<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors></contributors><titles><title><style face="normal" font="default" size="100%">Exploitation of natural resources of the “dehesa” for meat production</style></title><secondary-title><style face="normal" font="default" size="100%">ressources.ciheam.org</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">Submitted</style></year></dates><pages><style face="normal" font="default" size="100%">311-313</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">“Exploitation des ressources naturelles de la “dehesa” pour la production de viande”. Dans les 20 dernières années, l'exploitation des ressources naturelles du “dehesa” (la région boisée de la Méditerranée) située au sud-ouest de la Péninsule Ibérique, a changé d'un système économique de subsistance (la production de bétail de famille, le bois de chauffage, le charbon de bois, la chasse, etc.) à un système intégré visant le bénéfice économique. La grande source de richesse du “dehesa” est basée la production annuelle généreuse de fruits (des glands de chêne) dans un écosystème caractérisé par un sol pauvre et une pluviométrie faible. En raison de la composition en lipides, avec d’hautes pourcentages d'acides gras mono-nonsaturés, les glands sont le régime d'alimentation parfait pour des animaux abattus aux hauts poids et orientés pour élaborer les produits de grande qualité. La large présence de forêt de Chêne au nord de l'Afrique, avec les mêmes caractéristiques que la forêt de “dehesa” ibérien, peut être une bonne raison pour mettre en oeuvre des programmes de collaboration entre des régions géographiques à potentiel comparable. Le but final de ces programmes doit être d améliorer le niveau de revenu de la population rurale et forestière.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>3</ref-type><contributors></contributors><titles><title><style face="normal" font="default" size="100%">Levels of bioelements and their relation to the ruminants ' needs in the most important pasture-plant species of the wooded dehesa ( grazing-land ) in the south-west of Spain</style></title><secondary-title><style face="normal" font="default" size="100%">Dynamics and sustainability of Mediterranean pastoral systems . CIHEAM, (Cahiers Options Méditerranéennes; n. 39)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1999</style></year></dates><publisher><style face="normal" font="default" size="100%">CIHEAM</style></publisher><pub-location><style face="normal" font="default" size="100%">Zaragoza</style></pub-location><volume><style face="normal" font="default" size="100%">255</style></volume><pages><style face="normal" font="default" size="100%">251-255</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">- The Trifolium subterraneum and Orithopus compressus species, together are considered the most important pasture plants (pratenses) with the gramineae group of the wooded 'dehesa' of Edremadura. In the present paper 5 representative &quot;dehesas&quot; (pasture lands) of the south-west of the province of Badajoz (200,000 ha) are studied over a period of two agricultural years (1 993-94 and 94-95). Soils and plants were analysed every fortnight approximately, from Autumn until the end of Spring. Samples of plants from the different plots were taken to check the proportions of N, P, K, Ca and Mg. Climatologically two different weather conditions were studied, a year of almost average rainfall and another of extreme drought. The minimum values for these 5 elements were revised. The Nitrogen proportion in both leguminous species was above the required minimum level (even in dry grass), for the ruminant feeding (over 1.5% and up to 3.5% in January and February), whereas there was a deficiency of Nitrogen in the gramineae group from April on. Regarding Phosphorus, as the plant becomes mature a decrease is noted, which was stressed in the final months of the cycle; all the dehesas studied except Manpolín reached lower rates than the minimum required (0.20%). The potassium evolved in a similar way that of P, although deficiencies (minimum 0.60%) arose only in Campos de Oliva. Its behaviour was similar in both years. Calcium had a similar behaviour in all the dehesas studied along the vegetative cycle. It was always above the minimum level (0.30%) in the gramineae from April on in both years. Magensium results were similar to those of Calcium</style></abstract></record></records></xml>