The importance of grasslands for animal production and other functions: a review on management and methodological progress in the tropics

Boval, M. and Dixon, R.M. (2012) The importance of grasslands for animal production and other functions: a review on management and methodological progress in the tropics. Animal, 6 5: 748-762. doi:10.1017/S1751731112000304


Author Boval, M.
Dixon, R.M.
Title The importance of grasslands for animal production and other functions: a review on management and methodological progress in the tropics
Journal name Animal   Check publisher's open access policy
ISSN 1751-7311
Publication date 2012-05
Sub-type Article (original research)
DOI 10.1017/S1751731112000304
Volume 6
Issue 5
Start page 748
End page 762
Total pages 15
Place of publication Cambridge, United Kingdom
Publisher Cambridge University Press
Collection year 2013
Language eng
Abstract The global importance of grasslands is indicated by their extent; they comprise some 26% of total land area and 80% of agriculturally productive land. The majority of grasslands are located in tropical developing countries where they are particularly important to the livelihoods of some one billion poor peoples. Grasslands clearly provide the feed base for grazing livestock and thus numerous high-quality foods, but such livestock also provide products such as fertilizer, transport, traction, fibre and leather. In addition, grasslands provide important services and roles including as water catchments, biodiversity reserves, for cultural and recreational needs, and potentially a carbon sink to alleviate greenhouse gas emissions. Inevitably, such functions may conflict with management for production of livestock products. Much of the increasing global demand for meat and milk, particularly from developing countries, will have to be supplied from grassland ecosystems, and this will provide difficult challenges. Increased production of meat and milk generally requires increased intake of metabolizable energy, and thus increased voluntary intake and/or digestibility of diets selected by grazing animals. These will require more widespread and effective application of improved management. Strategies to improve productivity include fertilizer application, grazing management, greater use of crop by-products, legumes and supplements and manipulation of stocking rate and herbage allowance. However, it is often difficult to predict the efficiency and cost-effectiveness of such strategies, particularly in tropical developing country production systems. Evaluation and on-going adjustment of grazing systems require appropriate and reliable assessment criteria, but these are often lacking. A number of emerging technologies may contribute to timely low-cost acquisition of quantitative information to better understand the soil-pasture-animal interactions and animal management in grassland systems. Development of remote imaging of vegetation, global positioning technology, improved diet markers, near IR spectroscopy and modelling provide improved tools for knowledge-based decisions on the productivity constraints of grazing animals. Individual electronic identification of animals offers opportunities for precision management on an individual animal basis for improved productivity. Improved outcomes in the form of livestock products, services and/or other outcomes from grasslands should be possible, but clearly a diversity of solutions are needed for the vast range of environments and social circumstances of global grasslands.
Keyword Pastures
Strategies
Technology
Indicator
Grazing
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Online publication 28 February 2012.

Document type: Journal Article
Sub-type: Article (original research)
Collections: Queensland Alliance for Agriculture and Food Innovation
Official 2013 Collection
 
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Citation counts: TR Web of Science Citation Count  Cited 19 times in Thomson Reuters Web of Science Article | Citations
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