Body Temperature Monitoring Using Subcutaneously Implanted Thermo-loggers from Holstein Steers
| Autor: | Hyo-Pyo Lee, Yung Mi Lee, Duyeol Kim, Jin-Duck Bok, Yun-Shik Choi, Soon-Beom Kang, Hong Ghi Lee, Inhyung Lee |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Temperature monitoring
lcsh:Animal biochemistry Rectal temperature Anatomy Fever Detection Winter time Biology Lateral neck Article Circadian Rhythm Correction algorithm Summer season Animal science Subcutaneous Temperature Cattle Thermo-logger Animal Science and Zoology Circadian rhythm lcsh:Animal culture lcsh:QP501-801 Food Science Field conditions lcsh:SF1-1100 |
| Zdroj: | Asian-Australasian Journal of Animal Sciences, Vol 29, Iss 2, Pp 299-306 (2016) ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES(29): 2 Asian-Australasian Journal of Animal Sciences |
| ISSN: | 1976-5517 1011-2367 |
| Popis: | Body temperature (BT) monitoring in cattle could be used to early detect fever from infectious disease or physiological events. Various ways to measure BT have been applied at different locations on cattle including rectum, reticulum, milk, subcutis and ear canal. In other to evaluate the temperature stability and reliability of subcutaneous temperature (ST) in highly fluctuating field conditions for continuous BT monitoring, long term ST profiles were collected and analyzed from cattle in autumn/winter and summer season by surgically implanted thermo-logger devices. Purposes of this study were to assess ST in the field condition as a reference BT and to determine any location effect of implantation on ST profile. In results, ST profile in cattle showed a clear circadian rhythm with daily lowest at 05: 00 to 07: 00 AM and highest around midnight and rather stable temperature readings (mean +/- standard deviation [SD], 37.1 degrees C to 37.36 degrees C +/- 0.91 degrees C to 1.02 degrees C). STs are 1.39 degrees C to 1.65 degrees C lower than the rectal temperature and sometimes showed an irregular temperature drop below the normal physiologic one: 19.4% or 36.4% of 54,192 readings were below 36.5 degrees C or 37 degrees C, respectively. Thus, for BT monitoring purposes in a fever-alarming-system, a correction algorithm is necessary to remove the influences of ambient temperature and animal resting behavior especially in winter time. One way to do this is simply discard outlier readings below 36.5 degrees C or 37 degrees C resulting in a much improved mean +/- SD of 37.6 degrees C +/- 0.64 degrees C or 37.8 degrees C +/- 0.55 degrees C, respectively. For location the upper scapula region seems the most reliable and convenient site for implantation of a thermo-sensor tag in terms of relatively low influence by ambient temperature and easy insertion compared to lower scapula or lateral neck. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|