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How to farm freshwater pomfret? Mastering these three points is key
Freshwater pomfret is a new species introduced in recent years from the United States, Hong Kong, China and other places. Because of its wide adaptability, omnivorous feeding habits, fast growth, strong disease resistance, few bones, no intermuscular spines, tender meat and good market demand, it is very popular among fishermen. Freshwater pomfret, shape
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How to prevent and treat saprolegniasis in freshwater pomfret during overwintering
1. Diseases commonly occurring in freshwater pomfret during overwintering. The most common fish diseases occurring in freshwater pomfret during overwintering are saprolegniasis, ichthyophthiriasis, trichodiniasis, chilodonelliasis, etc., especially ichthyophthiriasis, which can easily cause explosive death. The causes of various fish diseases are due to
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Overwintering management techniques for freshwater pomfret fry and fingerlings after being stocked into ponds
1. Overwintering pond preparation: area 600-1500 sq m, pond depth 1.5 m; the pond water in the Pukou District area of Nanjing is geothermal spring water, flowing into the pond in a slight current; the inlet pipe is 10 cm, and the mud at the pond bottom is 10 cm thick. After drying the pond and disinfecting it, fill with water. Each pond is equipped with two 3-kilowatt aerators. 2. Pomfret fry and fingerlings
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How to prevent and treat ichthyophthiriasis in freshwater pomfret during overwintering?
Ichthyophthiriasis is the second most common disease of freshwater pomfret during overwintering. Its incidence rate is lower than that of saprolegniasis, but the mortality rate per unit area is higher than that of saprolegniasis, and it can also lead to concurrent saprolegniasis. 1. Pathogen Ichthyophthirius multifiliis. 2. Symptoms On the body surface and
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Sharing Daily Management Experience in Freshwater Pompano Farming
1. Bait varieties One type is directly fed with Northeast soybeans. The other type is fed with pellet feed, with a protein content of more than 32%; the later-stage feed should increase the fat content. 2. Feeding method The feeding method for soybeans is to inspect the pond more than three times a day and add more as soon as they are eaten, with the daily feeding amount based on the principle that it is eaten within 24 hours. Pellet feed is fed with a feeder. After the fingerlings are stocked, sufficient bait should be fed according to conditions such as weather and water temperature. Especially in June, when the water temperature rises and the fish gain weight, the feeding amount should be increased at the right time. The feeding amount should be controlled on the principle that the fish are full and no fish are competing for feed in front of the feeder. 3. Daily management After the fingerlings are stocked, pay attention to changes in water quality. In the early stage, add water once every half month. In June, the fish eat more and excrete more, and water quality is prone to deterioration, so add water once a week, 20 cm each time, and keep the pond water color "fertile, lively, tender, and refreshing." Start the aerator at the right time. In the later stage, the fish load in the pond increases. When the weather changes, start the aerator early to prevent fish from gulping air at the surface. Patrol the pond frequently and inspect frequently so as to discover problems in time and understand the fish's feeding situation. 4. Fish disease prevention and control In the mixed-culture pond, on April 25, before stocking freshwater pompano, kill parasites and disinfect. The main disease during the farming process is enteritis. Soaking soybeans in florfenicol or mixing it into pellet feed and feeding for three days can take effect. 5. Harvest Freshwater pompano is easy to catch. With the first seine haul, 90% of the pond can be caught, and after two more seine hauls, the pond can basically be caught clean.
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Control methods for chilodonelliasis and trichodiniasis in freshwater white pomfret during the overwintering period
1. Pathogens: Chilodonella cyprini, Trichodina. 2. Symptoms: Both parasites attach to the skin and gills of fish, stimulating the secretion of large amounts of mucus, causing a pale blue film to form on the skin surface of diseased fish (chilodonelliasis) or a white film to appear on the fins, head, and body surface (trichodiniasis).
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Precautions for Farming Freshwater Pompano During the High-Temperature Season
When summer arrives, temperatures are high, water quality changes easily, and fish diseases occur easily. To reduce the impact of high temperatures on freshwater pompano farming, demonstration households are reminded to pay attention to the following points: 1. Copper sulfate and trichlorfon, as traditional chemical drugs, are widely used in fishery production, and sometimes
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Key Technical Points and Experience Sharing on Rotational Culture of Mandarin Fish and Freshwater Shrimp
Mandarin fish and freshwater shrimp are both currently popular species on the market, with large demand, high prices and high farming returns. Implementing rotational culture of mandarin fish and freshwater shrimp in ponds can maximize the use of the pond's idle period, fully utilize the water body and feed resources, increase output, and substantially raise pond
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Experience sharing on self-breeding live bait for mandarin fish farming
Last year, the mandarin fish farming area in Wujiang City exceeded 10,000 mu. Zhang Qifang, a skilled mandarin fish farmer at the Sixth Branch of the East Taihu Aquaculture General Farm, farmed 20 mu of mandarin fish in 1999, with 83.5 mu of supporting ponds (of which 44 mu were used for restocking oriental river prawns), achieving a mandarin fish yield of 613 kg per mu and a per-mu profit of 3,163 yuan. Mandarin fish alone
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How to carry out fry and fingerling rearing in mandarin fish aquaculture
Over the past ten years, mandarin fish fry rearing techniques have been continuously improved and enhanced, and the rearing methods have also become diverse, from the earliest pond rearing to factory-based fry rearing under artificially controlled conditions. Among them, the rearing methods currently considered relatively ideal include: hatching circular channel (tank) rearing
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