Nutrition quality of shrub species Malvaviscus arboreus, Codariocalyx gyroides and Cratilia argentea in the hillside area of the Departaments of Cauca and Valle, Colombia | Calidad nutritiva de las arbustivas forrajeras Malvaviscus arboreus, Codariocalyx gyroides y Cratilia argentea en la zona de ladera de los departamentos de Cauca y Valle, Colombia

Spanish; Castilian. bSumarios (en, es)Despues de evaluar la adaptacion de 25 especies arbustivas en fincas ubicadas en zonas de ladera del tropico medio de los departamentos de Cauca y Valle del Cauca, se realizo el estudio de consumo y caracterizacion bromatologica de las tres especies con mayor potencialidad en sistemas productivos mixtos (ganaderia doble proposito-agricultura): Malvaviscus arboreus, Cratylia argentea y Codariocalyx gyroides. La evaluacion de calidad y consumo se realizo en ovejos africanos utilizando jaulas metabolicas que, para facilitar el manejo, fueron ubicadas en instalaciones del Centro de investigaciones de CoRPoiCa en Palmira, 3ø 31i N, 76ø 19i W; 1.000 m.s.n.m.; 1.014 mm/año de precipitacion, 24ø C, brillo solar 5.8 h/d, humedad relativa 75. Se ofrecio una racion basica de heno de Brachiaria dictyoneura de baja calidad nutritiva, 3.6 de proteina cruda, equivalente a 100 g M.S./kg0.75, junto con 80 g M.S./kg0.75 de follaje de cada una de las tres leguminosas fraccionadas en dos ofertas durante siete dias de medicion y previo acostumbramiento. De acuerdo con el indice predictivo de valor relativo (RFV = 88.9 - (0.119 * FDa) (120 / FDa) / 1.29), segun Mertens (1993), la leguminosa arbustiva Malvaviscus arboreus reporto el consumo mas alto, 94.53 g MS/kg0.75; seguido de Cratylia argentea, 83 g MS/kg0.75,; por ultimo, Codariocalyx gyroides, 81.82 g MS/kg0.75. DiVMS y DTCia correlacionaron positivamente en forma significativa mientras que FDN, FDNe, FDa correlacionaron negativamente con los valores encontrados para consumo.a study was conducted in order to evaluate the nutritional composition and intake of the shrub species Malvaviscus arboreus, Cratylia argentea and Codariocalyx gyroides, growing under hillside conditions in the Cauca and Cauca Valley regions of Colombia. in a previous evaluation of the nutritional quality of 25 shrub species, these three species showed the highest forage potential in mixed productive systems. The present evaluation was carried out using african sheep housed in metabolic chambers and was conducted at the Palmira Corpoica Research Center, located at 3ø 31i N, 76ø 19i W, 1.000 masl with 1014 mm of precipitation/year, 24ø C, 5.8 h/d solar bright and 75percentage of relative humidity. For seven days, after diet animal adaptation to the diet, animal received a basal diet of a low nutritive quality (3.6percentage of raw protein) Brachiaria dictyoneura hay, at an equivalent of 100 g DM/ kg0.75 per day. additionally, animals received 80 g DM/ kg0.75 per day of one of the three legumes divided in daily portions. according to the relative feeding value predictive index (RFV=88.9 - (0.119*percentageFDa)(120/percentageFDa)/1.29, Mertens, 1993), the shrub legume M. arboreus showed the highest intake index, (94.53) followed by Cratylia argentea (83) and Codariocalyx gyroides (81.82) g DM/kg0.75. iVDMD and DTCia had a significant positive correlation, while NDF, eNDF and aDF correlated negatively with the observed intake values