Microalgae compound living body bait used for raising fishes and production method thereof

Abstract

The invention discloses a microalgae compound living body bait used for raising fishes and a production method thereof. The microalgae compound living body bait is formed by microalgae algae liquid obtained by cultivating following microalgae seeds and mixing according to a cell quantity ratio: 10%-15% of chaetoceros muelleri, 15%-20% of phaeodactylum tricornutum bohlin, 10%-15% of isochrysis galbana parke, 10%-15% of haematococcus pluvialis, 30%-35% of chlorella pyrenoidosa and 15%-20% of pavlova viridis; and the total density is 1.2*10<5>-5.8*10<5> cells / millimeter. The production method comprises the following steps: (1) cultivating the microalgae seeds by using a photobioreactor to obtain the microalgae algae liquid with the cultivation density of 1.1*10<9>-5.6*10<10> cells / millimeter; and (2) preparing the microalgae compound living body bait from the microalgae algae liquid according to the cell quantity ratio to obtain the microalgae compound living body bait with the total density of 1.2*10<5>-5.8*10<5> cells / millimeter. According to the microalgae compound living body bait, the plurality of types of microalgae cells are prepared into the microalgae compound living body bait and the nutrition is balanced; and the survival rate of raising the fishes can be improved and the morbidity can be reduced.

Description

technical field [0001] The invention belongs to the technical field of microalgae biology, and in particular relates to a microalgae composite living bait for fish breeding and a production method thereof. Background technique [0002] Microalgae are rich in nutrients and comprehensive, and are the primary food for aquaculture animal seedlings. The protein quality of microalgae is higher, especially the content of essential amino acids is equivalent to or even better than that of fish meal, such as aspartic acid and glutamic acid can be as high as 7.1-12.9%, cysteine, methionine, tryptophan and histidine The content of amino acids is between 0.4-3.2%, and the content of other amino acids is between 3.2-13.5%. Polyunsaturated fatty acids (PUFA) are essential nutrients for the development of aquatic animal larvae, and microalgae are the primary producers of PUFA. Many microalgae, especially diatoms and golden algae, are rich in eicosapentaenoic acid (EPA), docosahexaenoic ac...

AI Technical Summary

Problems solved by technology

According to this method, based on the amount of seedlings of these three aquaculture animals in my country in 2010, 16,000 tons of dry weight of microalgae is required. However, the current production of commercialized microalgae in my country is still less than 10,000 tons. output is negligible

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