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Chemical composition of the foliage meal of Tithonia diversifolia
Authors: Carlos Olmo-González ; Danis Manuel Verdecia-Acosta ; Luis Guillermo Hernández-Montiel ; Alcibiades Ojeda-Rodríguez ; Jorge Luis Ramírez-de la Ribera ; Yordan Martínez-Aguilar

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With the objective of determining the nutritional constituents, amino acids and the content of secondary metabolites of the foliage meal of Tithonia diversifolia. For this, plant material was collected 70 days after regrowth. The
percentages of DM, CP, P, Ca, Si, CF, NDF, ADF, ADL, Cel, Hcel, CC were determined; amino acid profile (methionine,
cystine, methionine + cystine, lysine, threonine, aspartic acid, glutamic acid, proline, glycine, alanine, valine, isoleucine, leucine, serine, phenylalanine, arginine, histidine), and content of TT, TP, TCT, TBCT, FCT, Flv, Sap, Alk, Trit and
TS. For statistical processing, descriptive techniques (mean and standard deviation) were used. The plant material
of Tithonia diversifolia analyzed showed percentages of 22.23, 2.62, 0.013, 45.7, and 29.8% and 6.09 MJ/kg (CP, Ca,
P, NDF, ADF and ME). For the secondary metabolites, they presented concentrations of 5.35, 12.38, 13.7, 9.58, 4.15,
24.49, 0.86, 1.36, 7.71 and 10.75 g/kg MS for total tannins, total phenols, total condensed tannins, total bound condensed tannins, free condensed tannins, flavonoids, alkaloids, saponins, triterpenes and total steroids). The highest
concentrations of amino acids were for lysine, aspartic acid, glutamic acid, proline, glycine, alanine, valine, leucine,
serine and phenylalanine with values of 13-30 g/kg of protein. It is concluded that the foliage meal of Tithonia diversifolia presents an adequate relation in its quality.