Swill is food for animals in liquid or partly liquid form.
The term can also be used as an extremely derogatory label for any drink meant for human ingestion perceived as unpalatable or nearly so.
Historically pig farmers arranged collection of swill, e.g. by means of swill bins. The grease was skimmed off the swill tanks and sold for further processing, while the remaining swill was processed into pig food.
During the 2001 United Kingdom foot-and-mouth outbreak it was thought that unprocessed pig swill was a key link in the chain of the infection, and it was banned in Great Britain. In 2003 the ban was expanded to the whole European Union.
There is now significant research () and support from farmers ( for a return to feeding swill to pigs, not only as a way to reduce pig feed costs but also to reduce demands on agricultural land for pig feed.
- "the definition of swill". Dictionary.com.
- "the definition of hogwash". Dictionary.com.
- "Food scraps and pig swill: how Britain coped in and after WW2". www.1900s.org.uk.
- Should pig swill from waste food be back on the menu?, BBC, 20 August 2013
- "Feeding food waste to pigs could save vast swathes of threatened forest and savannah".
- "Farmer back introduction of swill as pig feed, poll feeds".