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-