Fry breeding device

Abstract

The invention aims to achieve the technical purpose of providing a fry breeding device for improving the laying density of fry, breeding the fry in advance in winter and facilitating the circulation of pond water along pond walls, relates to the field of aquaculture, in particular to a fry breeding device. The fry breeding device includes a breeding pond, the breeding pond includes a pond bottom and the pond walls, and the fry breeding device is provided with a control device; the pool walls are enclosed in a circle, and the breeding pond is provided with a water inlet pipe, a heater, a waterdraining pipe and a temperature monitor; the heater and the temperature monitor are connected with the control device, the outlet of the water inlet pipe is provided with a spraying head, the sprayinghead is higher than the water level of the pond and the water outlet direction is tangent to the pool walls; the pond bottom is inclined relative to the water level of the pond, and the water draining pipe is arranged at a lowest position of the bottom of the pond. By adopting the fry breeding device, the fry grow fast, the survival rate is high, and the breeding efficiency can be improved.

Description

technical field [0001] The invention relates to the field of aquaculture, in particular to a fry nursery device. Background technique [0002] Fish is one of the important food materials for human beings. It has high nutritional value and economic value. The use of artificial large-scale farming will be the trend of fishery development in the future. In the process of artificial breeding of fish, fry seedlings have high requirements on the water environment due to their low resistance, such as: water quality, water temperature, water body oxygen content, etc. The breeding of fry has always been a technical difficulty. The traditional way of raising seedlings is: put the newly hatched fry in the nursery pond for separate cultivation according to the ecological carrying capacity of the nursery pond. Traditional nursery ponds generally adopt such a structure: the nursery pond is equipped with pool water, the nursery pond includes the bottom and the wall of the pond, the walls ...

AI Technical Summary

Problems solved by technology

The traditional nursery pond has the following disadvantages: the fish excrement and food residues in the nursery pond are deposited at the bottom of the fish pond and cannot be discharged. The decomposition of the sediment will consume the oxygen content in the fish pond water for a long time and affect the water quality. The ecological carrying capacity of the nursery pond is low. The seedlings are relatively low, and the seedlings are prone to disease; the nursery pond cannot maintain the water temperature, and the fish breeding work can only be carried out when the temperature is suitable in spring, and the breeding cycle is long; the nursery pond is square, which is not conducive to the circulation of water along the wall of the pond, and the fluidity of the pond water is poor

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