likeke loxley, who's serving a sentence for theft.en here for six months. >> my favourite part, as you see, is putting the manure in the bucket. you must mix it up in a way. it has to be soupy. that is like fun to me. >> more than 100 kilograms of pig and cow dung are mixed with water. the slurry has to flow easily through the loading pipe. the prison runs a farm that covers several hectars, so there's always enough manure. the inmates work with the animals as part of their rehabilitation program. the only problem i shshould say is when you are done with it, you smell like, i should say like a pig. you know, like a a pig i shoud say you smelling as. >> is that a problem for you? >> no it is not t a problem.whey clothes and it's like, and all pig scent is gone. >> t the biogas is used mostlyo power the slaughterhrhouse. for example,e, to heat watater. chickens are p plunged into ito loosen feathers before plucking. the excess dung left over at the end of theherocess is s gatherd and used as organic fertilizer. it's enough that the pris