Loach hatching device and method

Abstract

The invention discloses a loach hatching device and method. The device comprises a barrel-shaped hatching container, and a circular aeration device is installed in the barrel-shaped hatching container; the aeration device and the barrel-shaped hatching container are coaxially arranged, and the diameter of the aeration device is 1 / 3 to 3 / 5 of the diameter of the barrel-shaped hatching container; the aeration device is communicated with an air inlet pipe, and the air inlet pipe is communicated with an air inlet pump and a heater; a tap water pipe is arranged above the barrel-shaped hatching container; a water changing outlet pipe is mounted at the upper part of the barrel-shaped hatching container, and a cleaning outlet pipe is mounted at the bottom of the barrel-shaped hatching container, and a vale is mounted on the cleaning outlet pipe; and a filter cover covers the water changing outlet pipe. According to the invention, the barrel-shaped hatching container is adopted, the coaxial aeration device with a small diameter is arranged, so that the aeration device can push water in the barrel-shaped hatching container to form circulation, the water amount in the container is increased,more loach eggs can be hatched, the temperature of the internal water is easier to maintain, the suspension state of the loach eggs is maintained, and the probability of friction between the eggs andthe container wall is reduced.

Description

technical field [0001] The invention belongs to the field of breeding, and in particular relates to a loach hatching device and method. Background technique [0002] When the loach hatches, the temperature requirement is very high. It needs to be hatched within 25-30 hours at a temperature of 18-25°C. Too early or too late will cause the loach to be deformed. In addition, when the loach hatches, ventilation is usually required for oxygen supply, but the loach eggs cannot settle during the hatching process. If the sediment accumulates at the bottom, it is easy to cause the loach eggs to stick to each other and cause hatching failure. Therefore, the existing loach hatching devices usually set Conical container 1, aeration tube 2 is set at the bottom of the cone to aerate, so that when the loach eggs sink, they will sink along the inner wall of the conical container, and when they reach the bottom, they will be resuspended by the airflow generated by aeration tube 2 . But the...

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Problems solved by technology

In addition, when the loach hatches, ventilation is usually required for oxygen supply, but the loach eggs cannot settle during the hatching process. If the sediment accumulates at the bottom, it is easy to cause the loach eggs to stick to each other and cause hatching failure. Therefore, the existing loach hatching devices usually set Conical container 1, aeration tube 2 is set at the bottom of the cone to aerate, so that when the loach eggs sink, they will sink along the inner wall of the conical container, and when they reach the bottom, they will be resuspended by the airflow generated by aeration tube 2

But the problem that it exists is: 1. because the container is conical, so its overall volume is less (conical volume is 1 / 3rd of cylindrical volume), and is not easy to make large volume, and can cause loach Most of the eggs are concentrated on the water surface, making the loach eggs too dense in a unit volume, resulting in the lack of oxygen in part of the water body, making it difficult for loach seedlings to hatch

2. The loach eggs in the conical container sink along the inner wall of the conical container, and are in sliding contact with the inner wall of the container for a long time, which is easy to wear the wall of the loach egg, resulting in a low hatching rate of the loach egg

3. Existing loach hatching devices usually use a heater for heating, which leads to high temperature around the heater, and it is easy to scald earthworm eggs under the condition of water flow

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