Aerobic bacterial organisms in oral cavities of hunting dogs could infect bite wounds. Oral swabs from hunting dogs in rural communities located in a south western state of Nigeria were collected and investigated for aerobic bacteria. Sixty two samples examined yielded a total yield of 101 aerobic bacterial isolates belonging to 12 genera. The species of bacteria detected included Bacillus spp, Pseudomonas spp, Staphylococcus spp, Streptococcus spp, Aeromonas spp, Burkholderia spp, Citrobacter spp, Escherichia spp, Enterobacter spp, Pasteurella spp, Burkholderia spp, Shewanella spp and Vibrio spp. Susceptibility of all identified isolates to antimicrobial agents was determined by the standard Kirby-Bauer disk diffusion method. In all, the isolates showed resistance to ampicillin (90.1%), chloramphenicol (79.2%), ciprofloxacin (33.7%), enrofloxacin (42.6%), gentamicin (74.4%), nalidixic acid (82.2%), neomycin (80.2%), norfloxacin (42.6%), penicillin (75.2%), sulphamethoxazole (91.1%), streptomycin (88.1%), tetracycline (90.1%), amoxicillin/clavulanic acid (55.4%). This study reinforces the need for dog bite wound microbial culture and antimicrobial sensitivity test as isolates showed varied antimicrobial susceptibility patterns. The oral cavities of hunting dogs are laden with multi-drug resistant bacteria of significant public health importance that could be transferred to humans through contaminated hunted games and bite wound.
Numerous viruses, including astroviruses, reoviruses, rotaviruses, coronaviruses, and adenoviruses, have been implicated as causative agents of enteric disease. This is because they have been isolated from or identified in the intestines and intestinal contents of affected poultry flocks. Four experiments were conducted to reproduce enteritis in broiler birds using rotavirus and Salmonella pullorum. Fifty-two broiler birds were obtained and randomly divided into 4 groups. Group A chicks were inoculated with 1 X 10 6 pfu/ml of rotavirus, group B chicks were inoculated with 1 X 10 6 cfu/ml of Salmonella pullorum, group C chicks were inoculated with 1 X 10 6 pfu/ml of rotavirus and 1 X 10 6 cfu/ml of Salmonella pullorum, while group D birds were given 1ml of PBS alone. Birds in all groups were observed daily for clinical signs and the intestines were processed for histopathological evaluation. Diarrhea and depression were the major signs in chicks given any one of the inoculum. Histological changes were characterized by swollen villus tips and constricted villus bases, proliferation of enterocytes and necrotic villi. Significant growth retardation was observed in chicks given either rotavirus or Salmonella pullorum, but this effect was more pronounced in chicks given the combination of rotavirus and Salmonella pullorum. The present study reveals that oral inoculation of birds with rotavirus or rotavirus/Salmonella pullorum combination leads to diarrhoea and significant growth depression. It is thus important to continuously screen and prevent against organisms infecting the GIT for optimal performance of birds.
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