Degradabilidade ruminal “in situ” de coprodutos da indústria de fecularia e da castanha do Pará

Abstract

The present study aims to evaluate the "in situ" Degradability of different products that can be used as alternatives for animal nutrition. Among the main ones, the cassava husk, cassava flour and the Brazil nut stand out. The main objective is to reduce costs in animal feed, through the alternative use of these products that would possibly be discarded without any productive use. The TNT bags were introduced directly into the animals through the ruminal cannula, in 20x20 cm size nylon mesh bags tied with a 1.5 m nylon cord, in descending order of periods of incubation of 96, 48, 24, 6, 3 and 0 hours. Three Jersey animals were used to carry out the study and all of them had a ruminal cannula. Each animal had its nylon mesh bag containing three TNT bags with the food proposed in the experiment, and nine in total in each incubation period. The dry parameters of the kinetic matter of dry matter and neutral detergent fiber of cassava, cassava flour and Brazil nuts were found, evaluating their degradability according to the periods in which the food had no rumen of the animal. Cassava hull showed higher degradability values in relation to dry matter as neutral detergent fiber according to the proposed incubation periods, thus being more suitable for use in ruminant feeding.