Why do biological litter treatments using Bacillus subtilis strains effectively control gaseous ammonia inside layer houses?

Ammonia gas ($NH_3$) is a toxic byproduct of the anaerobic decomposition of uric acid in poultry manure, catalyzed by the microbial enzyme urease. High ammonia levels (above 20 ppm) paralyze the ciliated epithelium of the hen's respiratory tract, leading to Newcastle and E. coli infections. Biological litter treatments containing concentrated spores of Bacillus subtilis and Bacillus licheniformis are highly effective. When sprayed onto the litter or manure, these beneficial, aerobic bacteria multiply rapidly, outcompeting wild anaerobic bacteria for moisture and carbon. They secrete specialized enzymes that digest organic proteins, binding the free nitrogen into stable microbial proteins rather than letting it convert into volatile ammonia gas. This biological pathway reduces house ammonia levels by up to 80%, improves eggshell cleanliness, and reduces respiratory diseases. Farmers can read advanced bio-remediation protocols in the Poultry Encyclopedia, buy biological litter sprays on Poultry Plaza, monitor daily rates on Poultry Rates, and trade on Murghi Mandi.