许多自然、人为和意外事件（即电力中断、设备故障、极端天气条件、风暴和自然灾害）都需要临时紧急通风和畜禽护理。这些事件可能需要短期（即几分钟到几天）或长期（即几周到几个月）临时紧急通风。本工程实践旨在提供数据和指南，以帮助设计牲畜和家禽的紧急通风、喂食、浇水和照明系统。

Many natural, man-made, and unexpected events (i.e., power interruptions, equipment failures, extreme weather conditions, storms, and natural disasters) occur requiring temporary emergency ventilation and care of livestock and poultry. These events may require either short term (i.e., minutes to days) or long term (i.e., weeks to months) temporary emergency ventilation. The purpose of this Engineering Practice is to provide data and guidelines to assist designing emergency ventilation, feeding, watering, and lighting systems for livestock and poultry.