1) Basic facilities of the nursery farm The building structure of the nursery room must meet the requirements of lighting, heat preservation, and ventilation. The room should be provided with a light curtain or a white paint on the glass to regulate the light intensity. In addition, the basic facilities for a complete nursery include food culture ponds, spawning hatcheries, larval rearing ponds, outdoor prawn cultivation ponds, and power supply, water supply, and heating systems.
In order to improve the survival rate and economic benefits of nursery, the water for nursery, nursery ponds, nursery equipment and other facilities must be strictly disinfected.
2) Broodstock harvesting and wintering Breeding Broodstock breeding usually uses two sources: the first is to catch mature broodstock from the shrimp spawning ground, and the second is to raise the broodstock. The broodstock should be selectively full-filled, robust, disease-free, and several individuals whose ovaries are yellow-brown or brownish green. They can be transported using live water and inflatable canvas buckets and are to be raised for production.
The broodstock should be moved into the house during winter in our city, and the temperature should be maintained at 9-10°C, and should be properly mixed with 1/4?/3 males. The appropriate stocking density should be 3-5/m2. Good can be put to 10-20 tail/m2.
Process Precipitation Net Filter Broiler Cultivation Pond Algae Expansion Culture Pond Rotifer Cultivation Pond Artemia Winter Egg Hatchery Pool │ │ ↓ â”—â”â”â”â”â”â”â”›
│ │ Unicellular algae cultivation pool
│ │ │ â”â”â”â”â”â”â”┓
↓ ↓ ↓ ↓ ↓ ↓
Inflation of water injection temperature control → spawning, hatching → nauplii → grazing larvae → prawn → prawn → saplings out of the counting bait prawn nauplii do not feed, rely on the yolk to raise themselves, enter the zoea and start eating tiny Dynamic value, to increase the ability to feed during the shrimp season, after the prawn period can eat artificial diet such as oyster meat.
Commonly used bait:
1) Skeletonema algae, Chaetoceros japonicus, Nitzschia closterium, Phaeodactylum tricornutum.
2) Brachionus rotifer, Artemia, bivalve eggs and larvae.
3) Soybean milk, tofu and soy flour; egg yolk, cake; shrimp powder, artificial ingredients.
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