directly affects the water quality parameters of ponds where vannamei shrimp live.

Therefore, farmers must make special preparations before the rainy season arrives. So, for those of you who want to start vannamei shrimp farming or increase your shrimp ponds’ productivity, DELOS is the right choice.

DELOS is the best science, technology, and operational management-based aqua-tech company that can help you increase the productivity of your vannamei shrimp farming.

DELOS Farm Management is also integrated with the AquaHero application, making it easier for you to monitor the condition of the shrimp in the pond just through the gadget every day.

To join the DELOS ecosystem, contact contact@delosaqua.com or submit via the contact column on our website, www.delosaqua.com. Vannamei shrimp farming is more productive with DELOS!

01Mar

Probiotics/Feeds

Benefits of Molasses and Tips on Using It for Shrimp Ponds

The benefits of molasses for shrimp ponds are one of the things that farmers must know. Molasses is a thick black liquid that is a by-product of the sugarcane-based processing industry.

In vannamei shrimp farming, the benefits of molasses for shrimp ponds can be seen from its role in accelerating plankton growth. Meanwhile, plankton is a natural food source for vannamei shrimp during cultivation.

Not only in vannamei shrimp cultivation, several ruminant and poultry farms also use molasses as a feed mixture. So what exactly is molasses, and what are its benefits? Come on, see more in this article.

Also Read: This is the Difference between Male and Female Shrimp

What is Molasses?

Molasses is a by-product derived from processing granulated sugar made from sugarcane. In a way, molasses is a production waste that benefits livestock and fisheries the most.

Among farmers and ranchers, molasses is often referred to as molasses. Meanwhile, its benefits are no longer in doubt because ruminant and poultry breeders have been using it as a feed mixture for a long time.

In vannamei shrimp farming, molasses is used as a source of growth for heterotrophic bacteria in making vannamei shrimp probiotics. Because, molasses can serve as a carbon source that becomes food for bacteria.

Benefits of Molasses for Shrimp Ponds

In contrast to poultry farming, the benefits of molasses for shrimp ponds cannot be given directly as a food supplement. Instead, molasses is used as a food source for bacteria which will later become natural food for vannamei shrimp.

In addition, probiotics produced from molasses fermentation are also useful in improving pond water quality, increasing the growth rate of vannamei shrimp, preventing pathogenic bacteria from growing in pond water, and reducing the feed conversion rate (FCR).

Also Read: Vannamei Shrimp DOC 20, How is it Growing and How is the Feeding?

Tips for Using Molasses for Shrimp Ponds

The benefits of molasses for shrimp ponds can be obtained if the molasses is given in the right dosage. Here are tips on using molasses for shrimp ponds.

1. Pay Attention to the Quality of the Molasses

Before providing molasses for shrimp ponds, it is important to ensure that the molasses you use is of good quality. Be sure to check the color and smell of the molasses first. Darker, stronger-flavored molasses tends to be of better quality.

In addition, make sure the molasses is free from contamination or impurities that can harm your vannamei shrimp.

2. Make sure the dosage of molasses is right.

The dose of molasses also must be done appropriately. To grow probiotic bacteria, molasses is needed at a dose of 2-5% of the total feed used.

While the addition depends on the pH of the water. If the pH is less than 7.5, giving molasses can be reduced. Meanwhile, if the pH is more than 8, then the use of molasses is added.

3. Monitor Water Quality Routinely

Molasses can increase the need for dissolved oxygen (DO) in water, affecting water quality in ponds. Therefore, monitoring water quality regularly is important and ensuring that dissolved oxygen (DO) levels are always optimal and sufficient for the shrimp.

Also Read: These are 7 Tips for Successful and Profitable Vannamei Shrimp Harvest

Consult your Vannamei Shrimp Cultivation at DELOS!

Even though it is classified as a by-product, molasses has considerable benefits for vannamei shrimp cultivation. Start by encouraging good bacteria growth, improving pond water quality, preventing pathogenic bacteria from growing, and reducing the feed conversion rate (FCR).

However, before using molasses in vannamei shrimp farming, you must first consult with an expert. This is to avoid using the wrong molasses during cultivation.

You can easily consult regarding vannamei shrimp farming, including using molasses for shrimp ponds at DELOS!

DELOS is the best science, technology, and operational management-based aqua-tech company that can help your vannamei shrimp farming succeed.

Through DELOS Farm Management, you can also take advantage of various farming features in AquaHero. Start by monitoring pond water quality, shrimp growth, and estimating the break-even point (BAP).

Contact the DELOS Team via contact@delosaqua.com or submit your questions about vannamei shrimp farming through the contact column on www.delosaqua.com. Consult your vannamei shrimp farming at DELOS now!

28Feb

Aquaculture

The Importance of Sea Level Altitude for Aquaculture

Shrimp cultivation is one of the industries that is growing rapidly in various countries in the world. One factor that determines this cultivation’s success is the sea level altitude.

However, the impact of recent climate change is rising sea levels. This change in sea level is visible and occasionally continues, extending to the vulnerable lowlands near the coast.

The consequences of rising sea levels are quite diverse, from the risk of major floods that can damage coastal areas to the impact on the fishing and aquaculture industries.

Directly, sea level altitude affects shrimp farming in several aspects, including water quality, salinity, and temperature. Here are some reasons why sea level is important for shrimp farming:

Also Read: What is Aquaculture and Why is It Important?

The Importance of Sea Level Altitude for Aquaculture

1. Water Quality

Water quality is one of the most important factors affecting the growth and survival of shrimp. The water quality of shrimp ponds is directly affected by sea level altitude.

Vannamei shrimp ponds usually use irrigation sources from the sea or estuaries. A higher sea level means more seawater enters the pond, indirectly obtaining water quality with high levels of dissolved oxygen and low pollution.

On the other hand, lower sea levels can cause stagnant water in ponds, which can lead to a buildup of harmful bacteria and algae, degrade water quality and cause disease outbreaks among shrimp. This can cause significant losses for shrimp farmers.

2. Salinity

Salinity is another factor that affects the growth and survival of shrimp. The optimal salinity level in vannamei shrimp ponds ranges from 15 to 25 parts per thousand (ppt).

Higher sea levels mean more seawater will enter the pond, increasing the water’s salinity level. Salinity that is too high can cause shrimp to become stressed, resulting in less than-optimal growth.

Conversely, lower sea levels can result in lower pond salinity levels, affecting shrimp growth and survival rates.

Therefore, farmers need to maintain the pond water salinity level always to be optimal.

3. Temperature

The temperature of the pond water is also affected by the sea level. Shrimp need an optimal temperature range of 28 to 32 degrees Celsius to thrive. Temperature fluctuations can also be affected by sea levels.

Higher sea levels can result in cooler water temperatures, which can slow down the growth rate of the shrimp. On the other hand, lower sea levels can cause higher water temperatures and can stress shrimp.

4. Disease Control

The sea level also plays an important role in controlling disease in vannamei shrimp farming. Higher sea level means more seawater entering the pond, which reduces the buildup of disease-causing bacteria and viruses.

Also Read: The Importance of Wastewater Treatment Plant (WWTP) for Shrimp Ponds

Shrimp Farm Equipment for Water Installation

When vannamei shrimp ponds are built higher than sea level, these ponds will require pumps and supporting installations to drain the water. This is necessary to ensure the quality of pond water when cultivation is properly maintained and optimal.

Intensive to super-intensive scale shrimp ponds rely heavily on seawater as the main water source. Therefore it takes the role of pumps and other supporting installations such as pipes which play a crucial role.

At least the pipes and pumps used are made of materials resistant to corrosive seawater. The pipes must also be strong and resistant to coastal climate and weather conditions.

Also Read: Cultivating Vannamei Shrimp with Biofloc System

Record and Monitor Pond Water Quality with AquaHero!

Sea level altitude is an important factor affecting the growth and survival of shrimp during cultivation. Shrimp need optimal-quality water to develop properly.

Therefore, you need to ensure that pond water quality is always optimal at all times. You can easily record and monitor pond water quality with the AquaHero app!

AquaHero is an application developed by DELOS to make it easier for you to monitor pond conditions every day. From water quality, shrimp growth, and action recommendations to BAP estimates during cultivation.

Immediately contact the DELOS Team via contact@delosaqua.com to try AquaHero’s features and make your vannamei shrimp farming easier and more traceable. Choose AquaHero to record and monitor your pond water quality!

24Feb

Fun Read

Types of Shrimp that are Often Cultivated in Ponds

Shrimp farming has become a popular business lately in various regions. Many types of shrimp that are often cultivated in ponds, each with unique characteristics, advantages, and disadvantages.

The shrimp often cultivated in ponds are also fishery export in Indonesia commodities. Names such as vannamei shrimp, tiger shrimp, giant prawns, and lobsters are the most popular in the market.

This article will discuss the various types of shrimp often cultivated in ponds and their advantages and disadvantages. Let’s read until the end!

Also Read: 5 Ways to Process Shrimp to Avoid a Fishy Flavor when Cooking

Types of Shrimp that are Often Cultivated in Ponds

1. Vannamei Shrimp (Litopenaeus vannamei)

Vannamei shrimp, or white-leg shrimp, is the most widely cultivated species worldwide. This shrimp originated from the eastern Pacific Ocean and was then widely introduced to other areas for cultivation.

Litopenaeus vannamei is classified as a species that grows fast and is ready to harvest when it reaches the age of 100-120 days. Its savoury and sweet taste makes vannamei shrimp popular among seafood connoisseurs.

2. Tiger Shrimp (Penaeus monodon)

Tiger Shrimp is a type of shrimp that is often cultivated in the second most ponds after vannamei shrimp. This shrimp comes from the Indo-Pacific region and is a species with high selling value in the market.

However, tiger shrimp grow relatively slower than other shrimp species. Overall until ready to be harvested, tiger shrimp need about six months.

3. Giant Prawns (Macrobrachium rosenbergii)

Prawns are a species of freshwater shrimp originating from Southeast Asia. This shrimp is a large species that can grow up to 30 cm long and is known for its sweet and juicy flesh.

Giant prawns are also a slow-growing species of shrimp to reach market size, which takes up to 180 days.

4. Lar Shrimp (Macrobrachium)

Lar shrimp, or freshwater shrimp, is a species that likes to live on the bottom of the waters or rivers that empty into the sea. Even so, this shrimp is also a type of shrimp that is often cultivated in ponds.

Prawns are classified as shrimp that are not too large. It can reach 12-18 cm in length.

Also Read: Promising Vannamei Shrimp Cultivation Prospect and Export Opportunities

5. Jerbung Shrimp (Fenneropenaeus merguiensis)

Jerbung shrimp may be a type often cultivated in ponds that you rarely hear about. However, the demand for this type of shrimp is very high because of its redder colour when cooked.

Because of this high market demand, the jerbung shrimp is considered an alternative species suitable for pond cultivation besides tiger prawns and vannamei shrimp.

6. Dogol Shrimp

Dogol shrimp is one of the most valuable shrimp on the market. This is because the demand for this type of shrimp is very high.

The physical characteristics of the dogol shrimp are quite striking compared to other shrimp species. The body of this shrimp is not too big but not too small, the skin is thicker and the texture tends to be rougher.

7. Red Palm Shrimp (Palaemon styliferus)

The type of shrimp that is often cultivated in ponds is the red palm shrimp. This shrimp is classified as small shrimp that can only grow up to 10 cm in adulthood.

Usually, red palm shrimp is more often processed for broth and ebi. The market price of this product is also very high.

Also Read: Vannamei Shrimp Feed Management Tips for Your Anti-Loss Cultivation!

Start Vannamei Shrimp Cultivation with DELOS!

You may already be familiar with the various types of shrimp that can be cultivated in ponds, such as vannamei shrimp, tiger prawns and giant prawns.

Even though it has high economic value, shrimp farming cannot be done haphazardly. Many factors influence its success, one of which is pond management.

Well, for those of you who want to start vannamei shrimp farming, now you can choose DELOS as a trusted companion for your cultivation.

DELOS is the best science, technology, and operational management-based aqua-tech company that can help you explore new opportunities in the aquaculture field.

DELOS Farm Management is also integrated with the AquaHero application, making monitoring pond conditions only through a gadget daily easier.

To join the DELOS ecosystem, contact contact@delosaqua.com or submit via the contact column on our website www.delosaqua.com to get the best offers. Start vannamei shrimp farming with DELOS!

23Feb

AquacultureTips

Vannamei Shrimp Stocking Density and How to Calculate It

One important aspect of aquaculture is determining the optimal vannamei shrimp stocking density. This can be done to consider the number of shrimp that can be accommodated from start to harvest in the pond that has been prepared.

Stocking density plays an important role in the success of aquaculture because excess density can cause poor water quality, disease attacks, and stunted shrimp growth in ponds.

In addition, shrimp stocking densities that are too high can also increase competition for food and space. So, what is the ideal stocking density for traditional, semi-intensive, intensive, and super-intensive ponds? Read more in this article.

Also Read: Vannamei Shrimp Salinity and How to Control Its Stability during Cultivation

Why is it Important to Consider Stocking Density?

Farmers must consider the stocking density of the vannamei shrimp they will choose before starting cultivation. This is because stocking density directly affects the growth and quality of the cultivated vannamei shrimp.

There are several other reasons why it is important to consider the stocking density, including:

1. Ensuring Optimal Shrimp Growth and Health

Traditional and intensive vannamei shrimp stocking densities significantly impact the growth and health of vannamei shrimp. Overcrowding can lead to poor water quality, increased competition for food and space, and increased risk of disease outbreaks.

Calculating the stocking density of vannamei shrimp and adjusting it to pond conditions ensures it can grow and develop optimally.

2. Maximizing Cultivation Results

Intensive vannamei shrimp stocking density is closely related to the cultivation results obtained later. The density that is too low in large ponds is the same as not utilizing available resources efficiently, so the yields are not optimal.

Conversely, a density that is too high and does not match the capacity of the pond can cause an increase in mortality and a decrease in growth rates. Therefore, by calculating the stocking density and adjusting it according to needs, farmers can maximize the potential of their ponds.

3. Cost Effectiveness

Vannamei shrimp cultivation is a lucrative business because the profits are very abundant. However, like business, this abundant profitability must be accompanied by cost-effective use during the cycle.

Calculating the stocking density of vannamei shrimp is one way to help cultivators determine capital and maximize their profits from this cultivation.

Too high density can lead to increased mortality, decreased growth rates, and increased FCR numbers. This will also impact increasing costs and reducing profits when the harvest arrives.

4. Disease Management

The density of vannamei shrimp directly affects the risk of disease outbreaks during cultivation. Pond ponds that are too dense can affect water quality, triggering disease outbreaks over time.

By calculating stocking densities and maintaining them at optimal levels, farmers can reduce the possibility of disease outbreaks and minimize the need for expensive shrimp health care.

5. Environmental Sustainability

Vannamei shrimp cultivation can cause significant environmental impacts, especially in intensive and super-intensive cultivation types that must be carried out sustainably.

The more shrimp cultivated in the pond, the more dirt and food scraps are produced during cultivation. Dirt and food scraps can turn into chemical compounds that harm the environment.

Therefore, by calculating the stocking density and maintaining it at an appropriate level, farmers can minimize the negative impact on the environment that may occur.

Also Read: Cultivating Vannamei Shrimp with Biofloc System

How to calculate the stocking density of Vannamei Shrimp

Calculating the stocking density of vannamei shrimp requires careful measurement and accurate recording. This is so that your cultivation can bring maximum profit and avoid losses.

Then, how to calculate the stocking density of vannamei shrimp? Here are the steps.

Calculate the Capacity of the Pond

The first step you have to take is to calculate the pond capacity that will be used for vannamei shrimp cultivation. How to calculate the area of a vannamei shrimp pond can be measured using a measuring tape or other measuring device.

If the pond you have is rectangular, you can use the volume formula as follows:

Volume = pond length (meters) x pond width (meters) x pond depth (meters)

For example, if you have a pond with a length of 10 meters, a width of 5 meters, and a depth of 3 meters. Then the capacity of the pond = 10 x 5 x 3 = 150 cubic meters.

After knowing the capacity of your vannamei shrimp pond, choose a stocking density following this capacity.

However, if you already know the area of the pond that you have for sure, you can immediately follow the second step, namely calculating the stocking density of vannamei shrimp.

Calculate the Stocking Density of Vannamei Shrimp

Vannamei shrimp stocking density depends on the cultivation method used. For example, use traditional, semi-intensive, intensive, or super-intensive cultivation methods.

The formula for total stocking density = pond area (square meters) x stocking density per meter

This total stocking density is usually used for calculating the amount of feed, aerators, and other pond needs.

The stocking density of vannamei shrimp in traditional ponds is usually a little, which is around 5-8 PL per square meter. If your pond is 100 square meters in area, then 100 x 5 = 500 shrimp fry that can be stocked in the pond.

While in intensive ponds, the stocking density of vannamei shrimp tends to be higher. The stocking density of intensive ponds is above 100 per square meter. At the same time, the calculation formula must also be adjusted to the number of wheels and aerators used.

Also Read: Do These 5 Things For Successful Vannamei Shrimp Cultivation

Choose DELOS as Your Vannamei Shrimp Cultivation Partner!

Overall, determining the optimal stocking density for vannamei shrimp requires careful consideration of various factors, including the pond area. Farmers must consider this carefully to ensure the optimal growth of shrimp.

Well, for those who want to get into the vannamei shrimp farming business, you can start easy and productive vannamei shrimp farming with DELOS.

DELOS is the best science, technology, and operational management-based aqua-tech company that can help you explore new opportunities in the aquaculture field.

DELOS Farm Management is also integrated with the AquaHero application, making it easier for you to monitor the condition of the shrimp in the pond just through the gadget every day.

Want to get pond supplies at affordable prices? AquaLink can now connect you with producers and farm owners to get and sell pond products at the best prices.

Contact the DELOS Team via contact@delosaqua.com or submit via the contact column on our website, www.delosaqua.com to get the best offer for your vannamei shrimp farming. Trust your farm management to DELOS!

21Feb

AquacultureTips

5 Tips on Managing Vannamei Shrimp Ponds

Success when cultivating always depends on our way of managing vannamei shrimp ponds. Both in terms of technical and non-technical factors. Therefore, farmers need to have good pond planning and management.

This method of managing shrimp ponds also directly affects harvest productivity. Thus, many factors must be considered in vannamei shrimp farming, such as human resource factors, feed management, shrimp health management, and the harvest process.

Here we have summarized some tips on managing shrimp ponds, especially for you, so that the harvests are as expected.

Also Read: These are 7 Tips for Successful and Profitable Vannamei Shrimp Harvest

Ideal Shrimp Pond

Talking about the ideal shrimp pond, the first thing that comes to your mind is how it is constructed. This is because construction has an important role in the sustainability of shrimp ponds.

So, here are the criteria for ideal shrimp ponds regulated in the Ministry of Maritime Affairs and Fisheries Regulation No. 75/PERMEN-KP/2016 concerning General Guidelines for Enlargement of Tiger Shrimp (Penaeus Monodon) and Vannamei Shrimp (Litopenaeus Vannamei).

Have sufficient water availability.
Ponds do not have dead spots.
Effective and efficient in the use of land and mills.
The bund as an access road in the pond must be passable by vehicles and workers.
Guaranteed maximum security and safety (K3).

If you have fulfilled the five criteria based on the Minister of Maritime Affairs and Fisheries Regulation No. 75 of 2016 above, you can then select the ideal pond location. Some of the criteria for an ideal pond location include the following:

The location of the shrimp ponds is under the Regional Spatial Plan (RTRW) and applicable regulations.
The location of the new shrimp ponds above/behind the shoreline (100 meters from the highest tide point) and the riverbank.
Having sufficient and good quality source water.
Located in an area protected from routine flooding and the influence of toxic and hazardous waste (B3) pollution.
Do not build new ponds on mangrove land and the core zone of the conservation area.
Do not build shrimp ponds in areas where saltwater seepage has the potential to affect surrounding agricultural areas or freshwater sources.
Adequate transportation and communication infrastructure is available.

Also Read: Promising Vannamei Shrimp Cultivation Prospect and Export Opportunities

Tips for Managing Shrimp Ponds

1. Choose the Right Pond Lining

The pond bottom lining is important to ensuring biosecurity during shrimp farming. Ground ponds directly exposed to water can trigger anoxic reactions, which are highly toxic to shrimp. Therefore, coatings such as high-density polyethylene (HDPE) plastic or concrete can be a solution.

In addition to biosecurity issues, using HDPE concrete and plastic layers also makes it easier to manage water and pond bottoms.

2. Consider Pond Design

The design of the vannamei shrimp pond has various shapes, including rectangular, square and round. This pond’s shape has advantages and disadvantages, as well as an effect on water flow and pond sediment accumulation.

While at the bottom of the pond can be designed with a central channel to minimize sedimentation. It works by utilizing the sedimentation and centrifugal currents generated by the aerator to push and concentrate the solids that settle in the middle of the pond.

Then, these solids can be manually pumped out of the pond through a pumping system connected to the sewer.

3. Place the Pond Aerator Properly

In intensive system vannamei shrimp farming, the aerator plays an important role in providing oxygen while helping to push sludge into the sewer. While the type and number of aerators can be adjusted to the needs of each pond based on pond size and stocking density.

To set up the aerator, you need to make sure that the aerator has covered all the corners and sides of the pond so that no mud remains untouched. There are two main designs for placing aerators: parallel and diagonal.

4. Clean the Pond Base Manually

The next tip for managing vannamei shrimp pond is routinely cleaning the pond’s bottom. Manual cleaning or suctioning of waste is good for maintaining optimal pond bottom quality.

So, how often should the bottom of the pond be cleaned? In general, there are no specific rules regarding how often to clean. However, it is recommended to do it once daily so that the waste that settles does not accumulate too much.

5. Periodic Basic Evaluation of Ponds

As the vannamei shrimp farming cycle progresses, it is very important to know the sediment condition at the bottom of the pond to prevent negative impacts. So it is necessary to evaluate periodically by taking sediment samples at certain points. The evaluation parameters include Redox potential, pH, pH2S, and NH4-N sol.

Sampling should be done regularly, at least twice per cycle. Precisely in the middle of the cultivation cycle when the mud begins to form and at the end of the cycle as an evaluation.

However, more frequent evaluations should be carried out in special cases such as mass mortality or slow growth of shrimp.

Also Read: 5 Stages of Vannamei Shrimp Pond Preparation Before Doing Cultivation

Choose DELOS as Your Shrimp Cultivation Partner!

Those are tips on managing vannamei shrimp ponds that you should pay attention to so that shrimp growth becomes optimal and produces a profitable harvest.

Managing shrimp ponds is not an easy thing to do. Therefore, if you need assistance in the cultivation of vannamei shrimp that you are doing, DELOS can be the best choice for you.

DELOS is the best science, technology, and operational management-based aqua-tech company that can help you explore new opportunities in aquaculture.

DELOS pond management is also integrated with AquaHero, making it easy for farm owners and farm personnel to monitor the condition of shrimp ponds in real-time only through gadgets every day.

Immediately contact the DELOS Team to get cultivation assistance via contact@delosaqua.com or submit via the contact column on our website, www.delosaqua.com. Choose DELOS as your shrimp farming companion!