Abstract：
AIMS:To evaluate mannan oligosaccharide (MOS) and threonine effects on performance, small intestine morphology and Salmonella spp. counts in Salmonella Enteritidis-challenged birds. METHODS AND RESULTS:One-day-old chicks (1d) were distributed into five treatments: nonchallenged animals fed basal diet (RB-0), animals fed basal diet and infected with Salmonella Enteritidis (RB-I), animals fed high level of threonine and infected (HT-I), birds fed basal diet with MOS and infected (MOS-I), birds fed high level of threonine and MOS and infected (HT+MOS-I). Birds were inoculated at 2d with Salmonella Enteritidis, except RB-0 birds. Chicks fed higher dietary threonine and MOS showed performance similar to RB-0 and intestinal morphology recovery at 8 dpi. Salmonella counts and the number of Salmonella-positive animals were lower in HT+MOS-I compared with other challenged groups. CONCLUSION:Mannan oligosaccharides and threonine act synergistically, resulting in improved intestinal environment and recovery after Salmonella inoculation. SIGNIFICANCE AND IMPACT OF THE STUDY:Nutritional approaches may be useful to prevent Salmonella infection in the first week and putative carcass contamination at slaughter. This is the first report on the possible synergistic effect of mannan oligosaccharides and threonine, and further studies should be performed including performance, microbiota evaluation, composition of intestinal mucins and immune assessment.
journal_name
J Appl Microbioljournal_title
Journal of applied microbiologyauthors
Santos EG,Costa FG,Silva JH,Martins TD,Figueiredo-Lima DF,Macari M,Oliveira CJ,Givisiez PEdoi
10.1111/jam.12108subject
Has Abstractpub_date
2013-04-01 00:00:00pages
1158-65issue
4eissn
1364-5072issn
1365-2672journal_volume
114pub_type
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