Microarchitecture and spatial relationship between bacteria and ileal, cecal, and colonic epithelium in chicks fed a direct-fed microbial, PrimaLac, and salinomycin

Direct-fed microbials (DFM) could serve as a potential alternative to the feeding of antibiotics in poultry production. In this study, the effects of providing a DFM were compared with the feeding of salinomycin on intestinal histomorphometrics, and microarchitecture was examined. Broiler chicks (n=...

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Bibliographic Details
Published in:Poultry science 2007-06, Vol.86 (6), p.1121-1132
Main Authors: Chichlowski, M, Croom, W.J, Edens, F.W, McBride, B.W, Qiu, R, Chiang, C.C, Daniel, L.R, Havenstein, G.B, Koci, M.D
Format: Article
Language:English
Subjects:
Animal Feed - analysis
Animal Nutritional Physiological Phenomena
Animals
broiler chickens
broiler feeding
cecum
Chickens - metabolism
chicks
colon
Diet - veterinary
Dietary Supplements
direct-fed microbials
disease prevention
enterocytes
Gastrointestinal Tract - drug effects
Gastrointestinal Tract - microbiology
Gastrointestinal Tract - ultrastructure
height
histology
histomorphometrics
ileum
intestinal microorganisms
intestinal mucosa
Intestinal Mucosa - drug effects
Intestinal Mucosa - microbiology
jejunum
Lactobacillus - metabolism
microstructure
morphometry
population density
probiotics
Pyrans - pharmacology
salinomycin
smooth muscle
thickness
villi
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Summary:Direct-fed microbials (DFM) could serve as a potential alternative to the feeding of antibiotics in poultry production. In this study, the effects of providing a DFM were compared with the feeding of salinomycin on intestinal histomorphometrics, and microarchitecture was examined. Broiler chicks (n=18 per treatment; trials 1 and 2) were fed a standard starter diet (control), control+PrimaLac (DFM; 0.3% wt/wt), and control+salinomycin (SAL; 50 ppm) from hatch to 21d. The birds were euthanized on d 21, and the ileal, jejunal, cecal, and colon tissues were dissected. Samples were examined by light microscopy (jejunum and ileum; trial 1) and scanning electron microscopy (ileum, cecum, and colon; trial 2). Feeding of the DFM increased intestinal muscle thickness (P
ISSN:0032-5791
1525-3171
DOI:10.1093/ps/86.6.1121