Propagation techniques of Green Shrimp seedlings

Among the shrimp, the green shrimp is more popular, because the meat of the green shrimp is more delicious, and the living environment of the green shrimp is cleaner, so the green shrimp is easier to clean when eating, so the market demand of the green shrimp is greater.

Culture conditions of green shrimp seedlings in ponds

Self-propagated green shrimp seedlings can generally cultivate 3 million-4 million seedlings of about 2 cm per mu. Farmers can determine the area according to the demand, select a number of ponds of 1-3 mu, and require that the silt of the pond is less than 15cm, the depth of the pond is 1.5m, and the pond water supply and drainage system is perfect. the water source condition is good, and the water quality is pollution-free.

Preparation for Culture of Green Shrimp seedlings

1. Clear the pond thoroughly. Breeding usually takes place at the end of May, so the ponds will be disinfected at the end of April and the beginning of May. Drain the pond water to 10-20 cm, clear the pond with quicklime, 150-200 kg per mu, and sprinkle evenly.

2. Plant aquatic plants. After 7-10 days of transplanting aquatic plants, verticillum verticillata was the best, which was easy to survive and grew fast, forming stoloniferous shrimp for hatching. In order to make aquatic plants form colonies quickly, a small amount of organic fertilizer can be applied. After the aquatic plants flock, you can put the egg-holding shrimp.

3. Disinfect and kill insects before release. Insecticidal treatment should be carried out according to the situation in the pond before putting the egg-holding shrimp. 4-5 days before the release, small irritant insecticidal drugs such as fish, insect and star killing shrimp should be used to kill large cladocera, water spiders and other aquatic insects in the water, and the pond water should be added to 50-60 cm.

The release of green shrimp seedlings to egg-holding shrimp

After the medicine of the pond water disappears, put the egg-holding shrimp, 8-10 kg per mu, requiring the choice of egg-holding shrimp with better germplasm in the lake or outside. In order to observe the development of fertilized eggs, 3-4 cages of 1-2 meters can be set up in one corner of the pond, and about 50 egg-holding shrimps are put in each cage. The color changes of fertilized eggs are observed every day. When the fertilized eggs turn purple and eye spots appear, mature organic fertilizer should be piled in the four corners of the pond, and chicken, duck and cow dung should be used to cultivate palatable bait in the pond, so that the flea larvae with broken membrane can get open bait.

Shrimp with eggs should be fed 1-2 kg of chopped fish every day during the pond.

Daily management of green shrimp seedlings

1. Feed. After the egg-holding shrimp fertilized eggs emerge from the membrane, feed soybean milk into the pond and begin to throw 1 kg of soybean milk per mu every day, depending on the water color of the pond and the weather.

2. Management. During the cultivation of young shrimp, probiotics such as EM and photosynthetic bacteria should be applied once a week to improve water quality and supplement palatable bait. Quicklime is applied every 10 days to regulate water quality and supplement calcium sources. The dosage is 15kg per mu of water depth, so that the pH value of pond water is between 7 and 8.

3. Monitor the water quality every day. The dissolved oxygen, pH value, ammonia nitrogen and nitrite were determined day by day and treated according to the determination.

4. add new water at the right time. When carrying out the breeding of green shrimp, it is necessary to do a good job in entering and draining water. The inlet and outlet should be filtered with 60-mesh yarn to prevent wild fish or fish eggs and other aquatic animals from flowing into the pond. During the cultivation of shrimp fry, add fresh water every 4-5 days, the amount of water injected is 10-15 cm.

5. when the seedlings grow to about 1 cm, you can change to artificial powder, which is mainly composed of wheat bran, fish meal, secondary meal and so on. During the cultivation period, attention should be paid to the growth of aquatic plants in ponds. If they are too dense, they should be removed so as not to compete for nutrients.

Fishing and transportation of green shrimp seedlings

Generally speaking, after 30-40 days of cultivation, the young shrimp can grow to about 2 cm, which can be considered as the seedling of commercial shrimp culture at this time. Pull the net with summer flower net, before fishing, the aquatic plants in the pond should be removed in order to pull the net. For short-distance transportation, live fish barrels can be used for oxygenated transportation. each barrel can be loaded with 300000-400000 pieces within 2 hours depending on the transport distance, and some aquatic plants can be properly laid in the container during transportation, which can improve the survival rate of transportation.

In the process of breeding shrimp, their daily management is very important, and shrimp also likes to live in an environment with water, so farmers should also pay attention to its water quality and living environment. Only by improving its living environment can shrimp survive better and improve its quality of life.