Is it easy to raise leeches? the cage culture technique of leeches

Leeches are also called leeches, but in our impression, it is a terrible animal that grows in rice fields in the middle of summer. if it is not careful, it may climb on its legs and suck blood, but in the eyes of farmers, leeches are very valuable treasures. Fresh leeches can be sold at a high price in the city, so is it easy for leeches to raise? Let's take a look.

Are leeches easy to raise?

1. Leech breeding is actually a process of death. As long as the lower the mortality rate is controlled, the higher the yield will be. In the end, the fruit rate will be 10-20%. If you think about it, the annual reproduction of a leech is at least 40 times, that is to say, a leech can reproduce at least 40, 100 jin can reproduce 4000 jin, and the survival rate is 20%.

2. As for how high the cost of leech breeding is, it depends on which breeding model and the cost of introducing seedlings to you. If it is earthen pond and cage culture, in the first year, land rent + infrastructure + seedlings + management tools, facilities, about 20,000 yuan per mu, can save the cost of infrastructure tools and facilities in the second year, and only need a little modification.

Net cage culture technique of leech

1. The area of the fish pond is 1000 square meters, long from east to west, wide from north to south, flat bottom without silt, convenient for entry and drainage, and the perennial water level is not less than 1.0m. In the pond, there are several rows juxtaposed and misplaced, each row is 2 meters apart, the cage in the row is not spaced, more than 1.5 meters away from the ridge of the pond, there are 50 rows of 10 in each fish pond, the depth of the cage is 0.2 meters, the exposed water is 0.8 meters, and the bottom of the cage is about 0.2 meters from the bottom.

2. The cage is a rectangle made of polyethylene jointless mesh cloth, with an open cage with 0.15 meters of anti-escape eaves extending inward around the upper surface, which is fixed with wooden piles and tightened with soft steel wire rope.

3. After doing all the preparatory work, put the 20 jin leech egg cocoon which has been hatched in the foam box soil for 20 days and is about to break the cocoon after cleaning. In 20 young leech cages, about 400 egg cocoons were released in each cage, then 2 foam box covers were put in each cage, 2-3 Misgurnus anguillicaudatus and 4-5 grass carp were put in on the 10th.

4. on the second day after the leech egg cocoon was put into the box, the polyethylene mesh with a mesh of 5cm, which was cut into 20.5m × 2.05m, was covered on four rows and five longitudinally arranged cages to prevent bird damage, and the anti-bird net was stitched and fixed on the cage according to the standard of 1 meter and 1 knot with a net needle.

What kind of food do leeches eat?

1. Leeches are omnivorous animals, taking the blood or body fluids of animals as the main way of life, often using plankton, insects and molluscs in the water as the main bait, and artificial conditions with all kinds of animal viscera, cooked egg yolk, formula feed, plant residue, freshwater snail shellfish, miscellaneous fish, earthworms and so on.

2. Leeches eat snails and grow fastest, and it is also its main food. The seedlings began to eat three days after entering the water. Desquamate begins in about seven days, and desquamation is one year old at a time. The best growth period of leeches is from 3 to 9 years old, and the temperature is 25 ℃-28 ℃. It takes about 20-30 days for the seedlings 5cm--6cm to grow to 10 grams of finished leeches, and about 200 Mel leeches are fed on 1 square meter of water. Under normal circumstances, a young leech takes three to five days to absorb a snail. Take 100 square meters as an example, about 35 kilograms of snail lions are fed every week.

The prospect of leech culture

The main results are as follows: 1. the dosage has increased greatly: the elderly population in China has increased, the number of people suffering from cardiovascular and cerebrovascular diseases is increasing year by year, and the number of new drugs, specialty medicines and proprietary Chinese medicines produced with leeches as the main raw materials is increasing day by day. the raw materials for leeches have exceeded tens of times of those in the 1980s and 1990s.

2. China began to raise leeches artificially in 1995 and achieved success. although the scale of development is not large at present, the benefit is very considerable, with a net profit of more than 20,000 yuan per mu, which is 7-10 times of the current benefit of fish culture. Due to the promising market prospects and considerable benefits of artificial breeding of leeches, some people of insight have begun to organize large-scale artificial breeding to seize the market.

Leeches can also be sun-dried to sell, a jin of air-dried leeches can be as high as 600 yuan, and leeches have high medicinal value, can be soaked in traditional Chinese medicine, can be used to treat stroke and hypertension, can also be used to prevent cardiovascular and cerebrovascular diseases, many functions, great demand.