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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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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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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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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 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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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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Key points for overwintering management in the fry and fingerling culture of freshwater pomfret
The freshwater pomfret is a tropical fish species. Its main suitable growth temperature range is between 21-32°C, with the optimum range at 28-30°C. At a water temperature of 16°C, the pomfret only begins to eat a small amount; at 12°C, the fish's balance becomes disturbed; and at 10°C, it causes death. During the overwintering process, water temperatures that are too low
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Overwintering techniques for freshwater pomfret fry
The freshwater pomfret (Piaractus brachypomus) is a freshwater aquaculture fish species introduced to mainland China for farming in the 1980s. Because of its good meat quality, fast growth, ease of extensive rearing and large market demand, it is deeply favored by the vast number of farmers. However, since the freshwater pomfret is a warm-water fish, its optimal growth
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Sharing Experience in Feeding and Managing Thrush Birds
Thrushes can be kept as nestlings or adults, but adults are harder to tame and train, so most enthusiasts prefer to keep nestlings. Thrushes are classified by age into four types: nestling, soft-feathered, full-feathered, and old-feathered. A nestling is a young bird that has just hatched and has not yet left the nest; once the nestling
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How to choose a thrush for keeping? Methods for sexing male and female thrushes
Based on age, thrushes can be divided into four stages: ① Nestling refers to a newly hatched young bird that has not yet left the nest and cannot fly; ② Soft-feathered refers to a young bird from the end of the nestling stage until the feathers have fully grown; ③ Fully-feathered refers to a young bird from the soft-feathered stage until after the molt the following year. ④ Old-feathered refers to a bird 2 years
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