May I ask you what kind of sudden diseases will come out of the prawns leeches, and what are the gen

It is mainly caused by eating stale food and poor water quality.

Leech survival and disease resistance is quite strong, as long as in accordance with the scientific feeding method to operate, in the breeding process rarely occur disease, but if the feeding management is not appropriate, it will also cause leech disease. The main causes of leech disease are as follows.

a) Temperature instability.

Temperature instability refers to the low temperature or large temperature difference between day and night, which will reduce the disease resistance of leeches, causing leeches to be unsuitable or diseased. If protective measures are not taken in time when it is cold, such as freezing in the cold season of spring, it will cause leeches to become sick or die; Failure to take measures to cool down and prevent heatstroke in hot times, such as high water temperature and direct sunlight, will cause leeches to lose their appetite and even die.

b) Excessive density.

The breeding density of leeches is generally related to the outside temperature. When the temperature is low, the density can be appropriately larger; When the temperature is high, the density can be appropriately smaller. In the actual breeding, the spring temperature is low, the density should be larger, and because it is the planting period, it cannot be too large.

In summer, the temperature is high, and the breeding density should be smaller, and due to the large number of leeches, it seems that the breeding water body is insufficient. If the stocking density is more than 3 times higher than the normal density, it will inevitably cause the leech activity space to be relatively reduced, coupled with insufficient or uneven distribution of bait, excessive excrement, it is possible to kill each other, or cause the occurrence and spread of diseases.

3) Deterioration of water quality.

As the leeches grow up gradually, the excrement in the pond continues to increase, coupled with the accumulation of a large amount of bait and the rise of temperature, or in the high temperature season for a long time, if the water is not changed in time, the pool water will be rotten, and in serious cases, it will be black and smelly, and harmful bacteria will multiply in large numbers, which is very likely to cause various infectious diseases.

iv) Malnutrition.

The causes of malnutrition are: first, the breeding density is too large, and the bait is unevenly distributed, which makes the weak weaker, and gradually emaciated, the physical fitness declines, and the infection is sick or dead; The difference is that the nutrient ratio of bait is unreasonable, and long-term feeding of a single bait causes malnutrition and decreased resistance; The third is that the bait does not follow the principle of "four determinations", and the leeches are hungry and full, and sometimes eat spoiled food, which will also cause illness or death.

Leech is a special animal with high medicinal value, containing hirudin and more than a dozen kinds of amino acids, and is one of the Chinese medicinal materials that are in short supply in the domestic and foreign markets. With the continuous development of modern science and technology, the medicinal value of leeches has been continuously developed, and the market demand has also increased year by year. This opens up broad prospects for the artificial cultivation of leeches.

Leech aquaculture has the advantages of small investment, quick effect, low cost and high efficiency, and can be cultivated in rural areas in front of and behind the house or in waste fish ponds.

Water shrimp have strong vitality and rarely break out of diseases and infectious diseases. However, there are also individual leeches that are affected by external factors (water environment, biological factors, human factors) or their own factors, causing normal metabolism to lose control and disrupting the normal life activities of leeches, resulting in lesions in a small number of leeches. The common diseases in the process of breeding leeches are mainly as follows:

1.Dry blight. The leeches on the spawning table around the pond, if there is no awning, will cause the leeches to become dehydrated due to the high temperature and low humidity, and the leeches will lose their appetite, be inactive or inactive, emaciated, shriveled and blackened.

Prevention and control methods: Build an awning around the pool, put more wooden blocks and tiles, and sprinkle water frequently to cool down and increase humidity. Soak the leeches in salt water for 12 minutes each time, 2 times a day.

Common diseases in the process of leech breeding include leech enteritis, edema, blight, bubble disease, bacterial infection, etc.

The leeches in the picture appear obvious atrophy phenomenon, in the past two days, many farmers and friends have this kind of phenomenon, mainly due to the large temperature change, high temperature and rainy weather, resulting in a variety of diseases concurrently, the leech in the picture is atrophied and enteritis complication, mainly or the early prevention work is not in place.

Prevention and control methods: Leech intestinal health, leech stimulant stop, Wuhuang Shuang leech dew, leech oxygen are used together, and three days later, use leech arc treasure to prevent secondary bacterial infection.

In addition, after the symptoms are alleviated, it is necessary to carry out regular bottom changes in the later stage, and bacteria are easy to breed at the bottom in hot weather.

a) Perforation of the body surface.

Affected individuals develop white spots on their backs or abdomen. And then festered and opened into holes. It is suspected to be caused by bacterial infection after being bitten by predatory aquatic insects or other natural predators.

b) Bleeding in the abdomen.

Affected individuals develop red hemorrhagic spots on the ventral surface of the body, move slowly, and die shortly after. It may be caused by infection with pathogenic bacteria.

c) Abdominal knots.

Diseased premature bodies have a hard lump in the abdomen of the body. Hard lumps are sometimes arranged symmetrically. Enlargement of seminal vesicles or seminal nests was determined by dissection.

This may be caused by parasitism of a protozoan monocyst is. Therefore, it is best to feed mollusks such as mussels and snails when breeding leeches, and not earthworms, because there are often a large number of tufts parasitic in the male gonads of earthworms. to prevent contagion.

Anemia, because he's a vampire.

Leech and its dried products are processed into traditional Chinese medicine, which has the functions of treating stroke, arterial blood pressure, high systemic circulation, stasis, amenorrhea, bruising and injury. In recent years, it has been newly discovered that the preparation of Yuzhaoyan leech has special effects in the prevention and treatment of cardiovascular and cerebrovascular guessing diseases and anti-cancer. Leech Zhen Yinqian is used for health care, it is recommended that your condition need to go to the hospital outpatient clinic to find a special doctor to test the condition of symptomatic medication.

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.

Leeches, also known as medical leeches, commonly known as water leeches, are distributed all over the world, with more than 300 species, and more than 100 species in China. All the animals dried by the wide-bodied golden leech, the brown leech, and the Japanese medical leech were recognized as traditional Chinese medicinal materials by the Pharmacopoeia of the People's Republic of China (referred to as the Chinese Pharmacopoeia Phoenix) [1].

This is a leech, and there is a leech. One fat and one thin. There are only two types of leeches.

This is not a leech, it is a horse cockroach.