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Remedial and Management Measures for Fishery Production After a Disaster
Recently, in some areas of our province, continuous heavy rains caused many aquaculture ponds to overflow and fish to escape, bringing relatively large losses to farmers. Doing a good job of remedial and management work for fishery production after the disaster has become an important task for aquaculture farmers at present. Based on years of experience in fishery work, the author proposes the following measures for the reference of the broad community of farmers. 1. Remedial measures for fishery production after a disaster. 1. Surround the fish pond with netting. When floodwaters recede, surround the fish pond with netting at the appropriate time to prevent fish in the pond from continuing to escape, thereby reducing losses. 2. Restock fry and fingerlings
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What is the most appropriate energy-to-protein ratio for fish feed?
Since the first requirement of fish in taking in nutrients is to meet their energy needs, from the perspective of fish nutrition, energy is the foundation of fish feed quality. The energy in feed is the sum of the energy contained in the three major nutrients in the feed - protein, fat, and carbohydrates. As a nutrient, protein is not only a major energy-supplying substance, but also has extremely important physiological functions, and these physiological functions cannot be replaced by fat and carbohydrates, and fish have a particularly high demand for protein, so protein is
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Introduction to Common Drugs for Farmed Fish, Part Two
This article continues to introduce the commonly used disinfecting and sterilizing drugs bleaching powder concentrate, dichloroisocyanurate, trichloroisocyanurate and chlorine dioxide. (2) Bleaching powder concentrate [Properties] Bleaching powder concentrate is a white powder with a chlorine odor, easily soluble in water with a small amount of sediment. It contains few impurities. It is relatively stable and not easily decomposed by moisture. Its aqueous solution is alkaline. The active ingredient of bleaching powder concentrate is the same as that of bleaching powder, with available chlorine content reaching 60-65%, more than twice that of bleaching powder. [Action] Bleaching powder concentrate is also a broad-spectrum disinfectant, with the same mechanism of action as bleaching powder. It also produces
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Home-style Method and Tips for Steamed Wuchang Fish
[Dish flavor]Fresh and savory [Ingredients involved]Fish [Characteristics]1. "Wuchang fish" refers to freshwater fish produced in the Wuchang area. Varieties include bream, chub, grass carp, silver carp, etc., among which the Fankou bream produced in Liangzi Lake in Wuchang is the most precious. Fankou bream also includes varieties such as Changchun bream, triangular bream and blunt-snout bream, among which the blunt-snout bream is unique to Wuchang. 2. "Wuchang fish" had already won fame north and south of the Yangtze River as early as more than 1700 years ago during the Three Kingdoms period. The most renowned is Wuchang Dazhonghua Restaurant. Representative
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Soft-Fried Fish
Ingredients: 150 g cleaned fish fillet, 15 g chopped scallion, 15 g chopped ginger, 10 ml Shaoxing wine, 2 g refined salt, 3 g MSG, 3 g sesame oil, 50 g old sourdough starter, 100 g dry flour. Method: (1) Cut the fish fillet into large slices three-tenths thick, then cut into strips two cun long and three fen square, put them in a bowl, add the chopped scallion, chopped ginger, Shaoxing wine, refined salt, MSG and sesame oil, and marinate well; (2) Put the old sourdough starter in a bowl, dilute it with water, add the dry flour and an appropriate amount of clear water, stir into a thick batter, and ferment at 30 degrees Celsius. When the batter has risen
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How to Make Delicious Fish Head and Tofu Soup with Sheet Jelly Noodles
Cuisine: Sichuan cuisine. Ingredients: 2 fish heads, 50 g each of shiitake mushrooms and winter bamboo shoots, 100 g tofu. Instructions: First deep-fry the fish heads briefly; then add a little doubanjiang (fermented broad bean paste), scallions, ginger, and minced garlic, add broth and bring to a boil, then skim off the solids, add the shiitake mushrooms, sliced winter bamboo shoots, tofu, soy sauce, salt, MSG, pepper, and cooking wine; once the fish heads are cooked, add the sheet jelly noodles, and when the soup comes to a boil, thicken with a cornstarch slurry and sprinkle with green garlic. That's it.
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Detailed Explanation of Key Techniques for Autumn Fish Fingerling Rearing
Autumn water temperature generally fluctuates between 20°C and 30°C, making it a good period for fish growth. It is especially the fattening season for smaller, weaker fingerlings, so farmers must effectively strengthen fingerling rearing. Disinfect and clear the pond. For old fish ponds converted to new ponds for fingerling rearing, after several months of rearing in spring and summer, water quality gradually deteriorates, dissolved oxygen and natural food organisms decrease, and pathogenic microorganisms increase, which can stunt fingerling growth. Grass carp fingerlings in particular are more prone to disease in such old ponds. At this time
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Detailed Explanation of Systematic Prevention Methods for Fish and Shrimp Diseases
Systematic prevention of fish and shrimp diseases refers to taking preventive measures from the fry stocking stage until before the adult fish are harvested, consistently controlling the occurrence and development of fish diseases. The occurrence of fish and shrimp diseases is the result of the combined action of the organism and external factors, among which infection by pathogenic microorganisms is an important factor leading to fish and shrimp disease. Since the aquaculture water environment contains pathogenic microorganisms such as viruses, bacteria, fungi, and parasites, once the environment deteriorates and the resistance of the fish and shrimp organism declines, pathogenic microorganisms will massively invade the fish body, causing disease outbreaks. There
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What measures can improve the efficacy of fish medications
Because fish medications are used in an aquatic environment, there are many limiting factors, and it is often difficult to achieve the ideal effect. To improve the effectiveness of medication, attention must be paid to application techniques. 1. Choice between external and internal medications. When disease occurs in a fish pond, the disease must first be diagnosed accurately and quickly. For common bacterial diseases such as red skin disease, gill rot, and white skin disease, external medications applied by splashing are preferable; calculate the water volume accurately and splash the whole pond continuously 1 to 2 times. For diseases such as enteritis and liver disease, internal medications are more effective. When parasitic diseases are found, internal and external medications should be used together; before using internal medications, first apply an external water disinfectant and bactericide once.
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Detailed Explanation of Summer-Fry Rearing Techniques for Jiang Yellow Catfish
1. Pond Conditions The pond area should preferably be 1-3 mu, with a water depth of 1.0-1.5 m, rectangular, oriented east-west. The bottom silt should not exceed 10 cm, the pond embankment should be firm and not leak, and its height should exceed the highest water level by 0.3-0.5 m. The pond bottom should be flat and sloped toward the drainage outlet, with ample water supply and convenient water intake and drainage. 2. Preparation Before Fry and Fingerling Stocking 20-30 days before fry stocking, drain the pond water and sun-dry the pond, remove weeds and debris from the pond, and clean up the bottom silt. About 15 days before stocking, add water
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