Evaluation of coronary band temperatures in healthy horses.

The research focuses on assessing the temperature of the coronary band in healthy horses based on different diets. The study concludes that the coronary band temperature changes throughout the day and there is no significant relation with the horse’s diet.

Study Overview and Methodology

• The study aimed to measure the coronary band temperature (CBT) in healthy horses, particularly with different diets, specifically high-fructan and low-carbohydrate diets.
• The researchers used six healthy horses and implemented a 3 × 3 Latin square study design, taking into account time of day, and ambient temperature.
• Three diets were administered: treatment 1, involving 1 gram of fructan per kg fed daily in the morning; treatment 2, equating to the same quantity of fructan but fed in the afternoon; and treatment 3, which is a low-carbohydrate diet (7.2% carbohydrates).
• CBT of all four limbs for each horse, along with their rectal and ambient temperatures, were recorded hourly from 8 am to 10 pm for four consecutive days after starting each diet.
• Every horse was fed each diet, with a 10-day resting period (referred to as washout) between each change in the diet.

Data Analysis

• The researchers gathered a large dataset of 4,320 CBT readings, stemming from the six horses involved.
• These readings were analysed using a mixed linear model.
• The ranges in CBT from this sample varied from 9.6° to 35.5°C.

Result Interpretation

• CBT depicted a diurnal pattern, meaning it altered through the course of the day.
• The CBT was found to be positively associated with ambient temperature, indicating that it increased when the environmental temperature was high.
• Interestingly, the study found no association between the horse’s diet and the CBT.

Conclusion and Implications

• The research concluded that in healthy horses, the CBT significantly fluctuates during the day and among different limbs.
• Therefore, researchers advise that this factor should be considered when using CBT as an indication of potential laminitis (a painful condition of the horse’s hooves) or other clinical investigations.
• This research could aid practitioners and horse carers in obtaining more accurate readings, understanding the importance of environmental conditions and time of day on the CBT, and therefore potentially preventing or diagnosing conditions such as laminitis in a more timely and accurate manner.