This blogsite is a good source of information but I don't think much of it is in english but the pictures could give you some general idea unless you could speak bahasa. Here we use either silaj(brewed/pickled grass) or similar method like laurie did only using pea or wheatgrass. There's also usefull grass like elephant grass which is popular source of nutrition for cattle (just like it's name, wild elephant likes them a lot). And included are info of using urea-mollas block as cattle feed done by people in africa.