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|Título: ||Microbial activity in the gut of piglets: effect of fibre source and enzyme supplementation|
|Autor: ||Lordelo, M.M.|
|Issue Date: ||2007|
|Citação: ||" Livestock Science". ISSN 1871-1413. 108 (2007) 262-265|
|Resumo: ||Twenty four Duroc×Landrace male piglets, aged 21 days, were assigned to 1 of 4 experimental diets. Diets 1 and 2 contained
150 g kg−1 wheat bran and diets 3 and 4 contained 90 g kg−1 maize cobs as the major fibre source. All diets contained 480 g kg−1
wheat and 200 g kg−1 soybean meal. Diets 2 and 4 were supplemented with the following enzyme complex: 800 U/kg cellulase,
1800 U/kg glucanase and 2600 U/kg xylanase.
The replacement of wheat bran by maize cobs increased the acetic (Pb0.05) and decreased the butyric acid production
(Pb0.05) in the cecum. Piglets fed diets with maize cobs had lower (Pb0.05) levels of butyric acid in the colon than those fed
The xylanolytic, pectinolytic and cellulolytic enzyme activities were higher (Pb0.05) in the cecum and colon of piglets fed the
wheat bran based diets. The supplementation of the diet with the enzyme complex did not significantly affect the levels of short
chain fatty acids formed in the small intestine and there was a non significant increase of the levels of acetic, propionic and butyric
acids in the cecum and colon of piglets (Pb0.10). No interactions were present between fibre sources and enzyme addition.
The results suggest that the enzyme supplementation of the diet did not bring significant benefits to the animals and that when
maize cobs replaces wheat bran in diets it negatively affects butyric acid production and fibre-degrading enzyme activity in the
hindgut of piglets.
© 2007 Elsevier B.V. All rights reserved.|
|Appears in Collections:||DPAA - Artigos de Revistas|
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