Breeding device and method high in feed utilization rate

Abstract

The invention discloses a breeding device and method high in feed utilization rate. The breeding device comprises a net rack, a cylindrical main net, a fixing plate, an upright column, an upper net folding mechanism and a lower net folding mechanism, wherein the main net is arranged on the net rack and provided with an upper opening; the fixing plate is arranged in a soil layer below the bottom face of the main net; the upright column is arranged on the fixing plate and penetrates through the bottom face of the main net; the upper net folding mechanism and the lower net folding mechanism are arranged on the lower portion of the upright column; a tension spring is arranged between the lower net folding mechanism and the fixing plate, a first air cylinder is arranged on the fixing plate, anda telescopic rod of the first air cylinder is in contact with the lower net folding mechanism. The device further comprises a cylindrical auxiliary net which is located in the main net and provided with an upper opening; the mesh size of the auxiliary net is smaller than that of feed particles, and the lower edge of the auxiliary net is connected with the lower net folding mechanism and a plurality of lower coiling devices arranged at the lower part of the net rack respectively. The device has the advantage that waste of the feed particles is effectively avoided, it is ensured that the feed particles are kept clean and sanitary, and the utilization rate of feed is effectively increased.

Description

technical field [0001] The invention relates to the technical field of net cages, in particular to a breeding device and method with high feed utilization rate. Background technique [0002] With the development of the aquaculture industry, cage culture is becoming more and more popular. Fish culture in cages is a highly intensive farming method that applies the technology of dense stocking and intensive farming in ponds to large water surfaces with superior environmental conditions to achieve high yields. It can save the land and labor needed to excavate fish ponds. After investment, the return is quick. Fish culture in net cages can make full use of water and erbium organisms. It implements polyculture and close culture, with high survival rate, which can achieve the purpose of creating high yield and short feeding cycle. , easy to manage, flexible and easy to operate. However, because the water flow is flowing, sometimes the flow is fast. The feed at the bottom of the bo...

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Problems solved by technology

[0003] The invention purpose of the present invention is to provide a kind of breeding device and method with high feed utilization rate in order to overcome the deficiency of low feed utilization rate in the prior art

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