01583naa a2200217 a 450000100080000000500110000800800410001910000190006024500460007926000090012530000150013450000180014952009130016765000180108065000130109865300220111170000140113370000170114770000170116477301840118110286452019-05-30       2000    bl uuuu     u00u1 u    #d1 aBERRETTA, E.J.  aCampos in Uruguay.h[electronic resource]  c2000  ap. 377-394  aCapítulo 19.  aBeef and sheep meat, wool and dairy productions are the most important sources of goods in the country. Animal production systems are based on all-year-round graz- ing, mostly mixed (cattle and sheep together) and generally dependent on natural grassland, corresponding to 83% of the total 16,000,000 ha available for production.  Traditionally, animal husbandry practices based on native pastures have shown comparative advantages, but, in order to improve the economic profits of farmers, it has become increasingly necessary to improve such productive levels. The complementary use of such campos, with variable proportions of improved campos  or highly productive cultivated pastures, makes it possible to increase farm productivity. The general productive conditions of the country and the description of the main pasture and animal research proposals according to regions are discussed in this chapter.  aCAMPO NATURAL  aPASTURAS  aNATURAL GRASSLAND1 aRISSO, D.1 aMONTOSSI, F.1 aPIGURINA, G.  tIn: LEMAIRE, G.; HODGSON, J.; DE MORAES, A.; CARVALHO, P.C. DE F.; NABINGER, C. (Ed.). Grassland ecophysiology and granzing ecology. Oxfordshire, OX (UK): Cab International, 2000.