Vainionpää Mari, Tienhaara Esa-Pekka, Raekallio Marja, Junnila Jouni, Snellman Marjatta, Vainio Outi
Department of Equine and Small Animal Medicine, Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Helsinki, Koetilantie 7, 00014 Helsinki, Finland.
ScientificWorldJournal. 2012;2012:182749. doi: 10.1100/2012/182749. Epub 2012 Oct 14.
A total of 47 racing greyhounds were enrolled in this study on two race days (in July and September, resp.) at a racetrack. Twelve of the dogs participated in the study on both days. Thermographic images were taken before and after each race. From the images, superficial temperature points of selected sites (tendo calcaneus, musculus gastrocnemius, musculus gracilis, and musculus biceps femoris portio caudalis) were taken and used to investigate the differences in superficial temperatures before and after the race. The thermographic images were compared between the right and left legs of a dog, between the raced distances, and between the two race days. The theoretical heat capacity of a racing greyhound was calculated. With regard to all distances raced, the superficial temperatures measured from the musculus gastrocnemius were significantly higher after the race than at baseline. No significant differences were found between the left and right legs of a dog after completing any of the distances. Significant difference was found between the two race days. The heat loss mechanisms of racing greyhounds during the race through forced conduction, radiation, evaporation, and panting can be considered adequate when observing the calculated heat capacity of the dogs.
在一个赛道的两个比赛日（分别在7月和9月），共有47只赛犬参与了本研究。其中12只犬在两天都参与了研究。在每场比赛前后拍摄热成像图像。从图像中获取选定部位（跟腱、腓肠肌、股薄肌和股二头肌尾部）的体表温度点，并用于研究比赛前后体表温度的差异。对犬的左右腿之间、比赛距离之间以及两个比赛日之间的热成像图像进行了比较。计算了赛犬的理论热容量。对于所有比赛距离，腓肠肌测量的体表温度在比赛后显著高于基线。完成任何距离比赛后，犬的左右腿之间未发现显著差异。两个比赛日之间存在显著差异。当观察犬的计算热容量时，可以认为赛犬在比赛期间通过强制传导、辐射、蒸发和喘气的热损失机制是充分的。
