Coldwater fish high-density hatcher

Abstract

The invention relates to a coldwater fish high-density hatcher which comprises a hatching trough, hatching boxes, a water inlet tube and a water outlet tube, wherein the hatching boxes are arranged in the hatching trough side by side, and the water inlet tube and the water outlet tube are communicated with the hatching trough; the water inlet tube and the water outlet tube are respectively arranged at the front end and tail end of the hatching trough; the bottom plate of each hatching box is provided with permeable holes, and the rear side plate of each hatching box along the water flow direction is provided with water outlet holes and a hatching box baffle fixedly connected with the hatching box; and each hatching box is internally sleeved with a sieve tulle. The coldwater fish high-density hatcher has simple structure and low construction cost, can carry out high-density hatching, occupies small production space, saves energy, is easy to manage and is simple and convenient to operate; 500-1000 g of oosperms can be placed in each hatching trough; and 5-year experiments prove that the hatching rate is above 70%, and the average hatching rate of the oosperms can be more than 85% when the weight of the oosperms in each box is 700-800 g.

Description

Technical field [0001] The invention relates to a high-density incubator for cold water fish. Background technique [0002] Because of its unique reproductive physiological characteristics, cold water fish need low temperature during the incubation of fertilized eggs, so the incubation time is longer, up to 40 days. Traditional cold-water fish incubators mostly use cement pool water for incubation or funnel flushing. The cement pond incubator takes up a lot of space, is difficult to operate and observe, and is easy to form dead corners. Long-term incubation will significantly reduce the hatching rate; the funnel-type flushing water hatching disease prevention and control is not easy to operate and the hatching density is low; the common point of the two is the difficulty of seedling emergence. High energy consumption. Summary of the invention [0003] The purpose of the present invention is to provide a cold-water fish incubator with high hatching density, small occupation works...

AI Technical Summary

Problems solved by technology

The cement pool incubator takes up a lot of space, is difficult to operate and observe, and is easy to form dead angles. Long-term incubation will significantly reduce the hatching rate; the funnel-type flushing water hatching disease control is not easy to operate and the hatching density is small; the common point of the two is that it is difficult to emerge. High energy consumption

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