Editing Intensive pig farming (section)

==Regulation==
Many countries have introduced laws to regulate treatment of intensively farmed pigs. However, there is no legal definition for free-range pigs, so retailers can label pork products as free-range without having to adhere to any standards or guidelines.<ref>{{Cite web|url=https://www.animalaid.org.uk/wp-content/uploads/2016/08/Highwelfare.pdf|title=What's Wrong with High-Welfare Animal Products?|website=Animal Aid}}</ref> Only 3% of [[UK]] pigs spend their entire lives outdoors.<ref>{{Cite web|url=https://www.rspca.org.uk/adviceandwelfare/farm/pigs/farming|title=Pig farming - Pig welfare - Free range pork|website=rspca.org.uk|language=en-US|access-date=2019-06-03}}</ref>

===European Union===
As of 2016, The European Union legislation has required that pigs be given environmental enrichment, specifically they must have permanent access to a sufficient quantity of material to enable proper investigation and manipulation activities.<ref>{{cite web|url=http://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32016H0336|title=COMMISSION RECOMMENDATION (EU) 2016/336|website=EUR-Lex.europa.eu|date=9 March 2016 |access-date=11 October 2017}}</ref>

Under the legislation tail docking may only be used as a last resort. The law provides that farmers must first take measures to improve the pigs' conditions and, only where these have failed to prevent tail biting, may they tail dock.<ref name=ciwf08>{{cite web|url=http://www.ciwf.org.uk/resources/publications/pig_farming/default.aspx|title=Species: pigs - Compassion in World Farming|website=Ciwf.org.uk|access-date=28 July 2017}}</ref>

===United States===
As of 2023, ten states have banned the use of gestation crates: Arizona, California, Colorado, Florida, Maine, Massachusetts, Michigan, Ohio, Oregon, and Rhode Island.<ref>{{cite web |last1=Ufer |first1=Danielle J. |title=Farm Animal Welfare Policies Cover Breeding Sows, Veal Calves, or Laying Hens in 14 U.S. States |url=https://www.ers.usda.gov/amber-waves/2023/april/farm-animal-welfare-policies-cover-breeding-sows-veal-calves-or-laying-hens-in-14-u-s-states/ |publisher=[[United States Department of Agriculture]] |access-date=May 13, 2023 |archive-url=https://web.archive.org/web/20230502155040/https://ers.usda.gov/amber-waves/2023/april/farm-animal-welfare-policies-cover-breeding-sows-veal-calves-or-laying-hens-in-14-u-s-states/ |archive-date=May 2, 2023 |date=April 24, 2023}}</ref> [[2018 California Proposition 12|Proposition 12]], a California ballot measure passed in 2018, also bans the sale of whole, uncooked pork cuts throughout the state if the producers are noncompliant with the ban, affecting both in-state and out-of-state pig farmers.<ref>{{cite web |last1=Marceau |first1=Justin |last2=Kysar |first2=Doug |title=The Supreme Court's ruling on Prop 12 is a win against factory farming. But the pigs' lives will still suck. |url=https://www.vox.com/future-perfect/23721488/prop-12-scotus-pork-pigs-factory-farming-california-bacon |publisher=[[Vox (website)|Vox]] |access-date=May 13, 2023 |archive-url=https://web.archive.org/web/20230513053451/https://www.vox.com/future-perfect/23721488/prop-12-scotus-pork-pigs-factory-farming-california-bacon |archive-date=May 13, 2023 |date=May 12, 2023 |url-status=live}}</ref>

Discharge from [[concentrated animal feeding operation]]s (CAFOs) is regulated by the federal [[United States Environmental Protection Agency|Environmental Protection Agency]] (EPA). In 2003, EPA revised the [[Clean Water Act]] to include permitting requirements and discharge limitations for CAFOs. {{As of|2008|alt=In 2008}}, EPA revised the National Pollutant Discharge Elimination System (NPDES) by requiring CAFOs to apply for permits before they can discharge manure.<ref>{{cite web |url=http://www.epa.gov/npdes/regulations/cafo_final_rule_preamble2008.pdf |title=Archived copy |access-date=2011-04-09 |url-status=dead |archive-url=https://web.archive.org/web/20090509223658/http://www.epa.gov/npdes/regulations/cafo_final_rule_preamble2008.pdf |archive-date=2009-05-09 }}</ref>

The federal [[Humane Slaughter Act]] requires pigs to be stunned before slaughter, although compliance and enforcement is questioned. There is concern from animal liberation and welfare groups that the laws have not resulted in a prevention of animal suffering and that there are "repeated violations of the Humane Slaughter Act at dozens of slaughterhouses".<ref>{{cite web|url=http://www.awionline.org/pubs/Quarterly/summer2001/hsaintroduced.htm|title=Animal Welfare Institute Quarterly – Humane Slaughter Act Resolution Introduced|website=Awionline.org|access-date=28 July 2017|url-status=dead|archive-url=https://web.archive.org/web/20160303193545/http://www.awionline.org/pubs/Quarterly/summer2001/hsaintroduced.htm|archive-date=3 March 2016}}</ref>