Contents of Some Essential Minerals in Forages for Ruminants in Adama, Ethiopia. A Case Study.

  • Silvio José Martínez Sáez Center for Animal Production Development Studies (CEDEPA), Faculty of Agricultural Sciences, University of Camagüey, Cuba.
  • Hayelom Deribaw Adama Science and Technology University, Ethiopia.
  • Tefera Entele Adama Science and Technology University, Ethiopia.
Palabras clave: mineral content, supplementation, grazing ruminants


The contents of phosphorous (P),  calcium (Ca),  sulphur (S), manganese (Mg),  sodium (Na),  potassium (K), iron (Fe), and copper (Cu), in graminaceae and legumes used for ruminant nutrition in the city of Adama, Eth i-opia, were determined. The samples were taken at random, from grazing areas near the city, and in the food market for these animals. The Molibdovanate method was used to determine P ; Ca,Mg and Cu were determined by the atomic adsorption spectroscopic met hod with flame; Na and K were determined by flame photo-metry; and S, by the turbidimetric method. The values were compared with the values reported for  these animal requirements. Deficiencies of Cu, P and Na  were  found in all the samples analyzed. King Grass, wheat and  teff stalks, important sources of nutrients du ring the dry season, were the scarcest. Statistics (P < 0.05) showed that, as a group, graminaceae were more mineral deficient than legumes. A study of certain mineral sources from the area is recommended for use as raw materials for salt production.


ALEMU, Y. (2008). Nutrition and Feeding of Sheep and Goats. In Sheep and Goat Production Handbook for Ethiopia. Extraído en junio de 2013, desde

AOAC (1995). Official Methods of Analysis (16th edition). Washington, DC: Association of Official Analytical Chemist.

FAO (2008). Guide to Laboratory Establishment for Plant Nutrient Analysis. Fertilizer and Plant Nutrition Bulletin, 9, 40-81. Rome: Food and Agriculture Organization of the United Nations (FAO).

KABAIJA, E. y LITTLE, D. A. (2012). Nutrient Quality of Forages in Ethiopia with Particular Reference to Mineral Elements. Extraído en dicembre de 2012, desde

MARTÍNEZ, S.; GUEVARA, R.; CURBELO, L.; PEDRAZA, R. e HIDALGO, D. (2007). Contenidos minerales de pastos más utilizados por rebaños vacunos lecheros al oeste de la ciudad de Camagüey, Cuba. Rev. prod. anim., 19 (2), 2007.

MCDOWELL, L. R.; VELÁSQUEZ-PEREIRA, J. y VALLE, G. (1997). Minerals for Grazing Ruminant in Tropical Regions. Gainesville, EUA: Department of Zootechnics, Centre of Tropical Agricultura, University of Florida.

SUTTLE, N. F. (2010). Mineral nutrion of livestock. UK: Pentland Science Park. Extraído en abril de 2014, desde Nutrition.pdf.

TILAHUN, S.; VIJCHULATA, S.; CHAIRATANAYUTH, P. y SWASDIPHANICH, S. (2007). Effects of Natural Mineral Soils on Body Weight and Liver Minerals of Black Head Somali Sheep in Ethiopia. Kasetsart J. (Nat. Sci.), 41, 288-299.

TOLERA, A. (2008). Feed resources and feeding management. Addis Ababa, Ethiopia: Ethiopia Sanitary and phytosanitary Standards and Livestock and Meat Marketing Program (SPS-LMM).

YEMI, A. (2008). Nutrition and Feeding of sheep and Goats. In Sheep and Goat Production Handbook. Ethiopia. Extraído en abril 2013, desde
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