Chicken manure dry matter contains 13-35% of crude protein, amino acid composition is also relatively complete, has a high nutritional value, suitable for recycled feed. In the past, when chicken manure was used as feed, the natural drying method was generally used. It was neither hygienic nor easy to lose nutrients. Some new processing methods have emerged. They are described as follows:
First, formaldehyde - sulfuric acid - urea treatment. Fresh chicken manure was dispersed and allowed to dry, and 0.5% formalin was added for 24 hours. Then add 0.1% sulfuric acid, stir well, and then stack for 24 hours. Finally, turn over, add 3-5% urea, stir and oxidize for 24 hours. After 24 hours of piling, the pilings are air-dried, processed and pulverized for use as feed. The chicken manure treated with this method is non-toxic, colorless, and odorless. Pigs are particularly fond of eating, and the optimum dietary supplement ratio is 10-15%.
Second, phosphate - propionic acid - acetic acid treatment. Add 0.25-0.5% of total chicken manure to chemical substances, including 1% of calcium phosphate or phosphoric acid, 80% of propionic acid, and 20% of acetic acid. Store for 5-14 days. Use after crushing. This method is convenient and practical, and there is no environmental pollution.
Third, thermal spray method. This approach is similar to "popcorn." The chicken manure was first dried to a moisture content of less than 30%, and injected into a heat sprayer for heat treatment. The thermal spraying chicken manure regenerative feed is rich in nutrients, the protein content is generally between 25-34%, the organic matter digestibility can reach 60-80%, has the advantages of disinfection, deodorization, bulkiness, odor, etc., and is an excellent protein feed .
Fourth, microbial fermentation method. This method uses Aspergillus oryzae and other strains and uses a solid raw material fermentation process to treat chicken manure. The chicken manure regenerated feeds produced by this method have special fragrance, rich nutrition, and easy to absorb. Crude protein reaches more than 29%, and essential amino acids increase more than 7 times, which greatly increases the biological value of chicken manure.
Fifth, mixed silage law. You can use cellar storage, bag storage and heap storage methods. The chicken manure was mixed well with the chopped green corn stalk. Chicken manure accounted for 30% and corn stover accounted for 70%. The method of operation is similar to that of ordinary silages, with side-filling and compaction to reduce residual air. After filling, it is sealed tightly. After 30 days, the pit roof is opened and a clear scent of wine is smelled, indicating that the silage is successful and can be accessed layer by layer. . Chicken manure fermented by silage has acidity, sweetness, aroma and wine taste, and has good palatability. Feeding livestock has fast daily gain, smooth fur, strong physique, strong resistance, and low incidence, and cattle and sheep love to eat.
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