Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8491245 | Animal Feed Science and Technology | 2016 | 25 Pages |
Abstract
The aim of this study was to assess the effects of purified, low-molecular-weight, polymannuronate on the performance, immune status, antioxidant capacity and the intestinal tract fermentation profile of weaned piglets. In a 28-d experiment, 180 crossbred Duroc Ã (Landrace Ã Yorkshire) piglets weighing 9.19 ± 1.47 kg and weaned at 35 days of age, were divided into 5 groups and fed corn-soybean meal based diets supplemented with 0, 3, 4, 5 or 6 g/kg polymannuronate (supplemented at the expense of corn). Each treatment was replicated 6 times with 6 pigs per replicate. Average daily gain (ADG), gain to feed (G:F) ratio as well as the serum IgM and hepatic glutathione linearly increased (P < 0.01) with increasing level of polymannuronate. Supplementation with increasing levels of dietary polymannuronate resulted in increased numbers of ileal and colonic lactic acid bacteria (linear effect, P < 0.01). The number of E. coli in ileum and colon was linearly decreased (P < 0.05) with increasing level of polymannuronate. At the end of the experiment, ileal and cecal lactic acid concentrations were significantly linearly increased (P < 0.01) with increasing level of polymannuronate. The concentration of butyric acid in the cecum, acetic acid and total VFA in colonic were also linearly increased (P < 0.05) with increasing polymannuronate inclusion levels. These results indicate that polymannuronate can improve immune status, antioxidant capacity and performance of weaned piglets.
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Authors
W.H. Zhu, D.F. Li, H. Wu, J.T. Li, Y.Q. Chen, H.S. Guan, L.Y. Zhang,