TY - JOUR AU - Apráez G., Edmundo AU - Gálvez C., Arturo Leonel AU - Navia E., Jorge Fernando PY - 2017/06/12 Y2 - 2024/03/28 TI - Nutritional assessment of trees and shrubs of a tropical (bms-t) very dry forest for cattle production JF - Revista de Ciencias Agrícolas JA - rcia VL - 34 IS - 1 SE - Research Article DO - 10.22267/rcia.173401.66 UR - https://revistas.udenar.edu.co/index.php/rfacia/article/view/3424 SP - 98-107 AB - <p>We determined the nutritional quality of the tree species: <em>Pithecellobium lanceolatum</em> Mart., <em>Guazuma ulmifolia</em> Lam., <em>Cassia fistula</em> L., <em>Pithecellobium dulce</em> Mart., and <em>Samanea saman</em> Jacq. in a Tropical very dry forest in Patía Valley, as well as their effect as a supplement in the nutrition of Cebu cattle. Six treatments were assessed: T0 (100% grazing); T1 (90% grazing+10% <em>P.lanceolatum</em>); T2 (90% grazing+10% <em>P.dulce</em>); T3 (90% <em>grazing</em>+10% <em>S.saman</em>); T4 (90% grazing+10% <em>C. fistula</em>), and T5 (90% grazing+10% <em>G</em>. <em>ulmifolia</em>), distributed in a Randomized Complete Block design. The phenology, nutritional content, and secondary metabolites of the trees were assessed. The highest contents of dry matter (47.1%), crude protein (23.5%), neutral detergent fiber (58%), and net energy (523 Kcal/100 g) were found for <em>S. saman</em>. FDA was greatest (p&lt;0.05) in <em>P. lanceolatum</em> and <em>G. ulmifolia</em> with 39.5%.  <em>C. fistula</em> and <em>S. saman</em> showed the lowest secondary metabolites levels. Saponins were detected in <em>P. lanceolatum</em>, <em>P. dulce, P. lanceolatum</em>, and <em>G</em>. <em>ulmifolia</em>. These species also showed low steroid content levels and none of these contained alkaloides. <em>C. fistula</em> and <em>G. ulmifolia</em> intake was low, at just 10g/day, while the other species were consumed at 100g/day. The greatest weight gain was obtained with <em>S. saman</em> (560g/day), while weight loss was observed with C. fistula (-20g/day). The highest weights during the rainy season were: C. fistula (1.7kg), <em>S. saman</em> and <em>G.ulmifolia</em> (1.36kg), <em>P</em>. <em>lanceolatum</em> (0.9kg), and <em>P. dulce</em> (0.36kg).<strong></strong></p> ER -