自20世纪50年代起,发达国家开始进行大规模地集约化养殖,在城镇郊区建立集约化畜禽养殖场。由于每天有大量粪便及污水产生,难以处理利用,造成了严重的环境污染。60年代,日本用“畜产公害”概念高度概括这一问题的严重性。与此同时,许多发达国家迅速采取措施加以干预和限制,并通 Since the 1950s, developed countries started large-scale intensive farming and established intensive livestock and poultry farms in the suburbs of cities and towns. Due to the large amount of excrement and sewage produced each day, it is difficult to deal with and cause serious environmental pollution. In the 1960s, Japan used the concept of “livestock nuisance” to highly summarize the seriousness of the problem. In the meantime, many developed countries have taken swift steps to intervene and limit them and have passed