The blow (or shot) is intended to kill the horse instantly or stun it,[4] with exsanguination (bleeding out) conducted immediately afterwards to ensure death.
According to equine-welfare advocates, the physiology of the equine cranium is such that neither the penetrating captive bolt gun nor gunshots are reliable means of killing (or stunning) a horse; the animal may be only paralyzed.
During World War II, the less-motorized Axis troops lost thousands of horses in combat and during the unusually-cold Russian winters.
[19] In 2019, Ireland's Department of Agriculture released figures on the numbers of horses slaughtered at government-approved abattoirs for human consumption.
The numbers peaked in 2012, but significantly decreased the following year due to stricter regulations put in place after the 2013 horse meat scandal in Europe.
Meat from American horses raises a number of potential health concerns, primarily due to the routine use of medications banned in food animals and a lack of tracking of such use.
During November and December 2010 inspections of EU-regulated plants in Mexico which slaughtered horses for human consumption, the European Commission Food and Veterinary Office (FVO) uncovered violations.
[36] In March 2012, Wyoming state Representative Sue Wallis proposed a new horse-meat processing plant in Missouri or Arkansas.
[37] In May Wallis sought local investors in Wyoming to help finance the plant, which she said could cost between two and six million dollars and would process up to 200 horses a day for sale abroad and to ethnic markets in the US.
[38] In 2013 the Obama Administration proposed the removal of funding for USDA inspection of horse-slaughter plants in the 2014 fiscal year, which would prevent horse slaughter.
[40] States are able to individually ban the slaughter of horses without federal approval, but the USDA operates through a federally-funded budget by the President and the Senate and House Appropriations Committees.
[43] Using the budget to block inspection means that continuation of the ban is subject to review each year, and did not ensure that changes could not be made by future congresses.
[45] The USDA resisted by creating a loophole with regulation CFR 352.19 which allowed existing slaughterhouses to pay inspectors directly instead of the agency relying on federal funding.
[47] Efforts have been made to create a federal law ending the slaughter of American horses for human consumption.
The latter was introduced on July 9, 2011, by Senators Mary Landrieu (D-LA) and Lindsey Graham (R-SC) to amend the Horse Protection Act of 1970 (15 U.S.C.
44) to prohibit the shipping, transporting, moving, delivering, receiving, possessing, purchasing, selling, or donation of horses and other equines to be slaughtered for human consumption.
The highest fines imposed were $230,000.00 on Charles Carter of Colorado, $162,000 on Leroy Baker of Ohio and $77,825 on Bill Richardson of Texas.
[57] A 2007–2015 investigation by Animals' Angels found overcrowded pens, aggression, rough handling, transport with no rest, untreated injuries and no water or food for more than the 28 hours required by law.
[58] On February 22, 2007, Representative Robert Molaro introduced HB1711 to the Illinois General Assembly to prohibit the transport of horses into the state for the sole purpose of slaughter for human consumption.
On November 18, 2011, the ban on the slaughter of horses for meat was lifted as part of the Consolidated and Further Continuing Appropriations Act for Fiscal Year 2012.
[64] On March 6, 2007, without comment or dissent, the 19 judges of the 5th Circuit rejected a petition by three foreign-owned slaughter plants seeking a full court review of the panel's January 19 decision.
[67] The issue came to light on January 15, 2013, when it was reported that equine DNA had been discovered in frozen beefburgers sold at several Irish and British supermarkets.