%0 Conference Proceedings %T Effect of various semi-arid medicinal plant essential oils on in vitro ruminal methane emission and feed fermentation efficiency. %A Danesh Mesgaran, Mohsen %A Jahani Azizabadi, Hossein %A Vakili, Seyed Alireza %A K. Rezayazdi %J ADSA-ASAS 2011 Joint Annual Meeting %D 2011