近期,美国加利福尼亚州通过了全美最为严厉的限制畜禽中抗生素使用的法案,法案禁止常规性地使用抗生素来防病或者促进动物生长。加利福尼亚州的法案允许在执业兽医认定有必要使用抗菌药物治疗疾病、感染的时候或者手术及医疗程序中进行豁免使用。 Recently, the United States of California passed the most stringent bill that limits the use of antibiotics in livestock and poultry in the United States. The bill prohibits the routine use of antibiotics to prevent diseases or promote animal growth. The California act allows exemptions from being used by licensed veterinarians when it is deemed necessary to use antimicrobials to treat disease, infection or surgery and medical procedures.