In addition, it has contributed to social welfare by systematically managing livestock waste that would otherwise produce odour and water pollution. Complaints about livestock odour increased by 52.3% from 2,838 cases in 2014 to 4,323 cases in 2015. With a growing interest in animal welfare and sanitation, there is a demand for more rigorous sanitary management of livestock facilities and a change in livestock-raising practices and facilities management (e.g. hygienic status of cattle sheds).