Tropical Grasslands (1989) Volume 23, 143152
FEED SUPPLY AND DEMAND OF A SHEEP PRODUCTION SYSTEM IN THE MONTANE PLAINS (YEMEN ARAB REPUBLIC)
Agricultural University, Dept. of Field Crops and Grassland Science, Haarweg 333, 6709 PH Wageningen, The Netherlands
A mixed farming system occurs in the Montane Plains of the Yemen Arab Republic. The area has a semi-arid climate and is basically a highland plain at an elevation of 2400 m above sea level. Livestock are kept alongside rain-fed and irrigated crop cultivation. Sheep obtain approximately 40% of their feed requirements from the rangelands, 35% from cropland stubble and weeds, and the remaining 25% largely from crop-residues and fodder crops. Within the traditional system, all feed resources are fully utilised. Current developments result in more intensive (irrigated) crop cultivation. Consequently there is an ample supply of crop-residues and sheep make less use of the rangeland feed resources.