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- Title
Diferentes procedimentos na determinação de indicadores internos para estimativa de produção fecal e fluxo duodenal de matéria seca em bovinos.
- Authors
da Silva Morais, Jucileia Aparecida; Berchielli, Telma Teresinha; de Oliveira, Simone Gisele; Queiroz, Maria Fernanda Soares; Toro-Velásquez, Paula Andrea; Rivera-Rivera, Astrid
- Abstract
Times of in situ incubation (144 and 288h) for determination of internal markers IADF and INDF and the effects of differents procedures (wash or not the nylon bag every 72h incubation) was evaluated in samples of diet, duodenal digesta and cattle feces. The duodenal flow dry matter and fecal production utilizing the internal markers to compare with the external marker chromium oxide there was estimated. The animals were fed with sorgum silage, concentrate or urea. In this experiment, a latin square design was used, in a factorial scheme (two times of incubation × two processing nylon bag). No was observed effect of the incubation time or processing in the internal markers INDF and IADF concentration and the in situ incubation after 144h is adequate to reproduce the indigestible markers fraction in samples. For fecal production estimation, the external marker chromium oxide presented similar result (1.26 kg day-1) as the total fecal collection (1.49 kg day-1). Both the internal markers overestimate the duodenal flow dry matter when compared with the external marker chromium oxide.
- Subjects
CATTLE pathogens; FECAL contamination; FOOD contamination; CHROMIUM in the body; ANIMAL diseases; ANIMAL science; PHYSIOLOGY; EFFECT of pollution on animals; FECES; MICROBIOLOGY
- Publication
Acta Scientiarum: Animal Sciences, 2010, Vol 32, Issue 2, p213
- ISSN
1806-2636
- Publication type
Article
- DOI
10.4025/actascianimsci.v32i2.8448