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Fish Disease Prevention Is More Important Than Treatment: Detailed Explanation of Prevention Methods and Measures
Fish Disease Prevention and Control: Prevention Is More Important Than Treatment - Methods and Measures for Fish Disease Prevention
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Salted dried fish
Salted dried fish made from Chinese herring has a unique flavor and is very popular among the people. In today's era of strong freezing capacity, some coastal areas still process salted products. The methods of processing salted dried fish vary from place to place. Zhejiang's Sanbao xiang, Fujian's enzyme-flavored xiang, and Shandong's salted dried xiang all enjoy high reputations. Their processing methods are introduced separately as follows: 1. Sanbao xiang: Chinese herring xiang that has been salted three times is called Sanbao xiang in the Zhoushan area. This is a relatively traditional processing method. (1) Raw material handling: Select Chinese herring
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What kind of fish is turbot?
Turbot (Scopthalmus maximus) is a marine flatfish with high economic value and high protein requirements, farmed in northern Europe, especially along the Atlantic coast. A recent research report explored the effectiveness of using concentrated soybean protein as the main protein source in feed. This study replaced 0, 25%, 50%, 75% and 100% of the fishmeal in the feed with concentrated soybean protein. The initial weight of the test fish was 13 grams. After the trial ended, it was found that replacing 25% of the fishmeal in the feed with concentrated soybean protein did not
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How to raise yellow catfish well? Disease prevention is key
To successfully farm yellow catfish, the key work lies in doing a good job of pest and disease control for yellow catfish. From fry stocking to adult fish harvesting, careful management is required throughout. 1. Winter preparation must be adequate. 1. Clearing the pond and fertilizing the water. Every winter, after the fingerlings are merged into ponds or the adult fish are harvested, drain the pond water, clean out the sludge at the bottom of the pond and repair the pond embankments, and let the pond bake and crack under the sun. This can accelerate soil weathering and achieve the purpose of controlling and eliminating pests and diseases; at the same time, it makes it easier to remove weeds around the pond and reduce the damage to fingerlings by parasites and aquatic insects.
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Stocking fish fingerlings in early spring requires care; mastering the method is key
Fingerling quality For fingerlings of the same species and age, the specifications should be uniform, with little difference in body length and body weight, thick back muscle, bright color, intact scales and fin rays, normal activity, and strong upstream-swimming ability. After being taken out of the water and placed in a basin, the gill cover should not open, the tail should not bend, and the fish should keep jumping, with no wounds or parasites on the body surface. Fingerling disinfection Some farmers do not disinfect fingerlings at all when stocking them, resulting in a high disease rate, and drug treatment is not ideal. In fact, as long as fingerling disinfection is done well, it often achieves twice the result with half the effort in preventing fish diseases. Fingerlings
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How can the efficacy of fishery drugs be improved? Master these five methods
Improve the binder The binder must be highly sticky, otherwise the drug will easily disperse and be lost in the water. Standard wheat flour is a relatively good binder material. For swallowing fish, it is best to make pelleted medicated bait or ball-shaped medicated bait for feeding. Add a feeding attractant Fish have a keen sense of smell; even if 1 gram of alanine is dissolved in 1 million liters of water, fish can still detect it. For example, if strongly aromatic Chinese herbal medicines such as star anise and Angelica dahurica are ground into fine powder to make a feeding attractant, and mixed into fishery drugs at a ratio of 10%-20%, or added to roasted soybean powder, wheat flour, etc., all have obvious feeding-attractant effects
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Treatment Methods and Practical Tips for Fish External Injuries
The fish body surface has a layer of mucus, which serves to protect the body surface from bacterial invasion. When a fish suffers an external injury, it is prone to infection by bacteria or mold, causing secondary diseases. Therefore, when a fish suffers an external injury, it should be treated promptly to avoid infection. During treatment, you can directly apply red mercurochrome to the injured area (avoid applying it to the eyes), or soak the sick fish in a dilute solution of 1 to 2 parts per million of antibiotics (such as tetracycline, furacilin, etc.). You can also apply anti-inflammatory ointment (such as erythromycin ointment, tetracycline ointment) to the injured area.
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What to Do When Juvenile Fish Grow Slowly? Causes and Solutions
Discus have a relatively high rate of infection with nematodes and flagellates, especially during the juvenile growth stage; after infection, juvenile fish grow more slowly. Adult fish suddenly lose appetite, waste away day by day, develop a swollen abdomen with a thin dorsal ridge, and may also develop enteritis and ascites. Capillaria and flagellates respond well to treatment. For growing fish and breeding broodstock, deworming can be done on a fixed monthly schedule, alternating with Baibichu. When discus are infected with Capillaria, obvious loss of appetite and emaciation indicate severe infection, so routine quarantine with a Capillaria treatment should be carried out regularly. The fish gradually waste away
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What key steps should be taken for autumn fish fry management
Pond clearing. Transfer the fish fry to a pond that has been cleared and disinfected for rearing. If water sources and pond rotation are difficult, all the fish fry can be transferred out for temporary holding, then the original pond disinfected with 75 kg to 100 kg of quicklime per mu, and the water fertilized by conventional methods; after the chemical effect has dissipated, transfer the fish fry back. Separate rearing. Adjust and separate the fish fry by different sizes so that the fry stocked in the same pond are of uniform size. Larger fry have a big appetite and a strong ability to compete for food; if small-sized fry are stocked in the same pond, the small fish will decline in condition because they cannot get enough feed.
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Detailed Explanation of the Basic Principles for the Use of Fishery Drugs
The use of fishery drugs is based on the basic principle of not harming human health and not damaging the aquatic ecological environment. In the aquaculture process, the prevention and control of diseases and pests in aquatic animals must adhere to the principle of giving priority to prevention, with treatment as a supplement. The use of fishery drugs should strictly follow the regulations of the state and relevant departments, and it is strictly prohibited to produce, sell and use fishery drugs that have not obtained a production license, approval number, or production standard. Actively encourage the research, development, production and use of fishery drugs that are highly effective, fast-acting, long-lasting, and have low toxicity, few side effects and small dosage, and advocate the use of drugs specifically for aquatic products, biological fishery drugs and fishery biological
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