68 results about "Ichthyophthiriasis" patented technology

The invention relates to a Chinese medicament for preventing and controlling ichthyophthiriasis. The Chinese medicament comprises the following components in part by weight: 3 to 5 parts of dried ginger, 7 to 15 parts of hot pepper and 80 to 90 parts of bran. A method for preparing the Chinese medicament comprises the steps: drying and crushing the dried ginger and the hot pepper, evenly mixing the powder of the dried ginger and the hot pepper and the bran in proportion, and mixing the Chinese medicament components and loess in certain proportion to prepare a perforated cuboid medicament brick for further use. The Chinese medicament has no toxic or side effects and has excellent therapeutic effects on ichthyophthiriasis of fish, loach, eel and the like.

The invention discloses a sea fish ichthyophthiriasis prevention and treatment method. Fishes are susceptible to ichthyophthiriasis, and ichthyophthiriasis means white spots and mucus appearing on the gills, fins and skin of fishes, and can cause surface inflammation, necrosis, scale shedding and other symptoms on the bodies of fishes. By arranging net cages and choosing a fry release period, in combination with the feeding of multivitamin and immune polysaccharide for enhancing the resistance in the bodies of fishes and the treatment measures of feeding amoxicillin at the beginning of the disease infecting the fishes and hanging trichlorphon and sprinkling abamectin into the net cages in the outbreak period of ichthyophthiriasis, the sea fish ichthyophthiriasis prevention and treatment method prevents and controls ichthyophthiriasis. On one hand, the ichthyophthiriasis resistance of the sea fishes is enhanced, so the sea fishes cannot be easily diseased; moreover, since the fries are released early, at the beginning of ichthyophthiriasis outbreak, the fishes already grow up, the body resistance is enhanced, and therefore the fishes are less susceptible to ichthyophthiriasis; after the fishes are infected with ichthyophthiriasis, at the beginning of infection, the measures are adopted for treatment; consequently, prevention and treatment are combined, and the incidence rate of sea fish ichthyophthiriasis is greatly decreased and even almost eliminated by integrated control.

The invention provides a Chinese medicinal herbal compound preparation for killing ichthyophthirius multifiliis and a preparation method and application thereof. The Chinese medicinal herbal compound preparation consists of the following raw material medicaments in percentage by weight: 30 to 40 percent of papaya, 20 to 34 percent of areca seed, 10 to 14 percent of thinleaf milkwort root-bark, 10 to 13 percent of cassia bark, 10 to 12 percent of pokeberry root and 6 to 10 percent of eucalyptus leaf. The preparation method of the Chinese medicinal herbal compound preparation comprises the following steps of: drying and crushing each raw material medicament respectively, and sieving to obtain dry powder of each raw material medicament; mixing the dry powder of each raw material medicament, adding water for soaking, decocting for two times, filtering, and combining two-time filtrate to obtain filtrate a; and boiling the filtrate a for concentrating to make each liter of filtrate contain 100g of raw material medicaments so as to obtain the Chinese medicinal herbal compound preparation. The Chinese medicinal herbal compound preparation is safe, effective and environmental-friendly and can be used for preventing and treating ichthyophthiriasis of fishes.

The invention belongs to disease control technologies in aquaculture, and especially relates to a traditional Chinese medicine formula for treating ichthyophthiriasis in fish. After fish seeds are confirmed to be suffering from ichthyophthiriasis, boiling 0.5 to 0.75kg pepper powder with 1.5kg smashed ginger for half an hour for each acre of water (water depth of 1 m), stirring evenly, and splashing the mixture obtained in a whole pond, once a day for two successive days.

The invention discloses application of curcumin to preparation of drug for killing fish epizoic infusorians, particularly relates to application to preparation of drug for killing ichthyophthirius multifilis, and belongs to the technical field of drug for killing parasites. According to the application, the curcumin is applied to the preparation of drug for fish epizoic infusorians for the first time, particularly for killing the ichthyophthirius multifilis; the parasites can be completely killed in the effective dosage range; and the effect of preventing and controlling ichthyophthiriasis is achieved. The application has the advantages that the curcumin sources are wide; the cost is low; the raw materials are rich; the preparation process is industrialized; no residue or no pollution on environment exists; no poison or no harm is caused on the human body; the half lethal concentration (56.8mg / L) on fishes is 187.4 times of the medium effective concentration (0.303mg / L) for killing the ichthyophthirius multifilis; safety is achieved on the fish; huge potential for developing novel fish drug for preventing and treating the fish epizoic infusorians is realized; and the the application prospects are wide.

The invention relates to the technical field of pesticides for preventing and treating diseases of aquatic animals, which particularly discloses a pesticide for preventing and treating ichthyophthiriasis of pet fish. The pesticide consists of sodium chloride, sodium bicarbonate, magnesium chloride, formaldehyde, polyiodide, potassium permanganate, carbazochrome sodium sulfonate, copper sulfate, vitamin K1, ferrous sulfate and water in balance, wherein the concentration of sodium chloride is 15-25g / L, the concentration of sodium bicarbonate is 4.6-5.4g / L, the concentration of magnesium chloride is 0.12-0.25g / L, the concentration of formaldehyde is 20-40mg / L, the concentration of polyiodide is 6-15mg / L, the concentration of potassium permanganate is 1.6-3.0mg / L, the concentration of carbazochrome sodium sulfonate is 1.2-2.0mg / L, the concentration of copper sulfate is 0.05-0.15mg / L, the concentration of vitamin K1 is 0.6-1.0mg / L, and the concentration of ferrous sulfate is 0.02-0.07mg / L.The pesticide provided by the invention can efficiently prevent and treat ichthyophthiriasis of pet fish, guarantee healthy development of pet fish cultivation, and has extensive market prospect and economic benefit.

The invention relates to the technical field of prevention and control of aquaculture diseases and particularly relates to a medicine for treating a small melon worm disease of aquatic animals as well as a preparation method and an application method of the medicine. The medicine for treating a mystus guttatus white-spot disease is composed of a first-stage medicine, a second-stage medicine and a third-stage medicine; the first-stage medicine is an acetic acid solution; the second-stage medicine is a methylene blue solution; the third-stage medicine is prepared from chilies and fresh gingers. By using the medicine to carry out staging treatment, Ichthyophthirius on fish bodysurfaces and in vesicae are completely killed in one step and the possibility that the Ichthyophthirius reappear is avoided; the medicine is ecological and environmentally friendly, does not damage the environment, is harmless to human bodies and no medicine residues exist in fish bodies.

The invention discloses a method for preventing the ichthyophthiriasis of marine-cultured fishes. The method comprises the step of: respectively installing medicine bags with a parasite expelling function at four corners of a fish fillet in a hooking way. After the method is used, the medicine bags with the parasite expelling function are installed at the four corners of the fish fillet in the hooking way, so that the aim of parasite expelling can be achieved, the medicine bags are good in parasite expelling effect, and the method is very simple and easy to operate.

The invention provides an intensive culture method for improving rhinogobio ventralis larva culture survival rate. The method comprises the steps of: step 1, pre-larva culture, step 2, post-larva culture, and step 3, juvenile fish culture. In the step 3, juvenile rhinogobio ventralis is cultured in a small water culture pond. An artificial compound feed is used for feeding twice a day. After each feeding, the small water culture pond is cleaned in time, and 60-80wt% of water in the small water culture pond is replaced. With the intensive culture method for improving rhinogobio ventralis larva culture survival rate, a problem that rhinogobio ventralis larvae and juvenile are vulnerable to ichthyophthiriasis can be solved. Ichthyophthiriasis is effectively controlled during the rhinogobio ventralis larva culture stage, and rhinogobio ventralis larva culture survival rate is improved. Therefore, a basis is established for the breaking-through of rhinogobio ventralis larva large-scale culture technology.

The invention discloses a composition for treating ichthyophthiriasis and relates to the technical field of aquaculture. The composition is prepared from the following raw materials in parts by weight: 5 parts of elecampane, 6 parts of nutmeg, 6 parts of fructus psoraleae, 6 parts of coix seeds, 8 parts of white lablab beans, 5 parts of chicken gizzard-membranes, 5 parts of coptis chinensis, 5 parts of rhizoma alismatis, 7 parts of coked hawthorns, 3 parts of fructus amomi, 7 parts of peppers and 8 parts of fresh gingers. The composition has the beneficial effects that the medicine is cheap, easy to purchase and is a normal food material; the peppers and the fresh gingers can be used for effectively and quickly killing ichthyophthirius to treat ichthyophthiriasis without causing any pollution to water and generating drug resistance.

The invention discloses a traditional Chinese medicine composition for preventing and treating fish fresh water Ichthyophthiriasis. The traditional Chinese medicine composition contains active ingredients, and the active ingredients comprise sweet wormwood extract, radices stellariae dichotomae extract, moutan bark extract and folium isatidis extract. The traditional Chinese medicine composition has the beneficial effects that the selected Chinese herbal medicine components accord with the specifications of The Drug Administration Law of the PRC, adults, larva, sporocyst and eggs of small melonworms can be killed in a relatively short period of time by using combined action of all the traditional Chinese medicine, the disease symptoms of fish are alleviated, the survival rate is improved, and the traditional Chinese medicine composition is completely harmless for human bodies.

The invention discloses a culture method for sturgeon in flowing water. A formula for an artificial feed comprises the following components in percentages: 45% of fish meal, 15% of feed yeast, 15% ofbean cakes, 5% of maize meal, 5% of dry milk, 3% of mixed salt, 2% of amino acid, 2% of an adhesive and 5% of an attractant. According to the invention, a correct sturgeon culturing method creates a good living environment for the sturgeon, and the quality of water is guaranteed; bait and sturgeon feces in the interior of a pool are timely cleaned; and a scientific formula of the artificial feed provides good feeding bait for the growth of the sturgeon. Diseases and pests are prevented, and different measures are taken for different diseases during occurrence of diseases and insect pests, wherein (1) enteritis disease is treated mainly through antibiotics, (2) saprolegniasis is treated through an immersion bath of a table salt solution with a concentration of 0.05% for 20 min, and (3) ichthyophthiriasis is treated through soaking in a formaldehyde solution with a concentration of 0.05% for 30 to 60 min. Good survival of the sturgeon is guaranteed, and healthy culturing of the sturgeonis promoted. An EM bacterial liquid is used, so the quality of the water can be remained to be clarified; the quality of the water is prevented from aging; the growth of plankton is promoted; and diseases of the sturgeon are prevented from occurrence.

The invention discloses a novel use of 6-n-pentyloxyrheinic acid in control of saprolegniasis and ichthyophthiriasis, and further discloses a control agent containing the compound and a preparation method of the control agent. The control agent is composed of the following raw materials in percent by weight: 15%-50% of 6-n-pentyloxyrheinic acid, 5%-10% of a surfactant, 10%-30% of a dissolving agent and the balance of a solvent, wherein the sum of the raw materials is 100%. The preparation is low in toxicity to environment, unlikely to produce drug resistance, capable of effectively killing saprolegnia and ichthyophthirius multifiliis infected by fishes, has remarkable effects, and is simple in preparation process, low in production cost, simple in use method and convenient in promotion andapplication.

The invention discloses a procypris rabaudi breeding method. The procypris rabaudi breeding method comprises the following steps that 1, an outdoor cement pond is cleared and sterilized; 2, a cement pond base fertilizer is supplemented and pond water fertilizing is performed, wherein fermented cow dung or chicken manure is collected as the base fertilizer, the usage amount per mu is 200-300 kg, and 1-2 kg of biological fish guano is supplemented per mu; 3, an oxygen increase pump and a submerged pump are erected in the cement pond; 4, the water quality before stocking is detected; 5, procypris rabaudi is transferred to the pond for breeding, wherein the procypris rabaudi fry stocking density is 50-100 / m<2>, the parent procypris rabaudi stocking density is 0.3-0.5 kg / m<2>, the oxygen increase pump is started for oxygen increase, the submerged pump is started to flush water so as to form a flowing water environment. The procypris rabaudi breeding method is simple, strong in operability, good in practice applicability and capable of achieving effective control and treatment of procypris rabaudi ichthyophthiriasis. A test indicates that the initial cure rate after the procypris rabaudi infects the ichthyophthiriasis is 98% or above, and the medium cure rate is up to 80%-90%.

The invention discloses a medicament composition for preventing and treating fish ichthyophthiriasis, which is characterized by at least comprising the following raw materials in parts by weight: 10-50 parts of arteannuin, 5-10 parts of dandelion extract, 1-5 parts of dangshen extract, 1-10 parts of potato skin extract, 1-10 parts of licorice root extract, 1-5 parts of aloe extract, 1-3 parts of lily extract, 1-10 parts of kudzu root extract, 0.5-3 parts of red bean skin extract, 1-3 parts of cassia bark, 1-15 parts of chinaberry bark, 0.1-1 part of red peanut hull extract, 0.5-5 parts of oat hull extract, 0.1-1 part of ginger extract, 1-3 parts of purple eggplant peel extract, 1-10 parts of corn silk extract, 0.5-2 parts of coix seed powder, 0.1-1 part of rose extract, 0.1-0.5 part of sophora flower extract, 1-3 parts of coreopsis tinctoria flowers and 5-20 parts of honey. The medicament composition has an excellent curing effect on ichthyophthiriasis.

The invention belongs to the technical field of aquaculture disease prevention and treatment, and particularly relates to a technical method for preventing and treating ichthyophthiriasis of culturedfishes by using artificial flow generation and ozone. A relatively closed circulating water culture system is constructed and comprises a breeding area, a sewage collection area and an ozone treatmentarea, wherein water flow with a specific flow speed is manufactured in the breeding area through a water pushing and flow making device; fish bodies are washed through the habit that fish like to push water, ichthyophthirius multifiliis larvae in water are difficult to adhere to the surfaces of the fish bodies, and meanwhile ichthyophthirius multifiliis falling off from diseased fish bodies and sediments containing ichthyophthirius multifiliis at the bottom of a pond are scoured to the sewage collection area. After the water flow enters the ozone treatment area, the ichthyophthirius multifiliis larvae are killed through ozone with a specific concentration, the water body subjected to ozone treatment is pushed to the breeding area again through flow making equipment, the steps are repeated, the density of the ichthyophthirius multifiliis in the water body is continuously reduced, and therefore the purpose of preventing and treating ichthyophthiriasis is achieved. By adopting artificialflow making and ozone pest killing technologies, the technical method has the advantages of greenness and environmental friendliness.

The invention relates to a fish drug for treating fresh water ichthyophthiriasis. The fish drug is prepared by taking, by mass, 14-16 parts of herb of salvinia natans, 8-12 parts of banyan leaves, 5-7 parts of herb of polystichum moupinense (Franch.)Bedd., 1-3 parts of seeds of polygonum hydropiper L. and 1-3 parts of semen lepidii as the main raw materials. The fish drug is significant in ichthyophthiriasis treatment effect, natural and environmentally friendly.

The invention provides a preparation for preventing and treating brown croaker ichthyophthiriasis and a method for preventing and treating brown croaker ichthyophthiriasis by utilizing the same, belonging to the technical field of aquaculture. The preparation is prepared by mixing the following components in parts by volume: 70-100 parts of rice vinegar, 5-30 parts of garlic water and 2-15 parts of tea water, wherein the rice vinegar is edible; the garlic water is juice squeezed by mashing garlic bulbs; and the tea water is the filtrate extracted by mixing black tea with water in a weight ratio of 1:30 for 15 minutes and then filtering the tea water. The preparation is low in cost, is convenient to prepare and safe to use and is a product worthy of large-area promotion.

The invention relates to a traditional Chinese medicinal herbal preparation for treating ichthyophthiriasis of osteoglossum bicirrhosum, and relates to a preparation method of the traditional Chinese medicinal herbal preparation. The preparation is prepared from the following components in parts by mass: 22-34 parts of gleditsia sinensis juice, 15-22 parts of calamus, 15-22 parts of folium artemisiae argyi, 10-18 parts of torilis japonica, 7-12 parts of Pu-erh ripe tea, 10-16 parts of morning glory, 10-16 parts of herba houttuyniae, 8-18 parts of folium isatidis, 12-16 parts of Chinese gall, 12-18 parts of radix bupleuri, 13-16 parts of garlic, 11-16 parts of coptis chinensis, 7-15 parts of astragalus smicus, 7-15 parts of raw ginger, 8-13 parts of cortex phellodendri, 8-13 parts of moutan bark, 9-14 parts of rhizoma kaempferiae, 6-13 parts of fructus cnidii, 6-10 parts of bamboo salt, 5-11 parts of white vinegar and 5-11 parts of peppermint oil. The traditional Chinese medicinal herbal preparation has a high cure rate on the ichthyophthiriasis of osteoglossum bicirrhosum.

The invention relates to a parent breeding method for promoting gonad development of pelteobagrus fulvidraco. The method comprises the following specific operation steps of 1, selection and putting of pelteobagrus fulvidraco parents; 2, physique strengthening before overwintering; 3, arranging of a net cage in the overwintering period; 4, water body fertilizing in the overwintering period; 5, feeding restoring after overwintering; 6, daily management; 7, manufacturing and feeding of hormone feed. According to the method, it is guaranteed that the pelteobagrus fulvidraco parents achieve sexual maturity synchronously 3-4 weeks earlier, so that advanced breeding of the pelteobagrus fulvidraco is realized, and the fry breeding period and the commercial fish breeding period are prolonged. According to the method, by taking the measures that the water draft of the net cage is adjusted, the interior of the net cage is covered with alternanthera philoxeroides in winter and a water body is fertilized, the functions of heat preservation and increase of temperature accumulation of fish bodies are achieved, then initial feeding of the parents is earlier after overwintering, the physique can be restored as soon as possible, and the capacity of resisting diseases such as ichthyophthiriasis is enhanced.

The invention discloses a Chinese herbal medicine compound preparation for preventing and treating chthyophthirius multifilis for fish as well as preparation and application of the Chinese herbal medicine compound preparation, and belongs to the technical field of fish parasite killing medicines. The compound preparation is prepared from the following raw material medicines by weight percentage: 20-40% of radix sophorae flavescentis and 60-80% of radix cynanchi atrati, wherein a preparation method of the compound preparation comprises the following steps: respectively drying and crushing the raw material medicines; screening to obtain dry powder of each raw material medicine; mixing the obtained dry powder of the raw material medicines by weight percentage; adding 95% of ethanol; soaking and extracting for twice to obtain a total extract; decompressing and concentrating the obtained total extract; and drying the obtained extract until the weight is constant, to obtain the Chinese herbal medicine compound preparation for preventing and treating chthyophthirius multifilis for fish. The Chinese herbal medicine compound preparation provided by the invention is easy to decompose, free of residues and safe to environment and people, reduces toxicity of a coarse extract of radix cynanchi atrati, improves efficacy of radix sophorae flavescentis to resist ichthyophthiriasis, greatly reduces cost, is easy to industrial production and promotion, and has broad application prospects in aquatic product.

The invention discloses a Chinese herbal medicine feed additive capable of preventing ichthyophthiriasis of golden trouts and a usage thereof. The Chinese herbal medicine feed additive capable of preventing the ichthyophthiriasis of the golden trouts comprises the following ingredients in parts by weight: 9-13 parts of tasselflower thrumwort leaves, 30-35 parts of cortex meliae, 10-13 parts natant salvinia herb, 8-13 parts of herba hedyotis, 7-12 parts of roots of Chinese pulsatilla, 3-5 parts of wild chrysanthemum, 2-4 parts of semen lepidii, and 1-3 parts of semen raphani. The invention has the following beneficial effects: the additive disclosed by the invention has antiseptic, detoxification and insecticidal effects, and is capable of effectively preventing occurrence of bacterial and viral diseases; and the additive has the functions of expelling and killing ichthyophthirius adults and larvae in the golden trout body so as to improve body immunity of the golden trouts; moreover, the additive is a purely natural substance which is not liable to cause the problems of drug resistance and drug residues after long-term usage. A usage method of the Chinese herbal medicine feed additive capable of preventing the ichthyophthiriasis of the golden trouts disclosed by the invention is capable of rapidly damaging cell walls and cell membranes of Chinese herbal medicines so as to ensure full exposure of active drug components in the cells.

The invention discloses application of sophoraflavanone G in the preparation of drugs for killing ectoparasitic ciliates on fishes and belongs to the technical field of drugs for killing ectoparasitic ciliates on fishes. Sophoraflavanone G is applied for the first time in the preparation of drugs for killing ectoparasites on fishes, particularly for killing Ichthyophthirius multifiis, the ectoparasites are completely killed in an effective dosage range, Ichthyophthiriasis is controlled, and significant control is provided for Ichthyophthiriasis; rich plants contain sophoraflavanone G and are low in price and easy to obtain, no residue or pollution is left, the plants are nontoxic to human, and an extraction and preparation process of sophoraflavanone G is simple and has a promising application prospect. Sophoraflavanone G is has median lethal concentration (46.6 mg / L) for grass carp that is 23.3 times the lowest effective concentration (2m g / L) to control Ichthyophthiriasis, is safe to fishes and has a promising application prospect.

The invention belongs to the field of biological prevention and control, and relates to application of honokiol in preparation of medicines for inhibiting and killing in vitro parasitic ciliates of fish. The invention discloses activity of the honokiol in inhibition of the in vitro parasitic ciliates of the fish, and applies the honokiol to prepare the medicinesthe application of the honokiol in preparation of the medicines for inhibiting and killing the in vitro parasitic ciliates of the fish; the honokiol is especiallyused for inhibiting and killing cryptocaryon irritans brown, the honokiolcan completely inhibit and kill parasites within an effective dose range, and achieves the effect of preventing and controlling seawater ichthyophthiriasis; the honokiol is a natural compound, is little in toxic and side effects and easy to degrade and remove, can avoid the problems such as environmental pollution and drug residue which are caused by abuse of chemicals, and is beneficial to promotepromotion of the sound development of aquaculture industry.

The invention relates to a drug for control of ichthyophthiriasis disease in cage net culture and an application method. The drug for control of ichthyophthiriasis disease in cage net culture comprises the following raw materials by weight: 1-2% of deltamethrin (2.5% deltamethrin missible oil), 10-20% of kerosene and the balance of middle and fine sand with the particle size 0.25-0.50mm. The application method is as follows: after ichthyophthiriasis disease is confirmed, the ichthyophthiriasis disease is treated as follows: spraying the drug one time a day to each net cage net according to the amount of 1kg / 25m<2>, continuously using for one treatment course of 3-7 days, after the treatment course is completed, continuously observing for 3 days, and repeating one treatment course if the ichthyophthiriasis disease is found by microscopic examination. The drug for control of ichthyophthiriasis disease in cage net culture is simple and practical, low in cost and less in use amount, the treatment survival rate on early and middle stage ichthyophthiriasis disease is more than 70%, in especially, the early stage treatment survival rate is more than 90%, the drug has a certain effect on the treatment of serious infected ichthyophthiriasis disease, the survival rate is about 40% by cooperation of disinfection measures, and the effect is obvious.

The invention provides a preparation for preventing and treating brown croaker ichthyophthiriasis and a method for preventing and treating brown croaker ichthyophthiriasis by utilizing the same, belonging to the technical field of aquaculture. The preparation is prepared by mixing the following components in parts by volume: 70-100 parts of rice vinegar, 5-30 parts of garlic water and 2-15 parts of tea water, wherein the rice vinegar is edible; the garlic water is juice squeezed by mashing garlic bulbs; and the tea water is the filtrate extracted by mixing black tea with water in a weight ratio of 1:30 for 15 minutes and then filtering the tea water. The preparation is low in cost, is convenient to prepare and safe to use and is a product worthy of large-area promotion.

The invention relates to a novel traditional Chinese medicine composition for treating fresh water ichthyophthiriasis. The traditional Chinese medicine composition is prepared by taking, by mass, 8-12 parts of seeds of amaranthus caudatus, 8-12 parts of leaves of amaranthus caudatus, 5-7 parts of herb of laportea violacea gagnep., 4-6 parts of bark of white poplar and 1-3 parts of semen lepidii as main raw materials. The traditional Chinese medicine composition is significant in ichthyophthiriasis treating effect, natural and environmentally friendly.

The invention discloses an application of rheum emodin in preparation of drugs for killing in-vitro parasitic ciliates of fish, relates to the technical field of fishery medicines, particularly relates to an application in preparation of drugs for killing ichthyophthirius multifilis, and belongs to the technical field of drugs for killing parasites. The rheum emodin is applied to preparation of drugs for killing in-vitro parasitic ciliates of fish for the first time, and is especially applied to killing ichthyophthirius multifilis. The rheum emodin is obtained from a natural plant, and is free of residue, free of pollution, free of public hazard and nontoxic to a human body, so that the rheum emodin is easily degraded in the environment, one-time killing of the parasites can be achieved within an effective dose range, and the effect of controlling ichthyophthiriasis is achieved. The medial lethal concentration of the rheum emodin on the fish is 17.8 times and 7.0 times of the effective concentration of killing larvae and adults of the ichthyophthirius multifilis separately; and the rheum emodin is safe to the fish within an effective dose range of an insecticide. The rheum emodin is abundant in source, the extraction preparation process is simple, and the rheum emodin has a wide application prospect in development of a novel environment-friendly fishery medicine for controlling the in-vitro parasitic ciliates of the fish.

The invention discloses application of a rosemarinus officinalis extract in preparation of a medicine for preventing and controlling ichthyophthirius multifiliis fouquet, and belongs to the technical field of prevention and control of fishery diseases. According to the invention, the rosemarinus officinalis extract is applied to prevention and control of ichthyophthirius multifiliis fouquet for the first time, and 100% of killing rate of ichthyophthirius multifiliis fouquet can be achieved in an effective dose range. The median lethal concentration of the rosemarinus officinalis extract to goldfish respectively is 28.6 times and 9.4 times of the median effective concentration of the rosemarinus officinalis extract for killing ichthyophthirius multifiliis theront and trophozoite, and the rosemarinus officinalis extract is safe to fish within the effective range of killing insects. Rosemarinus officinalis resources are rich, the preparation process of the rosemarinus officinalis extract is simple, and the rosemarinus officinalis extract has the potential of being developed into a novel green alternative drug for preventing and controlling ichthyophthirius multifiliis fouquet.

The invention discloses application of a Prunus persica bark extract in prevention and treatment of the ichthyophthirius multifiliis disease of freshwater fishes, and belongs to the technical field of fishery disease prevention and treatment. In-vitro insecticidal test results show that the Prunus persica bark extract has a good killing effect for the grazing bodies, the trophozoites and the cysts of ichthyophthirius multifilis and has a dose-effect relationship so as to prove that the Prunus persica bark extract can be used for preventing and treating the ichthyophthirius multifiliis disease of the freshwater fishes by killing the ichthyophthirius multifilis body. The the ichthyophthirius multifiliis disease of freshwater fishes is used as a traditional Chinese medicine in China, and the extract of the peach bark has the characteristics of being safe and non-toxic to a water body environment and aquatic organisms, and has a huge application prospect in the field of novel green fishery medicines.