Method for screening and separating high-quality fry and poor-quality fry in batches

A kind of fry, high-quality technology, applied in the field of batch rapid quality identification and screening and separation, which can solve the problems of poor swimming ability and high energy consumption.

Inactive Publication Date: 2009-10-28
EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Many fishes have the characteristics of top flow and like to hold their heads against the water flow, such as barracuda, which will swim against the direction of the water flow, but thi...

Method used

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  • Method for screening and separating high-quality fry and poor-quality fry in batches
  • Method for screening and separating high-quality fry and poor-quality fry in batches

Examples

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Embodiment Construction

[0011] When screening and separating high-quality fry and low-quality fry, it needs to be carried out in the ring, and the ring is elliptical (see figure 1 ), is formed by connecting the straight roads 18 on both sides with the bends 1 at both ends; the front end and the rear end of the straight road 18 on the left side of the loop are respectively provided with a front fender 7 and a rear fender 2, and a front fender 7 and a rear fender 2 is made up of wooden frame 17 and mesh sheet 16 (see figure 2 ), play the effect of blocking fry swimming everywhere; 3 draw-in grooves 3,4,6 are installed on the inner wall of the straight road 18 between the front baffle plate 7 and the rear baffle plate 2, respectively the 1st road draw-in groove, the 1st draw-in groove 2 draw-in slots and the third draw-in slot, the draw-in slots are fixed on the inner wall of the straight road 18 with nails; the movable baffle 5 is composed of a wooden frame 17 and a mesh 16, and the movable baffle 5 c...

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Abstract

The invention discloses a method for screening and separating high-quality fry and poor-quality fry in batches, belonging to the method for screening and separating the fry, which aims to provide a method for screening and separating the high-quality fry and the poor-quality fry. The method is carried out in a circular way and is characterized in that a straight way on the left side of the circular way is respectively provided with a front baffle plate and a rear baffle plate, and three slip grooves are arranged between the front baffle plate and the rear baffle plate; and a diving pump, an inflating head and a heating rod are put in a straight way on the right side of the circular way. When the fry are screened and separated, the speed of the water flow is maintained at about 1cm/s so as to form a clockwise water flow in the circular way. The fry is put in water adjacent to the front baffle plate, and the speed of the water flow is gradually changed so as to ensure that the fry with poor physique swim to the rear baffle plate with the water flow, and the fry with good physique still stay at the front baffle plate. After the fry are steadily distributed on the left straight way, movable baffle plates are rapidly inserted at the three slip grooves. The fry adjacent to the front baffle plate have the best physique, the fry adjacent to the rear baffle plate have the poorest physique, and the high-quality fry are fished out and put in a culture pond for culturing.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and relates to a batch rapid quality identification, screening and separation method for fish fry with top flow characteristics. Background technique [0002] Fish is a large family of marine organisms, the main fishing target in fishery production and an important source of high-quality animal protein for human beings. In recent years, with the decline of fishery resources, fishery production has shifted from fishing to aquaculture. Fish seed is an important material basis for fish farming. The quality of fish seed is directly related to the output of fish farming. Therefore, farmers attach great importance to the quality of fish seed and hope to select the best seed Only in this way can the survival rate and growth rate of fish in the breeding process be improved. [0003] Usually the method of identifying fish quality includes the following steps: first look at the body color, the body c...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 冯广朋庄平章龙珍刘鉴毅
Owner EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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