scholarly journals Validation of an intramuscularly-implanted microchip and a surface infrared thermometer to estimate core body temperature in broiler chickens exposed to heat stress

2017 ◽  
Vol 133 ◽  
pp. 1-8 ◽  
Author(s):  
O.S. Iyasere ◽  
S.A. Edwards ◽  
M. Bateson ◽  
M. Mitchell ◽  
J.H. Guy
Keyword(s):  
Heat Stress ◽  
Body Temperature ◽  
Broiler Chickens ◽  
Core Body Temperature ◽  
Infrared Thermometer ◽  
Core Body

scholarly journals Genetic parameters for hair characteristics and core body temperature in a multibreed Brahman–Angus herd1

2019 ◽  
Vol 97 (8) ◽  
pp. 3246-3252 ◽  
Author(s):  
Kaitlyn M Sarlo Davila ◽  
Heather Hamblen ◽  
Peter J Hansen ◽  
Serdal Dikmen ◽  
Pascal A Oltenacu ◽  
...  
Keyword(s):  
Heat Stress ◽  
Body Temperature ◽  
Genetic Parameters ◽  
Core Body Temperature ◽  
Cattle Breed ◽  
Measuring Device ◽  
Hair Samples ◽  
Diameter Core ◽  
Humidity Index ◽  
Core Body

Abstract Thermal stress in hot humid conditions limits cattle production. The objectives for this study were to estimate genetic parameters for hair characteristics and core body temperature under low and high temperature humidity index (THI) conditions. Hair samples were collected and measured for length and diameter. Core body temperature was measured as vaginal temperature every 15 min over a 5-d period using an iButton temperature measuring device implanted in a blank CIDR in 336 heifers from the University of Florida multibreed herd (ranging from 100% Angus to 100% Brahman). Restricted maximum likelihood procedures were used to estimate heritabilities from multiple bivariate animal models using the WOMBAT program. Estimates of heritability for hair diameter, undercoat length, topcoat length, body temperature under low THI conditions, and body temperature under high THI conditions were 0.50, 0.67, 0.42, 0.32, and 0.26, respectively. The genetic parameters estimated in this study indicate a large, exploitable genetic variance which can be selected upon to improve tolerance in cattle. Breed effects for differing compositions of Brahman and Angus were also estimated. As Brahman breed composition increased by 25% undercoat length, topcoat length, body temperature under low THI conditions, and body temperature under high THI conditions decreased by 1.32 mm, 2.94 mm, 0.11 °C, and 0.14 °C, respectively. Under both low and high THI conditions, cattle with 25% Brahman breed composition or greater maintained a significantly lower body temperature than the 100% Angus breed group. The incorporation of Brahman germplasm is recommended for herds that often experience heat stress conditions in order to increase resilience to heat stress.

The effects of heat stress on cognition in persons with multiple sclerosis

2011 ◽  
Vol 18 (4) ◽  
pp. 489-497 ◽  
Author(s):  
P Hämäläinen ◽  
A Ikonen ◽  
A Romberg ◽  
H Helenius ◽  
J Ruutiainen
Keyword(s):  
Multiple Sclerosis ◽  
Heat Stress ◽  
Body Temperature ◽  
Cognitive Functioning ◽  
Cognitive Deficits ◽  
Core Body Temperature ◽  
Heat Exposure ◽  
Heat Sensitivity ◽  
Serial Addition ◽  
Core Body

Background: Heat sensitivity and cognitive deficits are typical manifestations of multiple sclerosis (MS). Although cognitive deficits are quite well characterized, practically no data exist on the effects of heat on cognitive performances in MS. Objective: To assess the effects of short-term heat stress on cognitive functioning in subjects with MS. Methods: A total of 23 heat-sensitive MS and 19 healthy control (HC) subjects participated. Moderate heat exposure took place in a Finnish sauna. Cognitive functioning was measured with tests of sustained attention and processing speed, the Paced Auditory Serial Addition Test (PASAT 3” and 2”) and the computerized visual vigilance test, before, during and after heat exposure. Results: During the heat exposure, the core body temperature of the MS group rose significantly more ( p = 0.002) than that of the HC group. The heat stress worsened the performance of the MS group in the PASAT 3” ( p = 0.025) but not in the other cognitive measures. The performance in the PASAT 3” was reversed almost to the baseline level only 1- h after the heat exposure. Conclusions: A significant increase in core body temperature during heat stress is associated with a mild and reversible worsening of the PASAT 3” performance, while visual vigilance performance seems to remain almost unaffected.

Functional Data Analysis of Core Body Temperature in Response to Environmental Heat Stress

2016 ◽  
Vol 2016 (1) ◽  
Author(s):  
Vicki Hertzberg* ◽  
Lisa Elon ◽  
Valerie Mac ◽  
Abby Mutic ◽  
Katherine Peterman ◽  
...  
Keyword(s):  
Heat Stress ◽  
Data Analysis ◽  
Body Temperature ◽  
Functional Data Analysis ◽  
Functional Data ◽  
Core Body Temperature ◽  
Core Body

Comparison of estimated core body temperature measured with the BioHarness and rectal temperature under several heat stress conditions

2016 ◽  
Vol 13 (8) ◽  
pp. 612-620 ◽  
Author(s):  
Yongsuk Seo ◽  
Travis DiLeo ◽  
Jeffrey B. Powell ◽  
Jung-Hyun Kim ◽  
Raymond J. Roberge ◽  
...  
Keyword(s):  
Heat Stress ◽  
Body Temperature ◽  
Rectal Temperature ◽  
Core Body Temperature ◽  
Stress Conditions ◽  
Core Body

scholarly journals Continuous Forearm Cooling Attenuates Increase in Core Body Temperature of Elite Cyclists under Heat Stress

2019 ◽  
Vol 51 (Supplement) ◽  
pp. 135
Author(s):  
Eric T. Hedge ◽  
Kathryn A. Zuj ◽  
Alexander G. Stothart ◽  
Erica H. Gavel ◽  
Len S. Goodman ◽  
...  
Keyword(s):  
Heat Stress ◽  
Body Temperature ◽  
Core Body Temperature ◽  
Core Body ◽  
Elite Cyclists
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