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Torrent fish domesticating method

A technology of fish and rapids, which is applied in the field of domestication of rapids fish, can solve the problems of high mortality rate of diseases and insect pests, stagnation of gonad development, strong stress response and other problems, and achieve the effects of risk control, overcoming gonad development and reducing harm

Active Publication Date: 2015-07-08
CHINESE STURGEON RES INST CHINA THREE GOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these types of wild fish are subject to three major technical difficulties: strong stress response, stagnation or degeneration of gonad development, and high lethality of diseases and insect pests such as melon worm disease. The project has so far progressed slowly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The rapid current fishes to be domesticated in the present embodiment are: 2~3 ages of round-mouthed copperfish, which were collected from the temporary cages in rivers and rivers in 2011 to 3 years in 2013. There were 3 batches of 384 tails in total, which were respectively: 55 in 2011, 131 in 2012 and 198 in 2013; the weight range: 0.29~0.48kg.

[0023] Its specific domestication steps are:

[0024] 1) The breeding pond is set up outdoors with a diameter of 4m and 6m, and is equipped with a sunshade. There is a sewage pipe installed in the breeding pond. First, the breeding pond is cleaned, disinfected and watered, and then the 3~5-year-old generation of Dabry's sturgeon is introduced to control The water depth is 80~100cm;

[0025] 2) After Dabry's sturgeon adapts to the environment, raise copperfish of the same age separately, and maintain the biomass of a single pond at 5-10kg / m 2 , where the nesting ratio is 1:10~20 by weight of copperfish and Dabry's sturgeon, ...

Embodiment 2

[0028] The to-be-domesticated torrent fishes selected in this example are: 3 to 4-year-old wild albacore, which was collected from fishermen in the lower section of Xiangjiaba in the autumn of 2012, with a total of 92 tails, with an initial weight range of 0.1 ~0.3kg.

[0029] Its specific domestication steps are:

[0030] 1) The breeding pond is set up outdoors, with a diameter of 6m circular glass fiber reinforced plastic basin, and is equipped with a sunshade. There is a sewage pipe installed in the breeding pond. First, the breeding pond is cleaned, disinfected and watered, and then the 3~4-year-old generation of Dabry's sturgeon is introduced. , control the water depth to 80~100cm;

[0031] 2) After the Dabry's sturgeon adapts to the environment, the long-finned goblins that have been temporarily raised are housed, and the biomass in a single pond is maintained at 5-10kg / m 2 , where the nesting ratio is 1:20-30 by weight of albacore and 1:2-30, and 1:2-3 by quantity; th...

Embodiment 3

[0034] The rapid current fishes to be domesticated in this embodiment are: 2-4 years old wild long thin loach, which was collected from fishermen in the lower section of the Xiangjiaba River in the spring and autumn of 2011, with a total of 215 tails. The initial weight range is: 0.2~0.8kg.

[0035] Its specific domestication steps are:

[0036] 1) The breeding pond is set up outdoors, with a diameter of 6m circular glass fiber reinforced plastic basin, and is equipped with a sunshade. There is a sewage pipe installed in the breeding pond. First, the breeding pond is cleaned, disinfected and watered, and then the 2~3-year-old generation of Dabry's sturgeon is introduced. , control the water depth to 80~100cm;

[0037] 2) After the Dabry's sturgeon adapts to the environment, the long thin loach that has been temporarily raised is set up, and the biomass in a single pond is maintained at 5~8kg / m 2 , wherein the nesting ratio is 1:8~10 by weight and 1:3~4 by weight ratio betw...

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Abstract

The invention discloses a torrent fish domesticating method. After first filial generation of acipenser dabryanus of 1-5 ages is raised in a culture pond, and then the torrent fishes to domesticated are added to the pond for raising. According to the domesticating method, the acipenser dabryanus and the torrent fishes are raised together, so that the stress response of wild fishes can be reduced, and the ichthyophthirius multifiliis infection resistance and the large individual characteristics of the acipenser dabryanus are utilized, and torrent is created by fishtailing to drive the activity of the wild fishes; the large cluster of the wild fishes is reduced and the probability of reciprocal infection of the ichthyophthirius multifiliis is reduced; as a result, the ichthyophthirius multifiliis can be effectively prevented, the survival rate is increased, the drug use is reduced and the pollution to the water environment is reduced.

Description

technical field [0001] The invention belongs to the field of breeding rare and unique fish, and in particular relates to a method for domesticating rapid-flow fish. Background technique [0002] Round-mouthed copperfish, longfin snout, long thin loach and copperfish are endemic fish in the upper reaches of the Yangtze River, with high economic and nutritional value. In recent years, due to water pollution in the Yangtze River Basin, construction of large-scale water conservancy projects, and overfishing, the amount of wild resources has declined sharply. The "Report on the Environmental Impact of the Three Gorges Project" clearly pointed out that the Three Gorges Project will have varying degrees of impact on the survival and reproduction of more than 40 species of rare and endemic fish species in the Yangtze River, including the round-mouthed copperfish, the long thin loach, and the long-finned snout. . At the same time, the "Overall Plan for the Construction of Fis...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 鲁雪报刘勇倪勇胡美洪曲焕韬吕小林
Owner CHINESE STURGEON RES INST CHINA THREE GOR
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