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Method for preparing high-protein sacchariferous feed by straws

A high protein and feed technology, applied in animal feed, animal feed, application, etc., can solve the problems of low fat and sugar content, serious acid and alkali corrosion, unfavorable microbial growth and utilization, etc., to increase protein content and improve digestion and absorption rate , beneficial to digestion and absorption

Inactive Publication Date: 2011-09-14
ENZYME ENG INST SHAANXI PROVINCE ACAD OF SCI
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  • Application Information

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Problems solved by technology

At the same time, the nutritional content of straw feed is relatively low, which is characterized by low crude protein, fat and sugar content, low energy value, and high fiber content. The crude fiber is as high as 30% to 45%, and the degree of lignification is relatively high. , hard and rough texture, poor palatability, and indigestibility, which lead to the problem of low utilization rate of straw
[0003] After searching, the relevant patents in this field are: 1. Chinese patent application (95118343) discloses a high-protein saccharified feed and its preparation method. The invention uses strong acid and strong alkali for degradation, and uses active yeast fermentation to increase the protein content; The acid and alkali corrosion of this method is serious, and the nutrients of the straw cannot be fully degraded, and the protein content is not much improved.
2. Chinese patent application (98118918) discloses a production method of high-protein saccharification biological feed of crop stalks. This invention also uses strong acid and strong alkali to degrade, and then uses Trichoderma, Aspergillus and yeast mixed fermentation to increase protein content; the method Also, the acid-base corrosion is serious, the nutrients of the straw cannot be fully degraded, and the protein content does not increase much.
3. Chinese patent application (99111172) is a biological feed production agent and its use method, which uses chemical additives such as glucoamylase, softener, and strong alkali to soften the straw, and then uses microorganisms to improve the nutritional value of the straw; this method also exists Acid-base corrosion is serious, and straw nutrients cannot be fully degraded. At the same time, alkaline conditions are not conducive to the growth and utilization of microorganisms.
[0004] At present, the processing methods such as silage, micro-storage, yellow storage, acid storage, ammoniation, and alkalization of corn stalks are studied, all of which use microbial fermentation to produce enzymes to fully degrade cellulose, hemicellulose, lignin, etc. in corn stalks into However, the above methods have the problems of long fermentation period, easy to rot, difficult to store, and pollute the environment in the production process, which affects the effective utilization of straw

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1, the dried corn stalks are pulverized, sieved with 20 meshes, and 100 kg of raw material straw powder is put on the pot and steamed for 80 minutes to obtain clinker; the clinker and compound enzyme are mixed evenly, and the composition and dosage of the compound enzyme is lignin Enzyme 300g, cellulase 100g, pectinase 400g, glucoamylase 800g; then spray 100kg of water with pH4.5 and mix well, then degrade at 42±2℃ for 6 hours to obtain a hydrolysis mixture; add 5kg of Bran, 2kg of urea, 3kg of corn flour, then add 4kg of Saccharomyces cerevisiae and 5kg of Lactobacillus plantarum, mix well, accumulate and ferment, and ferment at 29±1°C for 29 hours to obtain aqueous feed; after drying That is, a high-protein saccharified feed is obtained.

[0017] The crude fiber content in the obtained feed is reduced from 32% to 16%, and the crude protein content is increased from 4% to 17%.

Embodiment 2

[0018] Embodiment 2, pulverize the dried rice straw, sieve through 20 meshes, take 100kg of raw meal straw powder and steam it in a pot for 40 minutes to obtain clinker; mix the clinker and compound enzyme evenly, wherein the composition and dosage of compound enzyme is lignin Enzyme 100g, cellulase 300g, pectinase 500g, glucoamylase 100g; spray 150kg of water with pH 5.5 and mix well, degrade at 52±2°C for 4 hours to obtain a hydrolysis mixture; add 5kg of bran Husk, 2kg of urea, 3kg of corn flour, then add 5kg of Saccharomyces cerevisiae and 4kg of Lactobacillus plantarum, mix well, accumulate and ferment, and ferment at 30±1°C for 27 hours to obtain aqueous feed; obtained by granulation High protein saccharified feed pellets.

[0019] The crude fiber content in the obtained feed is reduced from 30% to 14%, and the crude protein content is increased from 5% to 19%.

Embodiment 3

[0020] Embodiment 3, pulverize dry corn stalks and rice stalks, sieve through 20 meshes, get 100kg of raw material straw powder and steam in a pot for 60 minutes to obtain clinker; mix the clinker and compound enzyme evenly, wherein the composition dosage of the compound enzyme is , ligninase 200g, cellulase 250g, pectinase 300g, glucoamylase 600g; spray 150kg of water with pH 5.0 and mix well, degrade at 50±2°C for 5 hours to obtain a hydrolysis mixture; add 5kg of bran, 2kg of urea, and 3kg of corn flour were added to 5kg of Saccharomyces cerevisiae and 5kg of Lactobacillus plantarum, mixed well, piled up and fermented, and fermented at 31±1°C for 25 hours to obtain a water-containing feed; After drying at 50°C, high-protein saccharified feed can be obtained.

[0021] The crude fiber content in the obtained feed is reduced from 32% to 14%, and the crude protein content is increased from 4% to 20%.

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Abstract

The invention relates to a method for preparing high-protein sacchariferous feed by straws, which is characterized in that a straw powder raw evaporating material is mixed with complex enzyme; after carrying out saccharification hydrolysis, the product is accumulated and fermented by saccharomyces cerevisiae and lactobacillus planetarium; after the product is dried or granulated, the high-proteinsacchariferous feed is obtained. Compared with the prior art, the invention fully utilizes nutrient in the straws, improves a nutrient component of the feed, and is beneficial to the digestive absorption of livestock, wherein the crude protein content is improved to more than 21 percent, and the crude fiber content is lower than 14 percent; the dosage proportion of the straw feed in mixed feed and special feed can be improved, the dosages of concentrated feed and grain are saved; an experiment indicates that by adding 5 percent of sacchariferous feed into pig feed, the weight can be increasedby 6 percent, the economic benefits are improved by 12 percent, and the grain is saved by more than 65 percent; meanwhile, inherent resources of the straw are fully utilized, and the utilization ratio of the resources is improved; by reasonably utilizing the straws, the problem of environmental pollution caused by discarding and burning the straws is effectively solved; and the invention has the characteristics of simple and convenient operation, high degradation utilization ratio of the straws, high protein saccharide content, low cost and no environmental pollution.

Description

technical field [0001] The invention belongs to the technical field of straw feed processing, and in particular relates to the improvement of a method for preparing straw feed using enzyme technology. Background technique [0002] The sown area of ​​crops in my country ranks first in the world. In 2008, the output of various crop stalks was about 720 million tons, of which 182 million tons were corn stalks. In traditional agriculture, corn stalks are mainly used as fuel in rural areas. In recent years, some straws have been returned to the field for utilization, but the total amount is not large. A large amount of corn stalks has been discarded in the field or burned, resulting in waste of resources and serious environmental pollution. Straw is an important source of roughage for herbivorous livestock. Improving the nutritional value and feed utilization rate of straw can solve the problem of straw utilization and reduce environmental pollution. It is an effective way to sol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23K1/12A23K10/32
CPCY02P60/87
Inventor 徐升运马齐赵文娟张强陈卫锋任平
Owner ENZYME ENG INST SHAANXI PROVINCE ACAD OF SCI
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