Method for preparing protein feed from straw and inedible vegetables through mixed bacteria aerobic fermentation

Abstract

The invention mainly relates to a method for preparing protein feed from straw and inedible vegetables through mixed bacteria aerobic fermentation. The method is mainly characterized by comprising the following steps: uniformly stirring straw, inedible vegetables, rapeseed meal and bran till the moisture content reaches 50-60 percent; adding ammonium sulfate the mass of which accounts for 2-6 percent of the total mass of the dry materials, and urea the mass of which accounts for 1-4 percent of the total mass of the dry materials; regulating the pH value to be 5.5-6.5 by using 1 percent of whitewash; inoculating bacteria liquor which is formed by mixing Geotrichum candidum Link, lactic acid bacteria and aspergillus niger and the mass of which accounts for 8-12 percent of the total mass of the dry materials, wherein the mixed bacteria liquor comprises the following components in percentage by weight: 50-70 percent of Geotrichum candidum Link, 20-25 percent of lactic acid bacteria and 5-10 percent of aspergillus niger; fermenting at the temperature of 28-32 DEG C under ventilation conditions for 24-36 hours, thereby preparing the fermented protein feed. According to the method, by utilizing the modern biotechnology, optimal combined bacteria are optimized, the production process is simple and convenient, equipment and energy are saved, and the needed investment is low.

Description

Technical field: [0001] The invention mainly relates to a method for preparing protein feed by aerobically fermenting straw tail vegetables with mixed bacteria. Background technique: [0002] Our country has a large population, but there is a serious shortage of protein, and there are certain difficulties in increasing production or importing fish meal, which seriously affects the rapid development of my country's animal husbandry. It is the development trend of feed industry to vigorously develop protein feed with high nutritional value and low production cost. my country's agricultural product waste such as straw, tail vegetables and other raw material resources are quite rich, and the use of these raw materials to produce livestock and poultry feed has been a concern of scientific and technological workers in recent years. But what is reported at present is not perfect enough, it is difficult to form industrialized production, and the main problems are: [0003] The tra...

AI Technical Summary

Problems solved by technology

But what is reported at present is not perfect enough, it is difficult to form industrialized production, and the main problems are:

The disadvantages of this technology are: (1). When preparing anaerobic microbial fermentation agent, there are many kinds of strains required, and many auxiliary materials are added, especially expensive multiple enzyme preparations are added, which is complicated to operate and energy-consuming and investment are relatively large

(2). The production cycle of anaerobic fermentation feed is long, generally takes 7-30 days, the growth and reproduction of bacterial cells is slow, the number of cells in the product is small, and the protein content is low

(3). The plant area occupied by feed production is large, the production cycle is long, the energy consumption is large, and it is difficult to realize industrial production

The current method of processing the tail vegetables is to send the tail vegetables to the expensive vegetable cake making machine, wash and smash the filter press process, and then dry the filter residue to make vegetable cakes or feed. This processing method not only wastes water resources, but also Nutrients lost in vegetables

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