## 5 Conclusions  
From the available sources, in which the authors devoted themselves to monitoring the rectal temperature and the eye temperature, they monitored the achieved deviation from the recorded value of the eye temperature using IRT. They statistically evaluated the measured data, which show that IRT can be used as a substitute for measuring the rectal body of animals. However, we subjected our measured data to a different method of statistical evaluation. The calculated difference between RT and ET, which we subjected to a statistical evaluation of evidence, linear regression, we found that the relative humidity is a more suitable parameter for monitoring the dependence, as it is positively correlated with the difference in the mentioned temperatures. The practical goal of our research showed us that the higher the RH, the lower the temperature difference between RT and ET. The results of our study showed that in all three cases, a high degree of dependence of the RT-ET difference obtained by non-contact and contact measurement was not detected in comparison with the environmental factors of the environment. For the RT-ET difference, only a low degree of correlation was found both for temperature (where the correlation coefficient R = 0.22) and for the temperature-humidity index THI (where the correlation coefficient R = 0.23). However, this monitored animal temperature difference (RT-ET) showed a moderate degree of dependence on relative air humidity. The positive correlation coefficient for T and THI draws attention to the high criticality of summer measurements, when, especially in extremely hot and dry weather, higher temperature differences between the detected methods should be expected. Here, we have to realize that if we are looking at the difference between RT and ET, the time passed since the closing of the eyelid (blinking)is important because by closing the eyelid, the temperature of the eye harmonizes with the temperature of the body. Since the relative humidity of the air is usually higher in housing facilities for dairy cattle, the use of infrared thermography for detecting the increased temperature of animals appears to be a more accurate method even in a wetter environment (which is an advantage for this type of measurement. This moderate degree of negative correlation dependence, through verified measurements during three years, after further refinement of the methodology supports the validity of thermovision measurements in dairy farming facilities to ensure good welfare for dairy cows.  
Conceptualization, G.L. and I.K.; methodology, G.L. and I.K.; software, G.L. and S.B.; validation, R.G., S.B. and I.K.; formal analysis, G.L. and I.K.; investigation, S.B. and P.K.; resources, P.K.; data curation, S.B. and P.K.; writing--original draft preparation, G.L. and S.B.; writing--review and editing, G.L. and I.K.; visualization, G.L., S.B. and I.K.; supervision, R.G., S.B. and I.K.; project administration, R.G.; funding acquisition, R.G. All authors have read and agreed to the published version of the manuscript.  
This publication was supported by the Ministry of Education, Science, Research and Sport of the Slovak republic, by the project VEGA 1/0709/21: Scientifically justified proposals for technological solutions of housing facilities ensuring optimal microclimatic conditions for livestock and their practical verification and their practical verification and also supported by the Ministry of Agriculture of the Czech Republic, institutional support MZE-RO0723.  
Not applicable.  
The data presented in this study are available on request from the corresponding author. The data are not publicly available due to privacy.  
The authors declare no conflicts of interest.