@article{article_635766, title={The effect of different levels of teat-end hyperkeratosis on mammary infrared thermograph and mastitis in dairy cows}, journal={Ankara Üniversitesi Veteriner Fakültesi Dergisi}, volume={66}, pages={21–26}, year={2018}, author={Juozaıtıene, Vida and Juozaıtıs, Arunas and Zymantıene, Judita and Oberauskas, Vaidas and Anıulıenė, Albina and Kajokıenė, Lina and Yılmaz, Ayhan and Sımokaıtıenė, Aistė}, keywords={Dairy cows,infrared thermography,mastitis,somatic cell count,teat-end hyperkeratosis}, abstract={<span class="fontstyle0">The object of this study was to assay different levels of teat hyperkeratosis and to determine the connections between <br>teat thermographic characteristics, somatic cells count (SCC) and mastitis in dairy cows. A total of 920 teats of 230 Lithuanian Black <br>and White cows were evaluated to assess teat-end conditions and the thermographic characteristics were determined before evening <br>milking. Teats of the animals were grouped into four different classes of hyperkeratosis. Additionally, quarters of udder were divided <br>into three different classes based on the California mastitis test (CMT) and clinical signs: group 1 (healthy), group 2 (subclinical <br>mastitis), and group 3 (clinical mastitis). The 44.3% of the teats were given a score of N (No ring), 41.1% of the teats were scored S <br>(smooth ring), 11.8% of teats were given a score R (rough ring) and 2.9% of teats were given a score VR (very rough skin). The N and <br>S groups had more healthy udder quarters than R and VR groups (P<0.001). Analysis of thermographic images at the teat sinuses <br>showed that group 1 had lower teat temperature (0.93-1.32 </span> <span class="fontstyle0" style="font-size:6pt;">0 </span> <span class="fontstyle0">C) than group 2 and group 3 (P<0.01). There was a significant positive <br>correlation between milk SCC and temperature of the teats evaluated by hyperkeratosis scores N, S, and R. The results of the present <br>study clearly showed that there was a significant connection between different levels of hyperkeratosis and teat temperature in all <br>groups, indicating a greater risk to mastitis. </span>   <br style="font-variant-numeric: normal; font-variant-east-asian: normal; line-height: normal; text-align: -webkit-auto; text-size-adjust: auto;">}, number={1}, publisher={Ankara University}