Feed fermentation method with modified attapulgite clay as nitrogen fixing agent

Abstract

The invention discloses a feed fermentation method with modified attapulgite clay as a nitrogen fixing agent. High-temperature ammoniation straws used as feed fermentation substrates are fermented at high temperature with the modified attapulgite clay as the nitrogen fixing agent by adopting a mixed fermentation bacterium, wherein the mixed fermentation bacterium comprises the mixed fermentation bacterium I and the mixed fermentation bacterium II. The fermentation steps are as follows: the modified attapulgite clay is prepared; the nitrogen fixing agent is added in the straws for high-temperature ammoniation to obtain the fermentation substrates; the modified attapulgite clay is added in the fermentation substrates; the mixed fermentation bacteria I and II are added in the fermentation substrates in batches for fermentation; finally, the fermentation materials are dried or pelletized to obtain straw fermented feed. The method has the following advantages: the modified attapulgite clay is adopted as the nitrogen fixing agent to be applied to the feed fermentation process, so that a better nitrogen preservation effect can be achieved, the optimal effect of fermenting the high-temperature ammoniation straws is obtained, and the nitrogen content of the ammoniation straw fermentation feed can be effectively improved.

Description

technical field [0001] The invention relates to a method for improving the nutritional value of straw, in particular to a feed fermentation method using modified attapulgite clay as a nitrogen fixing agent. Background technique [0002] The nutritional value of straw directly used as feed is low, the digestibility is only 25-40%, and its palatability is poor, the feed intake is low, only 50-60% of high-quality forage, it is difficult to meet the maintenance needs of animals. However, straw is still a feed resource with great potential. Once its nutritional value is improved after chemical or biological treatment, it can be used as the main roughage for ruminants. For a long time, nutritionists have been working on how to improve the quality of low-quality roughage, looking for treatment methods that can improve straw digestibility and nutritional value, and have made great efforts for this. [0003] Ammonification of straw is a more successful method to improve the nutriti...

AI Technical Summary

Problems solved by technology

Some past studies have shown that attapulgite clay has a certain adsorption effect on ammonia nitrogen under suitable conditions, so it is also widely used in the food industry, construction industry or water purification, but has not yet been used in the field of microbial fermentation.