Show simple item record

dc.contributorHomann-Kee Tui, Sabineen_US
dc.contributorValbuena, Diegoen_US
dc.contributorDuncan, Alanen_US
dc.contributorHerrero, Marioen_US
dc.creatorBlummel, Michaelen_US
dc.identifier.citationMichael Blummel, Sabine Homann-Kee Tui, Diego Valbuena, Alan Duncan, Mario Herrero. (20/12/2013). Biomass in crop-livestock systems in the context of the livestock revolution. Science et changements planétaires/Sécheresse, 24(4), pp. 330-339.en_US
dc.description.abstractMixed crop-livestock systems are the dominant source of livelihood supporting more than 80% of people living in the developing world and producing 50% of world cereals, around 34% of the global beef production and about 30% of global milk production. However, mixed systems are coming under increasing pressure with their human population predicted to increase from 1,099 million in 2000 to 1,670 million people in 2030 and their cattle population to increase from 230 million to 317 million from 2000 to 2030. Coupled with this increase in human and livestock populations, cereal yields have been stagnating in sub-Saharan Africa (SSA) for the last 40 years (in contrast to growth rates of 1.5-2% per year for the rest of the developing world), with most increase in overall cereal production arising from expansion of arable land. Such trends cannot be maintained as land suitable for cropping is scarce, and additional cropland might also be more marginal and subject to greater climatic risks. There is increasing pressure on biomass in mixed systems and there are strong needs to find ways out of this ‘‘biomass trap’’ through increasing overall biomass yield and fodder quality and through increasing the efficiency of livestock production. Biomass from crop residues (CR) is used as a feed resource and as mulch to improve crop yields. Biomass is becoming scarcer and competition for CR is becoming more severe. This is reflected in changes of CR use from grazing to harvesting and storage, longer distances across which CR are transported and transacted and decreasing CR to grain ratios. The predicted increase in demand for livestock products, the so-called livestock revolution, will further fuel feed demand and increase the usage of CR for livestock feeding. Use of CR for mulch and conservation agriculture demands about 2 to 3 tons of CR per hectare which is often equal to their total yield under rain-fed conditions in the semi-arid tropics. Multidimensional crop improvement can mitigate competition for biomass by increasing CR quantity and by improving fodder quality. Increased CR yield will facilitate partitioning of CR between livestock and soil improvement and improved CR fodder quality will support intensification of livestock production where more animal sourced foods (ASF) can be produced with less feed. It is important to realize that feed biomass requirement is very context specific and decreases with increasing per unit animal productivity.en_US
dc.publisherJohn Libbey Eurotexten_US
dc.sourceScience et changements planétaires/Sécheresse;24,(2013) Pagination 330,339en_US
dc.subjectlivestock revolutionen_US
dc.subjectmixed croplivestock systemsen_US
dc.titleBiomass in crop-livestock systems in the context of the livestock revolutionen_US
dc.typeJournal Articleen_US
cg.creator.idValbuena, Diego: 0000-0002-8651-1455en_US
cg.creator.idDuncan, Alan: 0000-0002-3954-3067en_US
cg.creator.idHerrero, Mario: 0000-0002-7741-5090en_US
cg.subject.agrovoccrop residuesen_US
cg.subject.agrovocfeed resourcesen_US
cg.contributor.centerInternational Livestock Research Institute - ILRIen_US
cg.contributor.centerInternational Crops Research Institute for the Semi-Arid Tropics - ICRISATen_US
cg.contributor.centerInternational Center for Tropical Agriculture - CIATen_US
cg.contributor.centerCommonwealth Science and Industrial Research Organisation - CSIROen_US
cg.contributor.crpCRP on Dryland Systems - DSen_US
cg.contributor.funderNot Applicableen_US
cg.coverage.regionMiddle Africaen_US
cg.coverage.regionWestern Africaen_US
cg.coverage.regionEastern Africaen_US
cg.coverage.regionNorthern Africaen_US
dc.identifier.statusLimited accessen_US
cg.journalScience et changements planétaires/Sécheresseen_US

Files in this item


There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

DSpace software copyright © 2002-2016  DuraSpace
MELSpace content providers and partners accept no liability to any consequence resulting from use of the content or data made available in this repository. Users of this content assume full responsibility for compliance with all relevant national or international regulations and legislation.
Theme by 
Atmire NV