Campus Units
Animal Science
Document Type
Article
Publication Version
Published Version
Publication Date
4-1-2017
Journal or Book Title
Journal of Animal Science and Biotechnology
Volume
8
First Page
32
DOI
10.1186/s40104-017-0161-9
Abstract
Background: Indigestible markers are commonly utilized in digestion studies, but the complete disappearance or maximum appearance of a marker in feces can be affected by diet composition, feed intake, or an animal’s BW. The objectives of this study were to determine the impact of previous (Phase 1, P1) and current- (Phase 2, P2) diet composition on marker disappearance (Cr) and appearance (Ti) in pigs fed 3 diets differing in NDF content.
Results: When pigs were maintained on the 25.1, 72.5, and 125.0 g/kg NDF diets, it took 5.1, 4.1, and 2.5 d, respectively, for Cr levels to decrease below the limit of quantitation; or 4.6, 3.7, or 2.8 d, respectively, for Ti to be maximized. These effects were not, however, independent of the previous diet as indicated by the interaction between P1 and P2 diets on fecal marker concentrations (P < 0.01). When dietary NDF increased from P1 to P2, it took less time for fecal Cr to decrease or fecal Ti to be maximized (an average of 2.5 d), than if NDF decreased from P1 to P2 where it took longer for fecal Cr to decrease or fecal Ti to be maximized (an average of 3.4 d).
Conclusions: Because of the wide range in excretion times reported in the literature and improved laboratory methods for elemental detection, the data suggests that caution must be taken in considering dietary fiber concentrations of the past and currently fed diets so that no previous dietary marker addition remains in the digestive tract or feces such that a small amount of maker is present to confound subsequent experimental results, and that marker concentration have stabilized when these samples are collected.
Rights
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.
Copyright Owner
The Author(s)
Copyright Date
2017
Language
en
File Format
application/pdf
Recommended Citation
Jacobs, Brandy M.; Patience, John F.; Lindemann, Merlin D.; Stalder, Kenneth J.; and Kerr, Brian J., "Disappearance and appearance of an indigestible marker in feces from growing pigs as affected by previous- and current-diet composition" (2017). Animal Science Publications. 726.
https://lib.dr.iastate.edu/ans_pubs/726
Included in
Agriculture Commons, Animal Experimentation and Research Commons, Animal Sciences Commons
Comments
This article is published as Jacobs, B.M., Patience, J.F., Lindemann, M.D. et al. Disappearance and appearance of an indigestible marker in feces from growing pigs as affected by previous- and current-diet composition. J Animal Sci Biotechnol 8, 32 (2017). doi:10.1186/s40104-017-0161-9.