The use of computer network system for data exchange on the environmental adaptation trials in cattle.

1.牛舍内牛的生物学信息测量：构建了一套普通牛舍内牛的生物学和行为学信息自动测量系统。每分钟测量一次，将测量数据传输到个人计算机中并存储。计量项目如下。（1）生物学参数：产热、阴道温度、心率、呼吸频率。（2）行为参数：站立、躺卧、进食、反刍、饮水.行为对生物学参数的影响：使用上述装置连续五天测量四只怀孕的荷斯坦小母牛，结果总结如下。（1）体温在站立后下降，躺下后升高。站立后产热迅速增加，并在站立后8分钟内开始下降。（2）摄食后产热、体温和心率增加。反刍开始后，产热增加，而没有其他生物学参数的变化。（3）饮水后体温、心率下降.通过个人计算机网络进行数据交换。在国内商业网络服务中使用电子邮件系统进行长距离通信，在本地公告板系统（BBS）进行短距离通信似乎是最容易接受的。将来，综合业务数字网（ISDN）将更加普及，国际数据交换服务将在商业基础上发展。

1. Measurement of the biological information on cattle in a barn.The automatic measuring system on the biological and behavioral information in cattle tethered in a conventional dairy barn was constructed. The each data measured were transferred to personal computers and stored in after every minutes. The items measured were as follows.(1)Biological parameters : heat production, vaginal temperature, heart rate, respiration rate.(2)Behavioral parameters : standing, lying, eating, ruminating, drinking.2. Effects of behavior on the biological parameters.Four pregnant Holstein heifers were measured for five consecutive days using the apparatus mentioned above and the results were summarized as follows.(1)The body temperature decreased after standing up and increased after lying down. Heat production increased soon after standing and began to fall within eight minutes after standing.(2)The heat production, body temperature and heart rate increased after feeding. After the commencement of rumination the heat production increased, whereas no other biological parameters changed.(3)The body temperature and heart rate decreased after drinking water.3. Data exchange through the personal computer network.It seemed most acceptable that using an electric mail system on the domestic commercial network services for long distance communication and the local bulletin board system(BBS)for short distance communications.In future, the Integrated services digital network(ISDN)will become more popular and the international data exchange service progressing on a commercial bases.