Mendapatkan 300.000 ekor larva nila dengan mudah. It’s conventional tilapia spawning system. It has been developing, 40 years ago. I am sure that it’s only in Indonesia, not with the other countries. This system first developed in Cisaat, one fisheries area in Sukabumi, 100 km south of Jakarta.
This system has indicated high yields. In a period (every two weeks) can produce 300.000 larvas, next you can harvest every two week with out drying pond until 12 month. Fact, many culturis be rich, and has went to pure place, Saudi Arabia. If you don’t beleave, come in please. I am always waiting for you.
Conventional tilapia spawning system don’t in the tank, but in natural pond, by 25 m in length, 20 m in wide, and 0,8 in high. Don’t general pond, but pond by the specially contruction. Because in the botton made a tank, near of outlet. Tank made by cement 4 m in length, 2 m in wide, and 1 m in deep. Tank is used as rester brood when harvest.
Like general tilapia pond, pond for this system have five principal part, inlet, outlet, bottom, cannal, and tank. Inlet in the front and outlet in the back. Cannal is made in the bottom, to line from inlet to outlet, 50 cm in length, and 10 cm in high. Cannal is used to catch larvas when harvest.
Ponds dryed in 7 days. During drying, the all of part improved. In order transpired, the all of dike surface closed by the bottom land, or mud. As the nest places, bottom surface flated. The cannal dug, in 50 cm wide, and 10 cm deep. The tank also improved, muds, and lands thrown away. It’s rester when harvesting. The pond watered in 50 cm in deeps.
The broods stocked in the morning, when the law temperature, 1 fish/m2 in density, with ratio males and females 1 : 3. So, for 400 m2 need 100 males, and 300 females, or for 500 m2 need 125 males, and 375 females. Everday, fed 3 percents artficial foods. Feeding in three time, 09.00 o’clock, 12.00 o’clock, and 15.00 o’clock. During spawning, water irrigate continiously in 0,5 liter/seconds.
Spawning process : The first day to third, broods adafted to the situation. The fourth to fifth, males makes nest in the bottom. In the sixth, males invite females to the nest. Spawning in the seventh. Female release eggs in the nest. In the time, male release sperms. Hatching in the nest. Females take the eggs and lays in the mouth. The eggs develop, and hatch in the mouth. In twelve, females nurse larvas in the water, and takes again to the mouth. Females nurse until larvas can swim in free.
Harvest in fourteenth. The pond dryed by open outlet an close inlet, but water irrgate a little. In the front of outlet lied a tray, so that larvas don’t out of pond. Water out slowly. Draying stoped in 10 cm in high. The broods will go to the tank, and rest there. In order broods well, the tank watered from other pond. Whereas, larvas will live in cannal and go to the inlet for looking for freshwater. Larvas catched in the front of outlet by scoopnet, and entered to pails, and then storage to hapa. Hapas placed in the other pond.
After harvesting, the spawning pond improved again. The dike closed by bottom land or mud. The bottom of pond flated, and cannal dug, 50 cm in wides, 10 cm in deeps. The pond dryed in the sun. In the evening, the pond watered again, 50 cm in deeps. Harvesting refeated on fourteenth days, and every fourteenth days for six months. After six months, broods rested, and taken care of in manuriting pond for one month. Spawning can be refeated again like that.
Handling larvas : In order refresh, larvas indirect handled, but it rested for one hour. Water has to irrigate to the hapa, to keep water quality. After that, larvas separated of rubbishs, dead fish, and other dirty by throw out water surface by the hand, larvas avoid to go to mid, and bottom. Muds also threw out of hapa so that the water clear.
If water has clear, larvas selected by a selector. In Indonesia, selector is named ayakan, a tool made by bamboo pieces, or alumunium, and 2 – 3 mm in messes. Selecting technic : Catch larvas by catcher, or scoopnet. Lay ayakan in the water surface in the other hapa. Enter larvas to ayakan. In a few minutes, littles fry will go out of ayakan, and bigs live there. Refeated that technic until finish.
For knowing totals number, larvas counted. Accounting is in volumetric system, by a small cup, 250 ml in volume. Account technic : Catch larvas by a scoopnet, rested a few seconds, so that water out of scoopnet. Enter it to the cup. Count the larvas. Refeated it until finish. The totals number of larvas can be known by multiple the totals number in a cup, with volume. A set of brood in a pond can be produce 200,000 – 300,000 larvas.
This system has indicated high yields. In a period (every two weeks) can produce 300.000 larvas, next you can harvest every two week with out drying pond until 12 month. Fact, many culturis be rich, and has went to pure place, Saudi Arabia. If you don’t beleave, come in please. I am always waiting for you.
Conventional tilapia spawning system don’t in the tank, but in natural pond, by 25 m in length, 20 m in wide, and 0,8 in high. Don’t general pond, but pond by the specially contruction. Because in the botton made a tank, near of outlet. Tank made by cement 4 m in length, 2 m in wide, and 1 m in deep. Tank is used as rester brood when harvest.
Like general tilapia pond, pond for this system have five principal part, inlet, outlet, bottom, cannal, and tank. Inlet in the front and outlet in the back. Cannal is made in the bottom, to line from inlet to outlet, 50 cm in length, and 10 cm in high. Cannal is used to catch larvas when harvest.
Ponds dryed in 7 days. During drying, the all of part improved. In order transpired, the all of dike surface closed by the bottom land, or mud. As the nest places, bottom surface flated. The cannal dug, in 50 cm wide, and 10 cm deep. The tank also improved, muds, and lands thrown away. It’s rester when harvesting. The pond watered in 50 cm in deeps.
The broods stocked in the morning, when the law temperature, 1 fish/m2 in density, with ratio males and females 1 : 3. So, for 400 m2 need 100 males, and 300 females, or for 500 m2 need 125 males, and 375 females. Everday, fed 3 percents artficial foods. Feeding in three time, 09.00 o’clock, 12.00 o’clock, and 15.00 o’clock. During spawning, water irrigate continiously in 0,5 liter/seconds.
Spawning process : The first day to third, broods adafted to the situation. The fourth to fifth, males makes nest in the bottom. In the sixth, males invite females to the nest. Spawning in the seventh. Female release eggs in the nest. In the time, male release sperms. Hatching in the nest. Females take the eggs and lays in the mouth. The eggs develop, and hatch in the mouth. In twelve, females nurse larvas in the water, and takes again to the mouth. Females nurse until larvas can swim in free.
Harvest in fourteenth. The pond dryed by open outlet an close inlet, but water irrgate a little. In the front of outlet lied a tray, so that larvas don’t out of pond. Water out slowly. Draying stoped in 10 cm in high. The broods will go to the tank, and rest there. In order broods well, the tank watered from other pond. Whereas, larvas will live in cannal and go to the inlet for looking for freshwater. Larvas catched in the front of outlet by scoopnet, and entered to pails, and then storage to hapa. Hapas placed in the other pond.
After harvesting, the spawning pond improved again. The dike closed by bottom land or mud. The bottom of pond flated, and cannal dug, 50 cm in wides, 10 cm in deeps. The pond dryed in the sun. In the evening, the pond watered again, 50 cm in deeps. Harvesting refeated on fourteenth days, and every fourteenth days for six months. After six months, broods rested, and taken care of in manuriting pond for one month. Spawning can be refeated again like that.
Handling larvas : In order refresh, larvas indirect handled, but it rested for one hour. Water has to irrigate to the hapa, to keep water quality. After that, larvas separated of rubbishs, dead fish, and other dirty by throw out water surface by the hand, larvas avoid to go to mid, and bottom. Muds also threw out of hapa so that the water clear.
If water has clear, larvas selected by a selector. In Indonesia, selector is named ayakan, a tool made by bamboo pieces, or alumunium, and 2 – 3 mm in messes. Selecting technic : Catch larvas by catcher, or scoopnet. Lay ayakan in the water surface in the other hapa. Enter larvas to ayakan. In a few minutes, littles fry will go out of ayakan, and bigs live there. Refeated that technic until finish.
For knowing totals number, larvas counted. Accounting is in volumetric system, by a small cup, 250 ml in volume. Account technic : Catch larvas by a scoopnet, rested a few seconds, so that water out of scoopnet. Enter it to the cup. Count the larvas. Refeated it until finish. The totals number of larvas can be known by multiple the totals number in a cup, with volume. A set of brood in a pond can be produce 200,000 – 300,000 larvas.
