Green shrimp pond breeding method
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Second, pre-filling preparation: in the broodstock before stocking about 10 days, per acre with lime 75-100 kg Quanchiposa, about 2-3 days after the water to 60-80 cm, when the water must use 80 mesh filter.
Third, the choice of broodstock: Requirements specifications 5 cm or more, a strong physique, disease-free and large water surface hold egg shrimp.
4. Incubation of shrimps and shrimps: There are two common types of shrimp hatching. One is to put the collected egg-holding shrimp directly into the pond for incubation; the other is to put the collected egg-holding shrimps in a small net in the nursery pond. Box hatching. The small cages are 2 meters long, 1 meter wide, and 1 meter deep. It is advisable that the nets do not escape broodstock, and some water grass or poplar roots must be placed in the cages. Generally, about 2-3 kilograms of eggs are kept in each box, and about 10 kilograms of eggs are needed for each acre. In the same pond, egg color should be consistent as much as possible so that the larvae are relatively tidy.
During hatching, the broodstock should be fed twice a day, usually with pellets or crushed snail meat, soybean meal, etc., and the daily feeding amount should be 3-5% of the body weight of the broodstock, which should be flexible.
When the eggs hold eggs, shrimp and eggs turn black and appear black spots, the fierce attack from the lips and lips. Eating shrimp.
Fifth, shrimp feeding and management: When hatchling larvae hatch 3 days after the absorption of yolk, it is necessary to start feeding, this time we must start spilling soy milk, the amount of 0.5-1 kg per acre, points in the morning and afternoon to paint the pool spill Later, with the growth of shrimp, feeding gradually increased, and gradually add soybean meal, wheat flour, fish meal or fish paste.
It usually takes about 25 to 30 days to hatch from the shrimp seedlings. It takes about 9 times for the larvae to complete metamorphosis. Generally, 1 kg of egg-holding shrimp can produce about 100,000 shrimp seedlings.
During the cultivation of shrimp, it is necessary to grasp the management of fertilizer and water, and the transparency of the pool water should be maintained at about 30 centimeters, so as to be fat, live, and cool. In the later period, add water once a week for 15 cm. In addition, the frog eggs must be removed in time every day, otherwise the shrimp seedlings will be reduced in yield, and it will also cause feed wastage.
When the shrimp seedlings are caught in the pond, windy weather should be avoided to prevent the shrimp seedlings from sticking to the net. In addition, when the shrimps are stocked, they should pay attention to the difference in water temperature, because when the shrimps are stocked, the water temperature difference exceeds 3°C, which can easily cause the death of shrimps.
