What kind of food do river shrimp usually eat? How much is the profit of farming mu?

River shrimp is a kind of freshwater shrimp with high nutritional value, which tastes delicious and is deeply liked by everyone if it is cooked and eaten. As the saying goes, big fish eat small fish, small fish eat shrimp, so have you ever thought about what food river shrimp eat? Now there are some farmers engaged in river shrimp farming, how much is the profit per mu of farming?

What kind of food do river shrimp usually eat?

River shrimp are omnivorous animals, and the young shrimp feed on plankton. The main food of adult shrimp in natural waters is a variety of benthic small invertebrates, dead 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.

Second, how much is the profit per mu of river shrimp farming?

1. Pond conditions and cleaning

It is appropriate to choose freshwater ponds or shrimp ponds with an area of 3 mu and a water depth of 1.5 to 2.5 meters, with sufficient fresh water sources, no pollution and sandy bottom.

2. Fertilize and cultivate bait

One week before stocking, the shrimp seedlings were filtered with 60-80 mesh sieve, 30 cm of water, and 50 kg of base fertilizer (fermented animal manure) or 5 kg of urea per mu to cultivate the basic bait.

3. Shrimp fry restocking

In general, shrimp fry can be released when the water temperature is stable at 18-20 ℃ in late May. Shrimp seedlings need to be desalinated for more than a week, with a specific gravity of less than 1.003 before they can be released. Generally, 30,000 shrimp seedlings of 0.7-1.0 cm per mu are stored, and the seedlings below 0.7 cm need to be temporarily reared. A total of 80,150 silver carp species of 10 cm and 20 cm can be mixed in shrimp ponds.

4. Bait feeding

There is no need to feed the shrimp seedlings in the pond for one month, but mainly depends on the plankton in the pond. One month later, the compound feed was fed, supplemented by fresh fish, shellfish, etc., and the feeding rate was generally 3% or 5% of the shrimp body weight. The amount of bait can be increased appropriately from July to September, according to the principle that there is no residual bait, the number of bait is 2 to 3 times a day, the amount of bait in the daytime accounts for 3%, and the amount of bait in the evening is 3%.

5. Diverting water to prevent diseases

After 10 days of stocking, the shrimp fry began to add water gradually, adding 10-15 cm of water per week. Change water 20,30cm every 2-3 days in high temperature season. Every half month or so, the whole pool is sprinkled with 5 kilograms of quicklime to improve the water quality and bottom quality, as well as sterilization to promote shelling and growth. At the same time, 1 ‰ ~ 3 ‰ garlic bait should be mixed for 3 days at 15 ~ 20 days.

6. Capture

General breeding 80 million 100 days, shrimp body length up to 7 million 10 centimeters can be caught and sold according to the market situation. Can be caught by net or water collection, 36 hours away from the water dry transportation, the survival rate can reach 90%.