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Arquivo Brasileiro de Medicina Veterinária e Zootecnia

Print version ISSN 0102-0935

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.

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