QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Full Text (PDF) Purchase Article View Shopping Cart Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Yasuda, K. Articles by Lei, X. G. Search for Related Content PubMed Articles by Yasuda, K. Articles by Lei, X. G.

---

Nutrient Requirements and Optimal Nutrition

Supplemental Dietary Inulin Affects the Bioavailability of Iron in Corn and Soybean Meal to Young Pigs¹

Departments of ² Animal Science and ³ Food Science and ⁴ USDA-ARS, U.S. Plant, Soil, and Nutrition Laboratory, Cornell University, Ithaca, NY 14853

^* To whom correspondence should be addressed. E-mail: xl20{at}cornell.edu.

Iron deficiency represents one of the most common global nutritional disorders in humans. Our objective was to determine whether and how supplemental inulin improved utilization of iron intrinsically present in a corn and soybean meal diet by young pigs for hemoglobin repletion. In Expt. 1, 3 groups (n = 8/group) of pigs were fed a corn and soybean meal–based diet (BD, without inorganic iron addition) or BD + 2 or 4% inulin (Synergy 1: a mixture of oligofructose and long-chain inulin HP, Orafti) for 5 wk. Final blood hemoglobin concentrations and the overall hemoglobin repletion efficiency of pigs were positively (r = 0.55 and 0.69, P < 0.01) correlated with dietary inulin concentrations. Compared with pigs fed the BD, those fed 4% inulin demonstrated a 28% improvement (P < 0.01) in hemoglobin repletion efficiency and 15% (P < 0.01) improvement in the final blood hemoglobin concentration. In Expt. 2, 12 weanling pigs (n = 6/group) were fed the BD or the BD + 4% inulin for 6 wk. Pigs fed 4% inulin had higher (P < 0.05) soluble Fe concentrations in the digesta of the proximal, mid, and distal colon, and lower (P < 0.05) sulfide concentrations in the digesta of the distal colon. Supplemental inulin had virtually no effect on pH or phytase activity of digesta from any of the tested segments. In conclusion, supplementing 4% inulin improved utilization of intrinsic iron in the corn and soybean meal diet by young pigs, and this benefit was associated with soluble Fe and sulfide concentrations but not pH or phytase activity in the digesta.

This article has been cited by other articles:

				K. Yasuda, H. D. Dawson, E. V. Wasmuth, C. A. Roneker, C. Chen, J. F. Urban, R. M. Welch, D. D. Miller, and X. G. Lei Supplemental Dietary Inulin Influences Expression of Iron and Inflammation Related Genes in Young Pigs J. Nutr., November 1, 2009; 139(11): 2018 - 2023. [Abstract] [Full Text] [PDF]

				E. Tako, J. M. Laparra, R. P. Glahn, R. M. Welch, X. G. Lei, S. Beebe, and D. D. Miller Biofortified Black Beans in a Maize and Bean Diet Provide More Bioavailable Iron to Piglets Than Standard Black Beans J. Nutr., February 1, 2009; 139(2): 305 - 309. [Abstract] [Full Text] [PDF]

				J. K. Patterson, X. G. Lei, and D. D. Miller The Pig as an Experimental Model for Elucidating the Mechanisms Governing Dietary Influence on Mineral Absorption Experimental Biology and Medicine, June 1, 2008; 233(6): 651 - 664. [Abstract] [Full Text] [PDF]

				K. Yasuda, R. Maiorano, R. M. Welch, D. D. Miller, and X. G. Lei Cecum Is the Major Degradation Site of Ingested Inulin in Young Pigs J. Nutr., November 1, 2007; 137(11): 2399 - 2404. [Abstract] [Full Text] [PDF]