Preparation method of compound feed specially used for aquacultural breeding of prawns

Abstract

The invention belongs to the field of feeds and relates to a preparation method of a compound feed specially used for aquacultural breeding of prawns. The invention provides a preparation method of a feed especially for high-salinity breeding of penaeus vannamei. The feed can satisfy demand on nutrition for the penaeus vannamei under high salinity (higher than 3%), is good in stability in water, has strong anti-stress capability, is high in survival rate and accelerates growth, is low in feed coefficient, and is economical and practical, thereby solving the problems of slow growth, high diseases incidence and low survival rate of the penaeus vannamei under high salinity stress breeding. The feed can promote healthy development of the aquacultural breeding of prawns.

Description

technical field [0001] The invention belongs to the field of feed, and in particular relates to a method for preparing a special compound feed for shrimp aquaculture. Background technique [0002] In recent years, the aquaculture area of ​​Penaeus vannamei has rapidly expanded in my country, and the total output and total benefit have also increased significantly. In my country's vannamei aquaculture area, it is mainly divided into seawater high-salinity aquaculture (such as Zhanjiang and Hainan in Guangdong), freshwater low-salinity aquaculture (such as Guangdong's Pearl River Delta) and brackish water aquaculture. Under the scorching sun in summer, with the evaporation of water, the salinity will continue to rise, which will greatly change the water environment, especially in Hainan. [0003] The adaptation of shrimp to the environment is generally osmotic adjustment around its isotonic point, and osmotic adjustment is a physiological process that requires energy. Penaeu...

AI Technical Summary

Problems solved by technology

When the salinity is higher than 26‰, because there is a large osmotic pressure gradient difference inside and outside the body, Penaeus vannamei needs to consume more energy to maintain its own osmotic balance, which will affect its growth to a certain extent

[0004] At the same time, under high salinity, the reproduction of harmful microorganisms such as Vibrio is very rapid, and the physique of Penaeus vannamei declines, and it is easy to get sick

At the same time, under the stress of high salinity, the feed intake of Penaeus vannamei slows down, causing some feed to be dissolved and lost in water, and the enzyme activity in the shrimp body decreases, which leads to an increase in the feed coefficient. Pollution is becoming more and more serious, which leads to frequent occurrence of diseases, which seriously plague the healthy development of the shrimp farming industry