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Author: Sukma Dewi Fortuna
Home Sukma Dewi Fortuna Page 14
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!

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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!

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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!

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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!

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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).

  1. Have sufficient water availability.
  2. Ponds do not have dead spots.
  3. Effective and efficient in the use of land and mills.
  4. The bund as an access road in the pond must be passable by vehicles and workers.
  5. 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:

  1. The location of the shrimp ponds is under the Regional Spatial Plan (RTRW) and applicable regulations.
  2. The location of the new shrimp ponds above/behind the shoreline (100 meters from the highest tide point) and the riverbank.
  3. Having sufficient and good quality source water.
  4. Located in an area protected from routine flooding and the influence of toxic and hazardous waste (B3) pollution.
  5. Do not build new ponds on mangrove land and the core zone of the conservation area.
  6. Do not build shrimp ponds in areas where saltwater seepage has the potential to affect surrounding agricultural areas or freshwater sources.
  7. 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!

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15Feb
News

DELOS Maritime Institute Will Host Free Webinar About Shrimp Diseases

 

Vannamei shrimp farming is a lucrative business and has been occupied by many lately. However, it has challenges. One of the obstacles faced when carrying out vannamei shrimp farming is shrimp disease attacks.

Disease attacks can cause significant production losses and, in some cases, mass mortality of the shrimp in the culture. Of course, this is a frightening specter for all shooters.

To help farmers to overcome this problem, the DELOS Maritime Institute is holding a webinar entitled OPINI DMI, or DELOS Maritime Institute’s Latest Smart Chat, with the theme “Cultivation Challenges in the Era of Shrimp Disease Attacks,” which will be held on Saturday, March 11, 2023.

In the OPINI DMI Webinar, we will join with leading experts in vannamei shrimp farming, especially on shrimp diseases, who will provide valuable insights on how to prevent and deal with disease attacks during cultivation.

Also Read: DELOS Maritime Institute Graduated 12 Participants Who are Ready to Enter the World of Work

Benefits of Joining the OPINI DMI Webinar

The speakers who will fill in this webinar are Dr. Ir. Heny Budi Utari, M.Sc. and Wayan Agus Edhy. The two speakers will present various topics, including the latest research on shrimp diseases, best practices for disease prevention, and innovative solutions.

The speakers also have years of experience working with shrimp farmers and have helped businesses overcome challenges associated with shrimp diseases. By attending this webinar, you can discuss and ask questions directly.

Another benefit of participating in this webinar is connecting with other shrimp farmers. Shrimp farming can be a single business, and finding someone who understands your challenges can be difficult. Attending these webinars allows you to connect with people who share your interests and passions.

Also Read: DELOS Maritime Institute Collaborates with Undip, UGM, UPS Tegal, and Politeknik KP Pangandaran in Order to do Tridharma of Higher Education

How to Register for Webinars

The OPINI DMI webinar will be held free of charge via Zoom meeting and YouTube DELOS. However, to become a participant, you need to fulfill the following requirements:

  1. Share OPINI DMI webinar posters to Instagram stories or group chats with a minimum of 5 members.
  2. Follow our Instagram account @delos.institute
  3. Upload the first and second proof of requirements to the registration link.
  4. Fill in the registration form at https://bit.ly/Daftar-OPINI-DMI-1
  5. Join our group at https://t.me/DelosInstitute (telegram) and https://bit.ly/GrupOpiniDMI (WhatsApp)

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

Immediately Register Yourself in the OPINI DMI Webinar

The OPINI DMI webinar can be considered a mandatory event for anyone who has a high interest in shrimp farming. Good for students, farmers, and ordinary people who are just getting to know the world of aquaculture.

Through this webinar, you will gain a lot of new knowledge and connections and the opportunity to have direct discussions with professionals who are experts in the field of shrimp diseases.

So please mark your calendars for Saturday, March 11, 2023, and join us for this informative and inspiring event. Register yourself now at https://bit.ly/Daftar-OPINI-DMI-1!

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14Feb
Fun ReadTips

This is the Difference between Male and Female Shrimp

Farmers need to know the differences between male and female shrimp before hatching. This aims to ensure that the spawned parent shrimp have different sexes with the correct amount ratio.

However, determining the difference between male and female shrimp is sometimes tricky because the two look very similar at first glance. However, some traits can be observed to find the difference.

What are these characteristics? Here we have summarized it for you in this article. So, make sure to read it all the way through.

Also Read: The Organ System and Morphology of Vannamei Shrimp that You Should Know

The Difference between Male and Female Shrimp

The difference between male and female shrimp can be identified from their genitals. In male shrimp, the genitals are in the form of petasma, located on the first swimming leg, which transfers sperm.

Meanwhile, the female shrimp’s genitals are known as thelycum, which is located between the fourth and fifth leg of the road and functions to store sperm.

The female reproductive system uses a pair of ovaries, oviducts, genital openings, and thelycum. While the male reproductive system uses the testes, vasa deferensia, petasma, and masculine appendix.

In addition, the difference between male and female shrimp can also be seen in their body size. The female shrimp parent usually has a larger size than the male parent.

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

Criteria for Ideal Shrimp Brood

The ideal female shrimp parent is a parent that has mature eggs. The maturity of the eggs is measured based on the development of the ovaries, which are located on the dorsal side of the shrimp’s body. The ovaries are green the more mature they are, the darker the color.

While the development of perfect petasma determines male shrimp. Usually, this petasma contains a spermatophore.

From the physical condition, the shrimp chosen as broodstock must have at least a minimum weight of 100 grams for females and 80 grams for males. Also, ensure the parents do not have defects or injuries, especially on the reproductive organs, to produce high-quality shrimp seeds.

To determine whether the eggs in the parent have matured, it is usually done in two ways: lifting the female and facing the lower body (ventral) towards the sun. In addition, you can also use a waterproof light beam to observe it.

Also Read: Getting to Know the DOC Term in Shrimp Farming

Choose DELOS as Your Shrimp Cultivation Partner!

That is the difference between male and female shrimp that farmers should know before spawning. This is because it is important to ensure that the parent shrimp spawned have the same number of different sexes.

DELOS can be the right cultivation companion for your shrimp pond for those who want to know more about vannamei shrimp farming management, including the primary spawning process.

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 pond management is also integrated with AquaHero, making it easy for farm owners and farm personnel to monitor real-time shrimp pond conditions through gadgets daily.

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 partner!

_______________________________

Source: Pratiwi, Rianta. 2018. Aspek Biologi dan Ablasi Mata Pada Udang Windu penaeus monodon Suku Penaeidae (Deapoda: Malcostraca). Oseana. 43(2): 34-47

Setiawan, Arief, dkk.,. 2004. Pemilihan dan Pemeliharaan Induk Udang. Departemen Pendidikan Nasional

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09Feb
AquacultureTips

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

The threat of nitrite in shrimp ponds is an impact on the environment from intensive vannamei shrimp cultivation that all shrimp farmers can face. Therefore, farmers must find out ways to prevent and overcome them immediately.

Vannamei shrimp has long been a species of shrimp cultivated in Indonesia. This is because this type of shrimp is a food that is very popular with people around the world, so its export value continues to increase from year to year.

However, the intensive cultivation of vannamei shrimp can cause various impacts on the environment, one of which is the threat of nitrites. So, how to overcome it? Read more in this article!

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

What is Nitrite in Shrimp Ponds?

Nitrite in shrimp ponds is a toxic substance produced from nitrogen which is only partially oxidized. This substance is not found in fresh wastewater but in wastewater that has long been settling and accumulating.

High nitrite levels can result from overfeeding of shrimp, excessive sediment density, poor water circulation, and other factors that upset the balance of the nitrogen cycle.

Nitrite is very toxic to vannamei shrimp. Its presence can cause various adverse effects, including stunted growth and development of shrimp or even death.

Nitrite is not fixed and can turn into ammonia or be oxidized to nitrate at any time. When compared with nitrate, the presence of nitrite in the waters is less. However, the level of toxicity for vannamei shrimp is very high.

The danger of nitrite toxicity in vannamei shrimp ponds is especially evident in the early stages of the cultivation cycle. During this initial stage, nitrite levels can rise rapidly and reach dangerously toxic levels.

The presence of oxygen in shrimp ponds affects the presence of nitrites in shrimp ponds. In general, waters that get an adequate supply of oxygen have lower levels of nitrite concentration when compared to waters that do not get an oxygen supply.

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

How to Overcome Nitrite Threats in Shrimp Ponds

Even though it has a high level of toxicity, it does not mean that the nitrite threat cannot be overcome. One of the most important steps must be taken is monitoring water quality regularly and keeping other parameters optimal.

This can be done by adjusting the feeding, increasing oxygen circulation, and adjusting the stocking density of vannamei shrimp to prevent overcrowding.

How to deal with the threat of nitrite in shrimp ponds can also be done by adding nitrite-reducing bacteria into the pond. These bacteria can consume nitrites and convert them into less harmful substances, such as nitrogen gas.

Not only that, the presence of bacteria known as Nitrobacter can also help improve water quality along with reduced nitrite levels, making it safe for the growth of cultivated vannamei shrimp.

In addition, it is also essential to keep the pond well-aerated, especially in the early stages of the culture cycle. Adequate aeration helps ensure dissolved oxygen levels remain high, reducing the risk of nitrite toxicity and other water quality problems.

Also Read: Get to Know Vibrio Bacteria in Vaname Shrimp As the Cause of Various Diseases

Vannamei Shrimp Cultivation More Productive with DELOS!

The threat of nitrites to vannamei shrimp can occur at any time if the pond does not have adequate waste circulation. Therefore, practicing good pond management and sanitation is essential, including removing organic waste regularly and maintaining pond aeration.

By taking these steps, you can help reduce the risk of nitrite toxicity and keep the vannamei shrimp pond environment you have healthy.

For those who need assistance with vannamei shrimp cultivation to get maximum results. DELOS is the correct answer 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 integrated with AquaHero, which makes it easy for farm owners and farm personnel to monitor the condition of their shrimp ponds through gadgets every day in real time.

Contact the DELOS Team via contact@delosaqua.com or submit via our website contact column at www.delosaqua.com to join our ecosystem. Choose DELOS for your shrimp farming assistance!

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07Feb
Aquaculture

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

During cultivation, the growth of vannamei shrimp must constantly be monitored, including vannamei shrimp DOC 20. This is because this type of shrimp has a faster growth rate when compared to other kinds of shrimp.

For farmers, understanding growth patterns during vannamei shrimp cultivation are very important for successful cultivation. This is because the growth of vannamei shrimp also affects the feeding given to the shrimp.

So how is the growth of vannamei shrimp DOC 20, and how is the feeding? The following is an explanation we have summarized especially for you, which can be used as a reference.

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

Vannamei Shrimp Growth DOC 20

Vannamei shrimp DOC 20, which is still at the beginning of cultivation, has an ideal growth rate of 1-2.5 grams per week. At the same time, the ideal weight is approximately 2 grams per head.

This ideal growth can be obtained if the number of shrimp populations in the pond is by its capacity. On the other hand, if the pond has excess capacity, the growth of the vannamei shrimp in it can be lower than the ideal growth average.

So, how do you cultivate vannamei shrimp DOC 20 or, more precisely during the early stages of cultivation? Like aquaculture in general, farmers must continue to control shrimp and pond water conditions every day. This is useful for detecting more quickly if anomalies in shrimp growth and water conditions can harm aquaculture.

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

Vannamei Shrimp DOC 20 Cultivation

Vannamei shrimp cultivation always uses the age or day of culture (DOC) of shrimp as a benchmark in carrying out various actions related to pond management, one of which is how to feed it.

Feeding based on the age of the shrimp is helpful to prevent shortages or excess feed during cultivation which can inhibit the growth of vannamei shrimp.

Meanwhile, how to feed shrimp aged 20 days can be done by blind feeding method. While the type of feed given is in the form of granules with a frequency of 4 times a day and a feed dose of 25-15%.

This type of granule feed is suitable for shrimp from the age of 16 days to 45 days. Meanwhile, granules can be replaced with pellets until the vannamei shrimp are ready to harvest.

Also Read: 4 Types of Vannamei Shrimp Farms You Have to Know

Vannamei Shrimp Cultivation Makes More Profits with DELOS

Farmers must continue monitoring growth and water conditions in ponds during cultivation. This also includes vannamei shrimp aged 20 days or, to be precise, when the cultivation was started.

DELOS is the right choice for those who need assistance in vannamei shrimp farming to get maximum results. 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 also interacts with the AquaHero application, making it easy for farm owners and farm personnel to monitor the condition of shrimp ponds through gadgets every day.

Want to get affordable prices for pond products? AquaLink can be the best solution for you. Through AquaLink, we can connect you with producers and farm owners to obtain and sell pond products at the best prices.

Immediately contact the DELOS Team via contact@delosaqua.com or submit via our website contact column at www.delosaqua.com to join our ecosystem. Choose DELOS for your shrimp farming assistance!

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31Jan
Disease

Get to Know Vibrio Bacteria in Vaname Shrimp As the Cause of Various Diseases

The attack of vibrio bacteria in vannamei shrimp is one of the obstacles that you might face when carrying out vannamei shrimp farming activities. Vibriosis is a disease caused by the bacterium Vibrio sp. and can cause death up to 100% in the larval or juvenile stages.

Several types of vibrio bacteria often found in shrimp ponds include Vibrio harveyi, Vibrio parahaemolyticus, Vibrio alginoslyticus, Vibrio anguillarum, Vibrio vulnificus, and Vibrio splendidus.

Therefore farmers need to detect the presence of this bacteria as early as possible. This is done to minimize the risks that the farmers may face.

Also Read: What is Covert Mortality Nodavirus (CMNV) which Can Attack Vannamei Shrimp?

What is Vibrio in Vannamei Shrimp?

Vibriosis is a disease caused by an attack of vibrio bacteria in vannamei shrimp. In addition to vibriosis, the bacterium Vibrio sp. can also cause Acute Hepatopancreatic Necrosis Disease (AHPND) and White Feces Disease (WFD).

Several types of vibrio bacteria often found in shrimp ponds include Vibrio harveyi, Vibrio parahaemolyticus, Vibrio alginoslyticus, Vibrio anguillarum, Vibrio vulnificus, and Vibrio splendidus.

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

Contamination and Spread of Vibrio Bacteria in Vannamei Shrimp Ponds

As one of the fisheries commodities whose production continues to increase yearly, vannamei shrimp are economically able to contribute up to 33.1% in export value.

What’s more, with an intensive cultivation system, the productivity of shrimp ponds can experience a significant increase. But on the other hand, intensive cultivation systems can cause a decrease in water quality which can cause disease attacks, one of which is vibriosis.

The presence of Vibrio sp bacteria in waters is usually affected by poor physical and chemical parameters. Starting from the high pond water temperature, there is too much organic waste sediment deposition to the water salinity that is too high.

However, the contamination and development of vibrio bacteria in vannamei shrimp can be reduced in several ways, such as by using chemicals according to standards to kill bacteria.

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

Sustainable Vannamei Shrimp Cultivation with DELOS!

When carrying out aquaculture cultivation, it is essential to realize that bacteria are everywhere, including Vibrio bacteria in vannamei shrimp. Because basically, there are types of bacteria that are important for ecological stability and ecosystem sustainability.

However, some bacteria have a negative impact where their presence can trigger stress on the shrimp to diseases that cause mass death. Therefore, farmers need to manage their shrimp ponds properly and sustainably.

If you want to realize proper and sustainable pond management, DELOS can be your right partner choice. DELOS is the best science, technology, and operational management-based aqua-tech company that can help you explore new opportunities in the aquaculture field.

To start partnering with DELOS, contact contact@delosaqua.com or submit via the contact column on our website www.delosaqua.com. Trust your shrimp pond management to DELOS!

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