CATDOLL : CATDOLL: Do you know how to scientifically breed shrimp to achieve high yield and high efficiency?

1. Clean and disinfect the pond.

According to the requirements of shrimp farming in spring and autumn, 250 kg/mu of quicklime is used to disinfect the pond before the end of January and the end of May each year. If the silt at the bottom of the pond is deep, the amount should be increased appropriately. During disinfection, the water level in the pond should be kept at a depth of 10 cm to improve the effect of pond cleaning.

2. Planting of aquatic plants.

About 7 days after cleaning the pond, aquatic plants such as Elodea and Hydrilla verticillata are planted. The planting area generally occupies 1/4 of the pond area, and the planting position is about 1 meter away from the shallow water slope of the pond.

3. Release shrimp fry.

The first batch of shrimp seedlings is released before the end of January. The shrimp seedlings are selected from the young shrimps that did not reach the market specifications at the end of the previous year. The size of each shrimp is about 3 cm, and the stocking amount is 10 kg per mu. The second batch of shrimp seedlings is released in early July, mainly the shrimp seedlings bred in the current year, the size of each shrimp seedling is about 2 cm, and the average number of shrimp seedlings released per mu is 80,000.

4. Feeding and fertilizing.

Generally, feed is given 1-2 times a day. The first batch of shrimps listed in spring starts to be fed at the end of March, once in the evening in April, and twice a day after May, once before 6 a.m., the feeding amount accounts for 30% of the total feeding amount for the whole day, and the other time is around 7 p.m., the feeding amount accounts for 70% of the total feeding amount for the whole day. The second batch of shrimps listed in autumn can be stopped from being fed during the period of low water temperature in early November, and the daily feeding amount of bait at other times should be controlled at 8%-10% of the total shrimp in the pond. Feeding should adhere to the principles of "four determinations" and "four observations". The bait is mainly composed of full-price compound feed of green shrimp, with a small amount of bean cake and wheat bran. Apply basal fertilizer to cultivate water quality before stocking, and keep the water quality fertile, active, tender and refreshing during the breeding process.

5. Breeding management and disease prevention and control.

Water quality control: Change water once every half month before April, once a week from May to June, once every 2-3 days in the hot season, and change 10-15 cm of water each time. Increase the amount of water change in rainy or hot days. At the same time, microporous aeration pipes are installed, and the machine is turned on regularly according to seasonal changes to keep the pool water with sufficient dissolved oxygen.

Disease control: The first shrimp farming period is in winter and spring, and shrimp diseases are rare. The second shrimp farming period is in summer and autumn, and the incidence rate is higher than the first. Disease control should focus on prevention: In July, August, and September, during hot weather, use quicklime to spray the entire pond once every 15 days, and use 15 kg/mu per meter of water depth each time. Spray chlorine dioxide throughout the pond every 20 days or so, and use 0.2 g/m3 each time.

It is necessary to choose a suitable place for breeding, pay attention to the selection of species, pay attention to water treatment, and feed appropriate bait.

The pond needs to be disinfected, the silt at the bottom needs to be treated, and some aquatic plants need to be grown appropriately, paying attention to the density of the breeding.

Pond cleaning and disinfection. According to the requirements of shrimp farming in spring and autumn, 250 kg/mu of quicklime should be used to fully disinfect the pond before the end of January and the end of May each year. If the silt at the bottom of the pond is deep, add an appropriate amount. During disinfection, keep the water level in the pond 10 cm deep to improve the effect of pond cleaning.