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close this bookWorkshop to Produce an Information Kit on Farmer-proven. Integrated Agriculture-aquaculture Technologies (IIRR, 1992, 119 p.)
View the document(introduction...)
View the documentIntroduction
View the documentWorkshop of participants
View the documentBibliography on integrated farming
close this folderEconomic, sociocultural and environmental considerations in introducing integrated agriculture-aquaculture technology
View the documentSociocultural considerations when introducing a new integrated agriculture - aquaculture technology
View the documentEconomic considerations in introducing integrated agriculture-aquaculture technologies
View the documentWorking with new entrants to integrated agriculture -aquaculture
View the documentIntegrated agriculture-aquaculture and the environment
close this folderIntegrated farming systems
View the documentIntegrated grass-fish farming systems in China
View the documentChinese embankment fish culture
View the documentThe V.A.C. system in northern Vietnam
View the documentFodder-fish integration practice in Malaysia
View the documentIndian integrated fish-horticulture vegetable farming
View the documentCulture of short-cycle species in seasonal ponds and ditches of Bangladesh
close this folderAnimal-fish system
View the document(introduction...)
View the documentIntegrated fish-duck farming
View the documentIntegrated poultry-fish farming
View the documentIntegrated fish-pig farming (1000 sq meter unit: India)
View the documentBackyard integrated pig-fish culture (100-150 sq m unit: philippines)
close this folderRice-fish systems
View the document(introduction...)
View the documentLow-input rice-fish farming system in irrigated areas in Malaysia
View the documentRice-fish systems in Indonesia
View the documentSawah Tambak rice-fish system in Indonesia
View the documentRice-fish systems in China
View the documentRice-fish system in Guimba, Hueva Ecija, Philippines
View the documentThe case of rice-fish farmer mang isko,dasmarinas, cavite, the Philippines
close this folderManagement for rice-fish
View the document(introduction...)
View the documentSite selection: where to culture fish with rice'
View the documentPreparation of field for Rich - fish culture
View the documentStocking for rice-fish culture
View the documentFeeding and maintenance in rice-fish system
View the documentRice management in rice-fish culture
View the documentRice-fish benefits and problems
View the documentThe rice-fish ecosystem
View the documentFish as a component of integrated pest management (ipm) in rice production
close this folderFish management and feeding
View the documentUsing animal wastes in fish ponds
View the documentSewage-fed fish
View the documentBiogas slurry in fish culture
View the documentPlant sources of feed for fish
close this folderFish breeding and nursing
View the document(introduction...)
View the documentCarp breeding using off- season wheat fields
View the documentNursery system for carp species
View the documentFry nursing in rice-fish systems
View the documentFingerling production in irrigated paddy

Nursery system for carp species

A nursery is a facility where fish seed (hatchlings/fry) can grow. Efficient fish pond culture requires special preparation of nurseries for receiving spawn and hatchlings. The ideal size of a nursery is 0.02 0.02. ha with a depth of 1.0 - 1.5 m.


Remove all aquatic weeds (Day 1).

Drain or poison the pondwith Plscide-Phostoxin or Cellphos @ 1
tablet/210 cu ft water (Day 2).

Apply 5-6 kg lime which helps to release food nutrients available and to kill pathogenic organisms in the pond (Day 16).

· Refill water if necessary and fertilize (Day 19).

Apply fertilizer 3 days after lime application and 7-10 days before stocking.

· The most basic and reliable test involves filtering approximately 50 1 of water through a fine mesh into a 2.5 cm diameter specimen tube.

· Alternatively, a very simple field test in non-muddy water is to dip one's hand in the water to the elbow. If the hand is no longer visible, the plankton is probably sufficient.


Apply 80-100 g Dipterex at least 20-24 hours before stocking to kill the back swimmers or other aquatic insects in the pond (Day 29).

· Stock 60,000-70,000 hatchlings of 4-5 days old (200-250 9). The hatchlings should be of same age, uniform size, vigorous and released either in the morning or late afternoon (Day



Common carp


Silver carp


Rohu Mrigal

April - July


May - July

Grass carp

May- August

Silver Barb

March - May

Stocking Procedures

Before the hatchlings/fry are introduced to a new environment, it is important that the temperature inside the plastic bag is approximately the same as the pond water.

Place the bags, unopened, in the pond for 10-15 minutes. Open slowly and introduce small quantities of pond water to equalize the temperature. The fry is now allowed to swim into the pond.


· It is often difficult to maintain a high level of natural food for growing fry and supplementary feeds become necessary (Day 31). A mixture of finely powdered oil cake (soya beans, mustard, etc.), rice or wheat bran and fish meal in the ratio of 5:4:1 is to be supplied to try daily.



· Check the pond daily and see if there is an excess of green algae then; stop, application of supplementary feeds. Remove frogs/snakes, if any, in the pond. Increase feed by 10% of the rate mentioned above if the growth of the fish is not found steady and good.


· Harvest the try/fingerlinggs (Day 60) by using fry catching net, either in the morning or late afternoon and keep them in the enclosure (hapa) or cistern at least 3-4 hours before transportation (Day 60). Transport the fry/fingerlings in oxygenated plastic begs.

Before transporting, it is important that fingerlings are conditioned. The principle behind this is that they have time to empty their alimentary canal before being packed in high densities, so that the pollution of the carrying waters through excrete is reduced. Clean water from tube well should be used for conditioning the fingerlings.

Traditionally, young fish are transported in clay or aluminum pots. Recently, the use of plastic bags in compressed oxygen is becoming more widespread, as this allows the fish to be transported in higher densities and longer distances with substantially less mortality. Approximately, 5 1 of water

Harvesting and transportation

Density of fish (30 mm size) during transportation:


Number per Liter



Big head




Silver carp


Taka budget of 0.02 ha nursery pond preparation for fingerling production.



Draining/refilling or poisoning of pond


Lime 5 kg


Cattle dung 200 kg


1.75 kg Urea and 2 kg triple superphosphate


Dipterex 0.2 kg


60,000 carp hatchlings


Supplementary feeds: 20 kg mustard oil cake + 10 kg rice


Netting, labor and others


Total cost

Tk 1480

Income from sale of 30,000 (3.5 - 4.5 cm) fry/fingerlings

Tk 3000


Tk 1520

US$1.00 = TK 38

Prepared by: MD. GOLAM AZAM KHAN