During poultry breeding, many factors such as the accumulation of chicken manure, untimely cleaning, shacks, and high-temperature and high-humidity environment can easily produce a large amount of ammonia gas, which has high water solubility (1L water at 0 ℃) Soluble 907g) is often adsorbed on the chicken's skin, mucous membranes and ocular conjunctiva, thereby irritating it and causing various inflammations.

In order to avoid contamination by external bacteria during chicken breeding, the waterline of the chicken house is completely closed. Many chicken farms only supply water according to time and neglect disinfection.