Yang Chunhe, Li Gan, Zhang Xiaojun, Gu Xianhong
State Key Laboratory of Animal Nutrition,Institute of Animal Science,Chinese Academy of Agricultural Sciences,People's Republic of China.
J Dairy Res. 2018 May;85(2):201-203. doi: 10.1017/S0022029918000213.
The objectives of the research reported in this Research Communication were to compare the variation of hind quarter skin surface temperature pre- and post- milking in dairy cows and to determine the optimal time to capture images by infrared thermography for improving the sensitivity and specificity of mastitis detection in dairy cows. Hind quarter infrared images of 102 Holstein dairy cows were captured from the caudal view by an infrared camera pre-milking and post-milking. The udder skin surface temperature was measured with the help of the image processing software. No significant difference was found between the left and right quarter skin surface temperature pre- and post- milking. The hind quarter skin surface temperature pre-milking was not significantly influenced by milk yield, but exhibited a rising trend along with the increase of milk yield. The hind quarter skin surface temperature post-milking was significantly influenced by milk yield. This leads us to conclude that the sensitivity and specificity of IRT in mastitis detection may be influenced by milk yield and it may be better to capture the infrared images of cow udders pre-milking.
本研究通讯中报告的研究目的是比较奶牛挤奶前后后躯皮肤表面温度的变化，并确定通过红外热成像捕捉图像的最佳时间，以提高奶牛乳腺炎检测的灵敏度和特异性。通过红外摄像机从后视图对102头荷斯坦奶牛挤奶前和挤奶后的后躯红外图像进行采集。借助图像处理软件测量乳房皮肤表面温度。挤奶前后左右四分体皮肤表面温度未发现显著差异。挤奶前，后躯皮肤表面温度不受产奶量的显著影响，但随产奶量增加呈上升趋势。挤奶后，后躯皮肤表面温度受产奶量显著影响。由此我们得出结论，红外热成像技术在乳腺炎检测中的灵敏度和特异性可能受产奶量影响，挤奶前采集奶牛乳房红外图像可能更好。
