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Key Technical Points for Semi-Artificial Propagation and Culture of Yellow Catfish
Because the testes of male yellow catfish are dendritic in shape, semen cannot be squeezed out; therefore, in current fully artificial propagation, the usual practice is to kill the male fish, remove the testes, cut them into pieces, and perform artificial insemination, after which all the male fish die. After manual egg squeezing, the vast majority of female fish also die. Fully artificial
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Detailed Explanation of Key Points in Artificial Breeding Technology for Yellow Catfish
Yellow catfish, also known as Wansi fish or Jiangsang fish, is a fecundity-type fish with strong adaptability and can be bred in various water bodies. It is easy to raise, commands a high price, and yields good returns. Its flesh is tender and its taste is delicious, making it a high-quality premium aquatic product that is increasingly favored by consumers.
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Key Points of Artificial Breeding Technology in Black Carp Aquaculture
The black carp is an excellent species for freshwater aquaculture in our country. It uses benthic organisms as feed, grows quickly, has a large individual size, tender flesh, and good flavor, and is high in fat and protein with abundant vitamin content, making it highly valued by the public and professional aquaculture households. The demand for fry is increasing day by
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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 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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Detailed Explanation of Key Technical Points for Raising Mandarin Fish in Ponds
(1) Selection of breeding conditions: Choose a pond with abundant water source, convenient water filling and drainage, and excellent water quality, with a pond area generally of 2~3 mu and a water depth of 1.5~2 m. (2) Preparation before stocking: ① Disinfect the pond. ② After clearing the main breeding pond, apply decomposed base
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Detailed Explanation of Key Technical Points for Mandarin Fish Pond Aquaculture
As people's living standards continue to rise, wild salmon falls far short of meeting market demand, so healthy salmon aquaculture has good development prospects. Mandarin fish is also called mandarin fish, jihua fish, etc. It belongs to the order Perciformes, genus Siniperca, and is widely distributed. In all major river
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Key Technical Points for Pond Culture of Freshwater Pompano
The freshwater pompano is a large economically important fish of tropical and subtropical regions, valued both as food and as an ornamental fish. It has the advantages of omnivorous feeding habits, fast growth, large individual size and few diseases. In pond culture it generally lives in the middle and lower layers of the water body, and its tolerance to low oxygen is stronger than that of ordinary fish, with dissolved oxygen required to be above 3
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Technical Measures to Improve the Survival Rate in Meat Duck Farming
One, select good ducklings. To purchase ducklings, go to a breeder duck farm with good disease prevention work, where the breeder ducks are strictly vaccinated against fowl cholera, colibacillosis, duck plague, avian influenza, viral hepatitis and other diseases according to the immunization program, and the hatchery's disease prevention conditions meet national regulations.
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Methods for Pond Culture of Tubifex Worms and Key Points of Breeding Technology
For breeding premium aquatic products, feed is an important material foundation and restrictive factor, as it determines the success or failure of the cultured species and the level of economic benefit. Tubifex worms reproduce quickly and have high nutritional value (dry matter contains 62% crude protein, total essential amino acids reach 35%, nitrogen recovery rate reaches
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