Composition bromatologic-chemical and in vitro dry matter digestibility of sugarcane hydrolyzed with whitewash

Abstract

The objective of this study was to evaluate whitewash as a hydrolyzing agent having as parameter the chemical-bromatologic composition of in natura sugarcane and in vitro dry matter digestibility. The research was conducted in Department of Animal Science at University José of Rosário Vellano (UNIFENAS), in Alfenas (MG). The experimental design was a completely randomized in factorial scheme 4x4, utilizing three doses of whitewash (0.5; 1.0 and 2.0%) and absence of whitewash, and four times o exposition of the masses to oxygen (0; 3; 6 and 12h) with four replicates. The content of dry matter and minerals and still the pH values increased linearly to the addition of whitewash, while temperature presented quadratic behavior. The treatment with whitewash did not influence the contents of neutral detergent insoluble fiber, acid detergent insoluble fiber and lignin. The lowest contents of neutral detergent insoluble fiber and lignin were found at the moment of the mixture between sugar cane and whitewash (time 0 hour). The addition of whitewash was not changed the coefficients of IVDMD. In general, there were no benefits on the chemical-bromatologic composition of sugar cane to the addition of whitewash. Consequently, not recommended practice of adding of whitewash in the sugar cane for animal feeding.