Campus Units
Animal Science
Document Type
Article
Publication Version
Published Version
Publication Date
10-2019
Journal or Book Title
Journal of Animal Science
Volume
97
Issue
10
First Page
4293
Last Page
4297
DOI
10.1093/jas/skz261
Abstract
The experimental objective was to evaluate the digestibility and fermentation differences between high and low energy corn samples and their response to xylanase supplementation. Four corn samples, 2 with higher DE content (HE-1 and HE-2; 3.74 and 3.75 Mcal DE/kg DM, respectively) and 2 with a lower DE content (LE-1 and LE-2; 3.63 and 3.56 Mcal DE/kg DM, respectively) were selected based upon a previous digestibility trial. Sixteen individually housed barrows (PIC 359 × C29; initial BW = 34.8 ± 0.23kg) were surgically fitted with an ileal T-cannula and randomly allotted to treatments in an 8 × 4 Youden square design. Dietary treatments were arranged in a 4 × 2 factorial: HE-1, HE-2, LE-1, and LE-2, with and without xylanase supplementation. Diets were formulated using one of the 4 corn samples, casein, vitamins, minerals, and 0.4% chromic oxide as an indigestible marker. Feed intake was established at approximately 3 times the estimated energy required for maintenance (NRC 2012) based upon the average initial BW of the pigs at the start of each collection period, which consisted of 9 d adaptation, 2 d of fecal, and 3 d of ileal collections. Diets, ileal, and fecal samples were analyzed for DM, GE, and total dietary fiber (TDF), to determine apparent total tract (ATTD), hindgut fermentation (HF), apparent ileal digestibility (AID) coefficients. A diet × enzyme interaction was not observed for any of the measured variables (P > 0.10). The HE-1 and HE-2 diets had greater ATTD of GE, and HE-2 diet had greater ATTD of DM (P < 0.001 and P = 0.007, respectively). Xylanase, independent of diet, improved the ATTD of GE and DM (84.8 vs. 83.6% for GE with and without enzyme, respectively, P = 0.008; and 84.2 and 83.0% with and without enzyme, respectively, P = 0.007). The energetic differences among these corn samples appeared to be driven by fermentability in the hindgut. Supplementing xylanase improves digestibility irrespective of the digestibility energy content of corn.
Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial 4.0 License
Copyright Owner
The Author(s)
Copyright Date
2019
Language
en
File Format
application/pdf
Recommended Citation
Petry, Amy L.; Masey O’Neill, Helen V.; and Patience, John F., "Xylanase, and the role of digestibility and hindgut fermentation in pigs on energetic differences among high and low energy corn samples" (2019). Animal Science Publications. 736.
https://lib.dr.iastate.edu/ans_pubs/736
Included in
Agriculture Commons, Animal Experimentation and Research Commons, Animal Sciences Commons, Microbial Physiology Commons
Comments
This article is published as Petry, Amy L., Helen V. Masey O’Neill, and John F. Patience. "Xylanase, and the role of digestibility and hindgut fermentation in pigs on energetic differences among high and low energy corn samples." Journal of animal science 97, no. 10 (2019): 4293-4297. doi: 10.1093/jas/skz261.