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  • Title: Assessment of fermentation in growing pigs given unmolassed sugar-beet pulp: a stoichiometric approach.
    Author: Zhu JQ, Fowler VR, Fuller MF.
    Journal: Br J Nutr; 1993 Mar; 69(2):511-25. PubMed ID: 8490004.
    Abstract:
    In four experiments growing pigs were given a cereal-based diet alone or supplemented with unmolassed sugar-beet pulp (SBP), used as a model substrate for fermentation. The rates of production of methane and gaseous hydrogen were measured and, together with the molar proportions of volatile fatty acids (VFA) in the digesta, used in stoichiometric calculations of fermentation. The resulting estimates were only one-sixth of the observed extent of digestion of SBP. Bacteriostatic levels of antibiotics reduced fermentation by more than half, as judged from the digestion of non-starch polysaccharides: allowing for the incomplete suppression of fermentation it was estimated that the production of methane and VFA could account completely for the digested SBP. The potential contribution of various routes of hydrogen disposal to the error of the stoichiometric calculations is discussed.
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