Suyama Yukino, Matsuda Keiichi, Teshima Takahiro, Matsumoto Hirotaka, Koyama Hidekazu
Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Medicine, School of Veterinary Medicine Faculty of Veterinary Science, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan.
Livestock Medical Training Center, Miyagi Prefecture Agricultural Mutual Aid Association, 39-4 Hirabayashi, Ohira, Kurokawa-gun, Miyagi 981-3602, Japan.
J Vet Med Sci. 2019 Jan 8;81(1):26-29. doi: 10.1292/jvms.18-0481. Epub 2018 Nov 16.
To identify reference values for the Schirmer tear test I (STT I) in Japanese black cattle, investigate the effects of variables (sex, age, time of day, and environment in the barn including environmental temperature, humidity, illuminance, and ammonia concentration) on tear production, and determine total tear protein concentration. One-hundred-and-thirty-seven Japanese black cattle (67 females and 70 males, age 3-90 days) were evaluated. The mean STT I values was 18.9 ± 2.9 mm/min (n=263) and significant effects were age and ammonia concentration in the barn. Mean total tear protein concentration was 1.18 ± 0.30 mg/ml in healthy cattle older than 15 days (n=38). It was suggested that age and ammonia concentration are related to fluctuation of tear volume.
为确定日本黑牛Schirmer I 试验（STT I）的参考值，研究变量（性别、年龄、一天中的时间以及牛舍环境，包括环境温度、湿度、光照度和氨浓度）对泪液分泌的影响，并测定泪液总蛋白浓度。对137头日本黑牛（67头雌性和70头雄性，年龄3 - 90天）进行了评估。STT I的平均值为18.9±2.9毫米/分钟（n = 263），年龄和牛舍中的氨浓度有显著影响。15日龄以上健康牛的泪液总蛋白平均浓度为1.18±0.30毫克/毫升（n = 38）。结果表明，年龄和氨浓度与泪液量的波动有关。
