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How to improve the overwintering survival rate of forest frogs? These measures must be mastered
The forest frog, also known as the Chinese forest frog or Hasma, is mainly represented in China by the Chinese forest frog (Rana chensinensis) and the Heilongjiang forest frog (R. amurensis), which are widely distributed across the three northeastern provinces of China. Because of the forest frog's unique nutritional and medicinal value, especially its frog oil, it is highly sought after in domestic and international markets
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Prevention and Treatment Methods for Gas Bubble Disease in Overwintering Common Carp Aquaculture
June to September is the peak period for fish disease outbreaks. In adult fish ponds, hemorrhagic septicemia of crucian carp (Carassius auratus) frequently occurs and endangers silver carp, bighead carp, and blunt snout bream (Megalobrama amblycephala), causing heavy losses to farmers. Conventional medication generally produces poor therapeutic results. After years of repeated observation and treatment, researchers
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How to keep a Hwamei (Chinese Thrush) through the winter? Key points of winter feeding and management techniques
Feeding and management of the Hwamei through the winter: Before the start of winter each year, most Hwamei birds have molted into new feathers; this natural instinct and change of plumage are of great significance to the Hwamei's overwintering. In winter, when the weather is cold, the ambient temperature is very important to the Hwamei
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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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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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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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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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The importance of black carp broodstock rearing cannot be overlooked
The quality of broodstock rearing not only determines whether spawning can be induced successfully, but also directly affects the broodstock's egg-carrying capacity, hatching rate, and the survival rate and growth speed of the fry. Therefore, according to the different stages of gonad development in broodstock, a comprehensive
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