swill
{{Short description|Liquid (or partially liquid) food for animals}}
{{other uses}}
File:Pig swill auction poster.jpg
Swill is liquid (or partially liquid) food for animals.{{cite web|url=http://dictionary.reference.com/browse/swill?s=t|title=the definition of swill|website=Dictionary.com}}
The term can also be used as a derogatory label for any drink meant for human ingestion, perceived as unpalatable or nearly so.
Pig swill
Pig swill, hog swill, or hogwash is kitchen refuse used to feed pigs.{{cite web|url=http://dictionary.reference.com/browse/hogwash?s=t|title=the definition of hogwash|website=Dictionary.com}}
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 World War II, a collection of pig swill was a nationwide campaign in Great Britain.{{cite web|url=http://www.1900s.org.uk/1940s50s-pig-food-collection.htm|title=Food scraps and pig swill: how Britain coped in and after WW2|website=www.1900s.org.uk}}
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.[https://www.bbc.co.uk/news/uk-23769171 Should pig swill from waste food be back on the menu?], BBC, 20 August 2013
There is now significant research{{cite web|url=https://www.cam.ac.uk/research/news/feeding-food-waste-to-pigs-could-save-vast-swathes-of-threatened-forest-and-savannah|title=Feeding food waste to pigs could save vast swathes of threatened forest and savannah|date=10 December 2015 }} and support from farmers{{cite web|url=http://www.fwi.co.uk/livestock/farmers-back-reintroduction-on-swill-as-pig-feed-poll-finds.htm|title=Farmer back introduction of swill as pig feed, poll feeds|date=18 January 2016 }} 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. In the United States, 27 states, along with Puerto Rico and the US Virgin Islands, permit swill feeding, for which proper processing and a license is required. Swill feeding is prohibited in 23 states.{{cite web |url= https://www.aphis.usda.gov/publications/animal_health/fs-swine-producers-garbage-feeding.pdf | title= What Swine Growers Need to Know about Garbage Feeding | author = Animal and Plant Health Inspection Service| date = November 2019 | newspaper = | accessdate= 21 August 2022 | publisher= United States Department of Agriculture | archiveurl= https://web.archive.org/web/20200930195642/https://www.aphis.usda.gov/publications/animal_health/fs-swine-producers-garbage-feeding.pdf | archivedate=30 September 2020}}