Determinação de alimentos volumosos em detergente ácido em autoclave e digestor de fibras

Abstract

Fiber is one of the compounds present in fodder plants and has great importance in feeding herbivores and the determination of quality and quantity of fiber of food can be done by various analytical methods. The objective of this study was to evaluate the determination of acid detergent fiber (FAD) in three different roughage foods: Tifton 85 Grass, Urochloa brizantha cv. Xaraés (Xaraés Grass) and Urochloa brizantha cv. Marandu (Marandu Grass), using an autoclave and the fiber digester (TECNAL®, model TL-149) and the technique of non-woven fabric filter bags (TNT) weighing 100g / m². The experimental design was completely randomized, in a 3 x 2 factorial scheme with three roughage foods and two methods (autoclave and fiber digester), with five replicates each. The analyzes obtained with the autoclave provide values higher than the fiber digester equipment. The different equipment (autoclave and fiber digester) used in determining the FDA content of roughage foods provided different results.