Effects of quinoa hull meal on piglet performance and intestinal epithelial physiology

Dorthe Carlson, J.A. Fernandez, H.D. Poulsen, B. Nielsen, Sven-Erik Jacobsen

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    Abstract

    Saponin-containing feed additives have shown positive effects on pig
    performance. Quinoa hull has high saponin content and may be of
    interest as a feed additive. This study aimed to evaluate quinoa hull
    meal (QHM) as a feed additive in a pig diet. The effects of QHM were
    assessed for three dosages of South American (SA) origin (100, 300 and
    500 mg/kg) and one dosage of Danish (DK) quinoa (300 mg/kg). In
    addition, the effect of dietary SA-QHM and SA-QHM-extract on jejunal
    epithelial physiology was studied ex vivo in Ussing chambers. The experiment
    included 400 piglets weaned at 28 ± 2 days of age and the experimental
    period was 4 weeks. Piglets were weighed initially and finally
    and feed intake registered. The ex vivo studies were performed with epithelium
    from 40 pigs receiving control or SA-QHM. Epithelium from
    each pig was placed into eight Ussing chambers, where four concentrations
    of SA-QHM-extract were added. Epithelial permeability,
    Na+-dependent glucose transport and serotonin (5-HT) and theophylline-
    induced secretion were measured. The results showed that QHM
    had no influence on piglet’s growth (p = 0.41) or feed intake (p = 0.17).
    In spite of a large difference in saponin content between SA-QHM and
    DK-QHM (28.7% and 2.0% w/w respectively) the source did not affect
    pig performance. The ex vivo studies revealed no effect (p > 0.05) of
    adding QHM-extract into the medium. The permeability and glucose
    induced absorption were highest (p = 0.003 and p = 0.04 respectively)
    in epithelium from pigs that consumed 100 or 300 mg/kg SA-QHM. The
    secretory response to 5-HT was not affected (p = 0.59) by dietary treatments,
    but the theophylline-induced secretion decreased (p = 0.02) with
    increasing dietary SA-QHM. The changes in epithelial physiology mea
    Original languageEnglish
    JournalJournal of Animal Physiology and Animal Nutrition
    Volume96
    Issue number2
    Pages (from-to)198-205
    Number of pages8
    ISSN0931-2439
    DOIs
    Publication statusPublished - 2012

    Keywords

    • Former LIFE faculty
    • Chenopodium quinoa,
    • glucose,
    • pig,
    • serotonin

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