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Biomass use, production, feed efficiencies, and greenhouse gas emissions from global livestock systems

By Mario T. Herrero, Petr Havlík, Hugo Valin, An Maria Omer Notenbaert, Mariana C. Rufino, Philip K. Thornton, Michael Blümmel, F. Weiss, Delia Grace and Michael Obersteiner

Abstract

We present a unique, biologically consistent, spatially disaggregated global livestock dataset containing information on biomass use, production, feed efficiency, excretion, and greenhouse gas emissions for 28 regions, 8 livestock production systems, 4 animal species (cattle, small ruminants, pigs, and poultry), and 3 livestock products (milk, meat, and eggs). The dataset contains over 50 new global maps containing high-resolution information for understanding the multiple roles (biophysical, economic, social) that livestock can play in different parts of the world. The dataset highlights: (i) feed efficiency as a key driver of productivity, resource use, and greenhouse gas emission intensities, with vast differences between production systems and animal products; (ii) the importance of grasslands as a global resource, supplying almost 50% of biomass for animals while continuing to be at the epicentre of land conversion processes; and (iii) the importance of mixed crop–livestock systems, producing the greater part of animal production (over 60%) in both the developed and the developing world. These data provide critical information for developing targeted, sustainable solutions for the livestock sector and its widely ranging contribution to the global food system

Topics: animal feeding, livestock
Publisher: 'Proceedings of the National Academy of Sciences'
Year: 2013
DOI identifier: 10.1073/pnas.1308149110
OAI identifier: oai:cgspace.cgiar.org:10568/34298
Provided by: CGSpace
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