Parasites in lungs of dead equids in Kentucky: emphasis on Dictyocaulus arnfieldi.

The research article investigates the prevalence of parasites, particularly Dictyocaulus arnfieldi, in the lungs of dead Thoroughbreds in Kentucky over a year-long period.

Objective of the Research

• The main aim of this research was to gain an understanding of the prevalence of parasite infections in the lungs of horses, emphasizing on Dictyocaulus arnfieldi, a common lungworm in equids. This was achieved by studying 488 dead Thoroughbreds in Kentucky.

Methodology

• The study used a relatively large sample size of 488 horses of ages ranging from 1 to 32 years. They originated from 215 different farms and 68 individual sources.
• The time frame of the research was from March 1, 1983, to February 29, 1984.
• The researchers conducted detailed lung examinations for all the animals involved in the study.

Results

• It was found that Dictyocaulus arnfieldi was present in 56 horses (11% of the total). This clearly indicated that it is a common lungworm in the studied horses.
• Other parasites such as the larvae of Parascaris equorum were found in 37 horses (8% of the total), and Habronema/Draschia in 67 horses (14% of the total), affirming the winter susceptibility of horses to several parasites.
• The presence of Dictyocaulus arnfieldi in 20 other selected dead equids was also observed.

Discussion

• The effect of ivermectin treatment on the prevalence of Dictyocaulus arnfieldi in horse lungs was also discussed, suggesting that the study might have had therapeutic intentions as well.
• While the research provided valuable insights into the prevalence of lung parasites in horses, it did not identify a causal link or indicate clear methods for prevention or treatment. This leaves room for further research in the field.