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Feed additive capable of inhibiting urease activity and its prepn

A technology for feed additive and urease activity, which is applied in the field of feed additive for inhibiting urease activity and its preparation, can solve the problems of increasing the residual amount of fecal and urine mixture, instability and the like, and achieves significant economic and social benefits, stable product quality and composition. Stable performance

Inactive Publication Date: 2008-12-24
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the active ingredients in plants often have good effects and strong activity, and at the same time, they are unstable or have an odor that some animals do not like, and the effect is not ideal in practical applications. Deodorizing feed additive, the active ingredient extracted from the plant is coated, it can significantly inhibit the activity of urease, increase the total nitrogen retention in the feces and urine mixture, reduce the emission of ammonia and other odors to the environment, and improve the air quality of breeding. Improve animal performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The B-cyclodextrin is made into an aqueous solution of wall material, and the core material of cinnamaldehyde and allicin oil in a ratio of 1:0.01 is added while stirring, so that the ratio of core material to wall material is 1ml:8g, and the solid content of the mixed solution is 15%. Heat the mixed raw materials to 60°C for high-pressure homogenization, the homogenization pressure is 35MPa, and a uniform and stable raw material solution is formed after homogenization. raw material solution in Mini Spray Dryer B-191 is an internal atomization dehydration machine, operating parameters: inlet air temperature 170°C, outlet air temperature 80°C, feed rate 25ml / h, nozzle diameter 0.15mm, nozzle pressure 1.8×10 5 Pa. The spray-dried product is a feed additive that effectively inhibits urease activity.

Embodiment 2

[0016] The β-cyclodextrin is made into an aqueous solution of the wall material, and the core material of cinnamaldehyde and allicin oil in a ratio of 1:1 is added while stirring, so that the ratio of the core material to the wall material is 1ml: 10g, and the solid content of the mixed solution is 20%. Heat the mixed raw materials to 60°C for high-pressure homogenization, the homogenization pressure is 40MPa, and a uniform and stable raw material solution is formed after homogenization. The raw material liquid is atomized and dehydrated in a large centrifugal spray dryer LPG-150, operating parameters: air inlet temperature 180°C, air outlet temperature 90°C, feed rate 170kg / h, nozzle diameter 0.15mm, nozzle pressure 1.8×10 5 Pa. The spray-dried product is a feed additive that effectively inhibits urease activity.

Embodiment 3

[0018] The gelatin is made into an aqueous solution of the wall material, and the core material of cinnamaldehyde and allicin oil in a ratio of 1:0.01 is added while stirring, so that the ratio of the core material to the wall material is 1ml:8g, and the solid content of the mixed solution is 15%. Heat the mixed raw materials to 60°C for high-pressure homogenization, the homogenization pressure is 35MPa, and a uniform and stable raw material solution is formed after homogenization. raw material solution in Mini Spray Dryer B-191 is an internal atomization dehydration machine, operating parameters: inlet air temperature 170°C, outlet air temperature 80°C, feed rate 25ml / h, nozzle diameter 0.15mm, nozzle pressure 1.8×10 5 Pa. The spray-dried product is a feed additive that effectively inhibits urease activity.

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Abstract

The present invention discloses one kind of feed additive capable of inhibiting urease activity and its preparation process. The preparation process includes compounding wall material solution with beta-cyclodextrin, gelatin and / or sodium carboxymethyl cellulose, adding urease inhibitor as core material while stirring to form mixture liquid with solid content of 15-20 %; heating the mixture to 60-65 deg.c and homogenizing at high pressure of 35-40 MPa to form homogeneous stable material liquid; spray drying the material liquid at material feeding temperature of 60-65 deg.c, air intake temperature of 170-180 deg.c, air outlet temperature of 80-90 deg.c, nozzle diameter of 0.15 mm and nozzle pressure of 1.8x10<5> Pa. The feed additive can inhibit activity of urease, reduce exhausted ammonia and other bad smell gases, raise the producibility of animal and reduce the environmental pollution caused by livestock breeding.

Description

technical field [0001] The invention relates to a feed additive for inhibiting urease activity and a preparation method thereof. Background technique [0002] With the continuous development of the aquaculture industry, the impact of the excrement and odor produced by the aquaculture industry on the environment is becoming more and more serious. In order to reduce the negative effects brought by the breeding industry, the research on reducing the emission of ammonia and other odors by various means has become a research hotspot of environmental nutrition scholars at home and abroad. However, there are currently more urease inhibitors in China (such as diamide phosphate, triamide phosphate, triamidobenzene phosphate, cyclohexanetriamide phosphate, hydroxamic acid and its derivatives acetohydroxamic acid, biphenol, benzoquinone, etc.) ) efficiency is not high, some also have great harm to human body or environment. Therefore, the plant-based deodorant that is highly efficien...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23K1/18A23K20/00A23L7/109
Inventor 陈安国洪奇华杨彩梅
Owner ZHEJIANG UNIV