CATDOLL : CATDOLL: Who can share the key points of freshwater shrimp farming technology?

Who can share the key points of freshwater shrimp farming technology?

Freshwater shrimp is a kind of freshwater shrimp. The nutritional value of freshwater shrimp is very high. Freshwater shrimp grows very fast and is larger than ordinary shrimp. Freshwater shrimp reproduces quickly and has strong vitality. Freshwater shrimp mainly lives in freshwater lakes in my country. Freshwater shrimp tastes very good and is rich in nutrition, so more and more people will buy freshwater shrimp in the future.

Freshwater shrimp farming technology

1. Pond conditions: sufficient water source, fresh water, no pollution, convenient water inlet and outlet, preferably 2000-3000 square meters, 1-1.5 meters deep. High-yield shrimp ponds should be equipped with aerators, and some submerged plants should be planted in the pond, generally not exceeding 1/4 of the pond area.

2. Pond disinfection: Common disinfectants include quicklime, bleaching powder, croton, etc. After the drugs disappear completely, shrimps can be raised. Water injection and fertilization: 0.5 meters of water is injected one week before stocking, and fertilizer is applied according to the fatness of the pond water to increase the palatable bait for young shrimps, namely plankton.

3. Shrimp fry stocking: In the south, fresh shrimp can be farmed twice a year, while in the north, it is generally farmed once a year. For those who farm once a year, the stocking time is May to June. 2-3 kg of shrimps with eggs, or 100,000 to 150,000 shrimp fry, are stocked in 667 square meters, and the yield can reach 100 kg.

4. Feeding: Shrimp are omnivorous animals with a wide range of diets, but they are also selective. They prefer bean cakes, peanut cakes, bran, and rice bran as plant feeds; they prefer earthworms, snails, small fish and shrimps, fish meal, flour, silkworm pupae, etc. as animal feeds.

Freshwater shrimp fry breeding technology

1. There must be water hyacinths on the water surface (accounting for 1/3), and it is best to have aquatic plants on the bottom of the water, and there should be hidden caves to increase the attachment of shrimp fry for molting, and also to facilitate the inspection of fry by washing them with water hyacinths to grasp the fry emergence time and shrimp growth.

2. Add fences and filters at the water inlet to prevent harmful organisms from entering the pond, prevent frogs from entering the pond to lay eggs, and prevent tadpoles from eating shrimp fry. At the same time, prevent parent shrimp from climbing and escaping.

3. Strengthen inspections and check the emergence of fry every morning and evening. When the shrimplets are separated from their mothers, promptly capture the broodstock and return them to the broodstock pond for further cultivation. Try to minimize inventory checks of the ponds and be especially careful during operations to avoid affecting the broodstock carrying eggs and the newly hatched shrimplets.

4. Ensure the timely cultivation of small zooplankton such as rotifers for feeding the newly hatched shrimps. It is estimated that 3-5 days before hatching, a small amount of small zooplankton should be caught from the special feed pond and put into the shrimp fry pond.

What is a green shrimp?

1. The scientific name of the green shrimp is Macrobrachium, which is mainly distributed in the freshwater waters of China and Japan. It has the advantages of high reproductive capacity, strong adaptability, wide diet and delicious meat.

2. Freshwater shrimp is one of the freshwater shrimps of the family Shrimp, order Decapoda, subphylum Crustacea, class Crustacea, phylum Arthropoda, kingdom Animalia. It grows fast, is large, reproduces quickly, has strong vitality, and is widely distributed in freshwater lakes in my country. Freshwater shrimp likes to live in shallow waters along rivers, lakes, ponds, ditches, or slow-flowing waters with dense aquatic plants. It stays dormant in the dark during the day and is active at night, often climbing and crawling on the bottom of the water, aquatic plants, and other objects.

3. It is an omnivorous aquatic animal, partial to animal feed, and the most suitable water temperature for its growth is 18-30℃. When the water temperature drops to 4℃, it enters the wintering period. When the water temperature rises above 10℃, its vitality increases. It likes to live in slow-flowing places with dense aquatic plants, and the depth of the habitat ranges from 1-2 meters to 6-7 meters. It is backlit, hiding in the dark during the day and coming out at night.

What is the difference between white shrimp and green shrimp?

1. The main species of sea shrimp is white shrimp, and the main species of river shrimp is swamp shrimp. They both belong to the family of Longarmidae and are very similar in appearance, but their taste and texture are quite different, so the market prices are also quite different.

2. White shrimp is also known as shaking shrimp, river bald shrimp, and spring shrimp. It is covered with carapace all over its body. The second section of the carapace on the abdomen covers the outside of the first section of the carapace. There are two short whiskers. The body is white and transparent with small blue or red spots. The shell is very thin but relatively hard. The shrimp body is slightly flattened laterally and the shell ridges are slightly ridged.

The best season to eat freshwater prawns is summer. Now it is summer, so if you have the conditions at home, you can buy some freshwater prawns for eating. Of course, more and more people are starting to breed freshwater prawns.

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What is the difference between factory-based shrimp seedling cultivation and earthen pond seedling cultivation?

At present, there are two types of seedling raising methods used in production: earth pond seedling raising and factory seedling raising. The seedling raising process of freshwater shrimp refers to the process of artificially raising the newly hatched nauplii for about one month to cultivate them into shrimps with a body length of about 1 cm.

Factory seedling cultivation is indoor cement pond seedling cultivation, which is a relatively modern seedling cultivation method. At present, it has been widely used in shrimp seedling cultivation and Macrobrachium rosenbergii seedling cultivation. It has also achieved quite good results in the use of freshwater shrimp seedling cultivation. It is less restricted by natural conditions and can control the indoor temperature to make the seedlings emerge earlier than earthen pond seedling cultivation. Moreover, the seedlings emerge basically at the same time, with uniform specifications and large quantities, which is convenient for large-scale breeding. Factory seedling cultivation also has the advantages of easy management. However, it has high requirements for equipment and technology, and it is not possible to be widely adopted at present. Water quality control is more difficult than that of earthen ponds.

Earthen pond seedling raising adopts the traditional seedling raising technology of freshwater fish in my country. It requires little investment, has quick results, is simple and easy to operate, especially the water quality changes slowly and is easy to control. It is currently widely used. However, earthen pond seedling raising cannot control the survival rate and exact number of shrimp seedlings at each stage, the yield per unit area is low, the bait is wasted, and the shrimp seedlings out of the pond are uneven in size and difficult to catch.