construction and operation of a ventilated hood system for measuring greenhouse gas and volatile organic compound emissions from cattle建设和运营通风罩系统的测量温室气体和挥发性有机化合物排放的牛.pdf

Animals 2011, 1, 433-446; doi:10.3390/ani1040433 OPEN ACCESS animals ISSN 2076-2615 /journal/animals Article Construction and Operation of a Ventilated Hood System for Measuring Greenhouse Gas and Volatile Organic Compound Emissions from Cattle Sara E. Place, Yuee Pan, Yongjing Zhao and Frank M. Mitloehner * Department of Animal Science, University of California, Davis, One Shields Ave., Davis, CA 95616, USA; E-Mails: seplace@ (S.E.P.); yepan@ (Y.P.); yjzhao@ (Y.Z.) * Author to whom correspondence should be addressed; E-Mail: fmmitloehner@; Tel.: +1-530-752-3936; Fax: +1-530-752-0175. Received: 28 October 2011; in revised form: 1 December 2011 / Accepted: 1 December 2011 / Published: 8 December 2011 Simple Summary: We describe the construction and operation of a unique system for measuring gaseous emissions that arise from the rumen and metabolism of cattle. This system allows for the collection of high quality data that can be used to improve emission inventories at the regional and national level. Additionally, the system can be used to test various emission mitigation techniques. Abstract: Recent interest in greenhouse gas emissions from ruminants, such as cattle, has spawned a need for affordable, precise, and accurate methods for the measurement of gaseous emissions arising from enteric fermentation. A new head hood system for cattle designed to capture and quantify emissions was recently developed at the University