Aquaculture Lists
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Causes and prevention of bleeding symptoms in conventional fish
In recent years, with the increase of aquaculture density and the deterioration of water environment, the bleeding symptoms of conventional cultured fish are more common, which has caused greater losses to farmers. There are many causes of bleeding symptoms in fish, some caused by viruses, some caused by bacteria, and some caused by feed and environmental stress factors. Because farmers can not correctly diagnose and distinguish, they often cause improper medicine, poor curative effect and even serious consequences of a large number of dead fish. The following causes and prevention methods for fish bleeding are as follows: 1.
2019-01-15 -
Prevention and treatment of common diseases in Pseudosciaena Crocea culture
Benedeniasis [etiology] Benedenidosis is caused by parasitism. [symptoms] Benedenia is often parasitic on the body surface of large yellow croaker, yellowfin sea bream, red sea bream, black sea bream, grouper and other marine fish, especially in the first half of the back. When Benedenia parasites on the fish, the fish are restless in the water, swim crazily, rub against the net or pool wall, tear the epidermis with the size hook of the fixed plate behind the worm, injure and inflame the body surface, and secrete a large amount of mucus. In severe cases, anemia, weight loss, local or large area ulcers on the body surface or appear
2019-01-15 -
A Small Edible Fish with High Economic Value--Plagiognathus microlepis
Microlepis mirabilis, commonly known as Shaguzi, Huangpian, Huangpi, Huangwei Diaozi, etc., is the largest individual in the subfamily Mirabilis. It is a small and medium-sized edible fish widely distributed in rivers and lakes in China. It has high meat content, delicious and tender meat. According to the determination, the internal organs only account for 8%~12% of the body weight, the protein content accounts for 22%, and the fat content accounts for about 2%. It is easy to raise, simple, and has a wide range of food sources. It mainly eats natural food. From the point of view of human consumption, it belongs to a green excellent fish with high economic value.
2019-01-15 -
Fish with scallion oil
Raw materials: 1 live grass carp (weighing about 750 grams) ingredients: salt, soy sauce, cooking wine, sesame oil, green onions, ginger pieces and shredded ginger, shredded green onions, monosodium glutamate, pepper. Practice: 1. Kill grass carp and remove phosphorus, clean chamber, wash, cut both sides of the fish with a word knife, put the fish into the pot, add spring onions, ginger and boil for about 15 minutes, fish out until cooked, put on a fish plate. 2. Sprinkle salt, monosodium glutamate and pepper on the fish, top with shredded onion and ginger, add cooking wine and soy sauce to marinate slightly. 3. Heat the sesame oil in the pot and pour it on the fish.
2019-01-15 -
Shepherd's purse fish roll
[features] the outside is scorched and tender, the fish is delicious and water chestnuts are fragrant. [raw material] 750 grams of yellow croaker. 20 grams of vegetables, 25 grams of leather, 30 grams of shredded pork. 10 grams of spring onions, 15 grams of ginger, 15 grams of egg white, 15 grams of Shaoxing wine, 10 grams of sesame oil, 50 grams of starch, 200 grams of peanut oil, 10 grams of pepper, 5 grams of refined salt. [production process] Pseudosciaena Crocea and pig fat were cut into shreds that were 3.5 cm long and 0.3 cm wide and thick. Shred water chestnut after peeling: wash shepherd's purse
2019-01-15 -
Five points for attention in fish species management in autumn
The water temperature is suitable in autumn, which is the peak season for fish growth. Fish species management should do a good job in the following five tasks. 1. Clear the pond. Transfer the fish to a pond that has been cleaned and sterilized for cultivation. Where there are difficulties in the circulation of water sources and fish ponds, all the fish can be transferred out of the temporary culture, then disinfect the original pond with quicklime 75~100kg per 667m2 of water surface, and fertilize the water quality according to the conventional method, and then return the fish to the fish after the medicine disappears. two。 Separate cultivation. Due to the large size of fish species, large food consumption, strong food grabbing ability, if large and small size fish mixed culture, small fish will
2019-01-15 -
Preliminary judgment on the quality of pellet feed for fish
In recent years, with the increasing popularity of high-yield fish culture, full-price pellet feed for fish has been widely used in fishery production. however, because there are many feed brands in the market, and there are great differences in quality and grade, the majority of farmers are unable to judge its quality. This paper introduces a simple method to judge the quality of fish feed by sense. That is, "one look, two smells, three twists, four bubbles, five chews", which can be used as a reference when choosing and purchasing pellet feed. 1. Look at 1.1 look at the color: fish pellet feeding
2019-01-15 -
Feeding requirements of zebrafish
Zebrafish, also known as blue striped fish, striped fish, blue zebrafish, Indian fish, Indian zebrafish, cyprinid, native to South Asia, India, distributed in Myanmar, Bangladesh, Singapore and other places. Zebrafish is 4-6cm long, spindle-shaped and slightly laterally flattened. Zebrafish has a slightly pointed head and zebra-like stripes, hence the name zebrafish. Its back is olive, the side of the body is covered with several blue stripes from beginning to end, the male fish is dark blue lemon stripes, the female fish is blue silver gray stripes. The iris of zebrafish is yellow and red. zebra
2019-01-15 -
Eight treasures fresh soup fish swallow
The basic materials send out six taels of fish and swallows. Brief introduction of Lentinus edodes, Crab fillet, Jinhua Ham, Meretrix Meretrix, Shrimp Salt, Monosodium glutamate and White Pepper: fish swallow is made from natural fresh sea eel and stuffed with fresh shellfish, abalone head, dried fish and so on. This product is a combination of Fujian capital and Hong Kong and Guangdong flavor, can be called a unique food world! Yuyan series products are very popular in the catering market recently. Because this kind of dishes are easy to operate and sell like generous, and the taste is very delicious, very
2019-01-15 -
How to treat vitamin deficiency in fish
Vitamin A: lack of vitamin An in fish can cause poor vision, dry eye disease, night blindness, skin and eye bleeding, epithelial tissue keratosis, bleeding at the base of the fin, Gill deformity, Gill valve often linked together, tip hypertrophy, abnormal bone development, loss of appetite, slow growth. In view of these symptoms, it is necessary to increase the content of vitamin An in fishing feed, combined with the use of vitamin mixtures. If raising herbivorous and omnivorous fish, you can add and match green feed, carrots and yellow corn in the feed. Vitamins
2019-01-15 -
Matters needing attention in Freshwater Shark Culture in North China
Freshwater sharks are mainly distributed in Southeast Asia. According to body color, freshwater sharks can be divided into four types: black shark, white shark, gray shark and red shark. The sharks of the first three body colors are mostly raised as edible fish, with gray sharks growing the fastest, and red sharks also known as crystal Pattinus. In the juvenile stage, they are mostly raised as ornamental fish. The freshwater shark is a tropical fish with an optimum growth temperature of 20 ℃ and an optimum water temperature of 22 ℃. The freshwater shark has a weak tolerance to low temperature. When the water temperature drops below 18 ℃, the food intake and activity of the fish decrease obviously, and the water temperature decreases obviously.
2019-01-15 -
Several commonly used green and environmentally friendly fishery drugs
Although quicklime and salt are not special fishery drugs, they are effective in preventing and controlling aquatic diseases, and do not pose a threat to the environment, and there is no problem of drug residues. Sprinkling quicklime into the aquaculture water regularly can not only reduce the occurrence of many diseases, but also provide the necessary calcium elements for cultured organisms, which is particularly important for crustacean aquaculture. Usage: choose quicklime without weathering, clean and disinfect the pond with 150 Mu of 200 kg per mu, and generally use it once every 20 days to prevent and control diseases.
2019-01-15 -
Moldy fish eggs
[prevention] 1. A few drops of gentamicin or malachite green drops in the incubator can effectively prevent the mildew of fish eggs. two。 Suck the white fish eggs with a straw in time to prevent them from spreading. 3. Improve the quality of the water used for hatching, such as raising the water temperature or using circulating water filtration equipment to shorten the hatching time of fish eggs and reduce the chance of being infected by mold.
2019-01-15 -
Golden butterfly shrimp
Wash and peel the shrimp and split it, leaving the last section of the shrimp tail. Beat the flour, bread crumbs and eggs well. Wrap the shrimp in the order of eggs-flour-bread crumbs. Heat the oil in the pan until 60% hot, then deep-fry and serve. It does look good!
2019-01-15 -
Silverfish in white sauce
1, raw materials: 250 grams of fresh silverfish, 2 grams of chopped onions, 5 grams of ginger juice, 25 grams of flour, 15 grams of water chestnut powder, 30 grams of milk, 150 grams of chicken soup 2, practice: silverfish go to the eyes to wash and dry, stick to the flour. Thicken the water chestnut powder with milk. Put the silverfish in 60% hot oil and remove for 10 seconds. Put the oil pan over high heat, sprinkle with chopped onions, add a little Shaoxing rice wine and chicken soup, add silverfish and seasoning, bring to a boil and simmer for 10 minutes. Add milk, water chestnut and thicken, pour into the plate and serve.
2019-01-15 -
Mixed culture of soft-shelled turtle and fish
The mixed culture of soft-shelled turtle and fish is a way of raising soft-shelled turtle and fish. The experiment shows that the benefit of mixed culture of soft-shelled turtle and fish is twice or even several times higher than that of other mixed culture methods. The following is a brief description of its animal learning and breeding methods as follows. 1 the zoological principle of mixed culture of soft-shelled turtles and fish refers to the mixed culture of soft-shelled turtles and fish in the same pond. From the point of view of zoology, the mixed culture of soft-shelled turtle and fish can not only make full use of the biological cycle of water body, but also maintain the dynamic balance of water ecosystem.
2019-01-15 -
A New method of Preservation and Preservation of Fish
Fresh fish has a new method of anticorrosion, Moscow Meat and Milk Industry Research Institute of Russia has developed the use of glycerol spraying method to prolong the preservation time, so that the stored fresh fish to maintain the original flavor. The new technology of glycerol spraying is formulated as follows: glycerol 1% Mel 20%, hydroxyethylamide 0.15% Mel 0.3%, sorbic acid 1% Mel 5%, polyvinyl alcohol 0.3% Mel 30%, and the rest is water. Spraying the preservative on the fish can slow down the oxidation and realize long-term fresh-keeping.
2019-01-15 -
New processing technology of hairy shrimp
Hairy shrimp, that is, Chinese hairy shrimp, also known as small white shrimp, water shrimp, crustacean, cherry shrimp family, side flat, thin crustacean. The body length is usually 2.5-4 cm. The frontal angle is short, the side is slightly triangular, the lower margin is oblique and slightly curved, the upper margin has two teeth, the caudal segment is very short, the end is round, unarmed, and the posterior half and terminal margin of the lateral margin are feathery. The first three pairs of feet are slightly pincer-like, and the last two pairs are completely degraded. The body was colorless and transparent, only the mouthparts and the second touch whip were red, the ventral surface of the sixth ventral segment was slightly red, and there were 3-8 red spots at the base of the inner limb of the caudal limb. Live in
2019-01-15 -
Propagation of Ophiocephalus Argus
Ophiocephalus Argus is commonly known as catfish, because of its high meat content, delicious meat and rich nutrition, the market is in short supply, and the supply of seedlings has become the main factor affecting the breeding of Ophiocephalus Argus. 1. The selection of parent fish can be purchased from the market or from naturally caught parent fish to select 2-3 winter individuals with strong physique, disease-free and injury-free, requiring more than 100 grams for females and more than 150 grams for males. two。 The pond for breeding parent fish requires a flat bottom with an area of 1 mu (1 mu = 667 mu).
2019-01-15 -
Techniques of cultivating silver carp and bighead carp fingerling in cage with small and medium-sized reservoirs as provenance base
As the main drinking water source in Beijing, Miyun Reservoir plays an important role in the economic development and social stability of the capital. In order to scientifically transform nutrients and aquatic organisms in the water body of Miyun Reservoir, purify water quality, and protect the "water of life" in the capital, the Miyun county government increased the amount of fish species after abolishing cage fish culture. every year, 485000 kilograms of silver carp, bighead carp, bream, grass and other fish species are released to the Miyun Reservoir, which aims to reduce the nutritional load of the water body through fishery production. But
2019-01-15