Anaerobic bacteria in 21 horses with pleuropneumonia.

The research article focuses on the role of anaerobic bacteria in causing pleuropneumonia in horses and correlating their presence with survival rates.

Objective of the Research

The researchers aimed to explore the presence and relevance of anaerobic bacteria, specifically Bacteroides oralis and B melaninogenicus, in causing pleuropneumonia – a severe lung disease in horses. They wanted to assess the survival rates of those horses with these types of bacteria compared to those without.

Research Methodology and Results

• The researchers examined a total of 46 horses suffering from pleuropneumonia.
• They collected and analyzed pleural fluid or tracheobronchial aspirate from these horses to identify and isolate any anaerobic bacteria present.
• The results demonstrated that 21 out of the 46 horses – nearly half – had anaerobic bacteria.
• Bacteroides oralis and B melaninogenicus were the most frequently isolated anaerobic bacteria.
• Further observation also revealed a putrid odor associated with the pleural fluid and/or breath in 62% of the horses from which anaerobic bacteria were isolated.

Conclusion and Impact on Survival Rates

• The researchers deduced that the survival rates for horses with these anaerobic bacteria were significantly lower than for horses without this bacterial strain.
• This trend was particularly noticeable in horses that produced a putrid odor, which possibly acted as a sign of bacterial infection.
• The research effectively highlighted the role of anaerobic bacteria, often overlooked, in causing potentially fatal lung diseases in horses, thus indicating the need for further research and improved treatment strategies.