Time-dependent changes were observed forthe bacterial metabolites in the faeces of the sows, withhigher concentrations of D- and L-lactate (both P= 0.002)and propionic acid (P<0.001) on day 4 a.p. compared tothe days 1 and 5 p.p. In contrast, the amounts of aceticacid were lower (P < 0.001) on day 4 a.p. compared to thedays 1 and 5 p.p.
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