Effect of Storage Time on the Nutritional Value of Sugarcane Genotypes Treated with Calcium Oxide
2025
Claudio de O. Romão | Gleidson G. P. de Carvalho | Manuela S. L. Tosto | Stefanie A. Santos | Aureliano J. V. Pires | Camila M. A. Maranhão | Luana M. A. Rufino | George S. Correia | Henry D. R. Alba
The objective of this study was to evaluate the nutritive value of three sugarcane genotypes treated with 1.5% CaO and stored for three different periods. A split-plot design was used for the experiment. The treatments consisted of a 3 × 3 factorial design, involving three genotypes (IAC-862480, SP-791011, and CTC-3) and three storage periods (24, 48, and 72 h). No significant effect of genotype (<i>p</i> > 0.05) was observed on ether extract (EE), hemicellulose, or total carbohydrate contents. However, significant genotype effects (<i>p</i> < 0.05) were noted for dry matter (DM), crude protein (CP), acid detergent fiber (ADF), cellulose, lignin, non-fibrous carbohydrates (NFC), and total digestible nutrients (TDN) contents. Furthermore, significant genotype effects (<i>p</i> < 0.05) were observed for in vitro DM digestibility (IVDMD), as well as the A + B1, B2, and C carbohydrate fractions. No significant effect of storage time (<i>p</i> > 0.05) was found on DM, organic matter, CP, EE, lignin, IVDMD, or C fraction contents. In contrast, storage time had a significant effect (<i>p</i> < 0.05) on ADF, hemicellulose, cellulose, NFC, total carbohydrates, TDN, A + B1, and B2 contents. Calcium oxide was effective in preserving the nutritional characteristics of sugarcane for up to 72 h of storage. The genotypes SP-791011 and IAC-862480 exhibited higher nutritional value. Further experiments are needed to determine the safe amount of this feed component that can be ingested by ruminants.
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