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A method to improve the survival rate of postpartum female broodstock of Lhasa Schizothorax

A technology for the survival rate of Schizothorax, applied in fish farming, application, climate change adaptation, etc., can solve the problems of reducing the mortality rate of broodstock after birth

Active Publication Date: 2022-04-22
HUAZHONG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Referencing postnatal broodstock maintenance methods for fish in low-altitude areas cannot effectively reduce postnatal broodstock mortality
There are no reports on postpartum broodstock care of high-altitude indigenous fish in plateau areas to improve the survival rate of postpartum broodstock

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A batch of 160 female parents of Schizothorax Lhasa, the body length ranges from 43.1 to 51 cm, the body weight ranges from 808 to 1628 g, and the average weight is 1300 g.

[0019] After spawning, the broodstock were divided into two groups for treatment, one group was directly placed in a still water pond, and the other group was placed in the same pond after being stimulated by running water in a postpartum recovery pond for 36 hours. Pond conditions: rectangular, with an area of ​​4 mu, water depth of 1.2m, pond water temperature of 12±1°C, dissolved oxygen greater than 6mg / L, still water. The middle of the pond is separated by mesh, and the area of ​​each side of the mesh is 2 mu.

[0020] One group of 80 piglets was directly put into the still water pond after postpartum anti-bacterial infection treatment. The postpartum broodstock were put into the pond and scattered and swam slowly in the pond. After 72 hours, 56 postpartum parents died, and the survival rate w...

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PUM

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Abstract

The invention relates to the field of aquaculture and discloses a method for the survival rate of postpartum female broodstock of Lhasa Schizothorax. Including the following steps: (1) Postpartum recovery pool preparation, choose a rectangular cement pool with a length of 2-4m, a width of 1m, and a water storage depth of 30cm. Flowing water with a velocity of 0.8m / s. The water temperature was maintained at 12±1°C. Dissolved oxygen in water is greater than 6mg / L. ⑵ Postpartum broodstock to prevent bacterial infection, inject florfenicol injection (commercially available) to the empty parents to prevent postpartum bacterial infection. The injection concentration is 10-15mg / kg fish body weight, intraperitoneal injection. ⑶ The postpartum broodstock recovery pool is temporarily raised, and the postpartum broodstock that has been treated to prevent bacterial infection is transferred to the postpartum recovery pool. The ratio of water to fish is 5-6:1. After 36 hours of running water in the postpartum recovery pond, the physical strength of postpartum broodstock gradually recovered, and their breathing and feeding abilities were enhanced, so they could be transferred to ponds for cultivation.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a method for improving the survival rate of postpartum female broodstock of Lhasa Schizothorax. Background technique [0002] Lhasa Schizothorax waltoni Regan, belongs to Cyprinidae, Cyprinidae, Schizothorax subfamily, Schizothorax genus, commonly known as sharp-billed fish, mainly distributed in the middle and upper reaches of the Yarlung Zangbo River and its affiliated water bodies, and is an important species in the Tibetan Plateau. It is one of the indigenous economic fishes in my country and is endemic to our country. Indigenous fishes on the Tibetan Plateau, including the Lhasa Schizothorax, occupy an important position in Tibet's alpine and fragile ecosystem. [0003] In recent years, with the development of the economy, people have gradually increased the development of the Yarlung Zangbo River. Due to the intensification of a series of human activities such as water ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/10A01K61/13
CPCA01K61/10A01K61/13Y02A40/81
Inventor 杨学芬杨瑞斌曾小理何林强徐兆利谭博真曾本和刘海平
Owner HUAZHONG AGRI UNIV
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