June 2023

30Jun

4 Types of Vannamei Shrimp Farms You Have to Know

A shrimp farm is an artificial pond that is used as a habitat for aquaculture activities, one of which is vannamei shrimp. Generally, the pond’s location is near a spring, for example, in a coastal area.

Most people think all vannamei shrimp farms are the same. However, this is not the case. There are several types of farms around us based on management techniques and density levels.

The types of farms include traditional, semi-intensive, intensive, and super-intensive farms. So, what are the characteristics of these farms? Find the full answer in this article!

Also Read: 7 Easy Ways to Cultivate Vanname Shrimp for Beginners

Types of Vannamei Shrimp Farms

1. Traditional Farm

The traditional vannamei shrimp farm is a type of farm that is made quite simply with a relatively low scale of shrimp seed stocking density. Usually, this type of farm does not require a pump and waterwheel. Meanwhile, the change of water depends on the tides.

The stocking density of traditional farm or extensive shrimp farming is <50 shrimp/m².

Due to its relatively low density, traditional shrimp farms have an easier level of maintenance when compared to other types of shrimp farms. Likewise, the risk of shrimp getting diseases is also smaller.

2. Semi-Intensive Farm

The second type of shrimp farm is the semi-intensive farm. This type of farm has a higher stocking density than traditional farms. Therefore, pumps and waterwheels are needed, which are adjusted to the size of the farm area to manage the water flow.

The stocking density of semi-intensive vannamei shrimp ponds is <100 shrimp/m².

As for the feed problem, since the seeds are sown, semi-intensive farms usually directly use artificial feed as the main source of nutrition for vaname shrimp. Along with water quality, this feed is the most important part that must be considered during cultivation.

3. Intensive Farm

An intensive farm is a shrimp farm with a fairly high stocking density of seeds. Usually, this type of farm requires complex design and layout calculations. Starting from the depth of the water, the need for a pump, and the need for a waterwheel, it must follow the needs.

The stocking density of intensive vannamei shrimp ponds is >100 shrimp/m².

When building an intensive farm, waste management also needs to be considered. The reason is that the higher the farms’ density level, the higher the waste generated during cultivation.

4. Super Intensive Farm

The last type of vannamei shrimp farm is the super intensive farm. As the name suggests, this type of farm requires more complex maintenance than other types of ponds. Many considerations must be prepared, ranging from supporting equipment to the impact of cultivation on the environment.

Super-intensive shrimp ponds are the same as intensive ponds, but the size and stocking density is more prominent. Usually, the stocking density of semi-intensive shrimp ponds is >200 shrimp/m².

Starting from the design, layout, need for pumps, number and type of waterwheels, as well as technology and management, must continue to be considered because the impact will be huge on the sustainability of cultivation and the environment where the farm is located.

Also Read: DELOS Launches Inspirational Podcast on Aquaculture, DELOS Talks

The Importance of Choosing a Farm Location

tambak udang vaname — Source: DELOS Documentation

After knowing the types of farms above, you must already know that we must consider many things before building a shrimp farm. Moreover, for semi-intensive, intensive, and super-intensive farms. Therefore, choosing the right location is very important to do.

The selection of farm locations aims to get the right and appropriate location so that the vannamei shrimp cultivation process can take place properly and the resulting harvest can be optimal.

The ideal farm location must have a good topography level to facilitate farm construction, contain clay-containing soil to hold water and build dams, and have sufficient water supply farms.

Also Read: Get to Know Vannamei Shrimp as a Farmers’ Favourite

Start Vannamei Shrimp Cultivation with DELOS!

When you want to start vannamei shrimp cultivation, you need a fairly thorough preparation, one of which is in choosing the type and location of the shrimp farms. This is done to get optimal yields and avoid losses.

However, don’t worry because DELOS is here for you! DELOS is the best science, technology and operational management-based aqua-tech company that can help you explore new opportunities in aquaculture.

We use an approach to social, environmental, infrastructure and regulatory issues at the designated farm locations. In addition, our Farm Management is also integrated with the AquaHero app, which makes it easier for you to monitor the condition of your farms every day.

DELOS also has a Supply Chain Integration program to help our partners get the best products and prices for their shrimp farming.

So, contact DELOS immediately at contact@delosaqua.com or submit your questions via the contact column on our website www.delosaqua.com. Let’s start vannamei shrimp farming with DELOS!

28Jun

Disease

Recognize the Symptoms of IHHNV Disease in Vannamei Shrimp and How to Prevent It

IHHNV, or Infectious Hypodermal and Hematopoietic Necrosis Virus, is a disease caused by a viral infection that attacks vannamei shrimp. This disease can cause shrimp to become stunted and deformed in some body parts.

IHHNV disease can attack all stages of shrimp life, from eggs, larvae, postlarvae, and juveniles to adult shrimp. Therefore, you must be careful and mitigate if you encounter shrimp with IHHNV symptoms.

However, you don’t need to worry; read more about the symptoms and how to prevent IHHNV in this article!

Also Read: Get to Know Myo IMNV Disease in Vannamei Shrimp and Its Characteristics

Symptoms of IHHNV Disease in Vannamei Shrimp:

IHHNV disease infects the hypodermal and hematopoietic tissues of vannamei shrimp, such as gills, cuticle epithelium, connective tissue, lymphoid organs, and others. Symptoms can vary depending on the severity of the infection. Some of the common symptoms of IHHNV in vannamei shrimp include:

1. Decreased Appetite

Vannamei shrimp infected with IHHNV showed a decrease in appetite. This can lead to slower growth rates and poor shrimp survival rates.

2. Discoloration and Deformity of the Body

Shrimp infected with IHHNV can show discoloration and deformities, namely stunting in some parts of the body and deformity of the rostrum. In acute conditions, the shrimp skin will appear pale white, the body’s surface will be overgrown with bacteria or fungi, and necrosis is seen in the cuticles, nerves, and antennae.

Also Read: The Importance of Alkalinity in Shrimp Ponds, Check Your Alkalinity Now!

How to Prevent IHHNV in Vannamei Shrimp

There are several mitigation strategies that you can use to reduce the impact of IHHNV on the vannamei shrimp population in your pond, namely:

1. Implementation of Strict Biosecurity

Implementing strict biosecurity such as disinfecting ponds, water, and equipment, limiting interactions between people from outside the pond and the pond, and using disease-free broodstock and juveniles.

2. Do Early Detection and Treatment

Monitoring the condition of shrimp every day regularly can help you detect symptoms of IHHNV disease so that mitigation and treatment can be carried out immediately to reduce losses. Molecular disease checks using polymerase chain reaction (PCR), carried out regularly before stocking or during the cultivation process, are also very helpful in the early detection of IHHNV disease.

3. Implement Good Water Quality Management

Maintaining optimal water quality parameters with good management can also help you reduce stress on vannamei shrimp so that the shrimp are not susceptible to disease.

4. Select Disease Resistant Parent

Choosing parents who are genetically resistant to disease can help reduce the risk of infection in their offspring, including infection with IHHNV. The reason is that, in some cases, broodstock shrimp can reduce the disease in the fry produced.

5. Practice Good Feed Management

Good feed management will significantly help shrimp to meet their energy needs. Shrimp whose energy needs are met adequately will be more resistant to environmental stress and disease infection and grow faster.

6. Administer Immunostimulants and Feed Additives

Immunostimulants and feed additives, such as β-glucans, probiotics, vitamins, and others, can also improve the shrimp’s immune system to resist environmental stress and viral infections.

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

Find Out About IHHNV Disease and How to Treat It with DELOS!

IHHNV disease is one of the most dangerous diseases in shrimp because it can attack various life stages, from eggs to adult shrimp. Therefore, constantly monitor the health of your shrimp to prevent further spread of disease.

When symptoms appear that shrimp are infected with IHHNV, you should immediately consult with people who are experts in handling this disease. DELOS is one of them!

DELOS is an aquatech startup ready to help you deal with it. With a reliable and highly dedicated Science Team, we are ready to assist you in mitigating and preventing disease from occurring in your shrimp ponds.

Not only IHHNV disease, but the DELOS Science Team is also experienced in treating various other diseases. Such as white feces and Myo disease. So, no need to hesitate and immediately contact DELOS via contact@delosaqua.com or via the contact column and WhatsApp on our website, www.delosaqua.com, to get a solution to your shrimp disease problem!

26Jun

News

DELOS Schedules OPINI Webinar Series 2

DELOS, as an aqua-tech startup, is committed to expanding public knowledge about the world of aquaculture. After successfully organizing the first OPINI (Obrolan Pintar Terkini or Current Smart Talk) webinar on March 11, 2023, DELOS, in collaboration with DELOS Maritime Institute, is now scheduling the second OPINI webinar.

The upcoming OPINI webinar is titled “Microbiome Dynamics in Shrimp Culture,” aiming to explain the important role of microbial ecosystems and their impact on shrimp health. Here are the details of the DELOS & DMI OPINI Series 2:

Title: Microbiome Dynamics in Shrimp Culture

Date: Saturday, July 8, 2023

Time: 09:00 – End

Registration: bit.ly/OPINI-Delos

Meet Our Speakers

1. Prof. Dr. Ir. Peter Bossier – Director of the Lab of Aquaculture & Artemia Reference Center, Ghent University.

Topic: Microbial Ecosystem Management in Shrimp Pond

With a background as a Bioscience Engineer specializing in applied microbiology, Prof. Dr. Ir. Peter Bossier is internationally recognized as an eminent authority in the field of aquaculture research. His expertise lies in microbial community management, host-microbial interactions, and genetics.

2. Dr. Julie Ekasari S.Pi., M.Sc. – Co-Lead Guru at DELOS

Topic: Gut Microbiome and Water Microbiome Changes in the Event of Disease in Shrimp Culture

Dr. Julie Ekasari, S.Pi., M.Sc., is a researcher and aquaculture lecturer with over 20 years of experience. As part of the AquaHero Guru Team at DELOS, she conducts research to develop shrimp farms under the DELOS umbrella. Her published scientific journals serve as references for aquaculture research worldwide. Dr. Julie Ekasari has also been awarded as the 2nd Most Cited Author in the Field of Natural Science at IPB University for three consecutive years.

Secure Your Tickets Now!

DELOS invites all shrimp farmers, researchers, students, and anyone interested in the world of aquaculture to join the DELOS and DMI OPINI webinar.

Don’t miss this valuable opportunity to gain an in-depth understanding of the role of microbiomes in sustainable shrimp cultivation and engage in direct discussions with the experts. Register yourself through bit.ly/OPINI-Delos now!

23Jun

News

DELOS Takes Center Stage at the Shrimp Aquaculture Conference 2023

Shrimp Aquaculture Conference organized by Young Shrimp Farmers (PMI) was held from June 20th to 22nd, 2023 in Bali. SAC 2023 is a highly anticipated event brought industry experts, researchers, and farmers to share knowledge and explore advancements in the world of shrimp farming.

The Shrimp Aquaculture Conference has established itself as a premier platform for the exchange of ideas and innovations in shrimp farming. This year’s conference aimed to tackle critical issues such as disease evolution, the impact of environmental climate change, and the challenges posed by the global recession. With the rapid growth of the shrimp industry and the increasing demand for sustainable practices, the event provided valuable insights into the future of shrimp aquaculture.

Alexander Farthing, Chief Science Officer of DELOS, captured the attention of attendees with his engaging presentation. His topic, “What It Really Means to Use Science and Technology in Shrimp Farming,” delved into the role of scientific advancements and technological solutions in enhancing the sustainability and productivity of shrimp farming operations.

Farthing emphasized the importance of a holistic approach that combines scientific knowledge, cutting-edge technology, and best operational management practices to address the industry’s challenges effectively. He highlighted the role of DELOS in pioneering sustainable vannamei shrimp farming, showcasing their innovative solutions aimed at minimizing environmental impact and maximizing productivity.

DELOS, a leading company in the aquaculture sector, has been at the forefront of revolutionizing shrimp farming practices through the integration of science, technology, and sustainable methodologies. Their commitment to research and development has resulted in breakthroughs that enhance disease management, optimize feed efficiency, and promote responsible resource utilization.

During the conference, DELOS showcased their sustainable vannamei shrimp farming practices, demonstrating the successful implementation of their scientific and technological innovations. Visitors were introduced to state-of-the-art systems and methodologies that enable farmers to minimize the use of antibiotics, improve water quality, and enhance overall farm performance.

The DELOS team interacted with conference attendees, fostering knowledge sharing and collaboration among shrimp farmers, researchers, and industry experts. Their participation aimed to not only showcase their advancements but also inspire and empower others to adopt sustainable practices and contribute to the growth of the global shrimp farming community.

The Shrimp Aquaculture Conference 2023 in Bali proved to be a resounding success, providing a platform for industry stakeholders to come together, exchange ideas, and explore new possibilities. With the insightful presentation by Alexander Farthing and the participation of DELOS, the conference shed light on the immense potential of science, technology, and sustainable practices to shape the future of shrimp aquaculture. As the industry continues to evolve, events like this will play a crucial role in driving innovation and ensuring a sustainable and prosperous future for shrimp farming worldwide.

22Jun

Fun Read

These are 11 Characteristics of Healthy and Diseased Shrimp

Vannamei shrimp farming is a business that many people worldwide are involved in. The broad market potential makes vannamei shrimp excellent. However, disease attacks also continue to lurk during cultivation. Therefore, identify the following characteristics of healthy and diseased shrimp.

The characteristics of healthy and diseased shrimp can be seen from their physical, behavioral, and physiological indicators. Understanding these characteristics can help farmers take the following steps regarding the condition of the shrimp.

So, what are the characteristics of healthy and diseased shrimp? Read more in this article!

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

Characteristics of Healthy Shrimp

1. Active Swimming and Responsive

The characteristics of healthy shrimp can be seen from the level of activity. Healthy shrimp will usually actively swim around and be responsive. For example, when fed, healthy shrimp will surface.

2. Clear and Bright Colored Body

Clear and bright body color can indicate that the shrimp is in a healthy condition. Meanwhile, shrimp with shells that are dull, faded, or discolored can be an indication of a health problem.

3. Hard Body Texture

Healthy shrimp have a hard and dense body texture. There should be no mucus or body that is soft to the touch.

4. Have a Good Appetite

A good appetite for shrimp can also be an indicator of healthy shrimp. Healthy shrimp will eat regularly and eat the food that has been provided.

5. No Signs of Stress

The last characteristic of healthy shrimp is the absence of signs of stress, such as being lethargic, hiding at the bottom of the pond, and showing signs of aggression towards other shrimp.

Also Read: 5 Tips on Managing Vannamei Shrimp Ponds

Characteristics of Diseased Shrimp

1. Lethargic or Weak

The first characteristic of diseased shrimp is that they appear lazy or weak. Usually, the shrimp will move slowly or even not move at all. Diseased shrimp will tend to stay on the bottom of the pond even when being fed.

2. Has Faded Color

Diseased shrimp have discolored or faded shells. In addition, several diseases such as myo disease and white spots can also trigger discoloration of the shrimp’s body.

3. Slimy or Mushy Texture

Diseased shrimp usually have slimy or mushy bodies. This slime usually covers the entire outside of the shrimp.

4. Decreased appetite

The following characteristic of diseased shrimp is a reduced appetite for shrimp. Sick shrimp tend to have no appetite and do not eat feed regularly, so there will be lots of leftover feed in the ponds.

5. Showing Signs of Stress

Signs of stress, such as staying at the bottom of the pond or showing aggressive behavior towards other shrimp, can also be a sign of diseased shrimp.

6. Abnormal Behavior

Their abnormal behavior, such as swimming upside down or circling, can identify Diseased shrimp.

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

Consult Your Shrimp Conditions On DELOS!

Characteristics of healthy and diseased shrimp should always be a concern for farmers. Healthy shrimp are usually active, have clear and bright bodies, have a good appetite, and show no signs of stress.

Meanwhile, on the contrary, the characteristics of diseased shrimp are that the shrimp looks lethargic, the shell changes color, the body is slimy, the appetite decreases, shows signs of stress, and shows abnormal behavior.

For those of you who have shrimp that show signs of being sick, immediately carry out further tests to detect the disease suffered by the shrimp and prevent the spread of disease outbreaks.

You can consult the health condition of your shrimp on DELOS. With the best dedicated scientific team, DELOS can help you detect as well as mitigate in the event of a disease attack in your shrimp pond.

So, if your shrimp shows the characteristics of diseased shrimp as explained above, 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. What are you waiting for? Immediately consult the condition of your shrimp on DELOS before it’s too late!

17Jun

AquacultureTechnology

Parts of Sustainable and Environmentally Friendly Ponds

Ponds are places where shrimp, fish, and other aquaculture commodities are cultivated. In practice, parts of the pond should be manufactured according to sustainable and environmentally friendly standards.

As a place where shrimp grow, ponds must be designed and given special care to provide ideal conditions for shrimp. This pond consists of various essential parts to function correctly and produce high productivity.

Therefore, below we have summarized the parts of a sustainable and environmentally friendly pond that you can use as a reference.

Also Read: 5 Types of Shrimp Pond Aerators and Their Functions

Environmentally Friendly Parts of Ponds

1. Quarantine Pond

The first parts of the pond are quarantine ponds which function as water reservoirs with standard water quality standards. This quarantine pond is used as a water supply when changing new water to rearing ponds or reservoir ponds.

Quarantine ponds are placed before rearing ponds to facilitate water distribution. Optimally, a quarantine pond can accommodate between 30-50% new water, depending on the level of technology applied.

2. Water Distribution Channels

The next part of the pond is the water distribution channel which helps divide water into each rearing pond. Usually, the water distribution channel is placed on a strategic side to facilitate the distribution of water.

For ponds that are small in scale, this pond is usually combined with a quarantine pond to save land.

3. Cultivation Pond

The fry is stocked and raised in a rearing pond until harvest time. Ideally, this pool is located in the middle of the pond. Meanwhile, the area of the pond depends on the cultivation system being run, for example, for an intensive system between 2000-4000 square meters.

Rearing ponds can be square or circular. However, ideally, each corner should be obtuse to facilitate water and waste management at the bottom of the pond.

4. Sludge Pond

As the name suggests, a sludge pond is a storage area for sludge originating from the rearing pond. This pond is located near the water and waste disposal center to facilitate its operation.

Also Read: The Importance of Alkalinity in Shrimp Ponds, Check Your Alkalinity Now!

5. Reservoir Pond

Reservoir ponds or also known as biofilters, are ponds used to filter organisms, pests, and diseases that can harm shrimp. These ponds are usually located after settling patches.

In reservoir ponds, seaweed, mangrove shells, oysters, and mangrove plants are usually found, which function as biofilters to absorb toxic substances such as NH3, CO2, and nitrites in the water.

6. Waste Treatment Pond

The next part of the vannamei shrimp pond is the waste treatment pond, a reservoir for wastewater from the grow-out pond. The water will be chemically and biologically sterilized in this pond before being discharged into the sea.

7. Central Sewer

The central drain is a water disposal system in the middle of a shrimp-rearing pond. This channel is made of cast cement in a round shape to drain water toward the sewer. While in terms of size, it can be adjusted to the needs of each pond.

8. Monik’s Door

The last parts of the pond are monik doors and water discharge gates. This door is made of cast cement and buis concrete, with a control door on the bund’s inner side.

The size of the monic gate depends on the pond area and the existing bund construction. In simple ponds, the drain gate is usually not made of concrete but of wood or PVC.

Also Read: How to Maintain the Water Quality for Vannamei Shrimp Ponds to Stay Optimal

Choose DELOS for your Vannamei Shrimp Cultivation

Applicable regulations must design parts of the pond, of course, also to ensure sustainability. Moreover, the pond is a place for cultivating vannamei shrimp, so it must be made as similar as possible to the original ecosystem.

For those of you who want to start building ponds, DELOS is the right place for you. 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 supported by the AquaHero application, which can make it easier for you to monitor the condition of the shrimp in the pond just through a gadget every day.

Want to get pond supplies at affordable prices? AquaLink can 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 our website contact column at www.delosaqua.com to get the best offer for your vannamei shrimp farming business. Manage your shrimp ponds with DELOS!

14Jun

AquacultureTips

4 Elements of Vannamei Shrimp Farm Management That Must Be Considered

Lately, vannamei shrimp cultivation is growing rapidly and is in great demand because of its advantages compared to other types of shrimp. However, cultivating without good farm management could even be a loss.

Various benefits can also be obtained if we apply good farm management. Starting from feed efficiency, preventing shrimp from disease attacks, and maintaining environmental sustainability, so that the productivity of the resulting pond can be maximized.

Then what should be considered in good shrimp farm management? Read until the end of this article to find the answer!

Also Read: 10 Types of Shrimp for Aquaculture and Aquascape

1. Water Quality Management

farm management yang baik — Source: DELOS Documentation

Water is the main component in aquaculture, so every aquaculture activity must have good water quality management as well. Then, how to have it? Well, the first thing that we have to do is monitor water quality. This could inform you if there is a change in water quality parameters during cultivation.

Water quality measurements are carried out physically, chemically, and biologically. Physical measurements can be carried out directly in each shrimp pond with parameters pH, temperature, DO, and water salinity.

Meanwhile, chemical and biological parameters can be carried out in the laboratory with parameters such as alkalinity, an abundance of plankton species, total bacteria, total vibrio, nitrite, nitrate, ammonia, phosphate, TOM, and total suspended solids.

In addition, the basic management of shrimp ponds must also be considered for the sustainability of aquaculture. The basic management of this pond includes the layout of the waterwheel, the activity of removing sludge, and the treatment of decomposing bacteria.

2. Vannamei Shrimp Feed Management

Manajemen pakan udang — Source: DELOS Documentation

Vannamei shrimp feed management is another element that must be considered in shrimp farm management. The goal is to maximize feed use to support success and efficiency in shrimp cultivation.

Feed management is important in terms of the efficiency of capital spending during cultivation. This is because almost 60% of the capital is spent on feeding vannamei shrimp.

Several steps in feed management can be done through blind feeding, feeding after the first month, and using anco control.

Also Read: Types of Vannamei Shrimp Feeds to Make Your Shrimp Grow Faster

3. Shrimp Health Management

Manajement kesehatan udang — Source: DELOS Documentation

Vannamei shrimp health management is carried out to observe any changes in the shrimp. These changes are usually signs of health problems and certain diseases that attack the shrimp.

Observations can be made first by looking at the characteristics of healthy shrimp, such as having active movements, complete and intact limbs, red and bright gills, full and unbroken gut contents, proportional body shape, bright skin color and clean, tail intact, and normal length growth.

If some anomalies or discrepancies appear during a health observation, be sure to immediately investigate and mitigate the disease.

4. Aquaculture Waste Management

Vannamei Shrimp Farm Management — Source: DELOS Documentation

As we know, aquaculture, including vannamei shrimp, produces organic waste that can pollute the surrounding waters. Therefore farmers need to have aquaculture waste management.

Farm waste is mostly in the form of easily degraded organic waste. These wastes come from feed residues, fermented materials, shrimp manure, and other organisms in the pond.

The management of vannamei shrimp culture waste can be carried out by being disposed of or cleaned through a siphon channel, decomposed with probiotics, or oxidized with oxygen.

Also Read: 7 Easy Ways to Cultivate Vannamei Shrimp for Beginners

Entrust Your Vannamei Shrimp Farm Management to DELOS!

Good farm management is the key to the success of vannamei shrimp cultivation. There is also no need to doubt the benefits of good shrimp farm management.

Especially if you entrust the management of your shrimp pond to DELOS, with a team consisting of the top 99 best people in Indonesia in shrimp farming, DELOS is ready to help you through our Farm Management.

DELOS Farm Management integrates with the AquaHero application, making it easier for farmers to monitor their shrimp ponds. So what if a disease is detected? DELOS also has a dedicated scientist who can help you mitigate the diseases found on your shrimp farm.

Contact DELOS immediately via contact@delosaqua.com or submit a problem you want to discuss vannamei shrimp cultivation via the contact column on our website www.delosaqua.com. Entrust your shrimp farm management to DELOS!

12Jun

AquacultureNews

DELOS Maritime Institute Batch 3: Shaping the Future of the Laboratory Analyst and Shrimp Aquaculturist

DELOS Maritime Institute is a training program to produce competent and professional human resources in the aquaculture field. Through this program, participants will gain knowledge and experience from experts to prepare them to enter the world of work.

This DELOS initiative program will equip young people with the skills and knowledge needed to become proficient Lab Analysts and Shrimp Aquaculturists.

With a focus on the sustainable name shrimp aquaculture practices, through this program, DELOS is committed to continuing to carry out this program as a form of responsibility towards industrial development.

DELOS Maritime Institute Batch 3 Officially Started

DELOS Maritime Institute Batch 3 officially started on June 12, 2023. A total of 23 participants were selected to participate in a six-day theory class to strengthen their basic knowledge and understanding of aquaculture principles and practices.

In this theoretical class, various materials are taught directly by experts, including Shrimp Biology by Dr Julie Ekasari, S.Pi., M.Sc., Fundamentals of Shrimp Cultivation by Dr Desy Putri Handayani, S.Pi., M.Sc., and Vaname Shrimp Cultivation by Ir. Wayan Agus Edhy on the first and second day.

On the third and fourth days, participants received material on Shrimp Feeding and Digestion by Dr Ichsan Achmad Fauzi., S.Pi., M.Sc., Management System and General Supporting for Shrimp Ponds by Andhika Rakhmanda, Shrimp Health & Disease and Shrimp Health Management by Intan Chandra Dewi.

While on the fifth and sixth days, DMI Batch 3 participants received material on Ideal Pond Construction by Wildan Nurussalam, S.Pi., M.Sc., Occupational Safety and Health by Shella Marlinda, Management System in the Laboratory by Erwanda Bayu Pamungkas, and Shrimp Business Management by Bobby Indra Gunawan.

In addition to specific material on vannamei shrimp farming, DMI Batch 3 participants received introductory material on AquaHero and Work Culture at DELOS from the DELOS Product Team and People Team.

Nine Participants Pass Field Practice Class

After completing the Theory Class, DELOS Maritime Institute participants proceed to the Field Practical Class. However, not all Theory Class participants passed this stage; only nine people.

In this Field Practice Class, DMI Batch 3 participants will be confronted directly with real scenarios and challenges in vannamei shrimp farming in ponds. Here, they can apply the knowledge gained during the Theory Class and develop their skills under the guidance of the DELOS Farm Manager and Lab Analyst.

During this Field Practice Class, participants learn and do various things, including pond preparation, water quality testing, feed formulation, monitoring of shrimp diseases, and recording multiple stuff they encounter in the pond.

DELOS Maritime Institute Batch 3 Becomes a Transformative Journey for Young Aquaculture Generation

DELOS Maritime Institute Batch 3 was a transformative journey for the selected participants. This program not only equips them with the technical expertise needed in the industry but also instils a deep appreciation for sustainable practices and the importance of maintaining a balance between aquaculture and the environment.

DELOS remains committed to supporting the development of the aquaculture sector and preparing the next generation of professionals through initiatives such as the DELOS Maritime Institute.

By investing in the education and training of young talent, DELOS aims to contribute to the growth and sustainability of the aqua-tech industry, encouraging innovation and responsible practices.

As Batch 3 ends, DELOS Maritime Institute looks forward to welcoming a new batch of Lab Analysts and Shrimp Farmers, who will continue the mission of transforming aquaculture and positively impacting the industry’s future.

10Jun

AquacultureTips

Cultivating Vannamei Shrimp with Biofloc System

Vannamei shrimp biofloc has become a popular cultivation system lately. Biofloc technology was first applied by Dr. Yoram Avnimelech in Israel and experienced immediate success. Finally, the biofloc system was also implemented in shrimp ponds in Indonesia.

In a way, the vannamei shrimp aquaculture biofloc system is a form of innovation to address feed problems experienced by farmers. The reason is by implementing the biofloc system, the shrimp’s natural feed supply becomes more abundant.

Farmers who want to apply the biofloc system to vannamei shrimp cultivation must practice it correctly because a bit of wrong in practice can be fatal.

Therefore, here we have summarized the method of cultivating vannamei shrimp using the biofloc system, which you can use as a reference.

Also Read: Get to Know Myo (IMNV) Disease in Vannamei Shrimp and Its Characteristics

What is the Biofloc System?

Biofloc is a bunch of microorganisms such as bacteria, protozoa, fungi, plankton, and organic matter from undecomposed waste.

While the biofloc system attempts to utilize leftover shrimp feed waste to become microbial feed, the rest of the feed waste will be degraded, and the microbes in it will develop and multiply until, finally, the floc is produced.

Floc can be a good source of protein for shrimp. This is because decomposed organic compounds contain carbon (C), hydrogen (H), oxygen (O2), nitrogen (N), and phosphorus (P) compounds.

With the vannamei shrimp biofloc, the farmers can reduce operational costs, which are usually used to purchase feed. This is because the biofloc system can lessen the Feed Conversion Ratio (FCR) while minimizing disease outbreaks.

However, keep in mind that the biofloc system does not affect overall farm productivity because the microorganisms formed only serve as additional feed.

Vannamei shrimp cultivation using the biofloc system can be applied to start from intensive to super-intensive system ponds that have high stocking densities. However, firstly the pond must have a high level of aeration with the appropriate wheel position. The pond must be covered with concrete or high-density polyethylene (HDPE), as well as additional pellets and molasses.

In addition, farmers must always carry out biofloc control during vannamei shrimp cultivation.

How to Cultivate Vannamei Shrimp with the Biofloc System

Until now, many Indonesian shrimp farmers are interested and have applied the biofloc system. However, few also experience failure due to a lack of understanding of this technology.

Therefore, here is a method of cultivating vannamei shrimp with the biofloc system that you can practice.

1. Prepare the Pond very Well

The vannamei shrimp biofloc system can only be applied in some ponds. Particular standards must be met so that the cultivation of vannamei shrimp goes well and does not suffer losses.

The standards for pond ponds that must be met include pond sizes adapted to the cultivation system, ponds that do not leak and have been coated with thick HDPE concrete or plastic, sound aeration systems, and pond heights ranging from 0.8-3 meters.

2. Choose the Right Probiotic Bacteria

The vannamei shrimp biofloc system relies on probiotic bacteria for each pond. Bacillus subtilis is a type of probiotic bacteria that can be selected because this bacteria can decompose nitrogen elements properly and can maintain water quality.

Another type of bacteria that can be used is Bacillus cereus which can form bacterial flocs while controlling the growth of green algae.

3. Make Biofloc Starter

After selecting probiotic bacteria, the next step is to make a biofloc starter. This stage is the same as fermentation to increase the number of bacteria in the pond, which functions as a quality guard for Biopolymer (PHA), which helps the process to suppress harmful pathogens.

Also Read: Tiger Shrimp vs Vannamei Shrimp: Which One is Better for Cultivation?

4. Spread High-Quality Shrimp Fry

When the ponds with biofloc technology are ready, farmers can start spreading the shrimp fry into the pond. However, to get the best quality cultivation results, choose high-quality and certified fry.

5. Perform Proper Feed Management

When the flock has not been formed, farmers can provide feed like ordinary vannamei shrimp cultivation. For example, feeding in pellets twice a day according to needs.

Then when the flock has begun to form, you can start reducing feeding because this is where the role of floc is as a natural food source for shrimp. With this flock, farmers can reduce FCR and save farm operational costs.

6. Ensure Dissolved Oxygen Supply (DO) is fulfilled

When choosing to use biofloc technology, farmers must ensure a continuous supply of dissolved oxygen (DO). This is because ponds that lack an oxygen supply can cause the shrimp in them to die.

To ensure that the supply of dissolved oxygen (DO) is met, farmers can use aerators or waterwheels as additional tools to supply extra oxygen. In addition, make sure the number of aerators or water wheels per the pond’s area.

In biofloc vannamei shrimp farming, the aerator or waterwheel not only acts as an oxygen supply but also keeps the biofloc suspended. However, it should be noted that high levels of suspended biofloc biomass can cause a decrease in pond water quality and ultimately result in crop failure.

Advantages and Disadvantages of the Biofloc System

The biofloc system is only sometimes superior to the vannamei shrimp farming system. There are positive and negative sides to this cultivation system. Following are the advantages of biofloc technology:

Very high biosecurity
Production capacity and carrying capacity are usually 5-10% higher
Shrimp grow bigger with lower FCR
15-20% lower production costs

Meanwhile, the shortcomings of the biofloc system include the following:

Requires a high energy supply for the aerator
Failure of energy supply for more than 1 hour can be fatal and critical
The biofloc pond must be lined
Technicians must receive specific knowledge and training to understand this technology fully.

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

Successful Vannamei Shrimp Cultivation with DELOS

Implementing the vannamei shrimp biofloc system might be even more difficult for the farmers if you need help understanding this technology as a whole. Just a little wrong, it can be fatal for shrimp farming that is done.

For the vannamei shrimp farming that you are doing to be successful and run well, you can consult with DELOS. The DELOS team is ready to help you manage your shrimp pond and provide recommendations for problems you are experiencing.

DELOS Farm Management is also integrated with the AquaHero application, making it easy for farm owners and farm technicians to monitor their shrimp ponds daily.

Need help with supply issues for pond needs? DELOS also has a Supply Chain Integration program, namely AquaLink. We can help connect you with producers and farm owners to get and sell pond products at the best prices.

You can quickly contact the DELOS Team via contact@delosaqua.com or submit via our website contact column www.delosaqua.com, to find out more about our Farm Management and Supply Chain Integration programs. Trust your farm management to DELOS!

08Jun

Disease

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

Acute Hepatopancreatic Necrosis Disease, also known as AHPND disease in vannamei shrimp, is a problem that farmers often face. This disease can cause mass death resulting in heavy losses and harvest failure.

Acute hepatopancreatic necrosis disease (AHPND) originates from a bacterial infection with a strain of Vibrio parahaemolyticus (Vp AHPND). This disease is also known as early mortality syndrome (EMS), which can cause farm productivity to decrease by up to 60% and result in considerable losses.

To be on time in carrying out mitigation if attacked by AHPND, farmers must know its characteristics. Here we summarize some of the characteristics of Acute Hepatopancreatic Necrosis Disease (AHPND) that you can use as a reference.

Also Read: Vannamei Shrimp Probiotics and Its Benefits for Cultivation

What is AHPND?

Acute Hepatopancreatic Necrosis Disease or AHPND disease in vannamei shrimp is a disease caused by bacterial infection with the Vibrio parahaemolyticus (Vp AHPND) strain.

AHPND disease first appeared in China in 2009 and then spread to Vietnam in 2010, Malaysia in 2011, Thailand in 2012, Mexico in 2013, the Philippines in 2015, and South America in 2016.

As a result of the outbreak of AHPND disease in vannamei shrimp in these countries, shrimp production has decreased by up to 60%, resulting in considerable losses.

Not only attacking vannamei shrimp, but AHPND disease also attacks other shrimp species, such as P. monodon (tiger prawn), M. rosenbergii (giant prawn), and other types of crustaceans.

Usually, shrimp in the early life phase is more susceptible to AHPND infection. Furthermore, AHPND attacks the digestive glands (hepatopancreas) and destroys hepatopancreatic cells R (resorptive), B (blister), F (fibrillar), and E (embryonic) which results in organ dysfunction leading to massive death.

Also Read: Get to Know Myo IMNV Disease in Vannamei Shrimp and Its Characteristics

Characteristics of AHPND Disease in Shrimp

Vannamei shrimp infected with AHPND usually look lethargic and exhibit abnormal swimming behavior. Apart from this, here are other characteristics when shrimp have been infected with Acute Hepatopancreatic Necrosis Disease.

1. Infecting the Early Life of Shrimp

Acute Hepatopancreatic Necrosis Disease in vannamei shrimp infects in the early phase of cultivation, from the 1st to the 35th day of cultivation. Usually, this will be followed by the mass death of up to 100% of the stocked shrimp.

2. Shrimps Have No Appetite

AHPND disease causes shrimp to have no appetite and thus show symptoms of anorexia. Furthermore, this symptom is followed by emptying the digestive tract and loss of tissue pigmentation.

3. Shrimp growth slows down

Shrimp with no appetite due to AHPND infection indirectly triggers slower shrimp growth. This is because the growth of shrimp is directly influenced by the food consumed.

4. The digestive tract becomes empty

Shrimp that has been infected with AHPND disease show an empty digestive condition. Because this disease attacks the digestion of shrimp directly.

5. Hepatopancreas Turns Pale

When infected with AHPND disease, the vannamei shrimp hepatopancreas tissue will experience fragility at the beginning of the infection. Then as the disease progresses, this tissue will become pale and rigid.

6. Appearance of Black Spots on the Hepatopancreas

After becoming pale and rigid, the next phase will appear with black spots or fine lines on the hepatopancreas. These black spots indicate foci of melanization in the tubular cells of the hepatopancreas.

7. High Mortality Rate

The death rate from AHPND disease in vannamei shrimp reaches 100% in most countries. However, in several other countries, it shows the opposite, namely a low death rate.

The difference in tolerance for death rates is because regions with low mortality rates have had a history of similar diseases. This makes the vannamei shrimp’s immune system better compared to other areas.

How to Overcome AHPND Disease in Shrimp

Only now the treatment for AHPND disease in vannamei shrimp is known with certainty. However, farmers can take preventive measures in farm management, for example, by aeration, providing appropriate feed, and maintaining pond water quality.

Diseases caused by pathogenic bacteria in vannamei shrimp are generally controlled using appropriate management strategies, including immunostimulant supplementation, prebiotics, probiotics, maintaining water and feed quality, and maintaining pond aeration.

However, this control cannot stop the spread of the disease when the vannamei shrimp have been attacked by Acute Hepatopancreatic Necrosis Disease. Conventional approaches such as stopping feeding or giving disinfectants can be another solution, although the success rate is also relatively low.

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

Prevent AHPND Disease in Vannamei Shrimp with DELOS!

Until now, there is no known way to deal with Acute Hepatopancreatic Necrosis Disease or AHPND disease in vannamei shrimp. However, farmers can take early prevention by carrying out proper farm management.

Therefore DELOS has Farm Management that can assist you in managing shrimp farms following international standards.

With a scientific and operational team that has been reliable and experienced for years, DELOS is ready to assist you in managing shrimp farms, including mitigating if the disease is detected in your shrimp farms.

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