Study on the relationship between ruminations number and udder surface temperature in cows using infrared thermography

In this research, we study the relationship between the number of ruminations and the surface temperature of the udder in dairy cows using infrared thermography. The results show a dependence of the number of ruminations and the surface temperature of the udder on the Temperature-humidity index (THI), which increases with its increase. The correlation coefficient between udder surface temperature and rumination number also increased with increasing THI, which may be a sign of a relationship between them. Udder surface temperature was measured by the method of infrared thermography, THI was reported with a Kestrel device, and ruminations were recorded by counting the number of eructations using a microphone attached to the left side of the cows' neck. The study shows that infrared thermography can be used to accurately and inexpensively monitor rumination and udder surface temperature in dairy cows.