1. Prepare a basin, put the lobster in it, then drop a few drops of cooking oil and ad
1. Prepare a basin, put the lobster in it, then drop a few drops of cooking oil and add a little salt. 2. Prepare a net bag, then put the lobster in and spread it out. You can also add the right amount of water to keep it moist. 3. Prepare a large basin, put the crayfish in it, and then pour in an appropriate amount of water, the amount of water should not exceed the head of the crayfish.
1. How to feed crayfish for a long time?
1. Prepare a pot, put the lobster in it, then drop a few drops of cooking oil and add a little salt, which can generally survive for about 2-3 days.
2. Prepare a net bag, then put the lobster in and spread it out. You can add a proper amount of water to keep it moist, and don't drown the shrimp in the water (too much water can easily lead to crayfish dying of lack of oxygen).
3. Prepare a large basin, put the crayfish in it, and then put a proper amount of water, which is about 2-4cm above the crayfish head. At the same time, cover the basin with black plastic bags and feed crayfish with small fish and cabbage leaves regularly.
4. Put the lobster in a pool with an air pump or a glass jar, and change the water in the morning and evening. Generally, it can survive for about 5- 10 days.
Second, the technology and management process of crayfish culture
1, pond
(1) The water depth of the pond shall be controlled between 1- 1.5m, the bottom of the pond shall be flat, and the periphery of the pond shall be compacted to prevent the lobster from escaping, and the slope ratio of the pond shall be 1: 2.5.
(2) Before stocking, each acre of pond was cleaned and disinfected with quicklime 100- 150kg. Three days later, the pond was flooded. After 10, 300-500 kg of decomposed organic fertilizer is applied to each mu of pond to cultivate plankton and provide bait for shrimp seedlings.
2. stockings
(1) stocking density: stocking in summer, with 30,000-40,000 young shrimps per mu of pond, with specifications above 0.8cm; If it is stocked in autumn, it will stock10.5 million shrimp fry per mu of pond, and the specification is above 2.5cm; In case of stocking in winter and spring, the pond should be stocked with 1.5-20000 shrimps per mu, with the specification of 100-200 shrimps/kg.
(2) Stocking time: if it is summer stocking, it is usually carried out in the middle and late July of each year; If it is stocked in autumn, it is usually carried out from mid-August to September every year; In case of stocking in winter and spring, it is generally carried out in 65438+February every year or March-April of the following year.
(3) Precautions for stocking: Before stocking, soak in water with 4% salt for about 10 minute.
Step 3: Feed.
(1) Feeding amount: The feeding amount from July to June is about 8- 12% of the weight of shrimp, and the whole dry feed or compound feed is 2-4%. In other seasons, the daily feeding amount is about 2-5% of the shrimp weight.
(2) Feeding time: If it is July -65438+ 10, feed twice a day, and the feeding amount at night is about 60-70%; If it is in other seasons, feed it 1 time every day, and the specific feeding time is around sunset every day.
Step 4 manage
(1) Water conditions: the dissolved oxygen content should be kept above 5mg/L, the ph value of water should be controlled between 7 and 8.5, and the transparency of water should be about 40cm.
(2) Disinfection and water exchange: change water once every 15-20 days, and once every 5-7 days if it is in high temperature season, and the water exchange rate is about 20-30% each time, and each acre of pond is used every 10-65438 15 days.