New Methods for Using Chicken Manure as Feed, with a Detailed Explanation of Processing Techniques

In the past, processing chicken manure into feed generally relied on natural drying methods, which were neither hygienic nor effective at preserving nutrients. Some new processing methods have now emerged:

Formaldehyde—sulfuric acid—urea treatment method. Spread fresh chicken manure out to air, add 0.5% formalin, and pile it for 24 hours; then add 0.1% sulfuric acid, stir evenly, and pile it for another 24 hours; finally turn the pile, add 3%-5% urea, stir evenly, oxidize for 24 hours, pile for 24 hours, then spread the pile out to dry, and process and grind it for use as feed. Chicken manure treated by this method is non-toxic, colorless, and odorless, and pigs particularly love it; the optimal inclusion rate in the daily ration is 10%-15%.

Phosphoric acid—propionic acid—acetic acid treatment method. Add chemical substances at 0.25%-0.5% of the total amount of chicken manure, including 1% calcium phosphate or phosphoric acid, 80% propionic acid, and 20% acetic acid, pile for 5-14 days, then process and grind before use. This method is convenient and practical, with no environmental pollution.

Microbial fermentation method. This method uses strains such as Aspergillus oryzae and adopts a solid-state raw material fermentation process to treat chicken manure. The recycled chicken manure feed produced by this method has a special fragrance, is rich in nutrients, and is easy to absorb; crude protein reaches more than 29%, essential amino acids increase by more than 7 times, greatly improving the biological value of chicken manure.

Mixed silage method. Methods such as pit silage, bag silage, and pile silage can be used. Mix chicken manure evenly with chopped green corn stalks; chicken manure can account for 30%, and corn stalks 70%. The operating method is similar to ordinary silage: fill while compacting to reduce residual air, seal tightly after filling, and after 30 days, open the top of the pit. If a distinct alcoholic aroma is smelled, it indicates that the silage was successful, and it can be taken layer by layer for use. Chicken manure treated by silage fermentation has a sour, sweet, fragrant, and alcoholic taste, has good palatability, and when used to feed livestock, the animals gain weight quickly, their coats are glossy, their constitution is robust, their resistance is strong, and the incidence of disease is reduced.