| Effects of lactose and yeast-dried milk on growth performance, fecal microbiota, and immune parameters of nursery pigs. | |
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MedLine Citation:
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PMID: 22266995 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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An experiment was conducted to evaluate the effects of dietary lactose alone or in combination with a yeast-dried milk product (50% dried near-dated milk; 50% dried yeast) on growth performance, fecal microbiota, and immune status in nursery pigs. A total of 108 pigs (age, 20 ± 1 d; initial BW, 6.07 ± 0.03 kg) were randomly allotted to 18 pens (6 pigs/pen; 6 pens/treatment). Dietary treatments were: 1) control, 2) control + lactose, and 3) control + lactose + 5% yeast-dried milk. Except for the control diet, diets in Phase 1 (wk 1 and 2), 2 (wk 3 and 4), and 3 (wk 5) contained 20, 15, and 5% total lactose, respectively. Blood samples were collected from all pigs at d 0, 14, 28, and 35 to determine circulating IgG, IgA, and tumor necrosis factor (TNF)-α concentrations. At d 0, 7, and 14, fecal samples were collected (n = 18; 6 pigs/treatment) to evaluate fecal microbiota using PCR-denaturing gradient gel electrophoresis. Compared to pigs fed the control diet, pigs fed lactose and lactose with yeast-dried milk had greater (P < 0.05) ADG and tended (P = 0.07) to have greater BW and ADFI during Phase 1. There were no differences for BW, ADG, or ADFI during Phase 2, 3, or the overall experimental period. A main effect of treatment was observed for circulating IgA where control pigs had greater (P < 0.01) IgA compared to pigs fed lactose with or without yeast-dried milk; however, no effects of treatment were observed for circulating IgG or TNF-α. No differences in microbial diversity indices were observed on d 7 or 14 among treatments. However, a shift in microbial composition was observed on d 7 with lactose-fed pigs having greater (P < 0.05) putative L. johnsonii staining intensity compared to control pigs and pigs fed lactose plus yeast-dried milk. On d 14, L. reuteri tended (P = 0.15) to be enhanced, and L. delbrueckii was eliminated (P < 0.04) by feeding lactose with or without yeast-dried milk. This research indicates that growth performance, immune status, and fecal microbiota are affected by dietary inclusion of lactose alone, or in combination with yeast-dried milk. |
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Authors:
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H Tran; R Moreno; E E Hinkle; J W Bundy; J Walter; T E Burkey; P S Miller |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-1-20 |
Journal Detail:
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Title: Journal of animal science Volume: - ISSN: 1525-3163 ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-1-23 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8003002 Medline TA: J Anim Sci Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Animal Science, University of Nebraska, Lincoln 68583. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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