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Detailed Explanation of Key Technical Points for Polyculture of Soft-shelled Turtles, Crabs, Shrimp and Fish
1. Pond conditions: The pond area is 3.5 mu, the pond bottom is flat, the silt thickness is about 15 cm, and the water depth is 1.5 m. A 40 cm wide glass fence is installed around the pond, equipped with a 1.5 kW paddlewheel aerator. 2. Pond clearing and water fertilizing: After clearing the pond by the dry method with 75 kg of quicklime per mu, expose it to the sun for 5 days. One week before releasing the seedlings, fill with water to a depth of 80 cm, and use Feishuibao and EM original liquid to fertilize the water quality, so that the water transparency is about 30 cm and the water color is tea-brown or yellow-green. 3. Seedling stocking: On May 20, a total of 0.7-0.8
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How to make heat-clearing fish fillet soup? A simple and tasty home-style recipe
Main ingredients: 4 liang (about 160 g) grass carp meat, 1 century egg, 1 tablespoon shredded pickled cucumber, 3 sprigs cilantro, 2 teaspoons each oil and light soy sauce, 2 slices ginger, a pinch of salt. Method: 1. Slice the grass carp meat, shred the ginger, cut the cilantro into sections, and cut the century egg into 6 pieces. 2. Mix the grass carp slices with oil, shredded ginger and light soy sauce. 3. Pour water into a pot and bring to a boil, add the pickled cucumber and century egg, cover, and boil over high heat for 2 minutes. 4. Add the fish slices and cilantro, cook over high heat for 2 minutes, add salt to taste and it is ready. Note: 1
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How Can the Disease Resistance of Fish Be Improved? 6 Effective Methods
Under current farming conditions, it is impossible to eliminate all pathogens. But to control the occurrence of fish diseases, we can start with scientific breeding management and maintaining the ecological balance of the aquaculture water body to improve the disease resistance of fish. As long as the measures are appropriate, we will achieve twice the result with half the effort. 1. Reasonable mixed culture. Reasonable mixed culture can not only increase the yield per unit area, but also has a certain effect on the prevention of fish diseases. Because the parasites suitable for different species of fish are not exactly the same, some parasites can only parasitize a certain species of fish,
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What are the key technical points for fattening fish, shrimp and crabs in autumn?
1. Rational water exchange and cultivating nutrient-rich water. Starting from May, use "medicated bait" and "medicated liquid" to prevent and control diseases and pests once every month or every 20 days. During the transition period from summer to autumn, pay even more attention to water quality regulation; prevent the pond water from "turning" or becoming "old", and maintain suitable transparency of nutrient-rich water. Keep the transparency of fish ponds at about 25 cm, shrimp ponds between 30 and 36 cm, and crab ponds at 35 to 40 cm. If the pond water transparency is less than the normal requirement for fish, shrimp and crabs, promptly use quicklime at 5 to 7.5 kg per mu to regulate water quality; if it is greater than what is needed for the growth of fish, shrimp and crabs, apply fertilizer as appropriate to enrich the water.
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Detailed Explanation of Prevention and Treatment Methods for Bacterial Diseases in Sweetfish
I. Vibriosis 1. Symptoms Depending on the species of Vibrio involved, vibriosis can be roughly divided into three types: yellow liver type, intestinal tip type, and ulcerative type. Diseased fish show weak swimming, darkened body color, protruding eyeballs, and epidermal hemorrhage that in severe cases penetrates into the muscle layer. The inner surface of the operculum, fin bases, and snout tip show congestion followed by ulceration, the anus becomes red and swollen, and gill color becomes pale. The liver of diseased fish becomes enlarged, with some livers completely fading to a yellowish-earth color and others showing localized fading and congestion. Blister-like structures filled with bloody fluid appear in the liver of diseased fish, the gallbladder becomes enlarged and filled with orange-yellow or brown-green bile; the kidney
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A Brief Introduction to the Effect of Mannich Base Ingredient in Killing Fish Parasites
Mannich base ingredient is a highly efficient biological insecticide extracted from the roots and leaves of the pure plant eucalyptus and made through scientific processing. More than 1000 years ago, people already knew that eucalyptus has medicinal value. Especially in rural areas of southwest China, its roots and leaves are commonly soaked into a liquid to directly kill maggots and other pests. In recent years, after in-depth research by relevant departments at home and abroad, preparations have been extracted from it, and it is recognized as a biological insecticide that is broad-spectrum, highly efficient, low-toxicity, easily degradable, residue-free, free of "three-causing" effects, and
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How to prevent and treat fish outbreak of hemorrhagic disease in autumn
Fish are prone to outbreak hemorrhagic disease in autumn. This disease has a sudden onset, spreads quickly, lasts a long time in its epidemic period, and has a high mortality rate and causes great losses. Once it breaks out, it is difficult to control, and the condition easily recurs. Fish farmers should strengthen their awareness of prevention to prevent the occurrence of this disease. 1. Fish fry disinfection: Before fish fry are put into the pond, they must be disinfected by soaking in 1%-2% salt water. The soaking time depends on the fish's physique and the temperature. When conditions permit, fish fry can be soaked with outbreak hemorrhagic disease vaccine. 2. Timely water changing and oxygen increasing: Keep the water quality fresh and change the water frequently. If
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What are the pond-clearing methods? Remember these five before stocking fish fry
Before stocking fish fry, the aquaculture pond must be cleared to kill various predatory small wild trash fish, harmful aquatic animals and plants, parasite eggs, pathogenic bacteria, etc., creating a good environment for the growth of adult fish. The following five pond-clearing methods are introduced: 1. Clearing the pond with quicklime. When carrying out drainage pond clearing (that is, draining the pond water to a depth of 5-10 cm of remaining water before clearing), use 60-70 kg of quicklime per mu of pond; when clearing without draining, use 125-150 kg per mu of pond for every meter of water depth (200 ppm).
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Yellow catfish is a high-quality fish species worth recommending
Yellow catfish, also known as jiangsang, gayazi, and angsi fish, has a yellow-green back, yellow flanks with intermittent black patches, a naked scaleless body, and an elongated shape. It is distributed in natural waters in most parts of China. The yellow catfish is a warm-water bottom-dwelling fish that prefers to inhabit still or slow-flowing waters. Its survival temperature is 0°C-38°C, it has extremely strong adaptability, and it has great aquaculture potential, so it can be promoted for farming in most inland waters nationwide. The yellow catfish has tender flesh and a delicious taste. It not only has nourishing effects but also has certain medicinal value, and is deeply favored by consumers
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Which fish can survive out of water?
Fish rely on their gills to breathe the oxygen dissolved in water, so fish cannot live without water and will die quickly once they leave it. Generally, species with large gill openings die faster than those with small gill openings. But there are a few fish that can live for a long time out of water, because in addition to their gills as the main respiratory organ, these fish also have accessory respiratory organs to assist breathing, and thus can leave the water without dying. As is well known, fish such as climbing perch, betta, snakehead, and walking catfish can leave the water for a long time without dying. In addition to their own strong vitality,
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