Epidemiological study of pasture-associated laminitis and concurrent risk factors in the South of England.

The research is a retrospective analysis of the risks associated with laminitis, a disease often found among equine populations, in a farm in East Anglia. The investigation showed that factors such as season, gender, and physical attributes of the animals significantly influence the incidence and prevalence of laminitis.

Background of the Study

• The project is a retrospective research on laminitis, a painful disease of the horse’s foot that affects the animal’s locomotion and overall well-being. It was conducted at a farm in East Anglia that houses around 1000 animals.
• The primary objective of this study was to identify risk factors associated with this disease. Medical records spanning from January 1997 to May 2000 and again from April 2005 to March 2008 were methodically examined to gather relevant data.

Main Findings of the Study

• The maximum prevalence of laminitis was observed in the month of May, with 2.6 per cent of animals affected. In terms of incidence, the same month reported the greatest number of new cases (16 cases/1000 animals).
• The study discovered a strong correlation between the incidence and prevalence of laminitis, the variables being the monthly temperature, rainfall, and hours of sunshine. Conditions that had more hours of sunshine positively influenced both prevalence and incidence.
• Females and light weight animals were discovered to be at a higher risk for laminitis according to the multivariate analysis of the collected data. Females had an odds ratio (OR) of 1.46, confirming the stronger likelihood of them developing the disease. For light animals, the odds ratio was 0.995.

Conclusions and Implications

• The findings of the study indicate that risk factors such as season, sex, and weight of the animal play a significant role in predisposing them to laminitis. It underscores that preventive measures and management strategies for the disease should take these aspects into account.
• The data suggest that increased sunshine hours expose animals to a higher risk of laminitis, possibly due to changes in the nutritional value of pasture or increased grazing. This insight can help veterinary professionals and animal caretakers to consider the season, the amount of sunlight, and other environmental aspects when devising strategies to prevent or control laminitis.