Browsing by Author "Camargo Arango, Juan David"
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Item Estudio químico entre la relación de la calidad nutricional y la excreción de nutrientes en novillos Angus bajo pastoreo de sistemas de monocultivo y silvopastoril(Universidad Santiago de Cali, 2023) Camargo Arango, Juan David; Mera Loboa, William David; Ríos Acevedo, Jhon Jairo (Director); Arango Mejía, Jacobo (Director)Forages are the main and most economical source of feed for cattle. The integration of grasses with shrub species allows to increase the consumption of forage with higher nutritional quality. This study was carried out in the Animal Nutrition and Forage Quality Laboratory of the Bioversity & CIAT Alliance, located at Km 17 of the Cali-Palmira straight line. The objective of this work was to relate the nutritional quality of the diets and the excretion of nutrients in 14 Angus steers that grazed a monoculture system based on Cayman (Urochloa hybrid cv. CIAT BRO2/1752) and a silvopastoral system (SSP) made up of Cayman plus Leucaena diversifolia. In which the forages underwent a characterization in their chemical composition, in which the content of Crude Protein PC (6.04 - 13.1%), dry matter DM (93.47 - 92.6%), MO organic matter (87.54 - 88.0%), ashes (12.46 - 12.0%), NDF neutral detergent fiber (69.63 - 68.9%), FDA acid detergent fiber (37, 61 - 36.1 %) and in vitro digestibility of dry matter DIVMS (52.06 - 64.01 %). In the case of feces, contents of PC (7.69 - 11.04%), OM (78.66 - 76.68%), ashes (19.79 - 21.75%), NDF were obtained. (71.30 - 70.34 %) and FDA (36.58 - 39.98 %), on the other hand, in the digestibility of the nutrients values of DM (43.36 - 53.22 %), MO (45.73 – 47.22%), PC (59.50 – 45.63%), NDF (51.04 – 55.08%), FDA (46.67 – 56.61%), for monoculture and SSP respectively, which were analyzed in triplicate. Finally, the consumption of forages in the animals was estimated from the difference obtained between was offered and rejected 24 hours after supply.