Bromatological characteristics and in vitro digestibility of four sugarcane varieties subjected or not to the application of quicklime

the experiment was conducted to evaluate the bromatological characteristics and the in vitro digestibility of four sugarcane varieties, subjected or not to hydrolysis, with quicklime. a completely randomized design was employed with three replications arranged in a 4 × 2 factorial scheme, with four sugarcane varieties (sp 52454, rb 867515, rb 855536 and iac 862480), hydrolyzed or not. there was significant effect on brix (p < 0.05) and industrial fiber (p < 0.05), and iac 862480 variety had the lowest levels of industrial fiber. there were no significant difference (p > 0.05) in neutral detergent fiber, acid detergent fiber and lignin levels among the sugarcane varieties under analysis and for the sugarcanes, hydrolyzed or not. the use of sugarcane hydrolysis with 1% quicklime improves the in vitro digestibility of ndf and adf, regardless of the variety studied. hydrolysis with 1% quicklime did not alter the sugarcane chemical composition.