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Journal of Animal Science Abstract - Nonruminant Nutrition

Effects of spray-dried porcine plasma and plant extracts on intestinal morphology and on leukocyte cell subsets of weaned pigs1

 

This article in

  1. Vol. 84 No. 10, p. 2735-2742
     
    Received: Aug 01, 2005
    Accepted: July 03, 2005
    Published: December 8, 2014


    2 Corresponding author(s): miquel.nofrarias@cresa.uab.es
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doi:10.2527/jas.2005-414
  1. M. Nofrarías*2,
  2. E. G. Manzanilla,
  3. J. Pujols,
  4. X. Gibert,
  5. N. Majó*,
  6. J. Segalés* and
  7. J. Gasa
  1. Centre de Recerca en Sanitat Animal (CReSA)—Departament de Sanitat i d’Anatomia Animals, Universitat Autònoma de Barcelona, 08193, Bellaterra, Barcelona, Spain;
    Departament de Ciència Animal i dels Aliments, Universitat Autònoma de Barcelona, 08193, Bellaterra, Barcelona, Spain;
    CReSA—Institut de Recerca i Tecnologia Agroalimentaria (IRTA), 08007, Barcelona, Spain

Abstract

We evaluated the effects of a 6% spray-dried porcine plasma (SDPP) and a plant extracts mixture (XT; 5% carvacrol, 3% cinnamaldehyde, and 2% capsicum oleoresin) on the productive performance, intestinal morphology, and leukocyte cell subsets of early-weaned pigs compared with a control group. Morphometry of the jejunum, ileum, and colon, and immune cell analysis of blood, ileocolic lymph node (LN), and ileal Peyer’s patches were done in 24 weaned pigs (20 ± 2 d) at 19 or 21 d postweaning. Although SDPP and XT treatments did not increase ADG or ADFI, SDPP improved the G:F ratio (P = 0.024) compared with the control group. Dietary SDPP reduced the percentages of blood monocytes (P = 0.006) and macrophages in ileal Peyer’s patches and LN (P = 0.04), of B lymphocytes (P = 0.04) and γδ+ T cells in LN (P = 0.009), and of intraepithelial lymphocytes (P = 0.026) as well as the density of lamina propria cells in the colon (P < 0.01). Dietary XT reduced intraepithelial lymphocyte numbers in jejunum (P = 0.034) and the percentages of blood cytotoxic cells (P = 0.07) and B lymphocytes in LN (P = 0.03); however, XT increased blood monocytes (P = 0.038) and the density of lamina propria lymphocytes in the colon (P = 0.003). These results indicate that dietary SDPP and plant extracts can affect intestinal morphology and immune cell subsets of gut tissues and blood in weaned pigs. Furthermore, the effects of SDPP suggest lower activation of the immune system of the piglets.

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