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Effect of exercise and suspensory on scrotal surface temperature in the stallion.


Staempfli, S; Janett, F; Burger, D; Kündig, H; Imboden, I; Hässig, M; Thun, R (2006). Effect of exercise and suspensory on scrotal surface temperature in the stallion. Theriogenology, 66(9):2120-2126.

Abstract

In this study, the effect of exercise (treadmill, riding) on scrotal surface temperature (SST) in the stallion with and without suspensory was evaluated. Experiments were carried out between September and November 2004 using 12 Franches-Montagnes stallions from the National Stud in Avenches (Switzerland). Each stallion performed a standardized incremental treadmill and a ridden test with and without suspensory. The intensity of exercise was monitored by heart rate and blood lactate concentration. For SST measurements, special thermistors were developed and affixed to the most ventral part of the scrotum over each testis. SST was recorded telemetrically at 1min intervals. Our results show that type of exercise (treadmill/ridden) and suspensory (with/without) significantly influenced SST. The mean SST level was higher during treadmill (32.2+/-0.02 degrees C) than during ridden exercise (30.4+/-0.03 degrees C) and mean SST differences between stallions with and without suspensory were smaller in treadmill (0.4 degrees C) than in ridden (2 degrees C) exercise. These findings clearly demonstrate that ambient airflow, which was higher during ridden exercise, is important and effective in SST regulation. In order to prevent possible thermal damage to spermatogenic cells we recommend removing the suspensory immediately after exercise.

Abstract

In this study, the effect of exercise (treadmill, riding) on scrotal surface temperature (SST) in the stallion with and without suspensory was evaluated. Experiments were carried out between September and November 2004 using 12 Franches-Montagnes stallions from the National Stud in Avenches (Switzerland). Each stallion performed a standardized incremental treadmill and a ridden test with and without suspensory. The intensity of exercise was monitored by heart rate and blood lactate concentration. For SST measurements, special thermistors were developed and affixed to the most ventral part of the scrotum over each testis. SST was recorded telemetrically at 1min intervals. Our results show that type of exercise (treadmill/ridden) and suspensory (with/without) significantly influenced SST. The mean SST level was higher during treadmill (32.2+/-0.02 degrees C) than during ridden exercise (30.4+/-0.03 degrees C) and mean SST differences between stallions with and without suspensory were smaller in treadmill (0.4 degrees C) than in ridden (2 degrees C) exercise. These findings clearly demonstrate that ambient airflow, which was higher during ridden exercise, is important and effective in SST regulation. In order to prevent possible thermal damage to spermatogenic cells we recommend removing the suspensory immediately after exercise.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:05 Vetsuisse Faculty > Veterinary Clinic > Department of Farm Animals
Dewey Decimal Classification:570 Life sciences; biology
630 Agriculture
Language:English
Date:2006
Deposited On:26 Mar 2009 15:45
Last Modified:05 Apr 2016 12:28
Publisher:Elsevier
ISSN:0093-691X
Publisher DOI:https://doi.org/10.1016/j.theriogenology.2006.06.008
PubMed ID:16876858

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