feed preservation是什么意思

用法例句

This paper analyzed the current situation and source of pollutants such as faeces and odour,nitrogen,phosphorous,arsenic,copper and zinc in modernized animal husbandry and feed industry,and suggested comprehensive measures for environment friendly feed processing and diminishing of wastes from livestock farming.

在此基础上提出了生产环保饲料和减少养殖业排泄物的综合措施。