| CPC A61K 31/702 (2013.01) [A23K 20/163 (2016.05); A23K 50/30 (2016.05); A23K 50/75 (2016.05)] | 9 Claims |
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1. A method of modulating the growth of at least one bacterial species in the gastrointestinal tract of a bird, said method comprising: administering a nutritional composition comprising a base nutritional composition and a synthetic oligosaccharide preparation to a bird, wherein said synthetic oligosaccharide preparation comprises at least n fractions of oligosaccharides each having a distinct degree of polymerization selected from 1 to n (DP1 to DPn fractions), wherein n is an integer greater than 3; and wherein each of a DP1 and DP2 fraction independently comprises from about 0.5% to about 15% of anhydro-subunit containing oligosaccharides by relative abundance as determined by mass spectrometry, wherein a level of at least one bacterial species in a gastrointestinal sample from said bird is increased or decreased relative to a level of said at least one bacterial species in a gastrointestinal sample from said bird prior to said administering said nutritional composition to said bird, and wherein said at least one bacterial species is selected from the group consisting of Odoribacter splanchnicus, Bacteroides dorei, Barnesiella intestinthominis, Bacillus clarus, Butyricimonas faecalis, Oscillibacter spp., Campylobacter jejuni, Helicobacter pullorum, Campylobacter coli, and Escherichia coli.
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