Livestock and poultry excrement mainly includes pig, cow, sheep, horse and other livestock excrement, and chicken, duck and other poultry excrement. According to the characteristics of different excrement discharge mode, amount of excrement and nutrient content, different treatment methods were selected. Among them, poultry manure contains higher organic matter and nitrogen, phosphorus, potassium nutrients, and contains more calcium and other medium and trace elements. Poultry manure is easy to decompose and has higher decomposition temperature, which belongs to thermal fertilizer.
On the nutritional composition of livestock excrement
1. Pig manure has fine texture, contains more organic matter, nitrogen, phosphorus and potassium nutrients, and contains a lot of humus, which has a good effect on improving soil fertility.
2. Cattle manure belongs to cold fertilizer, in which the organic matter is difficult to decompose, the decomposition is slow and the fermentation temperature is low.
3. Sheep manure has fine texture, less water content and higher nitrogen and potassium contents in urine. Its nitrogen form is mainly urea nitrogen, which is easy to be decomposed and utilized.
4. Horse manure contains high organic matter and a large number of cellulose-decomposing bacteria. It can produce high temperature when composting and belongs to thermal fertilizer.
Farms produce a large amount of animal manure every day. If these wastes are not properly disposed of, they will cause huge pollution to the environment. After fermentation of these animal manure, organic fertilizer equipment is used for processing, materials are mixed with other ingredients, and processed by granulation, drying, cooling and other treatments of organic fertilizer production line, which can become high-quality commercial organic fertilizer.
Organic fertilizer made from livestock and poultry manure (especially livestock and poultry manure intensively treated in farms), straw, agricultural by-products and organic waste through microbial fermentation has the advantages of low investment, wide availability of raw materials, low cost and good ecological benefits. The nutritive value and economic value of agricultural products produced by organic fertilizers are high. At the same time, organic fertilizers produced by livestock and poultry manure can reduce environmental pollution caused by chemicals. Therefore, organic fertilizer equipment has broad prospects for the treatment of livestock manure.