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Hatching method for adhesive fish egg

A fish egg and sticky technology, which is applied in the hatching field of sticky fish eggs, can solve the problems such as no public reports, and achieve the effect of novel structure, good water flow exchange and convenient operation

Inactive Publication Date: 2010-09-08
云南省水产技术推广站
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Through document retrieval, do not see the public report identical with the present invention

Method used

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Experimental program
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Embodiment Construction

[0010] The present invention further describes the present invention in detail by taking the artificial hatching of barb in Dianchi Lake as an example.

[0011] 1. Fish nest design and implantation of fertilized eggs

[0012] According to the characteristics of high elasticity, good toughness and strong viscosity of sticky eggs, the fish nest is made of iron wire with a diameter of 2mm to make a frame of 40cm×30cm, covered with a polyethylene mesh with an aperture of 1mm, and sewn into a flat hatching mesh; Before laying eggs, sink the hatching mesh into a large basin filled with 10-15cm of water for cleaning. After 2 to 3 times of cleaning, the artificially inseminated eggs are gently sprinkled with chicken feathers and settled on the hatching mesh. Each hatching mesh 7,000-8,000 eggs with a particle size of 2mm are evenly distributed on the slices; try to make the eggs evenly distributed and not pile up too much into agglomerates. The hatching mesh with laid eggs is left to...

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Abstract

The invention relates to a hatching method for adhesive fish eggs, belonging to the technical field of fish reproduction. The invention is an improved invention. The fish nests of the invention are flat hatching net sheets sewn by using a frame made of iron wires and polyethylene net sheets. On each hatching net sheet 7000-8000 eggs with grain size of 2mm are evenly distributed. The hatching net sheets on which eggs are distributed are statically placed for two minutes and then are sequentially suspended in a covered hatching pond for hatching in running water. Fifteen to twenty hatching net sheets are placed in each square meter of water surface in the hatching pond. Hatching water flow is controlled to be 3-5m<3> / hour, water temperature is controlled to be 11 DEG C-18 DEG C and daily temperature difference does not exceed 2 DEG C; broken egg skins and other impurities are absorbed out everyday through siphonage; the date that fish fries break through egg membranes is the seventh day to the fifteenth day. The invention has the advantages that the hatching facilities are simple, the operation is convenient, the water flow exchange is good, the damaged eggs and the dead fries can be observed easily and removed in time, the water molds are effectively prevented from breeding, the hatching rate of fertilized eggs is high and the promotion and the popularization are easy.

Description

Technical field: [0001] The invention relates to a method for hatching sticky fish eggs, which belongs to the technical field of fish reproduction. Background technique: [0002] In the artificial reproduction of fish, the hatching method generally adopted for viscous fertilized eggs (such as carp, crucian carp, catfish, etc.) is usually to stick the viscous fertilized eggs to brown chips, fibrous roots of plants, old nets, etc. Hatch on attachments. But it is difficult to achieve even distribution with these materials to adhere fish eggs, the fertilized eggs are easy to pile up, the water flow exchange is poor, and the hatching rate is often not high. Especially for the hatching of viscous fertilized eggs of some cold-water fish that have a long incubation period, need better water exchange, and are prone to saprolegnia, it is necessary to solve the adhesion materials of the fertilized eggs in order to improve the artificial hatching rate. [0003] For example, Sinocycloc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 田树魁石永伦华泽祥万虎郑泽芳杨辉明龙斌
Owner 云南省水产技术推广站
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