Técnicas para estimativa de consumo, digestibilidade e produção fecal com diferentes dietas para bovinos

Abstract

The objective of this study was to evaluate the internal indicators, MSi and NDFi in 264 hours of incubation in situ, MSi and NDFi at 72 and 144 hours of incubation in vitro, and external indicators LIPE® and TiO2 with the total collection in determining the digestibility, intake and fecal output of crossbred Holstein x Gir heifers on three different diets, corn silage + concentrate (corn and soybeans), sugarcane + concentrate and hay Tifton + concentrate. The experimental design was a 3 x 3 Latin square and simultaneous triple. The results show that only the MSi and NDFi incubated in vitro for 72 hours did not cause statistically similar results to the total collection. Other indicators are able to promote statistically similar estimates the total collection to assess the intake, digestibility and fecal output.