Here's a video on Forage, the first part is about the science of when to cut forage and how it affects Ruminant animals. Ten there's a good section on storage and use.
http://www.24-7agtv.com/Joomla/index.php?option=com_seyret&task=videodirectlink&Itemid=1&id=67
http://www.24-7agtv.com/Joomla/index.php?option=com_seyret&task=videodirectlink&Itemid=1&id=67