Utilização da Termografia de Infravermelho na Medicina Veterinária e na Produção Animal

Roberto, João Vinícius Barbosa; Souza, Bonifácio Benício de

doi:10.14269/2318-1265/jabb.v2n3p73-84

Cited by 30 publications

(16 citation statements)

References 32 publications

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“…The test results are analyzed according to viscosity grade, with five scores, namely: negative, trace, +, ++ and +++. Infrared thermography can be defined as a non-invasive technique for perceiving the surface temperature of a body, since all bodies with temperature above the absolute zero (0 K) emit thermal radiation (Roberto & Souza, 2014). Among some studies that have assessed udder temperature variation in lactating cows, the one by Digiovani et al (2016) stands out for using thermal images as a diagnosis tool to detect subclinical mastitis, finding differences between the temperature of healthy udders and of those with subclinical mastitis.…”

Section: Introductionmentioning

confidence: 99%

Spatial Dependence of Udder Surface Temperature Variation in Dairy Cows with Healthy Status and Mastitis

Silva

Pandorfi

Almeida

et al. 2019

Rev. bras. saúde prod. anim.

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The objective of this research was to assess the spatial variability pattern concerning udder surface temperature in dairy cows that were healthy and in those with mastitis. A total of 24 animals were selected - eight healthy, eight with subclinical mastitis, and eight with clinical mastitis. Images were taken with a Flir i60 thermographic camera - resolution of 0.01°C, focal length of 1.0 m, and emissivity adjusted to 0.98 - between 05:00 and 07:00, totaling 96 images, three per animal, of the front and rear, right and left mammary quarters. Analyses were run through geostatistics, with semivariogram adjustment to validate the theoretical model and build kriging maps. The average surface temperature of the mammary quarters with positive classification for subclinical mastitis stood between 33.2 ± 0.67ºC and 34.64± 1.07ºC; for negative quarters, values ranged from 29.3 ± 1.78ºC to 32.24 ± 0.62ºC. The udder surface temperatures of healthy animals were lower than those of animals with subclinical mastitis (29.3ºC ± 1.78 and 31.58ºC ± 0.62). The udder surface temperature of animals with clinical mastitis was higher, between 34.0 and 37.5°C, compared to the other clinical statuses. The scale adopted for image pattern analysis successfully identified the spatial dependence of udder surface temperature, which helped standardize diagnostic procedures for healthy animals, and for those with subclinical and clinical mastitis, by means of geostatistics.

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Section: Introductionmentioning

confidence: 99%

Spatial Dependence of Udder Surface Temperature Variation in Dairy Cows with Healthy Status and Mastitis

Silva

Pandorfi

Almeida

et al. 2019

Rev. bras. saúde prod. anim.

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“…A termografia de infravermelho não é um exame invasivo, com acurácia para mensurar a temperatura da superfície da pele [1,16,18,20,23,24], usada no auxílio diagnóstico em rebanhos [19]. A radiação térmica emitida pelo animal está relacionada com a perfusão sanguínea e a taxa de metabolismo, sendo captada pela câmera termográfica [19,20].…”

Section: Introductionunclassified

“…A radiação térmica emitida pelo animal está relacionada com a perfusão sanguínea e a taxa de metabolismo, sendo captada pela câmera termográfica [19,20]. O exame de infravermelho detecta mudanças da temperatura da área examinada, registrado em termogramas [13,17,18,20].…”

Section: Introductionunclassified

Use of infrared thermography to evaluate the influence of the of Climatic Factors in the Reproduction and Lactation of Dairy Cattle

Chacur

Bastos

Vivian

et al. 2016

Acta Scientiae. Vet.

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Background:The digital infrared imaging thermography is a non-invasive imaging exam of easy performance accurately to measure temperatures of the areas of the animals body. The objective was to study the physiological variations of the surface temperature of the mammary gland, vulva, pelvis, thorax and abdomen with digital infrared imaging thermography in negative dairy cattle with California mastitis test (CMT) in different seasons, and the influence of climatic factors in these temperatures.

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“…Trata-se de uma eficiente ferramenta utilizada na medição não intrusiva de temperaturas na superfície de objetos. Este método é atualmente empregado em diversas áreas, tais como inspeção e controle de qualidade na indústria (CAMPOS et al, 2011), determinação de propriedades termofísicas dos materiais (KNUPP et al, 2012), na inspeção preventiva de edifícios para, por exemplo, detectar infiltrações de água (ALTOÉ & OLIVEIRA FILHO, 2012) e até mesmo no campo da medicina veterinária e produção animal (ROBERTO & SOUZA, 2014).…”

Section: Introductionunclassified

Estimativa de Fluxo Térmico com Variação Temporal Empregando Imagens Termográficas e o Método de Luus-Jaakola

Blaudt

Sanches

Knupp

et al. 2018

Cereus

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RESUMOEste trabalho tem por objetivo a análise da estimativa da variação temporal do fluxo de calor em uma placa termicamente fina a partir de medições de temperatura obtidas via termografia por infravermelho. O problema direto foi formulado considerando-se uma abordagem por parâmetros concentrados (lumped analysis), enquanto o problema inverso foi formulado implicitamente, com a definição de uma função objetivo a ser minimizada. O procedimento de minimização foi então realizado com o algoritmo de Luus-Jaakola. Foram gerados resultados com dados experimentais simulados, com a adição de ruído, para verificação do código. Posteriormente, alguns resultados envolvendo dados experimentais reais foram também empregados. Dos resultados obtidos conclui-se que o modelo empregado descreve satisfatoriamente o problema, dentro das incertezas de cálculo para os parâmetros do modelo e das incertezas dos dados experimentais. Palavras-chave: Fluxo térmico, Condução de Calor, Problemas Inversos, Regularização ABSTRACTThis work addresses the boundary heat flux estimation in thermally thin plates employing temperature measurements obtained via infrared thermography. The direct problem was formulated considering a lumped analysis, while the inverse problem was formulated implicitly, with the definition of an objective function that needs to be minimized. The minimization procedure for this function was then performed with the Luus-Jaakola algorithm. Results were generated with simulated experimental data, with the addition of noise, to verify the code. Once verified, the methodology was applied in a problem involving real experimental data. From the results obtained, it can be concluded that the model adequately simulates the physical problem, within the uncertainties of calculation for the model parameters and the uncertainties regarding experimental data.

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Utilização da Termografia de Infravermelho na Medicina Veterinária e na Produção Animal

Cited by 30 publications

References 32 publications

Spatial Dependence of Udder Surface Temperature Variation in Dairy Cows with Healthy Status and Mastitis

Spatial Dependence of Udder Surface Temperature Variation in Dairy Cows with Healthy Status and Mastitis

Use of infrared thermography to evaluate the influence of the of Climatic Factors in the Reproduction and Lactation of Dairy Cattle

Estimativa de Fluxo Térmico com Variação Temporal Empregando Imagens Termográficas e o Método de Luus-Jaakola

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