Also- if you can get your hands on really good quality straw- goats will eat that too, and it is not bad for them. No, its not got the same protein content as hay, but it has great fibre content, and you can always replace the protein with something else- a little bit of soya bean meal for example.
Our local farmer where we get hay and straw from, has one field where the grass grows through the crop- so we always get the straw from that field, as it has the dried grass through it. The goats love to eat it, and if the weather is particularly bad and the goatlings eat all their other hay, I will throw some of the straw in the hayrack to give them something to chew at. At only £12 for a big bale, that is very economical for them. I wouldn't like to solely feed straw, but as an addition it can be fine.
Beth