Abstract
This study was designed to assess the influence of disease-inducing agents other than Dermatophilus congolensis on the incidence of bovine dermatophilosis from cattle farms in Federal University of Agriculture, Abeokuta and Olabisi Onabanjo University, Ogun State and also from Akinyele cattle market in Oyo State. Skin scrapings collected from cattle with typical lesions of dermatophilosis were examined for the presence of bacteria, fungi and ectoparasites. Out of the 57 animals examined with typical skin lesions of dermatophilosis, Dermatophilus congolensis organism was cultured from 23 cases. Other bacterial organisms identified included Staphylococcus aureus (28 cases), Staphylococcus albus (35 cases), Bacillus mycoides (14 cases), Bacillus cereus (1 case), haemolytic Streptococcus (5 cases) Pseudomonas aeruginosa (13 cases), Escherichia coli (16 cases), Proteus spp (4 cases) and Norcardia spp (5 cases). Ticks (mostly Amblyomma variegatum) were seen in all the 57 animals while Demodex bovis, Sarcoptes scabiei var bovis and lice were seen in 15, 4 and 8 cases respectively. It was inferred that secondary bacterial invasions are associated with the pathogenesis and severity of the infection and the presence of ticks and mange mites may serve as the portal of entry for dermatophilosis infection. The control of dermatophilosis should take into account of arthropod vectors and secondary bacterial complications.
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