Survey in central Kentucky for prevalence of Anoplocephala perfoliata in horses at necropsy in 1992.

This research paper discusses a survey conducted in central Kentucky to gauge the prevalence of the tapeworm Anoplocephala perfoliata in horses. The study, conducted in 1992, sampled 118 horses and found a high prevalence of the tapeworm among both Thoroughbred and non-Thoroughbred horses.

Study Design and Collection

• The study was conducted between 28 August and 21 December in 1992.
• A total of 118 horses were examined post-mortem (necropsy) to identify prevalence and infection rates of the Anoplocephala perfoliata tapeworm.
• The horses were selected from central Kentucky, with no specification provided about selection methods or sample representation.

Findings

• The prevalence of the tapeworm was found to be quite high. In Thoroughbreds, 64% of the 81 horses examined were infected. In non-Thoroughbreds, the infection rate was slightly lower, at 54% out of 37 horses examined.
• The number of tapeworms in infected horses varied significantly, ranging from one to 853.

Data Categorization

• The researchers also categorized the infection data according to various factors. These factors included the breed of the horse, the sex of the horse, the age of the horse, and the month of necropsy.
• The breeds were divided into Thoroughbreds and non-Thoroughbreds.
• Sex differentiation categorized horses into males (38), geldings (8), and females (72). Gender of horses seemed to skew heavily towards females in this study.
• The ages of the horses ranged from 1 to 31 years.
• Month of necropsy could provide valuable information about potential seasonal patterns of infection.

Implication

• The high prevalence in the sample suggests that Anoplocephala perfoliata could be a serious equine health issue in central Kentucky, and perhaps other similar regions.
• Variation in the number of tapeworms indicates the severity of infection can vary drastically from horse to horse.
• Differences in prevalence between different groups (breeds, sexes, ages) might point to certain risk factors, although this would need to be researched further.