A kind of artificial reproduction method of wild Schizothorax Lhasa

A technology of artificial breeding and Schizothorax, applied in fish farming, application, climate change adaptation, etc., can solve the problems of broodstock damage, high cost, low survival rate, etc., achieve high induction rate, save hatching space, and reduce manpower input effect

Active Publication Date: 2021-06-25
西藏自治区农牧科学院水产科学研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent does not give a suitable breeding season for Lhasa Schizothorax; uniformly adopts 2 needle injections, and needs to check more frequently whether the spawned broodstock is viable, and each inspection will cause greater damage and stress to the broodstock; the broodstock is domesticated from wild broodstock. The domestication time needs at least 1 year, and the survival rate is extremely low, and the cost is too high; under the condition of the suitable water temperature of Lhasa Schizothorax at 12°C, the fry are fed with food for 10 days, which does not satisfy the hunger time

Method used

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  • A kind of artificial reproduction method of wild Schizothorax Lhasa
  • A kind of artificial reproduction method of wild Schizothorax Lhasa
  • A kind of artificial reproduction method of wild Schizothorax Lhasa

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Embodiment 1

[0042] A method for artificial propagation of wild Schizothorax Lhasa, comprising the following steps:

[0043] A. Broodstock collection

[0044] Collect Lhasa Schizothorax broodstock from the Yarlung Zangbo River from early April to late May each year, and select healthy and well-developed Lhasa Schizothorax broodstock;

[0045] B. Artificial induced labor

[0046] Before inducing labor, first anesthetize the parent fish with an anesthetic, and then give the female fish and the male fish an oxytocin injection; female fish: 1 injection or 2 injections depending on the maturity of the gonads of the parent fish. Parents with better maturity are injected with 1 injection, 10 mgDOM+10μg LHRH-A per kg female 2 , parents with poor maturity use 2 injections, the first injection is 2mgDOM+2μg LHRH-A per kilogram of female fish 2 24 hours later, inject the second injection, inject 8 mgDOM+8μg LHRH-A per kilogram of female fish 2 ; Male fish: 1 injection method for male fish, 24 hours...

Embodiment 2

[0059] This embodiment is on the basis of embodiment 1:

[0060] The broodstock refers to selection of female fish with a body weight of more than 1050 g, a body length of more than 48.5 cm, and an age of more than 12 years; the abdomen is enlarged and soft, with obvious ovarian outlines, the anus is slightly protruding, red, and the abdomen is lifted upside down and collapsed; Male fish with a body weight of more than 346 g, a body length of more than 34 cm, and an age of more than 9 years old. The abdomen is long and narrow, and there are obvious pearl stars on the tip of the snout. The abdomen is lightly pressed, and milky white semen flows out of the cloaca.

Embodiment 3

[0062] This embodiment is on the basis of embodiment 1:

[0063] The parent with better maturity refers to: the abdomen is swollen and soft, the cloaca is slightly prominent, reddened, the abdominal cavity is lifted and the abdominal cavity is obviously collapsed, and a small amount of eggs appear in the cloaca of the abdomen when the abdomen is lightly pressed; The parents refer to: the abdomen is swollen and hard, the cloaca has no prominent and red features, the abdomen is not obvious when the abdomen is lifted upside down, the abdomen is lightly pressed, and the cloaca has no eggs.

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PUM

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Abstract

The invention provides a method for artificial breeding of wild Schizothorax Lhasa, comprising the following steps: A, broodstock collection: collect Lhasa Schizothorax broodstock in the Yarlung Zangbo River from early April to late May each year; B, artificially induced labor: before induced labor, First anesthetize the parent fish with an anesthetic, and then give the female fish and male fish a stimulant injection; C. Artificial insemination: After the parent fish is anesthetized with an anesthetic, collect semen and eggs, and use dry insemination; D. Fertilized eggs hatch: sarcomeres appear Before the period, place the fertilized eggs in the hatching frame for hatching in running water; after the fertilized eggs develop to the sarcomere stage, remove the dead eggs, and move the fertilized eggs into the fish egg incubator to hatch; E, fry open. Realize large-scale artificial breeding of Lhasa Schizothorax.

Description

technical field [0001] The invention belongs to the technical field of fish breeding, and in particular relates to an artificial breeding method for wild Schizothorax Lhasa. Background technique [0002] Lhasa Schizothorax, commonly known as Lhasa Bowfish, is only distributed in the middle and upper reaches of the Yarlung Zangbo River and its affiliated water bodies. It has few resources, slow growth, and late sexual maturity. It is an endemic species in my country and is also the main economic One of the fish. Affected by tradition and religion, Tibetans do not eat fish. At present, there are still a certain number of Schizothorax in Lhasa. However, since the 1950s, a large number of foreign populations have entered Tibet for development, and the fishing intensity has continued to increase. Especially in recent years, with the improvement of people's living standards, eating "plateau fish" has become a fashion in many places; Lhasa The demand for Schizothorax is growing ra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/10A01K61/17
CPCA01K61/10A01K61/17Y02A40/81
Inventor 曾本和刘海平王金林王万良牟振波周建设潘瑛子林少卿
Owner 西藏自治区农牧科学院水产科学研究所
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