Infrared Thermography to Assess Thermoregulatory Reactions of Female Buffaloes in a Humid Tropical Environment
This study employed infrared thermography to assess the thermoregulatory responses of female buffaloes reared in a hot and humid climate as a function of variations in time and the thermal environment, and to correlate rectal temperature with that of different body areas. The trial was carried out a...
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| Language: | English |
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Frontiers Media S.A.
2020-05-01
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| Series: | Frontiers in Veterinary Science |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fvets.2020.00180/full |
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| author | Carolina Carvalho Brcko Jamile Andréa Rodrigues da Silva Lucieta Guerreiro Martorano Reíssa Alves Vilela Benjamim de Souza Nahúm André Guimarães Maciele Silva Antônio Vinícius Corrêa Barbosa Andréia Santana Bezerra José de Brito Lourenço Júnior |
| author_facet | Carolina Carvalho Brcko Jamile Andréa Rodrigues da Silva Lucieta Guerreiro Martorano Reíssa Alves Vilela Benjamim de Souza Nahúm André Guimarães Maciele Silva Antônio Vinícius Corrêa Barbosa Andréia Santana Bezerra José de Brito Lourenço Júnior |
| author_sort | Carolina Carvalho Brcko |
| collection | DOAJ |
| description | This study employed infrared thermography to assess the thermoregulatory responses of female buffaloes reared in a hot and humid climate as a function of variations in time and the thermal environment, and to correlate rectal temperature with that of different body areas. The trial was carried out at Embrapa Eastern Amazon (01°26'S and 48°24'W) in Belém, PA, Brazil. Twenty-four female buffaloes fed exclusively on pasture and exposed to the sun throughout the day in an open area were used. The animals were taken back to the corral at 6 A.M., 9 A.M., 12 P.M., 3 P.M., 6 P.M., and 9 P.M. for measurements of rectal temperature (RT), respiratory rate (RR), and body surface temperature (BST) using infrared thermography (IRT). Data on air temperature (AT), relative air humidity (RH), wind velocity (WV), and solar radiation (SR) were also recorded. A quadratic effect of AT, RH, SR, RR, and RT (P < 0.01) was found as a function of measurement time. Between 12 P.M. and 3 P.M., AT, SR, RR, and RT values were the highest, while RH values were the lowest (P < 0.05). WV was the highest between 12 P.M. and 9 P.M. A difference was found in RR and RT among the day's times, with the highest values at 12 P.M. and 3 P.M. (P <0.05). The IRTs have a quadratic effect as a function of day's times, with the highest levels between 12 P.M. and 6 P.M. and a reduction at 9 P.M. All IRTs are correlated with the physiological variables RR and RT, except for the IRT of the side of the back, which is not correlated with RT. The IRTs of the eye and cheek are correlated with RT (P < 0.01) and with RR (P < 0.05). IRT was efficient in evaluating the thermal stress of female buffaloes in hot and humid climates, and the technique can be used to evaluate the body temperature of these animals, since the RT was positively correlated with the temperature of the eye and cheek. |
| first_indexed | 2024-12-20T20:03:41Z |
| format | Article |
| id | doaj.art-e8805533ce664a51a6a373f69a503ab1 |
| institution | Directory Open Access Journal |
| issn | 2297-1769 |
| language | English |
| last_indexed | 2024-12-20T20:03:41Z |
| publishDate | 2020-05-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Veterinary Science |
| spelling | doaj.art-e8805533ce664a51a6a373f69a503ab12022-12-21T19:28:00ZengFrontiers Media S.A.Frontiers in Veterinary Science2297-17692020-05-01710.3389/fvets.2020.00180518047Infrared Thermography to Assess Thermoregulatory Reactions of Female Buffaloes in a Humid Tropical EnvironmentCarolina Carvalho Brcko0Jamile Andréa Rodrigues da Silva1Lucieta Guerreiro Martorano2Reíssa Alves Vilela3Benjamim de Souza Nahúm4André Guimarães Maciele Silva5Antônio Vinícius Corrêa Barbosa6Andréia Santana Bezerra7José de Brito Lourenço Júnior8Institute of Veterinary Medicine, Federal University of Pará, Castanhal, BrazilInstitute of Animal Health and Production, Federal Rural University of the Amazon, Belém, BrazilEmbrapa Eastern Amazon, Belém, BrazilInstitute of Veterinary Medicine, Federal University of Pará, Castanhal, BrazilEmbrapa Eastern Amazon, Belém, BrazilInstitute of Veterinary Medicine, Federal University of Pará, Castanhal, BrazilInstitute of Animal Health and Production, Federal Rural University of the Amazon, Belém, BrazilInstitute of Veterinary Medicine, Federal University of Pará, Castanhal, BrazilInstitute of Veterinary Medicine, Federal University of Pará, Castanhal, BrazilThis study employed infrared thermography to assess the thermoregulatory responses of female buffaloes reared in a hot and humid climate as a function of variations in time and the thermal environment, and to correlate rectal temperature with that of different body areas. The trial was carried out at Embrapa Eastern Amazon (01°26'S and 48°24'W) in Belém, PA, Brazil. Twenty-four female buffaloes fed exclusively on pasture and exposed to the sun throughout the day in an open area were used. The animals were taken back to the corral at 6 A.M., 9 A.M., 12 P.M., 3 P.M., 6 P.M., and 9 P.M. for measurements of rectal temperature (RT), respiratory rate (RR), and body surface temperature (BST) using infrared thermography (IRT). Data on air temperature (AT), relative air humidity (RH), wind velocity (WV), and solar radiation (SR) were also recorded. A quadratic effect of AT, RH, SR, RR, and RT (P < 0.01) was found as a function of measurement time. Between 12 P.M. and 3 P.M., AT, SR, RR, and RT values were the highest, while RH values were the lowest (P < 0.05). WV was the highest between 12 P.M. and 9 P.M. A difference was found in RR and RT among the day's times, with the highest values at 12 P.M. and 3 P.M. (P <0.05). The IRTs have a quadratic effect as a function of day's times, with the highest levels between 12 P.M. and 6 P.M. and a reduction at 9 P.M. All IRTs are correlated with the physiological variables RR and RT, except for the IRT of the side of the back, which is not correlated with RT. The IRTs of the eye and cheek are correlated with RT (P < 0.01) and with RR (P < 0.05). IRT was efficient in evaluating the thermal stress of female buffaloes in hot and humid climates, and the technique can be used to evaluate the body temperature of these animals, since the RT was positively correlated with the temperature of the eye and cheek.https://www.frontiersin.org/article/10.3389/fvets.2020.00180/fullbuffaloesclimateheatimagesthermoregulation |
| spellingShingle | Carolina Carvalho Brcko Jamile Andréa Rodrigues da Silva Lucieta Guerreiro Martorano Reíssa Alves Vilela Benjamim de Souza Nahúm André Guimarães Maciele Silva Antônio Vinícius Corrêa Barbosa Andréia Santana Bezerra José de Brito Lourenço Júnior Infrared Thermography to Assess Thermoregulatory Reactions of Female Buffaloes in a Humid Tropical Environment Frontiers in Veterinary Science buffaloes climate heat images thermoregulation |
| title | Infrared Thermography to Assess Thermoregulatory Reactions of Female Buffaloes in a Humid Tropical Environment |
| title_full | Infrared Thermography to Assess Thermoregulatory Reactions of Female Buffaloes in a Humid Tropical Environment |
| title_fullStr | Infrared Thermography to Assess Thermoregulatory Reactions of Female Buffaloes in a Humid Tropical Environment |
| title_full_unstemmed | Infrared Thermography to Assess Thermoregulatory Reactions of Female Buffaloes in a Humid Tropical Environment |
| title_short | Infrared Thermography to Assess Thermoregulatory Reactions of Female Buffaloes in a Humid Tropical Environment |
| title_sort | infrared thermography to assess thermoregulatory reactions of female buffaloes in a humid tropical environment |
| topic | buffaloes climate heat images thermoregulation |
| url | https://www.frontiersin.org/article/10.3389/fvets.2020.00180/full |
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