Effects of intraruminal infusion of propionic acid at 5.5 and 13.7 g/h on plasma metabolites have been investigated in goats fed a concentrate-roughage ration at 2-h intervals. Propionic acid increased plasma glucose and insulin concentrations, but did not change those of lactate, D(−)-3-hydroxybutyrate and prolactin. Data support the glucogenic theory in relation to low milk fat syndrome.
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Emmanuel et al. (1984) studied this question.
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