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Aquaculture feed and preparation method thereof

A technology for aquaculture and feed, which is applied in the field of aquaculture feed and its preparation, can solve the problems of increased aquaculture waste and poor water quality, and achieve the effects of reasonable feed formula, improved synthesis capacity, and improved oxygen uptake capacity

Pending Publication Date: 2022-02-08
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High-density breeding increases the amount of feeding, and the amount of breeding waste in the water increases, which makes the water quality worse

Method used

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  • Aquaculture feed and preparation method thereof
  • Aquaculture feed and preparation method thereof
  • Aquaculture feed and preparation method thereof

Examples

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preparation example Construction

[0032] Wherein, the preparation method of the microbial fermented feed comprises: inoculating Cordyceps fungus and Schizochytrium fungus into the fermentation medium for fermentation culture, then performing solid-liquid separation on the fermentation culture product, and drying the separated solid to obtain The microorganisms ferment feed.

[0033] In the course of the research, the inventors found that using the microbial fermented feed obtained by the co-fermentation of Cordyceps and Schizochytrium, in the microbial fermentation process, the co-fermentation of Cordyceps and Schizochytrium can effectively improve the synthesis of oil in the fermentation process ability, thereby increasing the oil content in the fermented product. Moreover, it can provide a variety of biologically active substances during the co-fermentation process of Cordyceps and Schizochytrium, and can work together with bean cake, rapeseed cake, sweet potato flour, corn flour, sodium chloride, and vitami...

Embodiment 1

[0064](1) Inoculate Cordyceps militaris and Schizochytrium HX-308 into seed medium (yeast extract 8g / L, peptone 20g / L and D-glucose 20g / L, pH 6 ) in a shaking table (rotating speed 220rpm) for 6 days to obtain Cordyceps militaris seed liquid and Schizochytrium HX-308 seed liquid, and then above-mentioned Cordyceps militaris seed liquid (inoculum size 5%) and Schizochytrium HX-308 seed solution (inoculum size 5%) was inoculated into fermentation medium (yeast extract 8g / L, peptone 20g / L, D-glucose 20g / L, sodium glutamate 10g / L, sulfuric acid heptahydrate Magnesium 5g / L and potassium dihydrogen phosphate 7g / L, pH 6) in a shaker (rotational speed 220rpm) for 12 days; the fermentation product was subjected to solid-liquid separation, and then the separated solid was frozen at -40°C Dry for 24 hours, and make the particle size less than or equal to 0.2 μm by jet milling; obtain microbial fermented feed.

[0065] (2) Mix 3kg microbial fermented feed, 2kg bean cake, 1kg rapeseed cak...

Embodiment 2

[0067] (1) Inoculate Cordyceps militaris and Schizochytrium HX-308 into seed medium (yeast extract 8g / L, peptone 20g / L and D-glucose 20g / L, pH 6 ) in a shaking table (rotating speed 180rpm) for 4 days to obtain Cordyceps militaris seed liquid and Schizochytrium HX-308 seed liquid, and then above-mentioned Cordyceps militaris seed liquid (inoculum size 3%) and Schizochytrium HX-308 seed liquid (inoculum size 9%) was inoculated into fermentation medium (yeast extract 8g / L, peptone 20g / L, D-glucose 20g / L, sodium glutamate 10g / L, sulfuric acid heptahydrate Magnesium 5g / L and potassium dihydrogen phosphate 7g / L, pH 6) in a shaker (rotation speed 180rpm) for 16 days; the fermentation product was subjected to solid-liquid separation, and then the separated solid was frozen at -20°C Dry for 48 hours, and make the particle size less than or equal to 0.2 μm by jet milling; obtain microbial fermented feed.

[0068] (2) Mix 3kg microbial fermented feed, 1.5kg bean cake, 1.2kg rapeseed ca...

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Abstract

The invention relates to the technical field of feeds, and discloses an aquaculture feed and a preparation method thereof. The feed contains microbial fermented feed, bean cakes, rape seed cakes, sweet potato powder, corn flour, sodium chloride and vitamin B6. The preparation method of the microbial fermented feed comprises the steps: inoculating cordyceps taishanensis and schizochytrium limacinum into a fermentation culture medium for fermentation, then carrying out solid-liquid separation on a fermentation product, and carrying out drying treatment on the separated solid to obtain the microbial fermented feed. Under the same aquaculture condition, the usage amount of the aquaculture feed is obviously reduced, and the aquaculture density can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of feed, in particular to an aquaculture feed and a preparation method thereof. Background technique [0002] my country is currently the world's largest aquatic product breeding country, and aquaculture accounts for about 70% of the world's total aquaculture. Aquafeed is bait specially provided for aquatic animal breeding. According to feeding species, aquatic feed can be divided into fish feed, shrimp feed and crab feed; according to feed characteristics, it can be divided into compound feed, concentrated feed and premixed feed. The raw materials for the production of aquatic feed are mainly composed of fishmeal, grain raw materials and oil, and fishmeal and grain raw materials often account for more than 50% of the feed cost. [0003] High-density intensification is an important feature of current aquaculture. High-density breeding increases the amount of feeding, and the amount of breeding waste in th...

Claims

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Application Information

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IPC IPC(8): A23K50/80A23K10/12A23K10/37A23K10/30A23K20/22A23K20/174A23K40/10
CPCA23K50/80A23K10/12A23K10/37A23K10/30A23K20/22A23K20/174A23K40/10Y02A40/818Y02P60/87
Inventor 郭东升袁莉牟欣娅王玥佟令令杜远航刘孟珍陈子雷张怡丹李郡娅杨清昊王棉
Owner NANJING NORMAL UNIVERSITY
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