Be cautious relying on rectal temperature changes to predict parturition. The results are variable depending upon the time the mare is going to foal and you may even not see a change. There is a change in core temperature, but one cannot easily take the core temperature of a horse (big core!).
Please note that opinions, product information, advice or suggestions posted on this bulletin board are not necessarily those of the management at Equine-Reproduction.com nor does the maintenance of the post position indicate an implicit or any endorsement of that information, opinion or product.
Further, although we have the greatest respect for the posters offering assistance here, you are advised to seek a consultation with your veterinarian prior to using information obtained from this board if it is of a veterinary nature.Proud to be sponsored and supported by: