Influence of environmental factors on infrared eye temperature measurements in cattle.

Environmental factors were evaluated to determine potential limitations in using cattle eye temperatures obtained through infrared thermography (IRT) for early disease detection systems or in animal welfare research studies. The effects of the following factors on IRT eye temperatures in cattle and a fabricated surrogate "eye" were evaluated: camera to object distance, wind speed, camera settings (distance, emissivity, and humidity), and solar loading. Wind speed in both live animals and using a surrogate "eye" was found to decrease the IRT temperature. In the presence of ∼ 7 km/h wind, the mean IRT eye temperature decreased by 0.43 ± 0.13 °C and; at higher wind speeds (∼ 12 km/h), the temperature decreased by 0.78 ± 0.33 °C. Direct sunlight was found to increase the IRT eye temperature by 0.56 ± 0.36 °C. It was determined that environmental factors impact IRT temperature measurements significantly and therefore must be managed to ensure reproducible and accurate readings.

[1]  E. Fiore,et al.  Thermographic Applications in Veterinary Medicine , 2012 .

[2]  J. Praks,et al.  Infrared temperature patterns of cow's body as an indicator for health control at precision cattle farming , 2012 .

[3]  J. Colyn,et al.  The non-invasive and automated detection of bovine respiratory disease onset in receiver calves using infrared thermography , 2011, Research in Veterinary Science.

[4]  J. Coetzee.  A review of pain assessment techniques and pharmacological approaches to pain relief after bovine castration: Practical implications for cattle production within the United States , 2011 .

[5]  E. Ng,et al.  IR imagers as fever monitoring devices: Physics, physiology, and clinical accuracy , 2006 .

[6]  K. Stafford,et al.  Noninvasive assessment of autonomic activity for evaluation of pain in calves, using surgical castration as a model. , 2010, Journal of dairy science.

[7]  Simon Gubbins,et al.  Normal variation in thermal radiated temperature in cattle: implications for foot-and-mouth disease detection , 2011, BMC veterinary research.

[8]  K. Schwartzkopf-Genswein,et al.  The use of infrared thermography to assess inflammation associated with hot-iron and freeze branding in cattle , 1997 .

[9]  D M Weary,et al.  Board-invited review: Using behavior to predict and identify ill health in animals. , 2009, Journal of animal science.

[10]  D. McCafferty.  The value of infrared thermography for research on mammals: previous applications and future directions , 2007 .

[11]  Stephen P. Miller,et al.  Application of infrared thermography as an indicator of heat and methane production and its use in the study of skin temperature in response to physiological events in dairy cattle (Bos taurus) , 2008 .

[12]  Paul Stothard,et al.  Whole genome resequencing of black Angus and Holstein cattle for SNP and CNV discovery , 2011, BMC Genomics.

[13]  K. Stafford,et al.  Effects of local anesthetic and a nonsteroidal antiinflammatory drug on pain responses of dairy calves to hot-iron dehorning. , 2009, Journal of dairy science.

[14]  John A. Basarab,et al.  The use of infrared thermography as an early indicator of bovine respiratory disease complex in calves , 2007, Research in Veterinary Science.

[15]  M. Galyean,et al.  BOARD-INVITED REVIEW: Recent advances in management of highly stressed, newly received feedlot cattle , 2007, Journal of animal science.

[16]  James R. Webster,et al.  Infrared thermography as a non-invasive tool to study animal welfare , 2005, Animal Welfare.

[17]  P. Thompson,et al.  Use of treatment records and lung lesion scoring to estimate the effect of respiratory disease on growth during early and late finishing periods in South African feedlot cattle. , 2006, Journal of animal science.

[18]  R. Skipper,et al.  Canadian Council on Animal Care in Science , 2012 .

[19]  Paul S. Morley,et al.  Thermographic Eye Temperature as an Index to Body Temperature in Ponies , 2011 .

[20]  L. Reeve-johnson.  Relationships between clinical and pathological signs of disease in calves infected with Mannheimia (Pasteurella) haemolytica type A1 , 2001, Veterinary Record.

[21]  Nathalie Bareille,et al.  Early detection of bovine respiratory disease in young bulls using reticulo-rumen temperature boluses. , 2011, Veterinary journal.

[22]  Allan L. Schaefer,et al.  Early Detection and Prediction of Infection using Infrared Thermography , 2004, Recent trends in Management and Commerce.

[23]  K. Schwartzkopf-Genswein,et al.  Achieving pain control for routine management procedures in North American beef cattle , 2012 .