Bacteriological studies on surgical and non-surgical wounds located on body surface of animals

Eleven different species of bacteria were identified from surgical and non-surgical wound samples located on body surface of buffaloes, cattle, sheep and goats. The species were Streptococcus pyogenes, Streptococcus uberis, Staphylococcus aureus, Staphylococcus intermedius, Corynebacterium diphtheriae, Corynebacterium pyogenes, Escherichia coli, Proteus vulgeris, Pseudomonas aeruginosa, Micrococcus luteus and Stomatococcus mucilaginous. Of the 100 samples studied, 15 were from buffaloes, 30 from cattle, 29 from sheep and 26 from goats and the percentage prevalence of infection in wound samples of the above animals was 93.3, 90, 100 and 100 respectively. The incidence of bacterial species in opened and un-opened wounds was demonstrated. The incidence of bacterial infection in opened wounds of buffaloes and cattle was 92.85 and 86.36% respectively and in sheep and goats was 100%. The incidence of infection in un-opened wounds of the above four species of animals observed as 100%. A survey on mixed infection was also carried-out during the present study. The mixed infections in samples of buffaloes, cattle, sheep and goats were common and recorded as 80, 90, 86.20 and 80.76% respectively. The occurrence of individual bacterial species in wound samples were also investigated in this study. The frequency of incidence of Strept.pyogenes, Strept.uberis, Staph.aureus, Staph.intermedius, Coryn.diphtheriae, Coryn.pyogenes, Ecoli, Prot.vulgaris, Pseud.aeurginosa, Micro.luteus and Stomat.mucilaginosus in wounds of animals was 44.19, 16.66, 17.70, 10.4, 17.70, 13.54, 31.25, 8.3, 15.6, 41.66 and 6.25% respectively. Four of the 100 samples examined were found to be organisms free while pure infections were found in only 15. However, mixed infections 2-4 species were recorded in individual samples. While in a single sample 4 different species were detected. The wound samples examined in our study contained 1(15%), 2(49%), 3(31%) and 4(1%) species.