World livestock production systems - Current status, issues and trends
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Within the world's livestock sector, broad production systems are defined and delineated. The criteria for the classification of world's livestock production systems are limited to integration with crops, relation to land and agro-ecological zones. A quantitative and qualitative description is given for each identified livestock production system in terms of feed and livestock resources, livestock commodities produced, production technology, product use and livestock functions, area covered, ge ographic locations, and human populations supported. Future trends and salient development issues are outlined for the systems and for the sector as a whole. The study also aims at providing insights into the importance of livestock systems across world regions and agro-ecological zones and related trends in order to provide orientation to decision-makers involved in livestock and agricultural development.