Journal of Food, Agriculture and Environment

Effects of feeding galactomannan oligosaccharides on growth performance, serum antibody levels and intestinal microbiota in newly-weaned pigs

Author(s):

Ren-Lei Wang ^1,2, Z. P. Hou ^3*, Bin Wang ², Zhi-Qiang Liu ^3*, Andrew A. Fatufe ⁴

Recieved Date: 2010-07-19, Accepted Date: 2010-11-03

Abstract:

One hundred and twenty newly-weaned piglets (16-19 days old; 4 pigs per pen; 6 pens per treatment) were used to investigate the effect of feeding galactomannan oligosaccharides (GMOS; from sesbania gum, containing 20% galactose and 15% mannose) on growth performance, serum antibody levels and intestinal microbiota. Five dietary treatments were: basal diet (control), medicated diet (control + 110 ppm lincomycin), and three dietary inclusion levels of GMOS (control + 0.1%, 0.2% or 0.3%). The inclusion of either lincomycin or GMOS in the diet did not influence piglet performance (P>0.10), except for a better F/G (P=0.07, linearly) for the 14-28 day piglets fed the 0.2% GMOS compared with all other treatments. No difference (P>0.05) was observed for faecal consistency score among the dietary treatments during the experiment. On day 4 post-weaning, blood serum levels of IgA (70 vs. 87 mg·dL^-1 on control vs. 0.3% GMOS), IgG (285 vs. 401 mg·dl^-1 on control vs. 0.3% GMOS), and IgM (155 vs. 273 mg·dl^-1 on control vs. 0.3% GMOS) increased linearly (P<0.05) with dietary GMOS level. On day 14 post-weaning, serum IgA and IgM levels were not influenced by feeding GMOS (P>0.05). Polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) analysis indicated that medicated diet with 110 ppm lincomycin significantly reduced the diversity of ileal bacteria. Inclusion of GMOS at 0.3% appeared to alter the compositions of both ileal and colonic microbiota. These results suggest that dietary GMOS is a good alternative for dietary antibiotics for the first week post-weaning pigs.

Keywords:

Pigs, galactomannan oligosaccharides, gut mircoflora, immune response, polymerase chain reaction-denaturing gradient gel electrophoresis

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Journal: Journal of Food, Agriculture and Environment
Year: 2010
Volume: 8
Issue: 3&4
Category: Food and Health
Pages: 47-55

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