Alternativa silvopastoril para trópico alto con base en bancos forrajeros con Dalia (Dahlia Imperialis) y Sauco (Sambucus Nigra) en el páramo de Cruz Verde, Ubaque, Cundinamarca, Colombia

Abstract

Paramo ecosystem has a primordial function in hydric regulation of the basin, for this reason land use must be hydric resource, fauna and flora conservation. The objective of the study was evaluate a silvopastoral system for cut and carry based on the shrub dalia (Dahlia imperialis) and elderberry (Sambucus nigra) in Cruz Verde paramo, Belen village, Ubaque municipality, Cundinamarca, Colombia localized 4°29'36.61" N and 74° 1'35.27"E. .three experimental plots were established, with four treatments each one (dahlia, elderberry, dahlia x elderberry and native pasture) to 2958 masl, with a precipitation of 1778 mm/year, range of temperature of 10° C to 25° C and relative humidity between 84 % and 94 %, it was analyzed quantity and quality of forage through chemical – nutritional analysis at 90 and 120 days Production of green forage shows significant differences between treatments (P<0,05), being the highest value for pasture, likewise pasture shows the highest concentration of dry matter (DM) (P<0,05), and degradability of dry matter (DOM 48h) (P<0,05), additionally, pasture shows the highest values in neutral detergent fiber (NDF) (P<0,05), greater than those presented by dalia and sauco. On the other hand, dalia obtained Green fodder production of 6084 kg/ha and 8661 kg/ha at 90 y 120 days respectively. Also, shows the highest concentration in protein (P<0,05), greater than pasture and sauco, likewise, dalia shows the highest concentration of calculated metabolizable energy (ME) 2,1 Mcal/kg DM, nevertheless, shows the lowest concentration of DM. Also, dalia shows the highest concentration of minerals (ashes) (P<0,05) and respect to ashes shows the highest concentration of Ca, P and Mg (P<0,05). Dhalia is a native shrub that demonstrated good growth and nutritional content, thus it is a plant with high potential to develop high mountain sustainable production systems.