Abstract

SALIBA, E.O.S. et al. Prediction of sorghum chemical composition by near infrared spectroscopy technique. Arq. Bras. Med. Vet. Zootec. [online]. 2003, vol.55, n.3, pp. 357-360. ISSN 0102-0935.  http://dx.doi.org/10.1590/S0102-09352003000300017.

The study aimed to evaluate the near infrared spectroscopy (NIRS) technique potential for predicting the chemical composition of sorghum. One hundred thirty two samples of four sorghum hybrids: AG212 (tall size), AG2002 (tall size), AG 2005 (dual purpose) and AG213 (tall size) were used in the analyses. The chemical composition was evaluated for the following fractions: dry matter (DM), crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), in vitro dry matter digestibility (IVDMD) and carboydrates (CHO). The coefficients of determination (R²) for the fractions DM, CP, NDF, ADF, IVDMD and CHO were: 95.8, 99.5, 96.4, 98.1, 93.1 and 98.7%, respectively. Low sec-error and high coefficient of determination were observed for the absorbance treatment.

Keywords : sorghum; chemical composition; near infrared spectroscopy; vitro digestibility.