Global meat production has tripled in the past three decades and could double its present level by 2050, according to a new report on the livestock industry by an international team of scientists and policy experts. The impact of this "livestock revolution" is likely to have significant consequences for human health, the environment and the global economy, the authors conclude.

"The livestock industry is massive and growing," said Harold A. Mooney, co-editor of the two-volume report, Livestock in a Changing Landscape (Island Press). Mooney is a professor of biology, senior fellow at the Woods Institute for the Environment and senior fellow at FSI, by courtesy.

"This is the first time that we've looked at the social, economic, health and environmental impacts of livestock in an integrated way and presented solutions for reducing the detrimental effects of the industry and enhancing its positive attributes," he said.

Among the key findings in the report are:

• More than 1.7 billion animals are used in livestock production worldwide and occupy more than one-fourth of the Earth's land.
• Production of animal feed consumes about one-third of total arable land.
• Livestock production accounts for approximately 40 percent of the global agricultural gross domestic product.
• The livestock sector, including feed production and transport, is responsible for about 18 percent of all greenhouse gas emissions worldwide. 

Impacts on humanity

Although about 1 billion poor people worldwide derive at least some part of their livelihood from domesticated animals, the rapid growth of commercialized industrial livestock has reduced employment opportunities for many, according to the report. In developing countries, such as India and China, large-scale industrial production has displaced many small, rural producers, who are under additional pressure from health authorities to meet the food safety standards that a globalized marketplace requires.

Beef, poultry, pork and other meat products provide one-third of humanity's protein intake, but the impact on nutrition across the globe is highly variable, according to the report. "Too much animal-based protein is not good for human diets, while too little is a problem for those on a protein-starved diet, as happens in many developing countries," Mooney noted.

While overconsumption of animal-source foods - particularly meat, milk and eggs - has been linked to heart disease and other chronic conditions, these foods remain a vital source of protein and nutrient nutrition throughout the developing world, the report said. The authors cited a recent study of Kenyan children that found a positive association between meat intake and physical growth, cognitive function and school performance.

Human health also is affected by pathogens and harmful substances transmitted by livestock, the authors said. Emerging diseases, such as highly pathogenic avian influenza, are closely linked to changes in the livestock production but are more difficult to trace and combat in the newly globalized marketplace, they said.

Environmental impacts

The livestock sector is a major environmental polluter, the authors said, noting that much of the world's pastureland has been degraded by grazing or feed production, and that many forests have been clear-cut to make way for additional farmland. Feed production also requires intensive use of water, fertilizer, pesticides and fossil fuels, added co-editor Henning Steinfeld of the United Nations Food and Agriculture Organization (FAO).

Animal waste is another serious concern. "Because only a third of the nutrients fed to animals are absorbed, animal waste is a leading factor in the pollution of land and water resources, as observed in case studies in China, India, the United States and Denmark," the authors wrote. Total phosphorous excretions are estimated to be seven to nine times greater than that of humans, with detrimental effects on the environment.

The beef, pork and poultry industries also emit large amounts of carbon dioxide, methane and other greenhouse gases, Steinfeld said, adding that climate-change issues related to livestock remain largely unaddressed. "Without a change in current practices, the intensive increases in projected livestock production systems will double the current environmental burden and will contribute to large-scale ecosystem degradation unless appropriate measures are taken," he said.

Solutions

The report concludes with a review of various options for introducing more environmentally and socially sustainable practices to animal production systems.

"We want to protect those on the margins who are dependent on a handful of livestock for their livelihood," Mooney said. "On the other side, we want people engaged in the livestock industry to look closely at the report and determine what improvements they can make."

One solution is for countries to adopt policies that provide incentives for better management practices that focus on land conservation and more efficient water and fertilizer use, he said.

But calculating the true cost of meat production is a daunting task, Mooney added. Consider the piece of ham on your breakfast plate, and where it came from before landing on your grocery shelf. First, take into account the amount of land used to rear the pig. Then factor in all the land, water and fertilizer used to grow the grain to feed the pig and the associated pollution that results.

Finally, consider that while the ham may have come from Denmark, where there are twice as many pigs as people, the grain to feed the animal was likely grown in Brazil, where rainforests are constantly being cleared to grow more soybeans, a major source of pig feed.

"So much of the problem comes down to the individual consumer," said co-editor Fritz Schneider of the Swiss College of Agriculture (SHL). "People aren't going to stop eating meat, but I am always hopeful that as people learn more, they do change their behavior. If they are informed that they do have choices to help build a more sustainable and equitable world, they can make better choices."

Livestock in a Changing Landscape is a collaboration of the FAO, SHL, Woods Institute for the Environment, International Livestock Research Institute (ILRI), Scientific Committee for Problems of the Environment (SCOPE), Agricultural Research Center for International Development (CIRAD), and Livestock, Environment and Development Initiative (LEAD).

Other editors of the report are Laurie E. Neville (Stanford University), Pierre Gerber (FAO), Jeroen Dijkman (FAO), Shirley Tarawali (ILRI) and Cees de Haan (World Bank). Initial funding for the project was provided by a 2004 Environmental Venture Projects grant from the Woods Institute.

Editor's Note

To obtain a copy of Livestock in a Changing Landscape, contact Angela Osborn at Island Press: (202) 232-7933 (extension 35) or aosborn@islandpress.org.

Projects to enhance health security and child survival in Africa with improvements in water and sanitation, examine why poor business-management practices persist in India, study the relationship of legal courts to politics and human rights, and understand why the Middle East has lagged in economic progress were recent recipients of grants totaling just under $1 million from Stanford's Presidential Fund for Innovation in International Studies.

"These projects have great potential to advance academic knowledge, social capital and human development around the world, and to create a healthier, more promising future for hundreds of millions of people," President John Hennessy said. "When we launched The Stanford Challenge, we committed to marshal university resources to address the great challenges of the 21st century in human health, the environment and international affairs, and it is gratifying to see the response from our remarkable faculty."

The 2008 projects and their principal investigators follow:

Enhancing Health Security Through Infrastructure and Behavioral Intervention: Water, Sanitation and Child Survival in Africa. Alexandria Boehm and Jenna Davis, Civil and Environmental Engineering; Abby King, Health Research and Policy and Medicine; Gary Schoolnik, Medicine and Microbiology and Immunology. The project seeks to improve the health and well-being of the 1.2 billion people in low-income countries who lack access to clean water and the 2.6 billion who lack access to sanitation services, with a focus on mortality reduction in children. It will be carried out in sub-Saharan Africa, where the toll of water- and sanitation-related illness on health is severe, and will investigate the extent to which information and education about water and sanitation at the household level motivates behavior changes that result in reduced morbidity. Results will inform international efforts to design and implement effective water supply and sanitation interventions for more than 400 million Africans currently lacking access.

Why Are Indian Firms Poorly Managed? A Survey and Randomized Field Intervention. Nicholas Bloom and Aprajit Mahajan, Economics; Thomas C. Heller and Erik Jensen, Law School; John Roberts, Graduate School of Business. The biggest single reduction in poverty in the history of mankind was achieved by the industrialization of China since 1978, which lifted almost 500 million people out of poverty. India has not experienced this level of poverty reduction because its manufacturing firms have not achieved the productivity gains seen in China. Recent evidence suggests one key factor is the poor management practices adopted by Indian firms. This project examines why poor management practices persist in India and are much more common there. It focuses in particular on evaluating the relative importance of informational, legal and development barriers. The project will undertake a field survey of Indian firms to evaluate their knowledge of modern management techniques and a field intervention aimed at upgrading management practices in a randomized sample of Indian firms, comparing their progress to a control group of untouched firms.

Courts, Politics and Human Rights. Joshua Cohen, Philosophy, Political Science, and Law School; Terry L. Karl, Political Science; Jenny S. Martinez, Law School; Helen Stacy, Law School. This project examines the role of courts as the centerpiece of strategies for promoting human rights by asking if courts should be a preferred human rights venue or if there are other more accessible and effective ways to secure human rights. It addresses three broad themes: the interplay between national, regional and international courts in the protection of human rights; the role of governments and nongovernmental organizations in influencing legal proceedings; and how courts construct historical truth and shape public opinion, memory, attitudes and discourse about human-rights abuses. The multidisciplinary project will span countries, regions, issue areas and historical timeframes to ask what reasonably can be expected from international, regional and domestic courts in safeguarding human rights.

The Middle East and the World Economy. Matthew Harding, Economics; Lisa Blaydes, Political Science. This project examines why the Middle East has lagged in economic progress compared to much of the developing world and the implications of this underdevelopment for two overarching trends in Middle Eastern politics today: authoritarian government and Islamic fundamentalism. The researchers also will examine how political instability originating in the Middle East has affected world oil prices and world markets by constructing economic models of the world economy. The project seeks broadly to understand the macro- and microeconomic determinants of Islamic fundamentalism and authoritarian rule, and the extent to which these two outcomes have affected the stability and prosperity of the world economy. It measures global factors resulting from increased globalization and quantifies their impact on the development of economies in the Middle East.

The $3 million Presidential Fund for Innovation in International Studies was first established in 2005 by the Office of the President and the Stanford International Initiative to support new cross-campus, interdisciplinary research and teaching among Stanford's seven schools on three overarching global challenges: pursuing peace and security, reforming and improving governance at all levels of society, and advancing human well-being.

The first $1 million in interdisciplinary grants was awarded in February 2006; the second round of grants was awarded in February 2007.

"In all three rounds of funding, it has been heartening to see the imaginative and innovative ways that Stanford faculty are combining intellectual forces across disciplines to tackle some of the most pressing and persistent problems of our day," said Coit D. Blacker, chair of the International Initiative Executive Committee and director of Stanford's Freeman Spogli Institute for International Studies. "It is especially gratifying to see the younger faculty competing for these grants, eager to generate new knowledge and new solutions and help train a new generation of leaders."

Priority in funding has been given to teams of faculty who do not typically work together, who represent multiple disciplines and who address issues falling broadly within the three central research areas of the Stanford International Initiative. Projects are to be based on collaborative research and teaching involving faculty from two or more disciplines and, where possible, from two or more of the university's seven schools.