S. Muhonen, V. Julliand, J. E. Lindberg, J. Bertilsson and A. Jansson change from hay Effects on the equine colon ecosystem of grass silage and haylage diets after an abrupt doi: 10.2527/jas.2008-1461 originally published online March 27, 2009 2009, 87:2291-2298. J ANIM SCI http://www.journalofanimalscience.org/content/87/7/2291 the World Wide Web at: The online version of this article, along with updated information and services, is located on www.asas.org by guest on June 24, 2013 www.journalofanimalscience.org Downloaded from