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 shrimps are white shrimps, and the main species of river shrimps are swamp shrimps. They all 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 conditions are required for shrimp farming in Marsh Ross? How should a shrimp farm be selected?

Macrobrachium rosenbergii, also known as Malaysian shrimp and long-armed freshwater shrimp, is a large freshwater shrimp. In my country, it belongs to the green shrimp, brown shell shrimp and Hainan macrobrachium. Originated in Southeast Asia, my country introduced Macrobrachium rosenbergii in 1976 and successfully planted it in Guangdong. Macrobrachium rosenbergii has been promoted to be cultivated all over the country due to its advantages such as fast growth, wide diet, good meat nutrition and short breeding cycle. So how to breed Macrobrachium rosenbergii? Let's learn together.

1. Pond Preparation

First, the breeding area of ​​the pond should be controlled according to the breeding volume, the water level should be kept at about 1.5 meters, the water source should be kept clean and sanitary, and there should be a good drainage system. After the breeding period, drain the pond water and then clean the bottom mud. Disinfect the pond half a month before stocking the shrimp seeds, and filter and refill the water one week before stocking. Finally, equip the pond with various breeding equipment such as aerators and water pumps, and then separate a small temporary pond outside the shrimp pond.

2. Temperature control

Macrobrachium rosenbergii originally belongs to tropical shrimp, so it has relatively high temperature requirements during breeding. The water temperature should be controlled at about 25 degrees during breeding, which is the best growth temperature for Macrobrachium rosenbergii. The water temperature must not be lower than 16 degrees. If it is lower than 16 degrees, Macrobrachium rosenbergii will be significantly hindered and gradually die over time. Therefore, it is impossible to breed Macrobrachium rosenbergii in northern my country, and due to the changes in temperature in my country. Therefore, the suitable breeding time in my country is only about 5 months.

3. Pond Environment

Macrobrachium rosenbergii is a benthic shrimp that likes to rest and roost in the grass during the day and comes out to forage at night. Macrobrachium rosenbergii is mainly caught with a pair of pincers. The swimming ability of Macrobrachium rosenbergii is not very strong, and its growth habits will change with the growth stage. For example, when the young shrimp are small, they are suitable for living in slightly brackish salt water. If there is no saltiness, it will soon lead to death. Finally, it is necessary to plant an appropriate amount of aquatic plants and phytoplankton in the pond to provide a good habitat for Macrobrachium nipponensis and prevent direct sunlight.

4. Water Quality

Water quality is crucial to the growth of Macrobrachium rosenbergii. In the process of breeding Macrobrachium rosenbergii, water quality should be observed every day. If the water quality is not good, it is fatal to Macrobrachium rosenbergii. Therefore, we must control the water quality. When it is found that the transparency of the water body is too little or too much, corresponding measures should be taken in time. The transparency of the pool water should be controlled at about 25-40 cm, which is not appropriate. The fertility and dissolved oxygen in the water body need our attention.

It requires a relatively long period of light exposure, and the water source must be changed regularly. It is necessary to raise other aquatic plants while breeding shrimps. Shrimp farms can choose some warm areas in Yunnan.

The location and soil quality of the foundation. The shrimp farm needs to be built in a place with relatively stable terrain, flat terrain, sufficient water resources, suitable water quality, and convenient power supply. The soil quality is mainly loam and clay, and sand is not suitable for shrimp ponds.

It needs sufficient water, enough space and suitable temperature. Macrobrachium rosenbergii needs to choose unpolluted lake water or river water as its water source.