A report entitled "Livestock and Climate Change" published by the World Watch Institute (WWI) in the most recent issue of World Watch (November / December) states that livestock and their by-products account for at least the greenhouse gas emissions 51% of total global emissions far exceed the previous FAO estimate of 18%.
The author of the report, Robert Goodland, is an authoritative environmental consultant who retires after 23 years at the World Bank. In 2008, he was awarded the First Class Coolidge Medal by the World Conservation Union (IUCN) for his outstanding contribution to environmental protection. Another author, Jeff Anhang, is an environmental expert and researcher at the World Bank International Finance Corporation, providing private sector financing and consulting to developing countries.
The report points out that in the previous report of the United Nations Food and Agriculture Organization, the huge shadow of livestock: environmental problems and choices, it is estimated that 7.516 billion tons of carbon dioxide equivalent greenhouse gases are emitted by cattle, sheep, camels, horses, pigs and poultry, accounting for 18% of total emissions. "But our analysis shows that livestock and their by-products actually emit at least 32.564 billion tons of carbon dioxide equivalent greenhouse gases, accounting for 51% of the world's total emissions." The authors pointed out that after reviewing all direct and indirect emissions, they found that some of the emissions were clearly underestimated, while others were simply ignored, and some of the emissions, although calculated, were incorrectly included in others. Department.
The authors pointed out in the report that their estimated figures are still conservative. The neglected and underestimated sources of livestock greenhouse gas emissions listed in the report (see table below) are: animal respiration, land use, and methane.