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Key Technical Points for Natural Breeding of Yellow Catfish in Ponds
In recent years, artificial breeding techniques for yellow catfish have made some breakthroughs, and many places have attempted large-scale production of fry and fingerlings. However, due to the particular structure of the gonads of yellow catfish, both the fertilization rate in artificial breeding and the survival rate of fry and fingerlings are relatively low, so the price of fry and fingerlings is relatively high. Zheng
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Experience and Technical Key Points for Raising Yellow Catfish in Paddy Fields
1. Paddy field selection. It requires convenient water intake and drainage, sufficient water source, good water quality, and strong water retention. The area is generally 8-10 mu per plot. 2. Field engineering. Dig "tian"-shaped or "jing"-shaped ditches, with a ditch width of 3-5 m and a depth of 0.8-1 m, build water intake and drainage canals well, seal the water intake and drainage outlets with fine-mesh nets,
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Key technical points to grasp in the intensive culture of black carp
Black carp, also known as snail green, is one of the conventional fish species cultured relatively early in our country. After years of summarized experience, farmers have relatively mature technology, but several technical points still need to be grasped during the culture process. Technical point one: intensive culture mostly uses large black carp polycultured with small black
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Key Technical Points for Disease Prevention and Control in Pollution-Free Black Carp Pond Aquaculture
1 Preventive measures Adhere to the principle of early prevention of disease-free fish, early treatment of diseased fish, with prevention taking priority over treatment. 1.1 Pond cleaning and disinfection; 1.2 Fry disinfection; 1.3 Feed disinfection The feed fed should be fresh, clean and hygienic. After washing snails and clams, select fresh and live ones for feeding; soak green feed in 3mg/L to 5mg/L bleaching powder solution for 20min to 30min; add or spray liver and gallbladder rehabilitation agents and vitamin C to compound feed to prevent black carp hepatobiliary syndrome. 1.4 Feeding ground disinfection
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Key Technical Points for Pollution-Free Pond Farming of Black Carp
Black carp, also known as qing huan, luosi qing, hei huan, or gang qing, is one of China's four major domestic carps and belongs to the subfamily Leuciscinae of the family Cyprinidae, order Cypriniformes. Its body is cylindrical, with a laterally compressed tail and a rounded belly; the back and the upper half of the flanks are blue-black, the belly is milky white, and all fins are grayish-black.
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Key Technical Points for Pond-Based Main Culture of Black Carp
The black carp, also known as qinghuan, wuqing, or luosiqing, has a relatively large body size and delicate, tender flesh, ranking first among the "four major Chinese carps"; it is highly favored by consumers, with a market price as high as over 14 yuan per kilogram, and demand exceeds supply, so pond-based main culture of black carp is highly profitable. The culture techniques
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How to do cage culture of mandarin fish? Detailed explanation of key technical points
Mandarin fish, also known as the Chinese perch, is one of the valuable freshwater fish species. Cage culture of mandarin fish has the advantages of occupying less water surface, low investment, short culture cycle, high yield and good economic returns. The cage culture techniques for mandarin fish are introduced below. Water area selection: The water area where cages are set up requires
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Key Technical Points for Monoculture of Mandarin Fish in Ponds
Mandarin fish, also known as osmanthus fish, has a lower yield per unit area compared with ordinary domestic fish, but its output value is high. In recent years, it has been highly favored by the vast number of farmers and has become a hotspot in the culture of famous, special and superior fish. The key technical points for monoculture of mandarin fish in ponds are as follows. 1. Pond conditions. Choose
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Technical Measures for Increasing Yield and Efficiency in Polyculture of Mandarin Fish
Monoculture of mandarin fish requires an adequate supply of matching forage fish, has relatively high technical requirements, and presents certain difficulties for large-scale farming. Mandarin fish can be polycultured in other aquaculture water bodies. I. Polyculture Methods 1. Polyculture in adult fish ponds. For ponds raising predatory fish, abundant water sources are required
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Key Technical Points for Two-Stage Cage Culture of Mandarin Fish
I. Cage Structure and Setup 1. First-stage cage (breeding cage). Made of knotless netting, mesh size 0.5-1.0 cm, dimensions 10 m x 1.3 m x 1.5 m, quantity 3. 2. Second-stage cage (grow-out cage). Mesh size 1.5-2 cm, small-volume cages 3 units, dimensions 2 m x 2 m x 1.8 m; con
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