Method for producing biological feed through straw fermentation

Abstract

The invention discloses a method for producing a biological feed through straw fermentation. The method comprises the following specific steps of (1) pretreating raw materials namely performing steam-exploded pretreatment, performing alkalization treatment, performing washing with water, performing air-drying, performing crushing, performing screening with a 20-mesh sieve, and enabling treated materials to be standby application at 4 DEG C, wherein the steam-exploded pretreatment condition includes that straw is 2-3cm, the addition quantity each time is 200g, the temperature is maintained to be 220 DEG C, the pressure is 2.2MPa, the time is maintained for 5min, and instantaneous pressure relief is performed, so that materials are exploded, performing alkali treatment: after steam-exploding, mixing the straw with a 2% NaOH solution in the ratio of the straw to the 2% NaOH solution being 1 to 20, performing high-pressure steam sterilization at 121 DEG C, and performing treatment for an hour; (2) performing pre-enzymolysis experiment: after pretreatment, adding a small quantity of enzymes to the pretreated wheat straw, and performing pre-enzymolysis, wherein 200ml of an enzymolysis system is adopted, the addition amount of glucan is 10%(w / v), and materials are supplemented in batches; and (3) performing synchronous diastatic fermentation experiment: mixing strains, adding the mixed strains to enzymatic hydrolysate, performing anaerobic fermentation, wherein the reaction temperature is 30-32 DEG C, the fermentation time is 3-5 days, the rotational speed is 170-220r / min, and thepH is 5-7. The feed produced by the method is high in content of organic compounds and high in nutrient value and has the effect of promoting the growth of livestock.

Description

technical field [0001] This experiment belongs to the field of biological feed, and involves a method for efficient production of biological straw feed, especially the production of new microbial roughage with cheap raw materials such as wheat straw. Background technique [0002] In the environment where grazing is prohibited on grasslands and house feeding is advocated, biological feed is an essential raw material for ruminants such as cattle and sheep. There are many straws in the south and more straws in the north, but the texture of rice straw is rough, the content of protein is low, and the content of lignin is high. At present, most rice straws are not processed and directly fed to ruminants such as dairy cows, but direct feeding has poor palatability and low feed intake. , low digestibility, extremely low nutritional value and other shortcomings, and can only be used for ruminants, so the utilization rate is extremely low. [0003] Traditional microbial feed is mainl...

AI Technical Summary

Problems solved by technology

Patent Publication No. CN 105010728A discloses a method of directly using straw to ferment through mixed strains. This invention can effectively reduce production costs and produce rich products. However, the growth of initial flora is affected by the content of monosaccharides in straw, so it is difficult to quickly growth, so the fermentation cycle is long, which increases the cost

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