Preparation method of crayfish feed with rice bran polysaccharide

A technology of rice bran polysaccharide and lobster, which is applied in the field of crayfish feed preparation with rice bran polysaccharide, can solve the problems affecting crayfish's digestion and absorption of feed, affecting crayfish intestinal structure, etc., achieve strong food attraction and palatability, and improve Anti-stress ability, effect of reducing hydrolysis time

Inactive Publication Date: 2018-05-18
浦江县昂宝生物技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, rapeseed meal and bean cake powder in the inventive method are mixed into the feed without fermentation, and anti-nutritional factors such as urease, trypsin inhibitor, and aflatoxin in the cake will affect the intestinal structure of the crayfish and affect the crayfish's effect on the feed. digestion and absorption

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The crayfish feed preparation method that is added with rice bran polysaccharide comprises the following steps:

[0017] 1) After dehydrating and pulverizing the rice bran meal, pass it through a 20-mesh sieve, control the moisture content of the material to 20%, extrude and puff it under the conditions of extrusion temperature 115°C and screw speed 120r / min, dry the extrudate and crush it, pass through 40 Mesh sieve; add distilled water according to the material-liquid ratio of 1:3, add the compound enzyme of substrate weight 0.8%, the compound enzyme is the cellulase and the pectinase that the mass ratio is 1:1.5, at a temperature of 40°C and a pH of Enzymolysis under the condition of 4.0 for 40 minutes; adjust the temperature of the enzymolysis solution to 50°C, the ultrasonic frequency is 30kHz, and the ultrasonic density is 0.45W / cm 2 Ultrasonic treatment for 20 minutes under the condition of 1000r / min, centrifuge at 1000r / min to get the supernatant, after alcohol ...

Embodiment 2

[0019] The preparation method of crayfish feed added with rice bran polysaccharide includes: extraction of rice bran polysaccharide, hydrolysis of tilapia leftovers, double enzyme hydrolysis to prepare soybean meal short peptide, and compounding, specifically including the following steps:

[0020]1) Extraction of rice bran polysaccharide: dehydrate and pulverize the rice bran meal, pass through a 40-mesh sieve, control the moisture content of the material to 25%, extrude and expand at the extrusion temperature of 120°C and the screw speed of 140r / min, and dry the extrudate After pulverizing, cross 60 mesh sieves; Add distilled water as 1:5 according to material-liquid ratio, add the compound enzyme of substrate weight 1.0%, compound enzyme is the cellulase and pectinase that mass ratio is 1:2.0, at temperature Enzymolysis at 45°C and pH 4.5 for 45 minutes; adjust the temperature of the enzymolysis solution to 52°C, at an ultrasonic frequency of 40kHz and an ultrasonic density ...

Embodiment 3

[0025] The preparation method of crayfish feed added with rice bran polysaccharide includes: extraction of rice bran polysaccharide, hydrolysis of tilapia leftovers, double enzyme hydrolysis to prepare soybean meal short peptide, and compounding, specifically including the following steps:

[0026] Extraction of rice bran polysaccharide: Dehydrate and pulverize the rice bran meal and pass it through a 30-mesh sieve, control the moisture content of the material to 22%, extrude and expand at the extrusion temperature of 118°C and the screw speed of 130r / min, dry the extrudate and crush it , pass through a 50-mesh sieve; add distilled water according to the ratio of material to liquid at 1:4, add a compound enzyme with a weight of 0.9% of the substrate, the compound enzyme is cellulase and pectinase with a mass ratio of 1:1.8, and the temperature is 44°C , Enzymolysis for 40 minutes under the condition of pH 4.2; adjust the temperature of the enzymolysis solution to 50°C, at an ul...

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PUM

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Abstract

The invention discloses a preparation method of a crayfish feed with rice bran polysaccharide. The preparation method comprises the following steps of extracting the rice bran polysaccharide: extruding and puffing rice bran meal, performing enzymolysis with complex enzymes, then performing ultrasonic processing and performing ethanol precipitation to prepare the rice bran polysaccharide; hydrolyzing Tilapia offal: fermenting the Tilapia offal with natto bacillus, and performing hydrolyzing to prepare antibacterial grease peptide; preparing soybean meal short chain polypeptide through hydrolyzing with two enzymes; and performing blending: blending the rice bran polysaccharide with the antibacterial grease peptide, the soybean meal short chain polypeptide and other ingredients to prepare thecrayfish feed. The preparation method has the beneficial effects of being reasonable in compounding ratio and comprehensive and rich in nutrients, and contains nutrient substances of protein, amino acids, fatty acids, short chain polypeptide and the like required for growth and development of crayfish. The rice bran polysaccharide can greatly strengthen the immunocompetence of the crayfish, the stress resistance of the crayfish can be improved, and the constitutions can be strengthened. The feed also has good food calling properties and palatability, and can promote the ingestion of the crayfish, improve the raising efficiency and reduce the breeding cost.

Description

technical field [0001] The invention relates to the field of crayfish feed, in particular to a method for preparing crayfish feed added with rice bran polysaccharide. technical background [0002] Crayfish, also known as Procambarus clarkii, red crayfish and freshwater crayfish. Shrimp-like in shape but with a hard shell, the adult is about 5.6-11.9 cm long, dark red, the carapace part is nearly black, and there is a wedge-shaped stripe on the back of the abdomen. The body of juvenile shrimp is uniform gray, sometimes with black ripples, and the claws are long and narrow. The middle part of the carapace is not separated by mesh-like gaps, there are obvious grains on the carapace, and the frontal sword has lateral spines or the frontal sword end has notches. It is a freshwater economical shrimp, which is widely welcomed by people because of its delicious meat. Because of its omnivorous nature, fast growth rate and strong adaptability, it forms an absolute competitive advan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K50/80A23K20/163A23K20/147A23K10/22A23K10/30A23K20/158A23K40/10A23K10/38A23K10/20A23K10/28
CPCA23K10/20A23K10/22A23K10/28A23K10/30A23K10/38A23K20/147A23K20/158A23K20/163A23K40/10A23K50/80Y02A40/818Y02P60/87
Inventor 邢晓丹
Owner 浦江县昂宝生物技术有限公司
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