In summary, the current study demonstrates that an extracted, purified β-glucan source may be successfully supplemented to a wheat-based pig diet without the implications of depressed Coefficient of total tract apparent digestibility, as typically observed with consumption of a barley-based diet. Furthermore, offering a purified source of β-glucans resulted in beneficial reductions in odorous volatile fatty acids in the distal gastrointestinal tract and in excreted manure, and may reflect improvements in Nitrogen digestibility. This modification of the composition of the distal gastrointestinal tract and subsequent manure was accompanied by odorous emissions comparable with consumption of the barley-based diet. However, the influence exerted by purified dietary β-glucans in ameliorating manure ammonia emissions comparable
with an intact source of β-glucans was not substantial, and may reflect the functionality of β-glucans as they relate to other
cell wall constituents in native barley
In summary, the current study demonstrates that an extracted, purified β-glucan source may be successfully supplemented to a wheat-based pig diet without the implications of depressed Coefficient of total tract apparent digestibility, as typically observed with consumption of a barley-based diet. Furthermore, offering a purified source of β-glucans resulted in beneficial reductions in odorous volatile fatty acids in the distal gastrointestinal tract and in excreted manure, and may reflect improvements in Nitrogen digestibility. This modification of the composition of the distal gastrointestinal tract and subsequent manure was accompanied by odorous emissions comparable with consumption of the barley-based diet. However, the influence exerted by purified dietary β-glucans in ameliorating manure ammonia emissions comparablewith an intact source of β-glucans was not substantial, and may reflect the functionality of β-glucans as they relate to othercell wall constituents in native barley
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