LU505382B1 - A bioregulated release type urea complex and its manufacturing process - Google Patents

Abstract

The present invention discloses a bioregulated release urea complex comprising: urea, floating carrier and binder mixed and granulated, encapsulated with an impermeable membrane; the specific gravity of the granule after encapsulation is less than 1 g/cm3, and the floating carrier, binder and membrane can be digested and absorbed by ruminants; It is prepared by 1) mixing urea, fibrous feed, grass meal or gluten-based feed and stearic acid in a certain ratio to prepare a granule; 2) heating stearic acid to a liquid state; 3) taking the granule from step 1) and wrapping it by an encapsulation machine, the membrane being the stearic acid in the liquid state from step 2); encapsulating three times; and 4) cooling to obtain a bioregulated urea complex. The product of the present invention, which has a low density relative to the rumen fluid, floats completely with the roughage in the upper layer of the rumen fluid and can be released little or not at all for 16 hours, thereby maximizing the use of urea in ruminants.

Description

A bioregulated release type urea complex and its LU505382

production method

Technical part

The present invention belongs to the technical field of feed additives and relates in particular to a urea complex of the bioregulated release type and its preparation process.

Technology in the background

In nature there are many lower microorganisms (rumen microorganisms,

rhizobacteria, etc.) that can convert non-fiber nitrogen into a nitrogen source that can be utilized by plants and animals, and this opens up new avenues for

Protein supply to animals, especially ruminants. The additional use of non-protein nitrogen in ruminants can reduce the overall consumption of protein feed. China is severely deficient in protein, imports reach tens of millions of tons per year, if China has 10 million dairy cows, 30 million cattle, 50

Million sheep in accordance with the use of urea at 200g/head of

Cattle/day, 50g/day/a sheep, the annual consumption of urea complex of 3.8325

Million tons per year can save 19.1625 million tons of soy flour use per

year. For this reason, the use of non-protein-based nitrogen feeds in ruminant feeding is mandatory.

However, when urea is fed to ruminants alone, it is broken down in the rumen into

Ammonia is broken down. Since ammonia is produced too quickly to be broken down by the microorganisms

Time to be used, it can lead to poisoning in cows; in practice, 50 g

Urea can kill a cow. For this reason, it is important to feed urea to

ruminants, taking into account both the speed and efficiency of microbial utilisation while not causing adverse effects on ruminants.

Most urea-based feeds on the market for

Ruminants are slow release products, i.e. the relative

Urea release rate is controlled by the slow release principle. Most of these products have a high density and are influenced by rumen peristalsis, which together with the concentrate very quickly sinks into the bottom of the stomach and follows the concentrate on the digestive path through the lobe stomach, the true stomach and the small intestine. For this reason, the release time of such slow release products should not be more than 30 minutes, because if the time is too long, urea can enter the stomach along with the feed.

small intestine, which can directly lead to urea poisoning in ruminants. At the same time, slowly release 30 minutes, will certainly reduce the use of urea

Products, usually most of these products are controlled by the

Amount of urea fed into the rumen to control the absolute release of urea, once the amount of feeding is too large, it is very easy to cause urea poisoning in

ruminants.

In combination with the rumination speed of different animals, the product is fed in the appropriate concentration to ensure the synchronization of carbon and

To ensure nitrogen supply in the rumen and the synchronous supply of carbon and

Nitrogen to the microorganisms in the rumen, which promotes the vitality of the rumen microbes and the synthesis of microbial bacterial proteins and thus reduces the feed costs of the

Ruminant breeding reduces. LU505382

Content of the invention

The purpose of the present invention is to provide a urea complex of the bioregulated release type and a process for its preparation in order to facilitate the synchronous supply of carbon and nitrogen to the microorganisms in the rumen of

ruminants and to prevent urea poisoning in ruminants.

Fin Urea complex of the bioregulated release type includes: urea, floating carrier and binder, mixed and granulated, coated with a waterproof

Membrane; the specific gravity of the granules after coating the membrane is less than 1 g/cm 3, and the above-mentioned floating carrier, binder and membrane can be

digested and absorbed by ruminants;

The floating carrier is the fibre feed grass meal or a gluten-based feed;

The fibrous feed component grass meal is straw, alfalfa, oats and/or rice husks;

The gluten-like feed ingredient is wheat bran and/or oil bran;

The binding agent is stearic acid, modified starch, flour and/or guar gum:

The waterproof membrane is stearic acid;

The urea is expanded urea;

A urea complex of the bioregulated release type is described, which is produced by the following process: 1) Pelleting of a mixture of urea, fibrous feed, grass meal or

Gluten-based feed containing stearic acid; 2) heating stearic acid to a liquid state; 3) removing the granules from step 1) and coating them using a

Coating machine, wherein the membrane is stearic acid in the liquid state from step 2); coating three times; 4) cooling to obtain a bioregulated release urea complex.

The present invention has the following advantages: 1. Good rumen floatability: using stearic acid and urea or puffed urea mixed in a certain ratio to prepare a granule and a coating to obtain a urea complex with a density of less than 1 g/cm 3 so that it can float in the surface layer of rumen fluid; 2. Good safety: Due to the good floatability of this product, it floats in the upper layer of rumen fluid with fodder and other roughage in a mixed state.

At the same time, due to the special encapsulation process of this product, it is not released in the rumen for 16 hours, so that the urea is not actively released into the rumen fluid and does not enter the digestive process of the

lobe stomach, true stomach and small intestine, which in case of adequate

Feeding quantity does not lead to poisoning of the ruminants by the urea; 3. Good palatability: The use of membrane technology for effective

Encapsulation of urea reduces the ammonia taste caused by the decomposition of

Urea in saliva, effectively solving the problem of poor palatability of urea; 4. The absolute release of urea in the rumen and the release rate can be controlled: The total release of urea and the

Release rates are adjusted according to the rumination rate and deh}/>05382

ruminant volume, which promotes the efficiency of urea use; 5. Reducing the total feeding costs for ruminants and improving the

Breeding efficiency: By introducing this product, the total feeding amount of

Urea in ruminants can be increased significantly. Compared to conventional

Slow-release urea products can increase the feed quantity by 4-5 times. The use of urea non-protein nitrogen instead of soybean meal and other plant protein raw materials improves the efficiency of

Nitrogen utilization and on the other hand can greatly reduce feeding costs; 6. Reduce dependence on imported plant protein and improve national food security; 7. Process, the invention processing process is simple, easy to operate, easy to promote;

The present invention provides a bioregulated release urea complex comprising: urea, a floating carrier and a binder which are mixed and granulated and coated with a waterproof membrane; The specific

Weight of the granules after coating the membrane is less than 1 g/cm 3, and the floating carrier, binder and membrane can be digested and absorbed by ruminants; It is produced by the following process: 1) Mixing urea, fibrous feed, grass meal or gluten-based feed with stearic acid in a certain ratio to produce granules; 2) Heating the stearic acid to a liquid state; 3) Taking out the granules from step 1) and coating them using a

Encapsulation machine, wherein the membrane is the stearic acid in the liquid state from step 2); coating three times; 4) cooling to obtain a bioregulated urea complex.

The product of the present invention, which has a low density in relation to

Rumen fluid, floats completely with the roughage in the upper layer of the

Rumen fluid and cannot be released or only a small amount can be released for 16 hours, which

Use of urea in ruminants can be maximized.

Description of the attached drawings

Figure 1 Condition of the feed floating in the water with bioregulated release of the

urea complex;

Figure 2 Condition of the feed floating in the water and the urea complex placed on the floating meadow;

Figure 3 State of the urea complex after mixing with the feed.

Detailed description

Embodiment 1

A urea compound feed of the bioregulated release type, the material being selected to contain urea, maize, stearic acid, fibrous feed ingredients, grass meal (straw, alfalfa, oats, rice hulls, etc.) and gluten-based feed ingredients (wheat bran, oil bran, etc.);

The urea or expanded urea is mixed with stearic acid through a

feed pelleting process, which prepares it for swimming and facilitates its use on site;

The encapsulation membrane is stearic acid, which utilizes the hydrophobicity of stearic acid to ensure that the granulated urea is not damaged by water; LU505382

The said urea compound feed of the bioregulated release type has a specific gravity less than or equal to the specific gravity of the rumen fluid.

A process for producing a urea compound feed of the bioregulated type

Release, which includes: 1) Crushed urea and corn are mixed with a certain weight, puffed at a temperature of 100-120°C, cooled and processed into puffed urea; 2) Urea or puffed urea or fibrous feed, grass meal or gluten-based feed are mixed with stearic acid in a certain ratio to form a

granules, adjusting the density of the material so that the final product floats and facilitates production and use; 3) heating the stearic acid to 90-100°C, melting it into a liquid state and

Store for spraying; 4) Remove the granules from step 2) and coat with a

Encapsulation machine, the membrane being stearic acid in liquid state from step 3); three times coating to ensure the integrity and uniformity of the coating; 5) The coated product can be obtained after fully cooling in accordance with the quality standard of bioregulation type urea compound feed.

Embodiment 2

Fin urea compound feed of the bioregulated release type, which, based on the

Weight, 42% urea, 18% corn and 40% stearic acid contains:

Urea and maize crushed to a mesh size of 80 mesh or more; expanded urea produced by the following process: 1) Crushed urea and maize are mixed in a weight ratio of 7:3, at a

Temperature of 100-120°C puffed, cooled and crushed to 40 mesh.

A process for the production of a urea compound feed of the bioregulated type

Release, which includes: 1) Mixing 66% expanded urea and 34% stearic acid to produce

Pellets, cooling and processing: 2) Heating the stearic acid to 90 to 100°C and melting it into the liquid state; 3) The granulated material is after granulation and cooling with external

Spray coating technology coated, in accordance with the ratio of 90%

Granules and 10% stearic acid, and the coating is carried out in 3 times to ensure the

to ensure integrity and uniformity of the coating; (4) The well-coated product, after complete cooling, can be processed in accordance with the

Quality standard of bioregulation type urea compound feed can be maintained.

The state of the prepared feed in the water is floating, as shown in Figure 1; the nutritional indicators of this product are: crude protein content 120%, expanded starch 12.6% and fat 40%.

Embodiment 3

Fin urea compound feed of the bioregulated release type, which, based on the

weight, 45% urea and 55% stearic acid;

A process for producing a bioregulated urea compound feed, which comprises: 1) Urea granules and stearic acid granules in the ratio 50% urea + 50%

Mix stearic acid, granulate, cool and prepare for use; LUS05382 2) Heat the stearic acid to 90-100°C and melt it into the liquid state; 3) The granules after granulation and cooling are treated with external

Spray coating technology coated, in accordance with the ratio of 90% 5 granules and 10% stearic acid, in 3 times to ensure the integrity and uniformity of the coating; (4) The well-coated product, after complete cooling, can be in accordance with the

Quality standard of bioregulation type urea compound feed can be maintained.

The state of the prepared feed in the water is floating, as shown in picture 1; the nutritional indicators of this product are: crude protein content of 128% and 55% fat.

Embodiment 4

Experiment on the release rate of compound feed

I. Experiment on the degree of release in water

The feeds prepared in embodiments 2 and 3 were used as test samples (Nos. 1 and 2), and the commercially available slow-release protein feed

Release 1 (Control 1), the commercially available slow-release protein feed

Release 2 (Control 2) and the Chinese patent CN201910510344 X, “A type

Slow release protein feed” (Control 3), disclosed feeds were classified as

Controls used; Each sample was weighed 1.0 g, placed in an Erlenmeyer flask, added 100 ml of pure water (water pH 6.6), placed in a water bath shaker, the

Shaking parameters were set to 39°C, 100rpm, and samples were shaken in 0.5h

intervals (1h intervals after 3h), and 0.5 ml was aspirated with a pipette gun, and the solubility urea content of the solution was determined with the

spectrophotometer method; the overall results are presented in Table 1.

It can be seen from the table that the two protein feeds, Control 1 and Control 2, completely released urea into the water within 3 hours, and the feeds of the Control 3 group all released no more than 5 hours, and their slow release was relatively fast, and the concentration of urea at 4 hours was as follows, from large to small: Control 1>Control 2>Control 3>Sample 1=Sample 2; The concentrations in the

Embodiments 2 and 3 of the present invention as test samples

Feed (No. 1 and 2) were not released at all in less than 16 hours, and the

Encapsulation effect was better, which provided a guarantee for the realization of bioregulation.

IL. Test on the degree of release in the rumen fluid

The feeds prepared in embodiments 2 and 3 were used as test samples (Nos. 1 and 2), and the commercially available slow-release feed

Protein release 1 (Control 1), the commercially available slow release feed

Protein release 2 (Control 2) and the one described in Chinese patent CN201910510344.X, “A type

Slow protein release feeds” (Control 3) were used as controls; Each sample was weighed 1.0 g, placed in an Erlenmeyer flask, 100 ml of rumen fluid was added, placed in a water bath shaker,

Shaking parameters were set to 39°C and 100rpm, every 0.5 h (every 1 h after 3 h) a

Sample is taken and then 0.5 ml is sucked up with a pipette gun and the soluble

Urea content of the solution was determined by the spectrophotometer method; the overall results are presented in Table 2.

From the table, it can be seen that control 1 completely released urea into the rumen fluid within 3 hours, control 2 completely released urea into the rumen fluid within 2 hours, and all feeds in control 3 group were released only after 5 hours, with the slow release rate being relatively high and the urea concentration after 4 hours being as follows in descending order:

Control 1>Control 2>Control 3>Sample 1=Sample 2; The feeds (Nos. 1 and 2) prepared as experimental samples in embodiments 2 and 3 of the present invention were not released at all in less than 16 hours, and the encapsulation effect was better, which provided a guarantee for the realization of bioregulation.

Claims (8)

Claims LU505382 1. A bioregulated release type urea complex containing urea, a floating carrier and a binder as mixed granules coated with a waterproof and water-permeable membrane; after coating, the specific gravity of the film particles is less than 1 g/cm3, the floating carrier, binder and membrane can be digested and absorbed by ruminants. 2. A bioregulated release type urea complex according to claim 1, characterized in that the floating carrier is a fibrous feed, grass meal or gluten feed. 3. A bioregulated release type urea complex according to claim 2, characterized in that the fibrous feed is grass meal, straw, alfalfa, oats and/or rice husks. 4. A bioregulated release type urea complex according to claim 3, characterized in that the gluten-based feed is wheat bran and/or oil bran. 5. A bioregulated release type urea complex according to claim 4, characterized in that the binder is stearic acid, modified starch, flour and/or guar gum. 6. A bioregulated release type urea complex according to claim 5, characterized in that: the waterproof membrane is stearic acid. 7. A bioregulated release type urea complex according to claim 6, characterized in that: the urea is expanded urea. 8. A bioregulated release type urea complex according to claim 7, characterized in that the bioregulated urea complex is prepared by the following process: 1) pelletizing a mixture of urea, fibrous feed, grass meal or gluten-based feed with stearic acid; 2) heating stearic acid to a liquid state; 3) taking out the granules from step 1) and coating them by means of a coating machine, the membrane being stearic acid in the liquid state from step 2); coating three times; 4) cooling to obtain a bioregulated release urea complex.