Whether or not chicken manure is disposed of is related to environmental safety, while the method of disposal is related to economic benefits. "No treatment" is a "concept" problem, "whether it is handled properly" is an "economic" problem, and a good treatment saves money and effort , Handling improper labor and money!
Chicken manure has the highest nutritional value among conventional livestock and poultry manure, because chicken intestines are too short compared to cattle, sheep, goose and pigs, and the food does not stay in the intestines for a long time, so the nutrients of chicken feed can generally only absorb three of them. About one-half of it, most of it is excreted from the rectum, and eventually the chicken "pulled out" is the "treasure". Chicken manure contains about 28% crude protein, 13% pure protein, 8% total amino acids, and various amino acids are relatively balanced. In addition, it is also rich in B vitamins and various trace elements. Therefore, chicken manure is a cheap low-energy protein feed. Using chicken manure to replace part of the protein feed and supplementing some energy feed can greatly improve the economic benefits of animal husbandry, reduce pollution, purify the environment, and form an ecological industry chain. Similarly, chicken manure can also be fermented into high-grade high-quality organic fertilizer or further made into organic and inorganic biological fertilizer (referred to as biological fertilizer), which brings good economic, ecological and social benefits. For example, assuming that the annual output of fresh manure per chicken is 41.4 kg, and the annual output of fresh manure of 10,000 chicken farms is 414 tons, the fermentable feed can reach 200 tons. Generate an economic income of 240,000 yuan. However, if the fresh manure is directly sold without fermentation, only about 60,000 yuan can be obtained. Comparing the two, the economic return of fermentation is obvious. According to incomplete statistics, my country's annual output of fresh chicken manure is about 60 million tons (excluding chicken manure from free-range farmers), which is equivalent to more than 18 million tons of dry chicken manure. If it is all used as feed, it can save more than 3 million tons of wheat flour and other concentrates. , equivalent to about RMB 3 billion.
There are various processing methods for chicken manure, including physical methods, chemical methods, microbial fermentation methods, and comprehensive methods of various methods. The traditional old method of fermenting chicken manure as fertilizer is to let it naturally accumulate and ferment for 5-6 months, and it takes about 20 days or a month to be used as feed, so that the smell is emitted, which not only pollutes the environment but also causes a large amount of nutrient loss. The use of microbial fermentation to treat chicken manure can not only improve the nutritional value of chicken manure, but also has low cost, simple operation and easy promotion, so it is welcomed by users. Treatment with fermentation aids can greatly speed up the fermentation process, which is especially convenient for the large-scale treatment of chicken manure in factories. However, the performance of starters with different properties is quite different, which is reflected in the different lengths of fermentation time, the amount of fermentation aids and thus the economic cost, the complexity of the fermentation operation and thus the labor intensity, the odor, color and appearance of the fermented products, as well as the transformation of bacterial protein and nutrients. Preservation versus improvement, i.e. different quality of the finished product, etc. This article briefly introduces several fermentation methods for the reference of those who are interested.
