We use shredded fibres? It is very nice stuff ... the most important it takes a lot of moisture, the soil has an insulating effect and is almost dust free. All this is also very important for horses, but the difference here is I use Hempbed with Eucalyptus (smells good) and with the chickens the...
In the Netherlands we had about 1,500 Ha fiber hemp last year ... maybe an interesting movie
We get our hemp bedding from http://www.stoeterijwelfare.com/?page_id=954
About my experience I tell later more ... about 5 years experience, what do you want to know