[Occurrence of Parascaris equorum in foals and adult horses under different breeding conditions].

The research article explores the common occurrence of ascarids (a type of parasitic roundworm) in foals and the infection rate among adult horses. The study analyzes the effects of different breeding conditions, seasonal impacts and effectiveness of deworming medications.

Key Findings

• The research findings suggest that ascarids are prevalent among foals and 19.6% of adult horses were found to be infected. The study used a combination of autopsies and analyses of faecal samples from working horses to establish this.
• No significant seasonal influence was found on the egg per gram (EPG) in adult horses. This means that the rate of infection doesn’t vary markedly throughout the year, suggesting that the ascarids are less affected by external conditions like temperature or humidity.
• Another pertinent observation from the study is that animals aged between 5 and 6 months are particularly susceptible to ascarid infection. This might be due to their still developing immunity and makes them a greater risk group.
• An alarming finding is that despite the usage of bezimidazole compounds for deworming, 50% of foals were still found to be infected. This questions the efficacy of these commonly used anthelminthic drugs and calls for more research in this area.

Implications

• The high occurrence of ascarids in foals and adult horses reveals the vulnerability of these animals to parasitic infections. This implies a need for stronger veterinary care, regular monitoring, and possibly reconsidering breeding conditions/tactics.
• The study also shows that existing deworming methods, specifically the use of bezimidazole compounds, may not be as effective as thought. This necessitates revisiting the dosage or exploring alternative treatments.
• Understanding the most susceptible age group to these infections is central to creating targeted preventive measures and containment efforts.