In a recent study, Ghasemi et al. (2014) reported that ADG of broilers receiving diets supplemented with
commercial prebiotic was higher compared to the unsupplemented-control group only during the grower
period (11–28 days). These authors also demonstrated that supplementation of synbiotic (1:1 prebiotic and
probiotic) at similar level significantly improved ADG for the entire growth period. Although it was reported
that the PKE extract using similar protocol as the present study contained approximately 20 g oligosaccharides/
kg PKE primarily in the form of mannobiose (Chen et al., 2015), the extract used in the present, as
well as recently by Chen et al. (2015), was in a crude form containing only 60–65% carbohydrates with the
remaining fraction made up of 10–15% protein and 15– 20% lipids (data not shown). Based on the above information,
the lack of significant effect of OligoPKE supplementation on ADG of broilers recorded could be
due to the low rate of supplementation, thus could not sufficiently promote growth and activity of probiotic
bacteria.
In a recent study, Ghasemi et al. (2014) reported that ADG of broilers receiving diets supplemented withcommercial prebiotic was higher compared to the unsupplemented-control group only during the growerperiod (11–28 days). These authors also demonstrated that supplementation of synbiotic (1:1 prebiotic andprobiotic) at similar level significantly improved ADG for the entire growth period. Although it was reportedthat the PKE extract using similar protocol as the present study contained approximately 20 g oligosaccharides/kg PKE primarily in the form of mannobiose (Chen et al., 2015), the extract used in the present, aswell as recently by Chen et al. (2015), was in a crude form containing only 60–65% carbohydrates with theremaining fraction made up of 10–15% protein and 15– 20% lipids (data not shown). Based on the above information,the lack of significant effect of OligoPKE supplementation on ADG of broilers recorded could bedue to the low rate of supplementation, thus could not sufficiently promote growth and activity of probioticbacteria.
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