This book covers the
subject of
grasslands used for
grazing livestock.
Grasslands can be split into
improved and
unimproved pastures (also a sub-set of rangelands). Land used for livestock industries occupy 70 percent agricultural land and about 40 percent of total land and produce 40 percent of agricultural gross domestic product (FAO, 2005; Steinfeld et al., 2006). Increasing populations and incomes, coupled with a change in diets and urbanisation in the developing world, is enhancing demand for pasture-based products (Devine, 2003; Schmidhuber and Shetty, 2005). For example, milk and meat production is predicted to double to just over 1 billion tonnes of milk and 465 million tonnes of meat by 2050 (Steinfeld et al., 2006). To meet these demands most effort will go into intensification of improved pastures, which translates into high stocking densities supported by large inputs of fertilisers, feed supplements and energy..
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