Basic knowledge of fresh Water Shrimp Culture practical techniques of Shrimp Culture

Freshwater shrimp is a kind of shrimp that we often eat in our daily life. freshwater shrimp is more and more popular among people in recent years, and there is often a phenomenon that supply exceeds demand. At present, there are a lot of people who breed freshwater shrimp, but some people may have some problems in the process of breeding because of technology and other reasons, so everyone must be more concerned about its culture technology.

Basic knowledge of freshwater shrimp culture

1. Distinguish the quality of water quality. It directly affects the healthy growth and development of shrimp. In the process of culture, the pH value of pond water is kept between 7.5 and 8.5, and the transparency is 30cm~40cm. New water should be added frequently, quicklime solution should be sprinkled regularly, water quality should be regulated, disease occurrence and shelling failure should be prevented.

2. Feed must be given reasonably. Shrimp in the case of hunger and lack of food, will kill each other, so feeding must be adequate. Lobster feed is animal and plant feed. Plant feed for wheat, water plants, rapeseed cake, etc., animal feed for miscellaneous fish, meat and animal viscera and so on. Usually, the feeding time, feeding amount and feeding method are determined according to the habit of lobster in the day and night and the density of shrimp in the pond. Otherwise, the cost of feed will be increased and the benefit of breeding will be reduced.

3. Advocate scientific fishing. In the process of shrimp culture, under the condition of suitable temperature and sufficient feed, young shrimp can grow to the commercial specification in 60 ~ 90 days. The seedlings were released in March and the rotation began around June. The catch was big and small. Because the catch is large and the small is left, the rotation can improve the recapture rate, sell a good price, and achieve the goal of high yield and high efficiency.

Practical techniques of raising Shrimp

1. Aquaculture facilities: the area of the shrimp pond is 4 mu, the depth is 1 mu, the depth is 1 mu, the bottom is flat, the bottom is good with loam, the water retention is good, the water level is easy to control, the water source is sufficient, and the water quality is pollution-free. At the same time, do a good job in the construction of escape prevention facilities.

2. Clear the pond for disinfection: drain the pond water 20-30 days before stocking, remove too much silt, renovate the pool ridge, use 75 kilograms of quicklime per mu or bleach powder, bleach powder and other drugs, thoroughly clear the pool for disinfection.

3. Adequate basic fertilizer: 500 kg of rotten livestock and poultry manure per mu was applied in light shrimp ponds to cultivate rotifer, Cladocera and copepod plankton to provide palatable bait for shrimp seedlings.

4. Planting good aquatic plants: aquatic plants such as verticillium verticillata, Elaeagnus angustifolia and so on are planted in the shrimp pond, accounting for 2% of the shrimp pond area. At the same time, net or bamboo tube and plastic tube are set up to provide habitat, molting and concealment.

5. feed selection: light shrimp is omnivorous, animal feed includes small fish chips, dried fish meal, snail clam meat and various animal offal, etc. Plant feed includes rapeseed cake, soybean meal, wheat bran, wheat, corn, pumpkin and all kinds of vegetables and upland grass.

6. feeding: prawns are mostly active and foraging at night, and they are fed once at 10: 00 a. M. and 4: 00 p. M. every day. The amount of feeding in the afternoon accounts for about 70% of the total amount of feeding in the day. The daily feeding amount can be increased or decreased appropriately according to the weather, water quality and shrimp activities.

7. Daily management: shrimp culture should patrol the pond every day and pay attention to the changes of water color and activities. If shrimp are found to come ashore or climb on water plants and refuse to enter the water, check whether the water is lack of oxygen or the water quality is deteriorating. Corresponding measures should be taken, such as increasing oxygen, changing water, and so on.

What kind of food do freshwater shrimp eat?

Freshwater shrimp is omnivorous, and the juvenile shrimp feeds on plankton. The main food of adult shrimp in natural waters is a variety of benthic small invertebrates, corpses of aquatic animals, fixed algae, a variety of filamentous algae, organic debris, plant fragments and so on. Farmed river shrimp can eat a variety of commercial feed, such as lees, bean curd dregs, bean cakes, silkworm pupae, clam meat, wheat flour, fish meal, rice, snails, especially maggot bows. When there is not enough feed, they will eat each other. Negative phototaxis to light, lurking in the shadows during the day, feeding and activities at night. Therefore, most of the feed is put into the dark.

Common diseases of freshwater shrimp and their control

1. Rotten tail disease. Prevention and control methods: do not pile up and damage the shrimp body when transporting and putting in the shrimp seedlings. Feed should be fed fully and evenly during the feeding period to prevent shrimps from competing for food or killing each other due to lack of feed. When this disease occurs, every cubic meter of water should be sprinkled with 15 grams of tea meal extract in the whole pool, or 5 kilograms of quicklime per 667 square meters of water surface, and sprinkled in the whole pool.

2. Black Gill disease. Prevention and control methods: keep the water clean, sufficient dissolved oxygen, and regulate the water quality with quicklime regularly. The diseased shrimp is washed 2 times with 3%-5% salt water for 3-5 minutes, or the whole pool is sprinkled with methylene blue 10 grams of dissolved water per cubic meter of water.

After reading some of the basic introductions about freshwater shrimp above, we must have known more about it. Freshwater shrimp in the culture must pay attention to food feeding, but also need timely disease control, only to do a good job of these, in order to ensure its survival rate.