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Ecological silvery pomfret fry breeding method

A silver pomfret, ecological technology, applied in the field of silver pomfret ecological nursery, can solve the problem of high mortality rate of nursery

Active Publication Date: 2020-06-16
NINGBO UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The problem to be solved in the present invention is to provide a silver pomfret ecological seedling raising method, thereby effectively solving the problem of high seedling mortality in the silver pomfret seedling raising process

Method used

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Embodiment Construction

[0029] The technical method of the present invention will be described in detail in the following examples:

[0030] A method for ecological seedling cultivation of silver pomfret, which specifically includes: a step of collecting fertilized eggs, an indoor hatching step, a fry cultivation step, and an artificial feed transition cultivation step;

[0031] 1) Collect fertilized eggs

[0032] The fertilized eggs are collected by the drainage method. A 200 mesh net bag is placed on the drainage port, and the net bag is placed in a foam box. Use a valve to adjust the drainage size. The drainage speed is not easy to be too fast, causing the fertilized eggs to break. When the drainage reaches a height of 40cm At the beginning, add water while draining to 20cm, collect the eggs in the pool; wash the collected fertilized eggs with clean sea water 2-3 times, and put the collected eggs in a small bucket with a height of 0.5m and a volume of 200L Precipitate dead eggs, repeat the precipitation...

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Abstract

The invention relates to the technical field of aquaculture, and specifically relates to an ecological silvery pomfret fry breeding method. The ecological silvery pomfret fry breeding method specifically comprises the following steps: collecting fertilized eggs; carrying out hatching; rearing fries; and carrying out transitional cultivation with an artificial feed. Water exchange quantity and sewage suction rate are reduced in virtue of addition of probiotics and a living algae solution into the water in cooperation with adoption of a reasonable natural bait feeding way, so that a stable environment is provided for growth and development of the silver pomfret fries; and thus, mortality rate of the fries in an early stage of breeding is greatly reduced. Moreover, the probiotics are used incooperation with the natural baits in a later stage of breeding so as to improve adaptability of silvery pomfret juveniles to artificial baits, so that juvenile elimination rate is reduced in the stage with production cost decreased. Therefore, fry survival rates, as well as fry rearing and breeding densities, of the silvery pomfret are improved so as to finally overcome the problem of large-scalesilvery pomfret fry breeding.

Description

Technical field [0001] The invention belongs to the technical field of aquaculture, and specifically relates to an ecological seedling method for pomfret. Background technique [0002] Silver pomfret is one of the main marine economic fishes in my country. Its meat is delicious and has high nutritional value and market demand. However, due to overfishing and environmental degradation, my country's wild pomfret germplasm resources have appeared obvious Signs of decline, therefore, domestic researchers began to carry out the artificial breeding of silver pomfret. At present, Ningbo University has made breakthrough progress in the breeding of silver pomfret and completed large-scale breeding. However, it is still relatively difficult to artificially raise the seedlings of the silver pomfret, mainly due to the following problems: during the seedling process of the silver pomfret, it was found that the hatching rate of the silver pomfret eggs was low and the living and dead eggs were ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/10A01K61/17A23K10/22A23K10/30A23K20/158A23K50/80
CPCA01K61/10A01K61/17A23K10/22A23K10/30A23K20/158A23K50/80Y02A40/81Y02A40/818
Inventor 胡佳宝王亚军徐善良陶顺顺徐万土徐芳君杨阳顾玮玮匡思雯张曼孙弋博
Owner NINGBO UNIV
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