Transepidermal water loss in ewes submitted to sun exposure
The work aims to determine thermolysis capacity by losses by sweating using trans epidermal water loss values (TEWL) and by tachypnea. Fifty six Santa Ines ewes were divided in facilities having covered area with a cement floor and ï¬ber cement roof panels (4 m high, 8 x 10 m) and uncovered area wi...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Instituto de Zootecnia
2015-02-01
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| Series: | Boletim de Indústria Animal |
| Subjects: | |
| Online Access: | http://ojs.iz.sp.gov.br/index.php/bia/article/view/390 |
| _version_ | 1797749665439940608 |
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| author | Cristiane Gonçalves Titto Ana Carina Alves Pereira de Mira Geraldo Raquel Ferrari Calviello Reíssa Alves Vilela Lina Fernanda Polido Rodrigues Thays Mayra da Cunha Leme Fábio Luís Henrique Evaldo Antonio Lencioni Titto Alfredo Manuel Franco Pereira |
| author_facet | Cristiane Gonçalves Titto Ana Carina Alves Pereira de Mira Geraldo Raquel Ferrari Calviello Reíssa Alves Vilela Lina Fernanda Polido Rodrigues Thays Mayra da Cunha Leme Fábio Luís Henrique Evaldo Antonio Lencioni Titto Alfredo Manuel Franco Pereira |
| author_sort | Cristiane Gonçalves Titto |
| collection | DOAJ |
| description | The work aims to determine thermolysis capacity by losses by sweating using trans epidermal water loss values (TEWL) and by tachypnea. Fifty six Santa Ines ewes were divided in facilities having covered area with a cement floor and ï¬ber cement roof panels (4 m high, 8 x 10 m) and uncovered area with hard dirt floor (15 x 15 m). Thermolysis capacity was evaluated using heat stress challenge in three consecutive days, in which animals stayed under the shade, from 08:00 to 13:00 h, when the ï¬rst sample was taken (T0: 08:00 h). From 13:00 to 14:00 h, they stayed in sunny place for 1 h, and the second sample was taken (T1: 14:00h). Then, animals went back to the shade, where they stayed for more 45 minutes (14:00–14:45 h), and the third sample was taken (T2: 14:45h). TEWL with a VapoMeter (Delfin, Finland), respiratory rate (RR) by count of movements per minute and rectal temperature (RT) with a digital thermometer were collected in all sampling times. During the heat challenge, air temperature and relative humidity were measured under the shade and in the sun (Table 1). Variance analysis with multiple comparisons of means by Tukey test at 5% was performed. The study was approved by Ethics Committee of USP (12.1.755.74.9). The highest values of TEWL, RR and RT were found shortly after 1 hour of sunshine (P<0.05, Table 2). Despite TEWL and RR decreased after 45 minutes under the shade, RT did not decrease significantly during this period. This can be explained by the lower thermal inertia for body heat loss, with 17.4% decrease in RR and 0.21% in RT. TEWL can be used to evaluate thermolysis capacity of ewes in addition to RR. |
| first_indexed | 2024-03-12T16:21:50Z |
| format | Article |
| id | doaj.art-c96e71da958444d69ec56bb6a95d76c7 |
| institution | Directory Open Access Journal |
| issn | 1981-4100 |
| language | English |
| last_indexed | 2024-03-12T16:21:50Z |
| publishDate | 2015-02-01 |
| publisher | Instituto de Zootecnia |
| record_format | Article |
| series | Boletim de Indústria Animal |
| spelling | doaj.art-c96e71da958444d69ec56bb6a95d76c72023-08-08T23:03:47ZengInstituto de ZootecniaBoletim de Indústria Animal1981-41002015-02-0171Transepidermal water loss in ewes submitted to sun exposureCristiane Gonçalves TittoAna Carina Alves Pereira de Mira GeraldoRaquel Ferrari CalvielloReíssa Alves VilelaLina Fernanda Polido RodriguesThays Mayra da Cunha LemeFábio Luís HenriqueEvaldo Antonio Lencioni TittoAlfredo Manuel Franco PereiraThe work aims to determine thermolysis capacity by losses by sweating using trans epidermal water loss values (TEWL) and by tachypnea. Fifty six Santa Ines ewes were divided in facilities having covered area with a cement floor and ï¬ber cement roof panels (4 m high, 8 x 10 m) and uncovered area with hard dirt floor (15 x 15 m). Thermolysis capacity was evaluated using heat stress challenge in three consecutive days, in which animals stayed under the shade, from 08:00 to 13:00 h, when the ï¬rst sample was taken (T0: 08:00 h). From 13:00 to 14:00 h, they stayed in sunny place for 1 h, and the second sample was taken (T1: 14:00h). Then, animals went back to the shade, where they stayed for more 45 minutes (14:00–14:45 h), and the third sample was taken (T2: 14:45h). TEWL with a VapoMeter (Delfin, Finland), respiratory rate (RR) by count of movements per minute and rectal temperature (RT) with a digital thermometer were collected in all sampling times. During the heat challenge, air temperature and relative humidity were measured under the shade and in the sun (Table 1). Variance analysis with multiple comparisons of means by Tukey test at 5% was performed. The study was approved by Ethics Committee of USP (12.1.755.74.9). The highest values of TEWL, RR and RT were found shortly after 1 hour of sunshine (P<0.05, Table 2). Despite TEWL and RR decreased after 45 minutes under the shade, RT did not decrease significantly during this period. This can be explained by the lower thermal inertia for body heat loss, with 17.4% decrease in RR and 0.21% in RT. TEWL can be used to evaluate thermolysis capacity of ewes in addition to RR.http://ojs.iz.sp.gov.br/index.php/bia/article/view/390sheepthermolysis capacityVapoMeter |
| spellingShingle | Cristiane Gonçalves Titto Ana Carina Alves Pereira de Mira Geraldo Raquel Ferrari Calviello Reíssa Alves Vilela Lina Fernanda Polido Rodrigues Thays Mayra da Cunha Leme Fábio Luís Henrique Evaldo Antonio Lencioni Titto Alfredo Manuel Franco Pereira Transepidermal water loss in ewes submitted to sun exposure Boletim de Indústria Animal sheep thermolysis capacity VapoMeter |
| title | Transepidermal water loss in ewes submitted to sun exposure |
| title_full | Transepidermal water loss in ewes submitted to sun exposure |
| title_fullStr | Transepidermal water loss in ewes submitted to sun exposure |
| title_full_unstemmed | Transepidermal water loss in ewes submitted to sun exposure |
| title_short | Transepidermal water loss in ewes submitted to sun exposure |
| title_sort | transepidermal water loss in ewes submitted to sun exposure |
| topic | sheep thermolysis capacity VapoMeter |
| url | http://ojs.iz.sp.gov.br/index.php/bia/article/view/390 |
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