Green shrimp pond breeding method

First, pond selection: Choose a pond area of 2 to 5 acres with a flat bottom, minimal silt, and water depth between 1 to 1.2 meters. The water source should be clean and free from pollution to ensure optimal conditions for shrimp breeding. Second, pre-filling preparation: About 10 days before stocking the broodstock, apply lime at a rate of 75–100 kg per acre to disinfect the pond. After 2–3 days, fill the pond to a depth of 60–80 cm. It's essential to use an 80-mesh filter when filling the water to prevent unwanted organisms from entering. Third, selecting broodstock: Choose healthy shrimp that are at least 5 cm in size, with strong bodies and no signs of disease. These shrimp should have a large surface area for holding eggs, ensuring higher hatching success. Fourth, hatching methods: There are two common approaches for hatching shrimp eggs. One method involves placing the egg-bearing shrimp directly into the main pond. The other is using a small net cage (2m x 1m x 1m) inside the nursery pond for controlled hatching. The cages should be fine enough to prevent the broodstock from escaping, and they should contain some aquatic plants or poplar roots to provide shelter. Each cage can hold about 2–3 kg of eggs, and approximately 10 kg of eggs are needed per acre. It's important to keep the egg color as consistent as possible within the same pond to ensure uniform hatching of larvae. During the hatching period, feed the broodstock twice daily with pelleted food, crushed snail meat, soybean meal, or similar feeds. The daily feeding amount should be 3–5% of their body weight, and it can be adjusted based on their condition and behavior. When the eggs begin to turn black and show dark spots, it indicates that the shrimp are about to hatch. At this stage, the females may become aggressive, sometimes even eating smaller shrimp or eggs. Fifth, feeding and management: Once the larvae hatch after 3 days and absorb the yolk sac, start feeding them with soy milk at a rate of 0.5–1 kg per acre, distributed in the morning and afternoon. As the shrimp grow, gradually increase the amount of food and introduce soybean meal, wheat flour, fish meal, or fish paste. The entire hatching process usually takes 25–30 days, during which the larvae go through about nine metamorphic stages. A single egg-carrying shrimp can produce around 100,000 seedlings. Throughout the rearing period, maintain good water quality by managing fertilization and keeping the water transparency at about 30 cm to promote healthy growth. In the later stages, add water weekly to raise the level by 15 cm. Daily removal of frog eggs is also crucial, as they can reduce shrimp yield and waste feed. When harvesting the shrimp seedlings, avoid windy weather to prevent them from getting stuck in the nets. Additionally, when stocking shrimp, ensure the water temperature difference does not exceed 3°C, as sudden changes can lead to high mortality rates.

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