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Evaluating rumen temperature as an estimate of core body temperature in Angus feedlot cattle during summer.

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Title Evaluating rumen temperature as an estimate of core body temperature in Angus feedlot cattle during summer.
Not Available
 
Creator Lees AM
Sejian V
Lees JC
Sullivan ML
Lisle AT
Gaughan JB
 
Subject Rectal Temperature
Angus feedlot cattle
Rumen Temperature
relative humidity
 
Description Not Available
This study was conducted to determine the relationship between rectal temperature (TREC) and rumen temperature (TRUM) and to assess if TRUM could be used as a proxy measure of core body temperature (TCORE) in feedlot cattle. Eighty Angus steers (388.8 ± 2.1 kg) were orally administered with rumen temperature boluses. Rumen temperatures were recorded at 10-min intervals over 128 days from all 80 steers. To define the suitability of TRUM as an estimation of TCORE, TREC were obtained from all steers at 7-day intervals (n = 16). Eight feedlot pens were used where there were 10 steers per pen (162 m2). Shade was available in each pen (1.8 m2/animal; 90% solar block). Climatic data were recorded at 30-min intervals, including ambient temperature (TA; °C); relative humidity (RH; %); wind speed (WS; m/s) and direction; solar radiation (SR; W/m2); and black globe temperature (BGT; °C). Rainfall (mm) was recorded daily at 0900 h. From these data, temperature humidity index (THI), heat load index (HLI) and accumulated heat load (AHL) were calculated. Individual 10-min TRUM data were converted to an individual hourly average. Pooled mean hourly TRUM data from the 128-day data were used to establish the diurnal rhythm of TRUM where the mean minimum (39.19 ± 0.01 °C) and mean maximum (40.04 ± 0.01 °C) were observed at 0800 h and 2000 h respectively. A partial correlation coefficient indicated that there were moderate to strong relationships between TRUM and TREC using both real-time (r = 0.55; P
Not Available
 
Date 2020-06-09T10:35:13Z
2020-06-09T10:35:13Z
2019-03-13
 
Type Research Paper
 
Identifier Lees AM, Sejian V, Lees JC, Sullivan ML, Lisle AT, Gaughan JB. 2019. Evaluating rumen temperature as an estimate of core body temperature in Angus feedlot cattle during summer. International Journal of Biometeorology, 63:939-947.
1432-1254
http://krishi.icar.gov.in/jspui/handle/123456789/36914
 
Language English
 
Relation Not Available;
 
Publisher Springer