Dermatophilosis
(Dermatophilus
congolensis )
Dermatophilus congolensis is an equine bacterial skin pathogen
of worldwide distribution, which can result in cutaneous irritation
on the distal limbs of equine species. It is also referred to as
rain rot, dew poisoning and cutaneous streptotrichosis. Although
it may affect many animal species, it is seen most frequently in
horses, cattle, sheep and goats. In temperate climates it can severely
affect productivity in sheep and cattle. Present treatment relies
heavily on topical applications in the form of washes and lotions,
as only the most severe cases warrant the use of antibiotics.
The
aim of the study was to investigate a range of herbs, namely: garlic,
nettle, rosemary, dandelion and aloe vera and assess inhibition
of herbal extracts on the growth of D. congolensis in-vitro.
Blank discs were impregnated with herbal extracts or sterile water
(control) and the inhibition of growth was measured in-vitro. D.congolensis
was spread plated onto blood agar plates and the impregnated discs
were applied in the centre of the plates. Measurements were taken
of the inhibition rings after 48 hrs incubation.
Garlic,
nettle, rosemary, aloe vera and dandelion all showed inhibition
to some degree, although some appeared to simply disrupt homogenous
growth. Only garlic, nettle and aloe vera showed a significant level
of inhibition compared to that of rosemary and dandelion (p<0.05).
These finding suggest that some herbs may be of use in topical application
for mudfever treatment. More research is required to determine the
best candidates and confirm their efficacy.
For
more information on D.congolensis and Mudfever return to
research
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