Aquaculture Lists
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Smoking and roasting of fish
1. to smoke fish. The raw materials of smoked fish are mostly herring, grass carp and other medium-sized fish, but also common carp, silver carp, Pomfret and other fish. It is processed into delicious convenience food. The manufacturing method is as follows: ① cutting. After selecting the fish, wash it with clean water, scrape off the fish scales, cut off the fins, cut open the abdomen, and remove the internal organs. But do not dig the gallbladder, so as not to cause meat bitterness, then use hot water to rinse the cloth, wipe off the blood stains and black membranes in the abdominal cavity, and then cut open the fish head to make the fish body into a sheet. For larger herring, after the head is removed,
2019-01-16 -
Key points of breeding parent fish in spring
After the beginning of spring, the water temperature gradually increased, especially in the prenatal stage from March to April, the fish activity strengthened, developed rapidly, and the food intake also increased. This stage is an important period of gonadal development of parent fish. Practice has proved that the cultivation of parent fish in spring is the key to the success or failure of artificial reproduction of domestic fish, so we must pay attention to the following points: first, bait grass parent fish mainly feed grass and concentrate. According to the source of the grass, the grass is usually fed on a fixed table in the morning and concentrate in the afternoon. Early spring green feeding
2019-01-16 -
Prevention and Control of Common Diseases of Tanglouse
1. Chrysalis disease: A large number of Chrysalis (insects that are difficult to observe with the naked eye) attach to gills, destroy gills, affect respiration, and suffocate fry. Prevention and control methods: ① 0.5 grams of copper sulfate and 0.2 grams of ferrous sulfate per cubic meter of water (0.7 grams of copper sulfate can also be used alone) dissolved in warm water at 40 - 50℃ and then splashed in the whole pool. (2) Sprinkle 0.5g dissolved water containing 50% diethamine into every cubic meter of water. Second and third generation worms and ring worm disease: these two worms attach a large number of gills and secrete a large number of mucus to hinder
2019-01-16 -
Key points of adult fish management after autumn
After autumn, the water temperature begins to drop, and fish eat gradually, which is also the golden period for fish production and growth. Management should be strengthened. Specifically, the following points should be mastered: First, strengthen feeding. At this time, feeding should be based on concentrate, focusing on the fattening of fish at the bottom. At the same time, attention should be paid to the variety matching of concentrate and coarse feed to ensure that fish feed nutrition is full and comprehensive. Grass carp should be properly fed grass, herring should be fed snail feed, etc. Silver carp should also be properly fertilized. After autumn, the amount of fertilizer should be applied less frequently, and inorganic fertilizer should be the main fertilizer.
2019-01-16 -
Coral reef fish disease
Signs of infection fish may rub on hard objects, careful examination, may find fish skin fog, Gill may be inflamed, the affected fish show typical rapid Gill movement. Many species of marine fish have been found to suffer from the disease. Infection details Oodiniumocellatum is a parasitic single-celled organism called dinoflagellate. A careful examination of it requires a microscope with a magnification of 3000 times. Oodiniumocellatum vs.
2019-01-16 -
Spawning technology of parent fish of cultured turbot
Turbot is found in coastal waters from the Mediterranean to Norway. Turbot is a valuable farmed fish in Europe. Turbot culture has developed continuously in the past 10 years. The production of turbot culture increased from 150t in 1985 to 3700 t in 1998. In the Atlantic coastal waters, turbot reproduces naturally in summer, but it may reproduce all year round by artificially controlling the light cycle and water temperature, or only by controlling the light cycle. Turbot spawned in batches and spawned as many as 10 times during the breeding period. Under the conditions of reception
2019-01-16 -
The method of domesticating fish quickly on the bait table
In recent years, with the continuous improvement of fish culture technology, the method of raising fish with full-price pellet feed has been gradually popularized and applied. However, because many fish farmers are unable to feed and domesticate, the domesticated fish can not get on the bait table for a long time, which not only affects the feeding, delays the growth, but also increases the labor cost and affects the breeding benefit. The two simple and easy domestication methods summarized in our production practice are introduced as follows. 1. The bait hanging bag domestication method can be made by using large-eye window screen (whichever is not leaking).
2019-01-16 -
Reproduction and breeding of goldfish
Morphological characteristics of goldfish also known as Baiyunshan fish, Tang fish, red tail fish, color goldfish, Cyprinidae is native to Guangdong, China. The goldfish was first found in Baiyun Mountain in the northern suburb of Guangzhou City, Guangdong Province, China, so it is called Baiyun Mountain Fish. The goldfish is about 3-4 cm long and has a spindle-shaped body, slender body, slightly flattened side, small head, large eyes and blunt round kiss. The back of the fish is tea-brown, slightly bluish, the abdomen is silvery white, the dorsal and caudal fins are bright red, the ventral fin tip is yellow, and the middle of the tail is also red. From the kissing end
2019-01-16 -
Pond fish "raising in winter" has many advantages.
Guangdong Province is located in the tropics and subtropics, and is rich in water and heat resources. in Guangzhou, the annual average temperature is more than 23 ℃, and the coldest January average temperature is still about 13 ℃. This natural advantage is very beneficial to catch pond fish "raising in winter". Practice in various places has proved that "winter culture" of pond fish has many advantages: first, the cold water temperature is low, the organic matter and fertilizer in the fish pond decompose slowly, the pond water is fresh and oxygen is sufficient, which is conducive to the rapid growth of pond fish; second, because of the cold weather, the bacteria and parasites in the pond are not easy to reproduce and grow, and the pond fish
2019-01-16 -
On the mixed culture of clown fish
Clown fish belong to the parsley family, and their personalities are grumpy, especially they are very hostile to the same kind of fish in the new lower tank. There is no problem with mixed culture, but there must be the following conditions: 1. Several fish should be put into the tank at the same time, the time interval should be shortened as much as possible, and the small fish should be put down first and then the big fish should be put down. two。 There are more sea anemones (carpets) in the tank, and three kinds of fish need at least three sea anemones (carpets). 3. The cylinder block should be large enough and the sea anemone (carpet) should be evenly dispersed. The above three just try to avoid fighting between them, but they can't.
2019-01-16 -
Processing technology of shark fin
Shark fin is made from the front of the lower lobe of shark's dorsal fin, pectoral fin and caudal fin. It has rich nutritional value and has the functions of tonifying blood, qi, kidney, lung and stomach. In order to further standardize the processing technology of shark fin, this paper introduces the technology of processing fresh shark fin into bright fin. 1. Technological process: frozen shark fin → thawing → drying → de-basal meat → hot sand → sand scraping → washing → bleaching → washing → bone removal → drying or drying → graded → packaging → wing products. Second, the operation method 1. Drying: placing in
2019-01-16 -
Steamed dace balls with three fresh dishes
The so-called "three delicacies", towel gourd, chicken leg mushroom, cloud ear also, after blending with the taste of mud carp, it can set off its fresh sweetness, making this dish clear but not light, fresh but not vulgar. Materials: mud carp, towel gourd, chicken leg mushroom, water hair cloud ear, chopped onion, chopped bacon, shrimp, cornflour, pepper, chicken powder and so on. Practice: 1, first, the mud carp meat, leaving the whole head, bone, tail, spare. 2. Cut the mud carp meat into thin slices and put the right amount of cornflour, salt and pepper into the fish meat to mix the chopped onions and wax.
2019-01-16 -
Fish bream disease in fragrant fish culture
The pathogen is fish fish. The symptoms of the disease are parasitic on the body surface and gills of the fragrant fish, absorbing the blood of the fragrant fish and making the fish lose weight gradually. The fish fish stabs the fish's skin with mouth thorns and jaws while feeding, causing many wounds and then being infected with microbes and causing death. Prevention and treatment of ① before stocking, fish ponds were cleaned with quicklime to kill adults, larvae and eggs in the water. ② was bathed in 30ppm formalin diluent for 12 hours for 3 days. ③ uses trichlorfon 0.
2019-01-16 -
Viral disease: wild swimming disease of eel
[pathogen] Anguilla Anguilla (Anguilla Anguilla) is also known as crazy running disease, faint head disease and so on. The pathogen is eel coronavirus. [symptoms and pathological changes] the diseased eel first appeared abnormal grazing, then stopped feeding and swam alone, then sank into the water after struggling on the surface for a while, then floated for a struggling swim, opened its mouth to breathe, and gathered feebly in the sewage outlet until death. The diseased eel has muscle spasm, twisted body, enlarged liver area, hyperemia of fins and chest. Autopsy showed that the liver was enlarged and the liver, kidney and heart were severely congested and bleeding. [epidemic situation] Anguilla Anguilla
2019-01-16 -
Guidelines for the use of pollution-free fishery drugs
Although fishery drugs can treat the diseases of farmed fish, shrimp and crabs, because aquatic products will eventually be put on the table of the people, so the safety of drugs used for disease prevention and treatment must be paid attention to. In order to prevent harmful substances contained in aquatic products from harming human health, the Food Hygiene Law stipulates that aquatic products such as fish, shrimp and crabs shall not contain antibiotics or synthetic antimicrobial agents or other substances harmful to human health. In order to prevent drug residues, it is necessary to understand the correct method of drug use and drug withdrawal period. The relevant state departments have promulgated the "pollution-free Food"
2019-01-16 -
Problems in the black larval stage of Japanese eel and its countermeasures
At the turn of spring and summer, Japanese eel culture is mostly in the black larval stage, which generally reflects the decline of feeding rate, prone to rotten Gill, rotten tail syndrome and other phenomena, which seriously affect the healthy, sustained and steady development of Japanese eel culture. This paper analyzes the main problems existing in the culture stage of Japanese eel black larvae, and puts forward some countermeasures for reference. First, the feeding rate decreased: the feeding rate decreased or the feeding amount was difficult to increase in the culture of Japanese eel black larvae, and the main inducing factors
2019-01-16 -
Practical techniques for Culture of Bamboo shoot Shell Fish
Bamboo shoot shell fish, known as brown pond snakehead or sharp pond snakehead, is a warm water economic fish, mainly produced in Cambodia, Thailand, Vietnam and other countries, commonly known as bamboo shoot shell fish in Guangdong and South China. The largest body length is 60cm, which weighs up to 5--6kg. The tail weight 0.3kg reaches the commodity specification. Thai bamboo shoot shell fish belongs to the suborder goby, carnivorous, benthic and cave-dwelling fishes, photophobic and often hidden in stone crevices and caves. The color of the body surface will change with the surrounding water quality and environment. Under natural conditions, the main food is small fish and shrimp. The range of culture water temperature is 15 ℃ 33 min.
2019-01-16 -
Experiment on culture of sampan fish in cement pond
1 Materials and methods 1.1 sources of experimental fish on May 12, 2001, sampan fish were shipped from Indonesia and transferred through Malaysia, and arrived at the test site at 5 pm on the 14th. 3000 test fry were transported with oxygen in 6 bags and 3 boxes in live water bags. Upon arrival, only 1380 fry survived and the survival rate was only 46%. The fry put in the fry pond died one after another in the second and third days, and only more than 500 survived because the transportation time was too long. Death caused by carbon dioxide poisoning. 1.
2019-01-16 -
Breeding method of yellow edge box tortoise
To raise yellow edge box turtles, it is best to buy turtles from April to August every year, during which the number of turtles is large, the price is low, and it is suitable for domestication and breeding. During the period from January to March, the tortoise is hibernating or about to hibernate, so it is difficult to observe the turtle's activity, food, feces and so on. It is difficult to grasp the survival rate of turtles. The source of adult yellow box turtles mainly depends on the acquisition of wild turtles. Wild turtles are thin, timid and have many wrinkled skin on their limbs. Turtles can be selected from the appearance and feces of the turtles. Healthy turtles have bright eyes.
2019-01-16 -
Feed shrimp 80% full body and save money
According to the practice of shrimp culture, if we feed less and more meals in the process of shrimp culture and stop feeding 1 to 2 tons of feed every 7-10 days, not only the healthy growth and normal weight gain of shrimp can be made, but also the feed cost can be saved. Feed less and raise shrimp more often. Feeding less and eating more refers to changing the original 4 meals a day into 5-6 meals. Although the number of daily feeding has increased, the amount of feed each time has been relatively reduced, and the feed that used to be eaten in 1.5 hours can now be eaten up in 1 hour. Its advantages are: first, the feed is in the water.
2019-01-16