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Bane farm National Pork Board

Study: U.S. pig farmers making sustainability progress

Analysis of 55 years of pig farming reveals gains in all key metrics.

America’s pig farmers continue to practice many of the principles of Earth Day, which is April 22, every day on their farms, and in many cases, have done so for generations. This fact is underscored by the results of a recent study from the University of Arkansas, which confirmed that today’s pork is more earth-friendly than ever thanks to great progress in multiple key sustainability metrics over more than five decades.

According to the new study, A Retrospective Assessment of U.S. Pork Production: 1960 to 2015, the inputs needed to produce a pound of pork in the United States have become more environmentally friendly over time. Specifically, 75.9% less land is needed, 25.1% less water and 7% less energy. This also has resulted in a 7.7% smaller carbon footprint.

To save as much water as today’s pig farms do over their predecessors of 50-plus years ago, the average American would have to take 90 fewer showers per year. Likewise, to understand the energy savings accomplished by pig farmers during the study period, a typical household would need to eliminate the use of a refrigerator altogether.

“The study confirms that U.S. pig farmers like me have been making progress in our ongoing commitment to do what’s best for people, pigs and the planet, which is at the heart of the industry’s We Care initiative,” says Steve Rommereim, National Pork Board president and a pig farmer from Alcester, S.D. “It’s encouraging to see this level of progress in environmental stewardship over the years. It also is helpful to have a benchmark to measure additional improvements.”


• Watch a video recapping pig farmers’ environmental sustainability efforts.

• See the full University of Arkansas study.

• Learn about the environmental sustainability ethical principles pig farmers follow.


Unlike some earlier studies, the new Pork Checkoff-funded study used a comprehensive life-cycle assessment approach and the best available methodology along with a field-to-farm gate approach. This means including material and energy flows associated with the full supply chain, beginning with extraction of raw materials through production of live, market-weight pigs, including marketed sows.

“As it has for decades, the U.S. pork industry will continue to make strides in overall efficiency, which is the major driver behind improving sustainability across all metrics,” Rommereim says.

This may come in terms of nutrition, genetics, health management, crop management and overall technology adoption. The ongoing trend is clearly seen in the Arkansas study. Feed conversion (pounds of feed needed for pound of pork gained) started at 4.5 in 1960 and ended at 2.8 in 2015 — a 38% improvement even while market hog weights went from 200 pounds to 281 pounds.

“Celebrating Earth Month in April provides an opportunity to not only recognize the environmental sustainability advancements of pig farming in the last five decades, but also to explore new ways to build on this progress going forward,” Rommereim says. “We look forward to the challenge of improving our current metrics of sustainability because it’s right for consumers, farmers, animals and the planet.”

Source: National Pork Board, which is solely responsible for the information provided, and wholly owns the information. Informa Business Media and all its subsidiaries are not responsible for any of the content contained in this information asset.
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