Prepare certain parts per million (ppm) concentrations in water for disease treatment in fish pond culture.

Suppose an Aqua consultant told you to prepare 2 ppm Potash solution for disease treatment in your culture pond. On that time what amount potash ( gm) you will use to prepare 2 ppm solution in your culture pond.

Firstly,

Calculate your pond area (Length and width) and water depth, multiply it by 2 ( so that potash is 2 ppm) . Find out result definitely will gm.

Hydrogen Sulfide (H2S) gas source, management and harmful effect of Hydrogen Sulfide (H2S) on Fish pond

Up to one third of the content of feed used in culture system may be indigestible. And 25% of the feed become wasted if sinking feed is used. That’s why massive gas problem specially Hydrogen Sulfide (H2S) gas occur at the middle of the culture stage. If we do not solve it fish suffer huge suffocation problem and mortality occur. We can easily understand by following diagram.

Shrimp / fish catching

Aeration with pond capacity, Importance of Aeration and Total oxygen budget in pond

Aeration:

Aeration is the process of adding oxygen to water and maintaining healthy levels of dissolved oxygen (DO) which is the most important parameters of water quality. Because aerobic type of respiration of living organisms only possible by DO.

Aerator

This process will help you to create a perfect production of fish, caring of fish and 

finnaly a good output from you feed. 

Ammonia source, Ammonia management and harmful effect of ammonia on Fish pond

Ammonia 

Ammonia in water basically stayed in two form unionized Ammonia (NH₃) and Ammonium ion (NH₄ ). Unionized ammonia is very much lethal and predominated when P^H is high. In pond environment P^H  up and down due to photosynthesis and respiration by pond organisms. Waste nutrients concentration from feed and feases promote dense phutoplankton. During day time in the presence of sunlight phytoplankton produce their own food by photosynthesis process. Day time CO2 is being low and due to rapid photosynthesis , removal of Carbon dioxide ( CO₂) converted to carbonate ( CO₃) and bi carbonate (H₂CO₃) and pH become high but at night time when CO2 is high it converted to carbonic acid ( H₂CO₃) and  pH become low. So there is a relation between pH and plankton.

When ammonia rise in pond, fish can not extract energy from feed effectively. Ultimately fish going to comma and result in death.

Different fish species in Bangladesh - Marine Fish Species of Bay of Bangol

Different fish species in Bangladesh - Part 3

 Naturally Bangladesh belong to Bay of Bengal which is rich in biological resources. If anybody see the map of Bangladesh they can easily understand why Bangladesh are paramount for capture and culture fisheries. We have billion of ponds, haor, baor,Bill, cannel , river. So we have huge opportunity for fish culture. Here I tried to include some renound fish which are available in Bay of Bengal.
   

Scientific name:Cynoglosus cynoglosus.         

Different fish species in Bangladesh - Marine Fish Species of Bay of Bangol

Different fish species in Bangladesh part 2 

 Naturally Bangladesh belong to Bay of Bengal which is rich in biological resources. If anybody see the map of Bangladesh they can easily understand why Bangladesh are paramount for capture and culture fisheries. We have billion of ponds, haor, baor,Bill, cannel , river. So we have huge opportunity for fish culture. Here I tried to include some renound fish which are available in Bay of Bengal.

Different fish species in Bangladesh - Marine Fish Species of Bay of Bangol

Different fish species in Bangladesh - Marine Fish Species of Bay of Bengol : Part 1

Local name: Powa fish

Mugil cephalus

NUMBER OF GEAR/ FISHING EQUIPMENT USED IN BANGLADESH

NUMBER OF GEAR/ FISHING EQUIPMENT USED IN BANGLADESH (Part-1 ) :

There are different types of gear/fishing materials used in Bangladesh. Out of them some are Net and some are traps. Only nine net and six traps are used but net/jal are most preferable fishing device.

Different Banned products which are used in fish and shrim farm and Hatcheryp aquaculture

Different Banned products which are being used in fish and shrimp aquaculture :

An attempt was made to identify the source of hazardous antibiotics, nitrofuran and chloramphenicol. Several focus group discussions were conducted in Cox’s Bazar with different stakeholders of the value chin as participants. Although it was difficult to identify the exact source of contamination of nitrofuran in shrimp, three most suspected source could be hatchery developed PL, Indian PL found in black market and 8-12 types of feeds available for shrimp husbandry (4-5 are of Indian origin).

Different company product used for shirmp culture and hatchery management

Different company product used for shirmp culture and hatchery management :

In the present study of chemicals and antibiotics used in coastal aquaculture in Cox’s Bazar region have been investigated. The name of such compounds with the purpose of use, application methods and dose is listed in Table1. Many of such compounds are also common in freshwater aquaculture.

Telapia, Shrimp / Prawn, Pangus and Koi feed based culture Technique Video with fish catching, fish feeding

Telapia, Shrimp / Prawn, Pangus and Koi feed based culture farm Video with fish catching vedio, fish feeding vedio:

Click Here To See This Video

Different company product for fish, fish product analysis and overview of different aquaculture product uses

Different company product for fish, fish product analysis and overview of different aquaculture product uses :

A number of traditional as well as commercial products were used during pond preparation and for improving water quality of fish pond. The list of such branded products are used to reduce Toxic gases (like ammonia) and harmful pathogens trapped in the pores of such compound. They also absorb noxious toxic substance and off odor of water, and these ensure clear and healthy pond environment.

Crab/ Mud crab (Scylla serrata) culture technique Or Mud Crab Scylla serrata fattening in Pond : Part 02

Crab/ Mud crab (Scylla serrata) culture technique Or Mud Crab Scylla serrata fattening in Pond : Part 02

Suitable Physico-chemical parameters in earthen pond:

Salinity, water temperature, water pH, soil pH and dissolved oxygen (DO) were recorded as 2-8‰ and 3-8‰, 28-30°C and 22-25°C, 5.5-7 and 6-7, 6 and 6.2 and 8.85ml/L and 8.50ml/L in the first and second experiment respectively.

Crab/ Mud crab (Scylla serrata) culture technique Or Mud Crab Scylla serrata fattening in Pond Part 1

Crab/ Mud crab (Scylla serrata) culture technique Or Mud Crab Scylla serrata fattening in Pond : Part 01

 Introduction

Mud crab Scylla serrata (locally called “Jati or Haba Kakra”) is broadly distributed in the Bangladesh and one of the most renowned culture species, which has great economic value. We can culture it in earthen pond. Scylla serrata fattening in earthen pond basically attempted in the coastal area of Bangladesh. 

Earthen pond preparation:

Tidal water pond is highly suitable for mud crab fattening. Before construction of dike and switch gate first existing water should be drain out from the pond and remain for sun burn at least 1.5 weeks. 70-80 decimal / shotansho pond is highly suitable for mud crab culture. Total pond area was equally divided into four small ponds. All the ponds were fenced by bamboo slits at about 6² deep in the soil to prevent crab from escaping and burrowing (Fig. 1). CaCO₃ was applied at a rate of 100 kg/ha to increase the pH value.

Crab / Mud crab (Scylla serrata) culture technique Or Mud Crab Scylla serrata fattening in bamboo cage : Part 02

Crab / Mud crab (Scylla serrata) culture technique Or Mud Crab Scylla serrata fattening in bamboo cage : Part 02

Growth and mortality rate :

Growth rate (0.92 to 1.64 g/indiv./day for male and 0.61 to 1.06 g/indiv./day for female) and mortality rate (3-6% for both male and female crab) were observed in cages. Growth rate of male crabs was found higher than the female crabs in cages.

Crab / Mud crab (Scylla serrata) culture technique Or Mud Crab Scylla serrata fattening in bamboo cage : Part 01

Crab / Mud crab (Scylla serrata) culture technique Or Mud Crab Scylla serrata fattening in bamboo cage : Part 01

Introduction :

Mud crab Scylla serrata (locally called “Jati or Haba Kakra”) is widely distributed in the Bangladesh and one of the most famous culture species, which has great economic value. We can culture it in earthen pond, pen and even in cages. Mud crab fattening in cage is required and to be useful for high growth and low mortality. Unfortunately, crab fattening in cage is not widely practiced in Bangladesh because of lack of proper knowledge and publicity. There are 640 sps of crabs available in various aquatic environments; out of these crabs of Scylla sps are larger in size, fetches high price nd suitable for culture practices. The Scylla species popularly are known as the Mangrove crabs, the Mud crabs, the Green crabs and the Brown crabs. Crabs can be cultured in earthen dug out ponds, tanks and cages. There are two types of culture methods 1.Culture 2.Fattening. In culture method crab lets either brought from hatcheries or wild are stocked in and grown for 6-9 months. In fattening method grown up, 50-100 gm sized crabs are brought from wild and fattened in ponds, for 3-4 months. Here I will discuss overall technique of crab culture-

Welcome to Telapia, Shrimp, Pangus, Koi, Crab /Mud crab (Scylla serrata), Seagrass Culture Tecgnique

Welcome to Telapia, Shrimp, Pangus, Koi, Mud crab (Scylla serrata) and Seagrass Culture Technique :

In Our country every Aquaculturist and farmers want to know about how to do culture Telapia, Shrimp, Pangus and Koi. Here I will discuss details culture technique regarding above species. Basically I will focus Telapia ( part 01-03), Shrimp ( part 01-04) and Pangus ( part01-03) fish culture technique.

Apart from this I will also discuss different disease and cure technique of above species.

Some important equation/ law of fish or shrimp farm operation

Aquaculture is the art of fish culture. To do this culture perfectly some scientific equation is important. like stocking density, survival rate, feeding rate  and actual feed demand etc..Some important equation of fish or shrimp farm operation are given below.

The pond area is calculated by the following way

Here pond depth = 6 feet

Cost benefit analysis of a fish pond / Financial analysis of an aquaculture farm

Cost benefits analysis of a fish pond / financial analysis of an aquaculture farm:

Cost Benefit analysis is very important to determine a farmer is economically benefited or not. Because during the culture period farmer needs to input huge feed, medicine and other materials. Sometimes major mortality is occurred which ultimately result in huge economic loose. 

Different Shrimp Disease and cure technique Part 02

PART: 02

In present situation in Bangladesh, most of the shrimp farmers face several shrimp disease problem. But accept WSSB or MBV, those disease are easily curable. Here I will discuss ( part: 02) different shrimp disease and how to cure those disease.

  

Protozoan or Luminance problem:

Symptom of (protozoan) luminance sp:

Ø  Shrimp could be count at night due to illumination.

Treatment:

Ø  Tok Doi 8-10 kg/Acre. ( 1^st day)

Ø  Super biotic 1kg/Acre. (2^nd or 3^rd day)

Ø  BKC (Benzalkonium chloride- (1.5 – 2 ppm)) 4L/ Acre. They are active against bacteria and some viruses, fungi, and protozoa and Bacterial spores.

Ø  Formalin 25-40 ppm. Depending on size and quantity of parasite.

Different Shrimp Disease and cure technique Part 01

Introduction

Diseases constitute one of the most important problems and challenges confronting shrimp farmers today. In present situation in Bangladesh, most of the shrimp farmers face several shrimp disease problem. White Sport Syndrome Virus (WSSV) is the one of the main disease for the shrimp farming in Bangladesh. But there is a wrong idea among the farmer regarding virus (WSSV) disease. Many farmers if their farm shrimp died they think this is due to virus. But virus is not only the one of the cause of shrimp died. Shrimp, like all animals, are subject to a variety of diseases. But accept WSSB, those disease are easily curable. Here I will discuss (Part 01-02) different shrimp disease and how to cure those disease.

                                                                   PART: 01

Gas problem or Bottom Purification: 

Up to one third of the content of feed used in culture system may be indigestible. And 25% of the feed become wasted. That’s why massive gas problem occur at the middle of the culture stage. If we do not solve it fish faced huge suffocation problem and mortality occur. We can easily understand by following diagram.

Feed waste in different way

Shrimp Culture/ Production Technique Part: 04

 Shrimp Culture/ Production Technique Part: 04

Stocking

Acclimatization:

 It is done by mixing culture pond water with Fry’s container water gradually with fixed time interval to adjust temperature, salinity, P^H and others environmental parameter. In PL drums, aquarium aeration and larval feed should also be provided. If anybody want they can also measurea actual survival rate in Hapa.

Shrimp Culture/ Production Technique Part: 03

 Shrimp Culture/ Production Technique Part: 03

Part 03

Water management

·         Screening (3 layers, 60 mesh size) out water before fulfilling pond.

·         Spray crustracide (Ripcot) on the dike and slope to remove and kill the crustacean from the pond surrounding area.

·         Settle water in pond 3 days after complete pumping to hatch the egg (fish and crustacean) into the pond with aeration.

·         Set up all aerator and necessary material like catwalk, feeding tray,  fencing net etc in the pond before bleaching.

Catwalk and feeding tray

Shrimp Culture / Production Technique Part : 02

                                                              Part: 02

Pond preparation:

Pond preparation is one of the most important factor for successful aquaculture operation.It is said that , most of the fish disease occur only for not preparing pond in right way.Water quality highly depends on soil quality that's why pond soil should be in good position.

 

Soil sampling:

Step of pond preparation

Soil samples are collected from the pond bottom and the dikes for pH and organic matter contents analysis. Soil pH analysis is generally conducted to find out lime requirement. Soil samples are collected in a S or X -shaped pattern and only the top soil 0-15 cm is taken as sample to determine soil quality.

Shrimp Culture / Production Technique Part : 01

Shrimp Culture / Production Technique Part : 01

Site selection for pond

·         Good water retention capacity of pond

·         Clay, clay-loam, silty-clay-loam are preferable kinds of soil for fish pond site.

·         Water quality of the site is an important factor because fish growth depends on it. Survival and growth of fish highly depends on ambient water temperature. A water temperature between 28 °C- 32 °C is generally good for fish farming.

·         Good transportation system

Telapia Culture/ Production Technique Part: 03

Telapia Culture/ Production Technique  Part: 03 

Stocking

• Acclimatization : It is done by mixing culture pond water with Fry’s container water gradually with fixed time interval to adjust temperature, salinity, P^H and others environmental parameter. In PL drums, aquarium aeration and larval feed should also be provided.

·         Stocking time: Early morning and late evening. when the pond water  temperature is low.

• Stocking density: After having pond preparation stocking density should  be 5-6 per Square meter or 200-250/ shotangsho.

Telapia Culture/ Production Technique Part: 02

Pond preparation:

Soil sampling:

For pond bottom preparation, soil samples are collected from the pond bottom and the dikes for pH and organic matter content analysis. Soil pH analysis is generally conducted to determine lime requirement. Soil samples are collected in a S or X-shaped pattern and only the top soil 0-15 cm is taken as sample to determine soil quality.

Telapia Culture / Production Technique Part : 01

Part : 01

Site selection for pond

·      The proposed site should be free from trees, bush, rocks, and grasses and away from densely populated, industrial area.

·       The quality of soil (P^H   6.5-7.5) influences both water quality and productivity in a pond. The soil must also be suitable for dike construction. Avoiding sandy, muddy Black pirates, Pit forming and Acid sulphate soil. Sandy and muddy soils are not suitable for pond construction because of low water retention capacity.