Enzyme and bacterium complexing agent for degrading crop straws

Abstract

The invention relates to an enzyme and bacterium complexing agent for degrading crop straws. The enzyme and bacterium complexing agent comprises the active components including a microorganism complexing agent and compound enzyme. An experiment result shows that xylogen, neutral detergent fibers, acid detergent fibers, acid detergent xylogen, cellulose, crude protein and the like of the straws treated by the enzyme and bacterium complexing agent are well degraded; the degrading rate of rumens of ruminants to the xylogen of the straws is increased, and the surrounding of the xylogen around other nutritional components is broken through, so that the availability of the straws is improved. The enzyme and bacterium complexing agent disclosed by the invention is convenient to use; the straws are not required to be subjected to physical pretreatment; the fermentation time of the straws is short; an effect of the complexing agent is better than that in the prior art.

Description

Technical field [0001] The invention relates to the field of processing and utilization of ruminant coarse feed in the feed industry, in particular to an enzyme-bacteria composite agent for degrading crop straw. Background technique [0002] my country is a large agricultural country with extremely rich crop straw resources. The annual output of straw in the world is as much as 3 billion tons. In 2009, the remaining straw output after the crops were harvested in my country was as high as 740 million tons, ranking among the top in the world. However, due to the special physical and chemical properties of crop straw, its use as feed has many limitations. The straw has a rough texture, poor palatability, poor nutritional value, high lignin and cellulose content, and low digestibility and utilization rate. Only a small part of it can be used to feed ruminants. Monogastric animals generally cannot use straw, and the digestibility of straw by ruminants is only 20%-30%. How to improv...

AI Technical Summary

Problems solved by technology

Fungi have a good decomposing effect on cellulose and lignin, and although bacteria also have the corresponding ability to produce cellulase, the degradation effect is not as good as that of fungi, especially in straw fermentation, when straw lignin has not been degraded, bacteria The amount of carbon and nitrogen required for growth and expansion is insufficient to maintain the activity of bacteria

At the same time, too many strains are used, which not only increases the cost, but also does not guarantee a high fiber degradation effect

[0017] Existing straw-decomposing bacteria have the problem of long fermentation period, such as CN200710061529.4 needs to be fermented for 15 days, CN201210178963.1 needs to be fermented for 4-25 days; although the fermentation time is shortened, some straws need to be physically pretreated, which increases the cost. For relatively cheap straw, the gain outweighs the gain. For example, although the fermentation time of CN201110441198.3 is 2 days, the straw needs to be soaked in ammonia water for 24-48 hours in advance; 3058337-0019-0003 data adopts steam explosion treatment

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