The cultivation of leeches and leeches, how to breed leeches

Breeding leeches, it is best to build ponds in sheltered from the wind and sun, convenient drainage and irrigation, the time to put leeches is suitable in early spring, leeche varieties require large size and high yield, feeding can be fed snails, earthworms, insect larvae and animal blood, etc., but also need to pay attention to clean water quality, high temperature season needs to change water frequently.

1. Site construction

If you want to breed leeches, then you first need to build a breeding site, generally it is best to build the best plot in the shelter from the wind and sun, the drainage and irrigation is convenient, the pond stem is high, the water depth is 1 meter, the pond diagonal needs to be set up with water inlet and drainage, and the bottom of the pond can also put some stones and branches, which is convenient for leeches to inhabit and reproduce.

2. Stocking

When breeding leeches, it is best to choose varieties with large size and high yield, because leeches like to grow in a warm environment, so according to its habits, it is generally best to put in the breeding in early spring, so that around October, leeches can be **.

3. Bait feeding

The growth of leeches needs to have sufficient food**, when breeding, you can feed snails, earthworms and insect larvae in the pond for leeches to eat, you can also feed some animal blood, pay attention to each feeding, you need to remove the residue in time, so as not to pollute the water quality.

4. Water quality requirements

The requirements for water quality are not very strict, but when artificially breeding, it is necessary to ensure that the water quality is clean, and it is also necessary to place aeration equipment in the water, so that leeches can grow healthily, and the water temperature is best between 15-30.

1. Water quality management. Water is one of the most important factors for leeches, and the reason why there is less and less water quality in the wild is because many of the water quality has deteriorated and it is no longer able to survive. Leech water to choose natural and pollution-free, some fertilizer water or pesticide content of higher water quality will have a more serious impact on leeches, so farmers should be cautious when choosing water sources.

Secondly, in order to ensure the quality of the water source of the breeding pond, it is best to maintain the circulation of live water for a long time.

2. Breeding density. Don't think that leeches are relatively small and think that leeches can raise a lot per mu, generally speaking, the number of breeding per mu is basically about 2200-2500, and the seedlings are generally about 40-50 catties. Because there is no guarantee that the leeches will be evenly distributed throughout the farm, a little less can maintain the growth rate and quality of the leeches.

Therefore, it is best to divide the breeding site to maintain the uniform distribution of leeches to the greatest extent.

3. Feeding. The common food of leeches is snails, mussels and some animal blood clots, etc., in the early stage, a certain number of snails and mussels are evenly placed in the breeding site, and then some blood clots are supplemented to feed to speed up their growth. Generally, it can be fed once in the morning and evening, and the feeding is often controlled at about 1-2 hours, and a small amount of feeding is given each time, so that the leeches can eat to the greatest extent and reduce the loss of feed.

4. Temperature control. Leeches are very afraid of high temperatures, so breeding sites must have means of temperature control, especially in summer. In the summer, it is best to build some shade nets or put some floating aquatic plants in the water to reduce the chance of direct sunlight contact with leeches.

If the temperature is too high, it is best to increase the depth of the pool appropriately and keep the bottom temperature more suitable for growth.

Leech culture techniques are as follows:1. The survival rate of leech seedlings is low, and it is not easy to reproduce from generation to generation. Therefore, when selecting seedlings, we should pay attention to selection.

In order to have a good harvest within one year of planting, it is necessary to select strong leeches with more than two instars as seedlings. The larger and more robust the leech, the higher the number of eggs, the higher the hatchability and survival rate.

2. Before breeding leeches, the water quality should be investigated, if the water source is polluted, it will likely lead to the death of all leeches.

Leeches, commonly known as leeches, have been recorded in the "Shennong's Materia Medica" and have high medicinal value; It grows and breeds in inland freshwater waters, and is a traditional Chinese special medicinal aquatic animal, and its dried products are soaked in traditional Chinese medicine, which has the effects of stroke, high blood pressure, stasis, amenorrhea, bruises, etc. In recent years, it has been newly discovered that leech preparations have special effects in the prevention and treatment of cardiovascular and cerebrovascular diseases and anti-cancer. It is mainly natural fishing in history, due to the abuse of pesticides and fertilizers in recent years, as well as the pollution of the environment by the "three wastes" of industry and agriculture, the wild natural resources have decreased sharply, and with the in-depth development of the medicinal value of leeches, its market demand potential is huge.