Another interesting feature of bioflocs to further investigate with
respect to biocontrol effects is the capability to accumulate the bacterial
storage compound poly-β-hydroxybutyrate (PHB). PHB and PHBaccumulating
bacteria have been shown before to protect different
aquaculture animals from bacterial infections (De Schryver et al.,
2010; Defoirdt et al., 2007; Dinh et al., 2010; Halet et al., 2007).
PHB-accumulating bacteria are present in bioflocs as we have measured
PHB levels in bioflocs of between 0.5 and 18% of the dry matter
(Crab, 2010; De Schryver and Verstraete, 2009). The latter bioflocs
contain a sufficient PHB level to protect cultured animals from infection
by pathogenic bacteria
Another interesting feature of bioflocs to further investigate withrespect to biocontrol effects is the capability to accumulate the bacterialstorage compound poly-β-hydroxybutyrate (PHB). PHB and PHBaccumulatingbacteria have been shown before to protect differentaquaculture animals from bacterial infections (De Schryver et al.,2010; Defoirdt et al., 2007; Dinh et al., 2010; Halet et al., 2007).PHB-accumulating bacteria are present in bioflocs as we have measuredPHB levels in bioflocs of between 0.5 and 18% of the dry matter(Crab, 2010; De Schryver and Verstraete, 2009). The latter bioflocscontain a sufficient PHB level to protect cultured animals from infectionby pathogenic bacteria
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