Aquaculture Lists
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Common diseases and prevention of salmon and trout
Salmon and trout are the main cold-water fishes in the world, which are generally cultured in intensive and intensive way, so all kinds of fish diseases are easy to prevail, including viral fish disease, bacterial and fungal fish disease and parasitic fish disease. 1. Viral diseases. The pathogen of infectious pancreatic necrosis is infectious pancreatic necrosis virus. Vertical transmission: eggs and semen of infected parent fish; horizontal transmission: feces, urine and secretions of diseased fish bring the virus into the water
2019-01-16 -
The correct method of medication for fish
The main drugs used to prevent and treat fish diseases are halogens (bleach, sodium chloride, iodine, etc.), heavy metal salts (copper sulfate and ferrous sulfate, copper chloride, potassium dichromate, etc.), sulfonamides (sulfadiazine, sulfathiazole, sulfadiazine, etc.), furans (furacilin, furazolidone, etc.), organophosphorus insecticides (trichlorfon, etc.), antibiotics (penicillin, streptomycin, chloramphenicol, chlortetracycline, etc.) Oxytetracycline, erythromycin, etc.), Chinese herbal medicine (, garlic, magnolia, iron amaranth, etc.) To
2019-01-16 -
Cooking techniques of characteristic garlic prawns
Shrimp can enjoy the delicacy of shrimp in a variety of cooking methods, such as braising, beauty, and so on. Sea shrimp meat is more fresh and sweet, used to be extremely beautiful, the feeling is "a mouthful of crisp", with nine-story tower, too fragrant. Nine layers of Tameiji sea shrimp, using chilled sea shrimp. It's not very big, so it's suitable to be beautiful. (preferably remove the shrimp intestines) remove the shrimp head, pour oil into the pan, fry the shrimp until crisp, stir-fry the garlic and chili, stir-fry with soy sauce, and finally add the nine-story tower to stir-fry. Meiji sea shrimp tastes crisp when it is cold.
2019-01-16 -
Intestinal mycosis of fish
The pathogens are zygomycetes, insect molds, frog faeces and frog feces. The anterior abdomen and anus of the diseased fish obviously swelled, forming two white protruding places. The diseased fish could not defecate because of anal blockage and died soon. The abdominal wall soon wore out after death, revealing sticky internal organs. Anatomical examination of the diseased fish showed that there was a white sticky fatty substance outside the stomach and intestine, the intestine became thicker and white, the intestinal wall became thinner, the interior was full of hyphae and its conidia, the end of the intestine was particularly dense, and mycelia were also distributed in the stomach of a few diseased fish, but no infection was found.
2019-01-16 -
Skills for distinguishing the quality of fish
The quality of pellet feed for fish is closely related to the benefit of culture, which should be paid close attention to. Its quality is mainly judged by five aspects, such as "one look, two smells, three twists, four bubbles, five chews" and so on. it is introduced as follows: first, fish pellet feed is made by evenly mixing several main raw materials, such as fish meal, soybean meal, cottonseed meal, rapeseed meal, secondary powder, meat and bone meal, etc. If there are more fishmeal and soybean meal, the material color is slightly yellow; when there are more miscellaneous meal, the material color is dark red; when there is more secondary powder, the material color is slightly gray, and so on.
2019-01-16 -
Seminar on certification of pollution-free fishery products
At the 2007 national seminar on certification of pollution-free fishery products held in Shenyang, Liaoning Province, the head of the Fisheries Sub-Center of the Agricultural products quality and Safety Center of the Ministry of Agriculture said: at present, the certification rate of fishery products in China (annual output of certified products / annual output of aquatic products) is still very low, especially in major fishery provinces with an annual output of more than 1 million tons. China is a large fishery production country, in order to adapt to the consumption trend of fishery products at home and abroad and ensure the quality of fishery products.
2019-01-16 -
Using new technology to raise fattening shrimp
Xu Zhihua, a shrimp farmer in Fengma Yi Village, Hengli Town, Nansha District, Guangzhou City, contracted 60 mu of pond to raise Penaeus vannamei. In 2007, under the guidance of agricultural technicians, he used enzyme technology and fish and shrimp fertilizer, and achieved a net income of 5000 yuan per mu. Xu Zhihua carried out comparative experiments in two ponds. The No. 1 pond was sprinkled with enzyme bacteria, fertilized and watered with fish and shrimp, and 50,000 shrimp fry were released per mu. He applied sparingly and did not use water purifying agent or germicidal agents throughout the process, but there was no phenomenon of floating head and dead shrimp, and the shrimp survived.
2019-01-16 -
Braised bean curd with yellow croaker
Raw materials: 1 yellow croaker, 500 grams of tofu, 25 grams of Auricularia auricula, green cabbage heart, green onions, ginger slices, salt, monosodium glutamate, peanut oil, cooking wine. Production: ① will kill the fish, remove scales, gills and internal organs, use oblique knives on both sides of the fish body, wash tofu and cut thick slices, rinse fungus and green vegetable heart. Heat ② wok with oil, add spring onions, ginger slices, fry fish on both sides, add fresh soup, cooking wine, salt, remove floating foam after boiling, add tofu and fungus, cook with slow heat, add green vegetable heart and flavor.
2019-01-16 -
Prevention and control of the third generation of fish disease
The pathogens and epidemic fish third-generation disease are medium-sized third-generation worm, bacterial third-generation worm and beautiful third-generation worm. The disease is mainly prevalent in spring, late autumn and early winter, and the excessive density of pond culture is the main cause of fish disease. Symptoms of the diseased fish skin has a layer of gray-white mucous membrane, thin. At the beginning of the disease, he was extremely uneasy, sometimes he swam wildly, and sometimes he swam sharply on the side. Rub in the grass or at the edge of the cylinder in an attempt to get rid of pathogens. Then he lost his appetite, swam slowly, and finally died. Prevention and control methods 1. When
2019-01-16 -
Quick-freezing Technology of Shrimp for Export
1. Process raw material acceptance → raw material storage → raw material thawing → peeling shrimp → acceptance → cleaning → soaking → green → cooling → sub-specification → frozen → package ice → metal detection → box → refrigerated transportation 2, operation points 2.1 raw material acceptance QC (quality control team) should check the quality to prevent black shrimp. If you find black shrimp, you should timely feedback to the importer to deal with. And make the "raw material acceptance record" of each batch of raw materials. 2.2 Raw material storage is stored according to the container batch number, in
2019-01-16 -
Misgurnus anguillicaudatus
Common name: the origin and delivery period of Misgurnus anguillicaudatus: distributed in the Yuanjiang River system. Introduction: the head is slightly flat and the cheek is bulging. Lips are smooth or wrinkled. The maxillary tooth protuberance is weak, and the mandible has a V-shaped notch in the center of the mandible, but sometimes it is not obvious. The body scales are small and distributed only after the starting point of the dorsal fin. The side line is complete. There are only spots on the back of the head of small individuals, while there are spots or markings on the cheeks of large individuals. Demersal fish inhabit the sand-gravel section of the river where the current is fast. A larger individual
2019-01-16 -
Beware of four diseases in raising money turtles
In the process of raising money turtles, due to the deterioration of pond water, high stocking density, mixed culture of large and small turtles, improper bait, freezing injury and summer injury and other reasons, the turtles often get sick or die. Now the money tortoise is easy to occur four diseases and prevention and treatment methods are introduced as follows: first, the symptoms of red neck disease: the disease mostly occurs in the plum rain season. The diseased tortoise has red spots on the abdomen, swollen throat and neck, elongated neck that cannot be retracted, loss of appetite and slow response. When the condition is serious, nosebleed, intestinal inflammation and erosion, redness and swelling of the whole body, no
2019-01-16 -
Rice cooker with shrimp
[raw material] 3 taels of rice, 3 taels of shrimp, 2 heads of rape, right amount of ham, 1 tablespoon wine, half tablespoon drum mill, several slices of ginger, a little half teaspoon of light soy sauce, salt, ancient moon flour, and a little spring onions. [production process] ① first cook rice in a rice pot; ② add 2 tablespoons of oil, saute ginger, spring onions, shrimp, rape and sliced ham, add seasoning and bring to a boil, shovel and place on the boiled rice. Stir prawns, vegetables and rice, cook for a while, boil the original pot and serve.
2019-01-16 -
Soft-shelled turtle reared with cottonseed shell
If there is no place where bees are raised, soft-shelled turtles can be raised according to the principle of cottonseed shell fermentation. The method is simple and simple, and is briefly introduced as follows. Use a cylinder with a diameter of 30 cm, in which the prepared cottonseed shell is pressed and put into a small basin with a diameter of 20 cm. In the small basin, a layer of humidity is put into the loose soil suitable for the growth of small turtles, and then the small soft-shelled turtles are put into the basin and some feed is put on them. Feed for small soft-shelled turtles, and the cylinder mouth can be tightly covered with old cotton wool. The blending method of cottonseed shell: generally according to the required temperature.
2019-01-16 -
Raising grass silver carp in cages in reservoir
The so-called "reservoir cage set box" is to set up four small cages in a large cage. "raising grass carp on top and raising silver carp below" means raising grass carp in small cages and raising silver carp in the upper and lower layers of small cages and large cages (5m in height of small cages, 5.5m in height of large cages and 0.5m in interlayer height). Grass carp in small cages are fed with pellet feed for high-density intensive culture, while silver carp in large cages mainly use grass carp stool and leaking feed as bait, not special bait, for grazing type sparse and rough breeding. This kind of culture model
2019-01-16 -
Matters needing attention in production management of freshwater aquaculture in overwintering stage
Matters needing attention in production management of freshwater aquaculture in overwintering stage
2019-01-16 -
Technical points of "recommended Goose raising" to improve Economic benefit
Technical points of "recommended Goose raising" to improve Economic benefit
2019-01-16 -
Precautions for livestock vaccination to prevent side effects
Precautions for livestock vaccination to prevent side effects
2019-01-16 -
Symptoms and treatment of rabbit brucellosis
There are two common clinical types of brucellosis in rabbits: 1. Rhinitis: in most cases, the nasal mucosa is congested and exudes a large amount of serous or mucous secretions, which usually does not become purulent. 2. Bronchitis: it is characterized by long-term rhinitis, mucus or purulent secretions from the nasal cavity, sneezing, accelerated breathing, loss of appetite, and gradual weight loss, and the course of the disease can be extended to several months. When the disease occurs in the treatment, the diseased rabbits should be isolated in time and the following drugs should be selected for treatment. Kanamycin, each
2019-01-16 -
Poisoning of organic nitrate compounds in rabbits
The disease is caused by rabbits accidentally eating vegetables, cereals, plant seeds or field weeds that have used organophosphorus pesticides, and improper use of drugs in the treatment of external parasites. Organophosphorus compounds include trichlorfon, dichlorvos, 1605, 1059, 3911, dimethoate, marathon, Erqinong and so on. 1. Clinical symptoms: symptoms appear within 0.5-4 hours after exposure to poison, showing no eating, salivation, tears, pupil narrowing, rapid heartbeat, shortness of breath, muscle tremor all over the body.
2019-01-16