Fish sporidiosis, how to treat fry sporidiosis

Summary. Hello, ichthyosporidium** can be soaked in 1 of 90 crystal trichlorfon for 3 to 10 minutes, and at the same time, the pond should be splashed with crystal trichlorfon. Every 10,000 fish should be fed with 2 grams of chlorproguanil hydrochloride mixed feed, and they should be fed continuously for about a week.

Myxosporidium, which parasitizes the gill petals, can be soaked in 2% salt water for half an hour, once a day. Two times in a row will work. Furthermore.

When managing at ordinary times, we should pay attention to the environment provided, how to treat fry sporozoides?

Hello, ichthyzoidium** can be soaked in 1 of 90 crystal trichlorfon for 3 to 10 minutes, and at the same time, it is necessary to splash crystal trichlorfon in the pond. Every 10,000 fish should be fed with 2 grams of proguanil hydrochloride mixed with feed, and Xian Zheng will be fed continuously for about a week. Myxosporidium, which parasitizes the gill petals, can be soaked in 2% salt water for half an hour, once a day.

Two times in a row will work. Heng Min in addition. When managing it in ordinary times, it is necessary to pay attention to the environment provided, and there are spores on the small crucian carp fry.

Sorry for the delay. If already infected with sporozodias: Recommended Regimen 1:

1 pack of Dikezuli premix + 1 package of fibrillation + 1 package of Cordyceps, 10 kg of mixture, and used in Fubu Town for 5 days. Suggested scheme 2: 1 cap of methionine iodine + 1 package of 5-10 kg of mixture.

Use it for 3-5 days in a row. At the same time, the external use of methionine iodine and fibrid, the lack of coarse mixture mixed with water splashed throughout the pool to increase the penetration of the drug, at the same time, iodine also has the effect of sterilization and prevention of bacterial secondary infection. The dosage of methionine iodine is 2-4 acres per bottle.

Sporozoides are a large class of pathogenic protozoa, there are many kinds, there are a lot of fish disease sporozoi, mesentery, gills, brain, spinal cord, internal organs can be parasitic, iodine bubble is the main disease organism of carp, generally to prevent and control, fish infection is too late.

Prevention and control methods: 1. Thoroughly clear the pond with quicklime, etc., which can inhibit the mass reproduction of spores and reduce the occurrence of this disease;

2. Before stocking the fingerlings, put 500 grams of potassium permanganate with 1 cubic meter of water, stir to fully dissolve them, into a solution of 500 milliliters of concentration, soak the fingerlings for 30 minutes, or put 500 grams of lime nitrogen with 1 cubic meter of water, fully stir into a suspension, and soak the fingerlings for 30 minutes.

Myxosporidiosis**.

The disease is caused by myxosporidium parasitizing the fish**, gills, intestines and nervous system. The parts of fish disease have cysts, which are gray-white punctate and nodules, and the common myxosporidium are iodospora cake-shaped, sulfonosporium carp, iodospora crucian, and iodospora carp. Symptoms:

Diseased fish are emaciated, blackened, solitary or restless and swim wildly, and are extremely harmful to fish species from October to February. **Method The fish pond with a water depth of 1 catty of trichlorfon per mu is sprinkled with 1 catty of the whole pond, with an interval of 3 days and 4 days, and then splashed again.

2. For every 10,000 fingerlings or 100 catties of fish, feed with 75 grams of edible sulfur powder mixture for one week. 3. Add 10 grams of 90 crystal trichlorfon per catty of feed to feed fish, which can treat intestinal parasitic myxosporidium. This rule of law is also effective for ringworm disease.

Prevention and control of myxosporidiosis in freshwater fish farming technology is very necessary preventive measures; (1) Strictly implement the quarantine system (2) The excessive silt at the bottom of the pond must be removed and thoroughly disinfected with quicklime. 3) Strengthen feeding management and enhance the disease resistance of fish. (4) The water of the diseased fish pond must be disinfected before it can be discharged; Used tools should be disinfected; Sick and dead fish should be fished out in time, cooked as feed or buried far away from water sources.

**Methods There is currently no ideal **method, especially for myxosporidiosis parasitic in the liver, kidneys, spleen, gallbladder, swim bladder, gonads, muscles, and nervous system. Even myxosporidiosis that inhabits **, gills and intestines can only have a certain effect if it is carried out in the early stages of the disease.

1) The whole pool is sprinkled with crystal trichlorfon, and each cubic meter of water is put into crystal trichlorfon, and it is splashed once every 1-2 days, and 3 times in a row, which can reduce the condition of myxosporidiosis parasitic on ** and gills.

(2) For myxosporidiosis parasitic in the intestine, add l grams of crystal trichlorfon per kilogram of feed, mix well and make granular medicine with good stability in water and feed for 5-7 days, and at the same time splash crystal trichlorfon. If the condition is severe, the number of days should be increased appropriately.

3) For myxosporidiosis parasitic in the intestine, add levamizole hydrochloride to each kilogram of feed, mix well and make granular medicine with good stability in water and feed for 5-7 days, and at the same time splash crystal trichlorfon. If the condition is severe, the number of days should be increased appropriately.

(4) Jiang Liyan et al. introduced that type B sporofin was poured outside the whole pool, and grams of medicine were released per cubic meter of water, and 3 grams of type B type sporine were added to each kilogram of feed, which was effective for 2 consecutive doses.

5) Jiang Liuqing et al. introduced that the whole pool was poured to treat sporin, and each cubic meter of water was filled with milliliters, and at the same time, 2 grams of sporin were added to each kilogram of feed, and it was effective to take it twice in a row.

Hope it helps.

The first point is to sprinkle a little medicine regularly, the second point is to replace the water stains regularly, in fact, this is very important, and the third point it has a special insect prevention, this drug should be sprayed frequently.

Caution must be taken when selecting seedlings, and the quarantine system must be strictly implemented to prevent the fry from carrying spores themselves. Regularly change the low disinfection to enhance the water quality, improve the water environment, keep the water quality clean, and inhibit the breeding of bacteria and insect eggs at the bottom.

At present, the myxosporidium that harms crucian carp culture mainly includes: 1. Iodocystis honghu that causes crucian carp laryngosporidiosis. 2. Wuhan monopole worm that causes crucian carp skin sporidiosis.

3. Wang's monopolar worm that causes gill sporidiosis of crucian carp. The flow of different myxosporiasis is closely related to the life history of myxosporidium and the water temperature in various places and the culture cycle of crucian carp.

Clause.

1. Early diagnosis and prevention methods of crucian carp myxosporidiosis

Although the concept that the prevention of fish disease is more important than the first has long been known, due to the limitations of many factors, especially the lack of understanding of the life history of myxosporidium, the ** of crucian carp myxosporidiosis often begins with the appearance of macroscopic cysts, but the appearance of cysts means the appearance of mature spores, which is the late stage of infection.

At present, there are generally three methods for the early diagnosis of crucian carp myxosporidiosis:Morphological identification. For some species that need to undergo blood development, early diagnosis can be achieved through early blood testing, but this requires trained professionals; And because there is no ideal drug to kill myxosporidium in the blood stage, even if it is diagnosed, there is no good way to block the development of myxosporidium in the blood stage to mature spores.

Immunodiagnosis. Specific polyclonal or monoclonal antibodies for some sporozoa are used to identify specific antigenic sites, allowing for rapid identification of fish infection. The advantages of immunodiagnosis are that it is fast, convenient and easy to promote, but the accuracy of immunological methods in diagnosing crucian carp myxosporidiosis needs to be improved due to the great variation of surface antigens at different developmental stages of different myxosporidium and the same myxosporidium.

Molecular diagnostics. The specific genes or fragments of each myxosporidium can be amplified by molecular biology methods, which can monitor myxosporidium throughout the culture cycle with high sensitivity and specificity. However, the disadvantage is that it requires specific instruments and equipment, which is not conducive to clinical application.

Clause.

2. What are the drug methods for crucian carp myxosporidiosis?

Although there is no ideal specific drug, drugs are still the main method for controlling crucian carp myxosporidiosis. I would like to emphasize that the life history of Crucian carp Myxosporidium involves two hosts, and the myxosporidium that matures in the fish body needs to leave the host and enter the water body to infect benthic animals in order to complete its generational reproduction, and even the specific endophytic myxosporidium that can overflow the fish after the death and decomposition of the host fish has also evolved the ability to leave the host and enter the water body on its own, so for non-highly infected fish, fish can also be self-inflicted without drugs.

Therefore, the fundamental problem of fish myxosporidiosis is how to control the intensity of its infection and the secondary bacterial diseases that may be caused by myxosporidium infection. In addition, crucian carp myxosporidiosis is widely spread with the cross-regional spread of fry species and broodstock, and strict quarantine inspection is also an important means to reduce the occurrence of crucian carp myxosporidiosis.

There are no symptoms at the beginning of the infection, which can only be detected by microscopic examination. In the middle stage of infection, the gills, body surface, fins and other parts of the diseased fish are visible to the naked eye.

1. White or pale yellow sporangia of varying numbers, parasitic gills accompanied by increased mucus, rotting and swelling of gill filaments; parasitism on fins accompanied by fin decay; Parasitic on the body surface is accompanied by symptoms such as rough body surface and erection of scales. Diseased fish in the middle of infection are often accompanied by non-hypoxic cluster floating heads downwind, and a small number of deaths occur. In the later stages of infection, the mid-stage presentation is characterized by an exacerbation of symptoms, a sharp increase in deaths, and odors in individuals who have not died.

When clearing the pond, remove excessive silt, increase the dosage of quicklime or other drugs to kill the sporozoite. Fingerlings are soaked with a mixture of trichlorfon and copper sulfate before stocking.

There are generally three methods for early diagnosis: morphological identification. For some species that need to undergo blood development, early diagnosis can be achieved through early blood testing, but this requires trained professionals;

Immunodiagnosis. Fish can be quickly identified for infection by using specific polyclonal or mAb antibodies specific to some sporozoa to identify their specific antigenic sites.

Although there is no ideal specific drug for crucian carp myxosporidiosis, drugs are still the main methods for controlling crucian carp myxosporidiosis, including the use of copper naphthenate, anticoccidial drugs, and even some pesticides are used in some places, and their effects need to be evaluated. I would like to emphasize that the life history of Crucian carp myxosporidium involves two hosts, and the myxosporidium that matures in the fish body needs to leave the host and enter the water body to infect benthic animals in order to complete its generational reproduction, and even the specific endophytic myxosporidium that needs to be killed and decomposed by the host fish before it can overflow outside the fish, all of which have evolved the ability to leave the host and enter the water body on their own, so for non-highly infected fish, fish can also be self-inflicted without drugs.

It is necessary to judge according to the growth of the fish, observe the surface of the fish, observe some organs of the fish, can be carried out with some drugs**, and it needs to be prevented in advance.

Sporidiosis is caused by myxosporidium of the class Protozoan Sporozoa that parasitizes the gills or body surface of fish.

Myxosporidium is usually parasitic on the body surface and gills, and cysts are visible to the naked eye. Remove the contents of the cyst on the gill or body surface and put it on a glass slide, add a small amount of water to observe under the microscope, you can find a large number of myxosporidium spores that fill the field of vision, the morphology is ovoid or oval, flattened, and there are 2 polar sacs at the front end, equal or unequal size, the diagnosis can be confirmed.