Method for purifying resting eggs of seawater branchionus plicatilis

Abstract

The invention provides a method for purifying resting eggs of seawater branchionus plicatilis. The method comprises the steps of feeding fresh water into a container, and then feeding a sodium hypochlorite disinfectant to enable available chlorine in the solution to reach 10-20PPm; putting the resting egg raw material of the seawater branchionus plicatilis into the container, mixing, and enabling the resting eggs of the branchionus plicatilis to be fully hydrated; stirring light impurities floating on the upper layer water surface, and then standing still for 30-60 minutes; transferring lower-layer heavy impurities, containing the resting eggs of the branchionus plicatilis and silt, in a mesh bag into a container, wherein the container is filled with high-concentration brine, and the volume of the brine is 10-15 times that of the transferred material; stirring the resting eggs of the branchionus plicatilis floating on the upper layer water surface to enable the silt heavy impurity mixed in the resting eggs of the branchionus plicatilis to be fully separated, and standing still; removing the heavy impurities at the lower layer under the resting eggs of the branchionus plicatilis at the upper layer, and using the mesh bag to receive the resting eggs of the branchionus plicatilis at the upper layer. After the method is adopted, the purification rate of the resting eggs of the seawater branchionus plicatilis reaches up to more than 98%.

Description

technical field [0001] The invention relates to the technical field of aquaculture. In particular, it relates to a method for purifying resting eggs of Brachionus plicata in seawater. Background technique [0002] With the rapid development of the aquaculture industry, seawater rotifers have become an indispensable fresh and live bait for aquaculture seedlings. At present, the domestic aquaculture industry mainly uses wild rotifers and dormant eggs of seawater rotifers as provenance. After hatching, artificial cultivation is carried out to provide aquatic seedlings as opening bait. In my country, especially in northern regions, due to the influence of temperature, only in summer and autumn there are wild rotifers, and the quality and supply of harvested rotifers are unstable, which affects the survival rate of seedlings. However, using seawater rotifer dormant eggs as the provenance, after hatching, and then artificially cultivating, most users use the harvested rotifer do...

AI Technical Summary

Problems solved by technology

In my country, especially in the northern regions, due to the influence of temperature, there are only wild rotifers in summer and autumn, and the quality and supply of harvested rotifers are unstable, which affects the survival rate of seedlings

However, using seawater rotifer dormant eggs as the provenance, after hatching, and then carrying out artificial cultivation, most users use the harvested rotifer dormant eggs to hatch directly without purification and disinfection, so the hatched rotifer provenance Contains a large amount of impurities and bacteria, which not only affects the cultivation of rotifers but also affects the survival rate of aquatic seedlings