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Experience and Tips on Quality Control in Freshwater Pompano Aquaculture
The freshwater pompano, scientifically named Piaractus brachypomus (short-scaled giant characin), is a tropical and subtropical fish. It has the characteristics of broad feeding habits, fast growth, few diseases, easy harvesting, delicious taste, and rich nutrition. In recent years, the lack of scientific management and quality control during the aquaculture process has led to a decline in the quality of freshwater pompano
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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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What preparations are needed before raising adult freshwater pomfret?
I. Pond conditions The pond area for raising adult freshwater pomfret should preferably be 10-20 mu, with a water depth of about 1.8 m. The pond is required to have an adequate water source, fresh and pollution-free water quality, convenient water intake and drainage, a flat pond bottom and little silt. II. Pond clearing and disinfection At the end of the year, drain the pond and expose it to the sun, remove excess
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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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Prevention and Treatment of Oral and Lower Jaw Boils in Freshwater Pomfret Farming
[Cause] The pathogen may be bacteria, but it has not been isolated and identified. The main conditions for the pathogen to cause this disease are the oxidative deterioration of meat residue and oil paste in pelleted feed after long-term storage, and the deterioration of water quality. [Symptoms] Diseased fish show reduced feed intake. They swim slowly at the water surface and respond sluggishly,
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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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