Pretreatment method for efficiently improving ova hatching rate in good year

Abstract

The invention discloses a pretreatment method for efficiently improving ova hatching rate in a good year, and belongs to the technical field of aquaculture. The method includes steps of mixing bleaching water with a certain concentration and a certain quantity of tablet sodium hydroxide according to a certain ratio, and preparing to be a mixed solution; then stirring the mixed solution until the sodium hydroxide is completely dissolved, and then adding to the ova in good year after being soaked in fresh water; stirring while controlling temperature through adding trash ice; through this process, completely oxidizing and removing the outer shell of the ova in good year; after cleaning, adding to a seawater hatching pond to hatch; the ova in good year after being treated by the pretreatment method only has an embryo coated by a hatching film for being free from the binding of the outer shell, therefore, it is easier to hatch the nauplius; the hatching rate and the hatching speed are obviously improved.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, in particular to a pretreatment method for efficiently improving the hatching rate of Artemia eggs. Background technique [0002] Brine shrimp, a small crustacean widely distributed around the world and tolerant to high salinity. Brine shrimp eggs are dormant eggs produced by brine shrimp. There are more than 100 strains of brine shrimp eggs recorded in the world. The brine shrimp nauplius has a large number of eggs and is rich in protein and fat (note: the protein contains about 60% and the fat contains about 20%), and its adult body also contains high nutrients. Therefore, brine shrimp, as an important biological bait, has been widely valued by people. At present, brine shrimp is used as the source of active biological bait for the breeding of more than 85% of aquaculture animals in the world. However, the current production technology of Artemia has always been based on a simple and rou...

AI Technical Summary

Problems solved by technology

However, the current production technology of Artemia has always been based on a simple and rough fool-like production model, resulting in the hatching rate of eggs hovering at 50%-70% in the industry, and the hatching rate is low in the general 24h incubation cycle, so Raised production costs

With the increasing development of the aquaculture industry, the breeding industry is becoming more and more difficult, the number of seedlings is low, the quality is poor, the cost of production is getting higher and higher, and the profit margin is getting smaller and smaller. In the segment of Artemia bait that occupies a large part of the cost , if the cost can be kept low, it will be a great contribution to the nursery industry. However, as the price level of eggs has gradually increased in recent years, improving the hatching rate of eggs has become the most urgent and important problem.