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Low-fish-meal environment-friendly prawn feed

An environment-friendly shrimp feed technology, which is applied in animal feed, animal feed, food processing, etc., can solve problems such as the impact on the health of farmed animals, limit the proportion of addition, and decline in production performance, so as to maintain water quality and improve survival rate. , the effect of improving the survival rate

Pending Publication Date: 2022-05-13
GUANGDONG INST OF MICROBIOLOGY GUANGDONG DETECTION CENT OF MICROBIOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the lack of one or several limiting amino acids and various anti-nutritional factors, the high proportion of vegetable protein raw materials in aquatic feed (especially low fishmeal proportion aquatic feed) often affects the health of farmed animals. It will affect the production performance, and then limit the proportion of its addition in the feed.

Method used

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  • Low-fish-meal environment-friendly prawn feed
  • Low-fish-meal environment-friendly prawn feed
  • Low-fish-meal environment-friendly prawn feed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: the optimal comparison of fermented feed bacterial classification

[0031] Design two combinations of fermentation strains (strain combination 1: Bacillus subtilis, Saccharomyces cerevisiae, Enterococcus faecalis and Lactobacillus plantarum; strain combination 2: Aspergillus niger, Bacillus subtilis, Saccharomyces cerevisiae, Enterococcus faecalis and Lactobacillus plantarum ; Comparing the improvement effect of two different bacterial strain combinations on the nutritional characteristics of shrimp compound feed.

[0032] The methods for the activation of fermentation strains and the preparation of primary fermentation liquid are respectively:

[0033] (1) Preparation of Aspergillus niger fermented seed liquid: After diluting Aspergillus niger powder with sterile water, inoculate it into sterilized PDA liquid medium and culture it at 28° C. for 24 hours to obtain the first-grade Aspergillus niger seed liquid. Preparation of PAD liquid medium: 200 g of pe...

Embodiment 2

[0049] The preparation of prawn fermented feed (CN 108157673 A) in the early stage uses Lactobacillus plantarum and Lactobacillus reuteri as the combination of fermented lactic acid bacteria strains, which can improve the nutritional value of the feed to a certain extent. In order to explore whether the fermentation effect of bacterial classification combinations such as Aspergillus niger and Enterococcus faecalis is better than bacterial classification combinations such as Aspergillus niger and Lactobacillus reuteri in Example 1, two kinds of fermentation bacterial classification combinations are designed (bacterial classification combination 1: Aspergillus niger , Bacillus subtilis, Saccharomyces cerevisiae, Lactobacillus plantarum and Lactobacillus reuteri; strain combination 2: Aspergillus niger, Bacillus subtilis, Saccharomyces cerevisiae, Lactobacillus plantarum and Enterococcus faecalis), comparing two different strain Enhancement effect of prawn compound feed on nutriti...

Embodiment 3

[0061] Embodiment 3 fermented feed is conducive to the maintenance of good water quality indicators

[0062] About 0.12g (about 4167 heads) of Penaeus vannamei was used as the breeding object, and the breeding experiment was carried out for a period of 56 days, and the stocking density was about 833 fish / m 3 (the length and width of the breeding pond are 5.5m, the water depth is 1.0m, and about 25000 seedlings are placed), two groups of experiments are designed, one group is fed with 40% unfermented commercial feed (recorded as P group), and the other group Feed the fermented feed prepared with strain combination 2 as the fermented strain in Example 1 (the fishmeal content is 15%, denoted as group F), and design two parallel culture ponds for each group. During the whole experiment period, except for the different feeds, the other treatments of the two groups were the same. During the experiment period, aquaculture water samples were regularly collected to monitor changes in ...

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Abstract

The invention discloses a low-fish-meal environment-friendly prawn feed which is prepared by the following steps: by taking fish meal, soybean meal, corn grit, wheat bran and the like as main raw materials and aspergillus niger, bacillus subtilis, saccharomyces cerevisiae, enterococcus faecalis and lactobacillus plantarum as fermentation strains, carrying out aerobic and anaerobic mixed fermentation at first and then carrying out anaerobic fermentation to obtain the low-fish-meal environment-friendly prawn feed. The nutritional value of the prawn feed taking a plant source protein raw material as a main protein source can be greatly improved; meanwhile, the prepared prawn fermented feed has a certain improvement effect on a culture water body, physical and chemical indexes such as ammonia nitrogen, nitrite, pH and total alkalinity of the water body can be maintained, and the survival rate of cultured prawns can be remarkably increased; the feed prepared by the invention can remarkably improve the lower antioxidant capacity (oxidative stress tolerance) of a culture medium, remarkably improve the intestinal health state of prawns, maintain the steady state of intestinal microorganisms, reduce the relative abundance of potential pathogenic microorganisms in intestinal tracts and improve the disease-resistant (immune) function of the intestinal microorganisms.

Description

Technical field: [0001] The invention relates to the field of prawn feed, in particular to an environment-friendly low-fishmeal prawn feed. Background technique: [0002] The current increase in the production of shrimp farming is mostly due to the transformation of the traditional farming model to a high-density and intensive farming model. However, while intensive farming is efficient and high-yielding, due to high stocking density, difficult management, high incidence of disease, and risks beyond the controllable range of human beings. The prevention and control of diseases in the high-density intensive farming mode has become a bottleneck problem in the aquaculture industry. At present, in order to prevent and control the outbreak of diseases in the intensive culture of prawns, the most adopted method is to mix and feed the existing hepatoprotective and antibacterial products on the market during the breeding process, and even excessive use of furazolidone and chloramph...

Claims

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Application Information

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IPC IPC(8): A23K50/80A23K10/12A23K10/18A23K10/37A23K10/22A23K10/30
CPCA23K50/80A23K10/12A23K10/18A23K10/37A23K10/22A23K10/30A23V2400/169Y02P60/87
Inventor 成艳波许国焕张丽李志朋苏奎英
Owner GUANGDONG INST OF MICROBIOLOGY GUANGDONG DETECTION CENT OF MICROBIOLOGY