Factors associated with equine aural plaque in Brazil.

This research examines the prevalence and factors associated with equine aural plaques (skin lesions found in horses’ ears) in Brazil. Using a sample of 891 horses, researchers concluded that these plaques are widespread across the country and their presence can be influenced by several management practices.

Study Methodology

• The study involved a collection of 891 horses of varying ages, sexes, and breeds from several regions in Brazil.
• Through a general body observation and specific examination of both ears, the presence and nature of any aural plaques were determined.
• Data was collected on field management practices, individual lesion characteristics, the presence of ear ticks, and grooming patterns, specifically for the 109 horses shown to have clinical signs of plaques.
• The team conducted a statistical analysis to ascertain the frequency distribution of aural plaques and test for relationships between the presence of these plaques and the different variables investigated.

Study Findings

• The study found a significant prevalence of aural plaques. 85% of the 47 farms assessed had at least one horse suffering from the disease, with a total of 14.8% (or 132 out of 891) horses presenting aural plaque symptoms.
• The results indicated associations between the presence of these plaques and certain management practices. Particularly, a semi-intensive management system and regular ear grooming correlated with a higher prevalence of “coalescing” aural plaques, where different plaques merge to form a wider area of affected skin.

Conclusion

• The research evidenced that aural plaques are rampant in Brazil and proposed an association with certain management decisions. However, further studies are required to definitively ascertain these associations and understand their full effects on the development of aural plaques.
• By shedding light on factors that may exacerbate the occurrence of these lesions, the study sets a foundation for developing improved prevention and treatment strategies to enhance the health and commercial value of horses.