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Evaluation of management stress in the domestic animals by measuring behavior and heart rate variability

通过测量行为和心率变异性评估家畜的管理压力

基本信息

批准号：
12660242
负责人：
MATSUI Kanji
金额：
$ 2.3万
依托单位：
Shinshu University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2002
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12660242/
关键词：
Grazing cattle Alighted flies Stress Laying hen Telemeter Grooming behavior Kiso horse Heart rate variability 心拍数見繕い行動心電図姿勢吸血昆虫食草行動牛馬

项目摘要

In summer, grazing cattle carries out various grooming behavior (head swing, leg raising, tail swishing) for dispersing alighted flies, and the files seem to become a stress for the grazing cattle. Therefore the data logger for recording the tail swishing frequency as an index to the stress was developed, and the practicability was verified. Moreover, influence of alighted flies on grazing behavior, resting behavior and heart rate was examined. Our finding indicates that jaw movement frequency during grazing decreased by the appearance of the head swing. Grazing behavior and resting time were obstructed by the presence of flies. Also, heart rate in the stand-resting was higher significantly.The diurnal variation of body temperature, heart rate and body activity in the laying hens was examined by the mounting of the small telemeter in peritoneal cavity. The experiment was carried out by the setting of three stress environments as follows: feed withdrawal during 20 hours for two days (feed withdrawal trial), decreasing of floor space to 62. 5% (space restriction trial), and shortening of light period for 6 hours (light reduction trial). In feed withdrawal trial, heart rate, body temperature and body activity decreased. In space restriction trial, heart rate and body temperature increased in the light and dark periods, and in light reduction trial, heart rate decreased in the light period and increased in the dark period.Night posture, body temperature and electrocardiogram were recorded using the Kiso horse. Our observations indicate that electromyogratn which mixed in the base line of electrocardiogram disappeared in lateral lying and tachycardia intermingled with bradycardia. From these results, it is concluded that this period was in the REM sleep. Although power spectrum analysis of heart rate variability was carried out using the night electrocardiogram, it was not possible to evaluate autonomic nerves activity from each parameter.

在夏季，放牧牛进行各种梳理行为（头部摆动，腿抬起，尾巴摆动），以驱散落蝇，文件似乎成为放牧牛的压力。为此，研制了以尾部摆动频率为指标的数据记录仪，并验证了其实用性。此外，还研究了落蝇对食饵行为、休息行为和心率的影响。我们的研究结果表明，下颌运动频率在放牧过程中减少了头部摆动的外观。食草行为和休息时间被苍蝇的存在所阻碍。通过在蛋鸡腹腔内安装小型体温遥测仪，测定了蛋鸡体温、心率和身体活动的日变化。通过设置如下三种应激环境来进行实验：在20小时内停饲两天（停饲试验），将占地面积减少到62。5%（空间限制试验）和缩短光照时间6小时（减光试验）。在停饲试验中，心率、体温和身体活动降低。在空间限制试验中，心率和体温在光照和黑暗期间升高，在减光试验中，心率在光照期间降低，在黑暗期间升高。结果表明，侧卧时，混合在心电图基线上的肌电消失，心动过速与心动过缓混合。根据这些结果，可以得出结论，这段时间是在REM睡眠。虽然使用夜间心电图进行心率变异性的功率谱分析，但无法从每个参数评估自主神经活动。