Artificial breeding method for silurus meridionalis

A technology for artificial reproduction and largemouth catfish, applied in fish farming, application, climate change adaptation, etc., can solve problems such as low hatching rate, and achieve the effect of convenient use and improved hatching rate

Inactive Publication Date: 2015-06-17
天津市宽余水产养殖专业合作社
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Problems solved by technology

Therefore, with the extensive fishing of humans, the number of largemouth catfish has decreased sharply, and people have gradually started artificia

Method used

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Embodiment Construction

[0012] The following will be described in detail in conjunction with the embodiments of the present invention.

[0013] A method for artificial reproduction of largemouth catfish, comprising selection of broodstock, cultivation of broodstock, artificial induced labor and fertilization, and hatching;

[0014] Selection of broodstock: The selected broodstock weighs 8kg-10kg, has the same individual size, is over 3 years old, and is healthy and disease-free. The selected female broodstock requires an enlarged, soft, and elastic abdomen. When the abdomen is raised, the outline of the ovaries can be seen clearly. Deep concave, dilated and ruddy genital pores, genital papillae of the selected male broodstock are pointed and more than 0.5 cm in length, genital pores are closed, the end is rosy, and semen flows out when the abdomen is lightly pressed;

[0015] Breeding of broodstock: Disinfect the pond before stocking the broodstock, and introduce the broodstock into a pond with an ar...

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Abstract

The invention provides an artificial breeding method for silurus meridionalis. The method includes the steps of selecting parent fish, cultivating the parent fish and performing artificial spawning induction, fertilization and hatch, wherein the weight of the selected parent fish ranges from 8 kg to 10 kg, the selected parent fish is more than three years old and is healthy and free of disease, the parent fish is introduced into a pond with the area being 120 square meter and water depth being 1.5-2.0 m to be raised, oxytocin is chorionic gonadotrophin and carp pituitary gland, water temperature for spawning induction is 25.5-29.8 DEG C, the effect time lasts for 10-12 hours, artificial dry fertilization is performed with the female-male ratio being 2:1, a hatching pond is 3.8 m long, 3.1 m wide and 1.2 m high, and water depth is 0.4 m; strict disinfection is performed in the mode that 0.3 kg of quicklime is spread on each square meter of the hatching pond; after toxicity disappears, water for hatching is placed in the hatching pond, and polyethylene net sheets with fertilized eggs are directly placed into the hatching pond for lentic hatching. The method is convenient to use, and the hatching rate can be increased by 15% when the silurus meridionalis is bred.

Description

technical field [0001] The invention relates to the field of largemouth catfish reproduction, in particular to an artificial reproduction method of largemouth catfish. Background technique [0002] Bigmouth catfish is a rare and valuable nutritious product. It has been recorded in history books as early as, and it can be compared with shark fin and wild soft-shelled turtle. Its therapeutic effects, such as nourishing yin and blood, nourishing qi, appetizing and diuretic, are not available in other fish. The meat is tender and contains more protein. It is a must-choice food for women's postpartum diet therapy. Therefore, with the extensive fishing of humans, the number of largemouth catfish has decreased sharply, and people have gradually started artificial breeding of largemouth catfish. However, when the largemouth catfish reproduces, the traditional breeding method has the problem of low hatching rate. Contents of the invention [0003] The object of the present inventi...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCA01K61/00Y02A40/81
Inventor 周树宽
Owner 天津市宽余水产养殖专业合作社
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