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] Due to their unique reproductive physiological characteristics, cold-water fish require low temperature during the hatching of fertilized eggs, so the hatching time is longer, up to 40 days or more. The traditional cold water fish incubator mostly adopts cement pool running water hatching or funnel flushing hatching. 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. Contents of the invention [0003] The object of the present invention is to provide a cold-water fish incubator with high hatching density, small occupa...

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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