The potential of local shrubs as feed for livestock and the mineral content of some soils and soil-licks in Central Tanzania. Two minor field studies.

acacia mellifera albizia analyse de sol besoin nutritionnel bovin browse plants calcio calcium caprin caprinos cattle cobalt cobalto cobre contenido mineral copper cuivre fosforo ganado bovino goats grewia leucaena leucocephala magnesio magnesium manganese manganeso mineral content molibdeno molybdenum natural pastures necesidades de nutrientes nutritional requirements nutritive value ovin ovinos pastizal natural phenolic content phosphore phosphorus plantas de ramoneo potasio potassium prairie naturelle selenio selenium sheep silicium silicon sodio sodium soil testing substance toxique taninos tannin tannins tanzania tanzanie toxic substances valeur nutritive valor nutritivo