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Percocypris scaled artificial propagation method

A technology of artificial breeding and bass carp, applied in climate change adaptation, fish farming, application, etc., can solve problems such as differentiation, confusion of male and female broodstock, poor gonad maturity, etc.

Active Publication Date: 2015-06-03
YANGTZE RIVER FISHERIES RES INST CHINESE ACAD OF FISHERY SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The male and female broodstock of perch have no obvious secondary sexual characteristics in the breeding season, and it is difficult to distinguish them from the appearance. It is easy to confuse the male and female broodstock during the induction process, which affects the induction rate
[0005] (2) Due to the poor gonad maturity of the artificially bred broodstock, the conventional method of oxytocin is directly used, and the oxytocin rate is lower than 30%.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: (Bijie Experimental Base)

[0027] A method for large-scale artificial propagation of perch, the steps of which are:

[0028] (1) Breeding of broodstock: In July 2013, 15 broodstock that were artificially bred and reached the age of sexual maturity were selected and placed in an area of ​​about 45m 2 Mountain spring water flow pond for cultivation. Build artificial caves and artificial rivers beside the broodstock pond, pave the bottom of the pond with pebbles, river sand, etc., and build a shading net on the surface of the broodstock breeding pond to create an ecologically imitative habitat. Guaranteed 10-15m brood pond 3 The water flow rate per hour, the water depth is about 1m, the dissolved oxygen is ≥6mg / L; the annual water temperature is 13-19°C. While feeding artificial compound feed with crude protein ≥ 40%, stock carp and grass carp fry as bait fish. The amount of forage fish is maintained at 30-40% of the weight of the perch broodstock.

[0029...

Embodiment 2

[0035] Embodiment 2: (Experimental Base of Yumen Town, Panzhihua City)

[0036] A method for large-scale artificial propagation of perch, the steps of which are:

[0037] (1) Breeding of broodstock: In May 2013, 30 sexually mature broodstock were selected and placed in an area of ​​about 30m 2 Cement ponds with mountain spring water are cultivated. The method of building a sunshade net on the surface of the broodstock breeding pond is used to create an ecologically imitative habitat environment. Guaranteed fish pond ≥ 10m 3 / h of water flow, water depth of about 1m, dissolved oxygen ≥ 6mg / L; annual water temperature 7 ~ 23 ℃. Feed artificial compound feed with crude protein ≥ 40%.

[0038] (2) Identification of male and female broodstock: On March 20, 2014, select mature broodstock and use B-ultrasound to examine the abdomen of broodstock to identify male and female broodstock. B-ultrasound images showed that eggs were visible in the abdomen of female fish with heterogene...

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Abstract

The invention discloses a percocypris scaled artificial propagation method. The percocypris scaled artificial propagation method comprises the following steps of (1) culturing of parent fishes: using a flowing water pond as a parent fish culturing pond to culture; (2) distinguishing of male and female parent fishes: utilizing a B-ultrasonic scanner to check the abdomens of the parent fishes to distinguish the male and female parent fishes; (3) artificial maturation induction: injecting luteotropin into the distinguished female fishes to release hormone A2 to accelerate induction; (4) artificial spawning induction: performing artificial spawning induction on the selected male and female parent fishes; (5) artificial inseminating; (6) hatching: performing the flowing water and light shielding hatching on the fish spawns after artificial inseminating in a yarn silk hatching framework; (7) culturing of fish fries: when the hatching fish fries start to flatly swim, using the fairy shrimps or crushed water earthworms as an opening bait; after the fish fries are completely domesticated to eat an artificial matching feed, moving the fish fries to a fish fry culturing pond to culture. The method has the advantages that the implementation is easy, the operation is simple and convenient, and the distinguishing rate of the male and female parent fishes can reach more than 90%; the spawning induction rate of the matured parent fishes which are artificially cultured reaches 75%.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and more specifically relates to a large-scale artificial propagation method for perch, which is suitable for artificial propagation of perch. Background technique [0002] Perch ( Percocypris pingi pingi ) belongs to Cyprinidae, Cyprinidae, Cyprinidae (Cyprinidae) Percocy pris chu), mainly distributed in the main and tributary water systems of the upper reaches of the Yangtze River, and is a unique fish in the upper reaches of the Yangtze River. In recent years, due to changes in the ecological environment of the perch habitat, the amount of resources has shown a downward trend. In order to protect fish resources, it is urgent to carry out artificial breeding and release for resource recovery. The realization of large-scale artificial breeding of perch is a prerequisite for carrying out multiplication and release. [0003] At present, the artificial reproduction technology of perch car...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCA01K61/00A01K61/90Y02A40/81
Inventor 吴兴兵杨德国朱永久詹会祥何勇凤周礼敬郭威
Owner YANGTZE RIVER FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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