Caracterización bromatológica de pastos en seis municipios del Departamento de Norte de Santander; Colombia

Bromatological characterization of pastures in six municipalities of the Department of Norte de Santander; Colombia

Abstract

The bromatological analysis of pastures takes on great importance because these are the main source of food for livestock systems in Norte de Santander and in general in the country. The aim of this study was to carry out a bromatological characterization of pastures in six municipalities of Norte de Santander and thus know the productive potential of the department. Ten forage species with average ages between 29 and 47 days were evaluated to determine if there were differences in the nutritional composition of these forage species in the six municipalities of interest. Crude protein, ethereal extract, ash, lignin, cellulose, hemicellulose, FDN, FDA, macro and micronutrient content and energy assessment were evaluated. It was found that the forage species and the municipality where they develop, influence the vast majority of the nutritional quality parameters evaluated. Kikuyo grass presented the highest averages for PC (12.84 %) and ash (11.96 %), Maralfalfa grass presented the highest average values of energy (ENL = 1338.66 kcal / kg, ENM = 1434 kcal / kg and ENG = 713.66 kcal / kg) and in relation to the municipality, Pamplona presented the highest mean values of PC (12.84%) and ash (11.96%) and Chinácota presented the highest average values for energy (ENL = 1390.03 kcal/kg, ENM = 1495 kcal/kg and ENG = 774.38 kcal/kg). It was possible to recognize the values of nutritional quality, energy contents, macro and micronutrient contents associated with the predominant pastures in the 210 farms of the six municipalities of Norte de Santander, finding that the vast majority of bromatological variables of the pastures are influenced by the type of species and the area where they develop.