 | Abstract 28The contents of major minerals, sulphur and trace elements in Pangola grass and savannas in Guadeloupe (F.W.I.).Aumont,-G; Xande,-A INRA-CRZV de Theix, Laboratoire des Maladies nutritionnelles, 63122 Ceyrat, France. Paturages et alimentation des ruminants en zone tropicale humide. 1989, 127-135; 30 ref., presented at 1st symposium on ruminant nutrition in tropical conditions, Pointe-a-Pitre, Guadeloupe, 2-6 June 1987. Paris, France; INRA. The Ca, P, Mg, K, Na, S, Cu, Mo, Zn, Mn, Se, Co and I contents of Digitaria decumbens and natural grasslands from 3 areas of Guadeloupe were determined. Cuts were taken in the wet and dry seasons at 28 and 42 days regrowth. The main species in the natural grassland were Dichanthium aristatum, D. annulatum, Stenotaphrum secundatum, Sida ciliaris, Bothriochloa pertusa, Axonopus compressus, Paspalum conjugatum, Echinochloa spp., Panicum laxum and P. distichum. Contents of all elements were greater in the dry season than the wet season and varied between the 3 sites due to varying soil pH and P solubility. Ca, Mg, S, Se, Co and I contents tended to be higher in natural grassland than in D. decumbens, while P, Na, K, Cu, Mo and Zn were highest in D. decumbens. P, Cu, Zn and Se were the elements most often below the nutritional requirements of ruminants. This abstract relates to the following species:
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