Long-acting slow-release coated urea special for lactating dairy cows, and preparation method and application thereof

A technology for slow-release bags and dairy cows, which is applied in the fields of application, animal feed, molding or processing of animal feed, etc. It can solve problems such as ammonia poisoning of ruminants, reduce the utilization efficiency of ruminants, and environmental pollution, so as to promote growth and increase protein. Utilization rate, the effect of saving protein source

Pending Publication Date: 2020-08-11
JILIN ACAD OF AGRI SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the rapid hydrolysis of urea to NH by microbial enzymes in the rumen 3 , too much ammonia is excreted through the body's metabolism, which greatly reduces its utilization efficiency in ruminants and causes environmental pollution; and excessive ammonia concentration in the rumen will cause ammonia poisoning in ruminants

Method used

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  • Long-acting slow-release coated urea special for lactating dairy cows, and preparation method and application thereof
  • Long-acting slow-release coated urea special for lactating dairy cows, and preparation method and application thereof
  • Long-acting slow-release coated urea special for lactating dairy cows, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A special long-acting slow-release coated urea for lactating dairy cows, which consists of a core material and a wall material, including 90% of the core material and 10% of the wall material by mass fraction. The core material is feed urea granules, with a total nitrogen content of 46%; the wall material is a layer, composed of ethyl cellulose and polyacrylic acid resin IV, including 65% ethyl cellulose by mass fraction , Polyacrylic resin No. IV 35%.

[0021] Specifically, the preparation method of long-acting slow-release coated urea dedicated for lactating dairy cows comprises the following steps:

[0022] The urea granule for feeding is used as the core material, and it is coated by a DPL-II multifunctional granulating and coating machine. Put the core material into the bottom-sprayed moving bed, raise the moving bed, mix the wall material with plasticizer and anti-sticking agent according to a certain proportion, and then dissolve it in 95% ethanol solution to ma...

Embodiment 2

[0024] A special long-acting slow-release coated urea for lactating milk cows, which consists of a core material and a wall material, including 90% of the core material and 10% of the wall material by mass fraction. The core material is feed urea granules, with a total nitrogen content of 46%; the wall material is a layer, composed of ethyl cellulose and polyacrylic acid resin IV, including 65% ethyl cellulose by mass fraction , Polyacrylic resin No. IV 35%.

[0025] Specifically, the preparation method of long-acting slow-release coated urea dedicated for lactating dairy cows comprises the following steps:

[0026] The urea granule for feeding is used as the core material, and it is coated by a DPL-II multifunctional granulating and coating machine. Put the core material into the bottom-sprayed moving bed, raise the moving bed, mix the wall material with plasticizer and anti-sticking agent according to a certain proportion, and then dissolve it in 95% ethanol solution to mak...

Embodiment 3

[0028] A special long-acting slow-release coated urea for lactating dairy cows, which consists of a core material and a wall material, including 90% of the core material and 10% of the wall material by mass fraction. The core material is feed urea granules with a total nitrogen content of 46%; the wall material is one layer and is composed of ethyl cellulose.

[0029] Specifically, the preparation method of long-acting slow-release coated urea dedicated for lactating dairy cows comprises the following steps:

[0030] The urea granule for feeding is used as the core material, and it is coated by a DPL-II multifunctional granulating and coating machine. Put the core material into the bottom-sprayed moving bed, raise the moving bed, mix the wall material with plasticizer and anti-adhesive agent in a certain proportion, and then dissolve it in 95% ethanol solution, and prepare the wall material with a content of 5% coating solution. Set the fan frequency to 30Hz, the air inlet t...

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Abstract

The invention belongs to the technical field of ruminant feed, and specifically relates to long-acting slow-release coated urea special for lactating dairy cows, and a preparation method and application thereof. The long-acting slow-release coated urea comprises a core material and a wall material, wherein the core material is a urea particle, the wall material is any one or a combination of two of ethyl cellulose, polyacrylic resin IV, chitosan or hydrogenated palm oil, the long-acting slow-release coated urea comprises 70%-90% of the core material, and 10%-30% of the wall material, and the wall material also comprises an emulsifier, a plasticizer, and an anti-sticking agent. The long-acting slow-release coated urea can effectively replace part of protein feed, saves protein sources, reduces feed cost, and especially improves a protein utilization rate of lactating dairy cows in the feeding environment where protein is scarce in winter and spring. In addition, the long-acting slow-release coated urea can improve the palatability of urea, avoids rumen ammonia poisoning, and effectively slows down a release rate of urea in the rumen of ruminant. Compared with commercially availableproducts, a product prepared by adopting a coating process of the invention has a more uniform coating film and better coating effects.

Description

technical field [0001] The invention belongs to the technical field of ruminant feed, and in particular relates to a long-acting slow-release coated urea for lactating dairy cows and a preparation method and application thereof. Background technique [0002] Diets provide energy and essential nutrients in the form of protein, vitamins and minerals for animal growth, reproduction and lactation. Energy and protein are usually the most limiting factors for ruminants. In ruminant diet formulation, in order to achieve balanced rumen fermentation, obtain maximum feed intake and feed utilization, optimize the relationship between energy and protein content in the feed The balance is very important. However, my country's protein feed resources are scarce, and most of them rely on imports, which seriously restricts the development of animal husbandry; therefore, seeking new protein feed resources is the primary problem that needs to be solved urgently. [0003] Ruminants have the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K50/15A23K50/10A23K40/35
CPCA23K50/15A23K50/10A23K40/35
Inventor 魏炳栋郑琳于维陈龙陈群邱玉朗李林闫晓刚班志彬李立佳祁宏伟
Owner JILIN ACAD OF AGRI SCI
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