Physical characteristics of the hair coat of sows raised in free-range systems in a tropical environment
The aim of this study was to investigate the hair coat characteristics of sows raised in a free-range system in a tropical climate and assess associations with effective radiative properties and thermal conductivity. Bristles were collected from December 2017 to April 2018 and evaluated for diamete...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Editora da Universidade Estadual de Maringá (Eduem)
2024-04-01
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| Series: | Acta Scientiarum: Animal Sciences |
| Subjects: | |
| Online Access: | https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/63533 |
| _version_ | 1797222031964504064 |
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| author | Sheila Tavares Nascimento João Victor do Nascimento Mós Luci Sayori Murata Vinicius Machado dos Santos Antonio José Steidle Neto Evandro Menezes de Oliveira Alex Sandro Campos Maia Bruno Emanoel Teixeira Raquel Parizotto Luana Freitas Silva |
| author_facet | Sheila Tavares Nascimento João Victor do Nascimento Mós Luci Sayori Murata Vinicius Machado dos Santos Antonio José Steidle Neto Evandro Menezes de Oliveira Alex Sandro Campos Maia Bruno Emanoel Teixeira Raquel Parizotto Luana Freitas Silva |
| author_sort | Sheila Tavares Nascimento |
| collection | DOAJ |
| description |
The aim of this study was to investigate the hair coat characteristics of sows raised in a free-range system in a tropical climate and assess associations with effective radiative properties and thermal conductivity. Bristles were collected from December 2017 to April 2018 and evaluated for diameter (mm), length (mm), and density (bristles per cm2). From these data, the effective thermal conductivity, absorptivity, transmissivity, and reflectivity of the hair coat were determined. Sows were separated into four groups according to skin pigmentation and color parameters. The environment was characterized with regard to average air temperature (°C), relative humidity (%), and shortwave radiation (W m-2). The data were analyzed by repeated measures analysis. Bristle length (33 mm) and density (10 bristles cm-2) were lower in summer than in colder months (48 mm and 20 bristles cm-2, respectively). Effective absorptivity was higher and transmittance was lower in more pigmented sows, demonstrating a connection with protection against solar radiation. Therefore, the combination of a pigmented and dense coat seems to be ideal for pigs reared in free-range systems.
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| first_indexed | 2024-04-24T13:14:52Z |
| format | Article |
| id | doaj.art-4548c4caeda246da88c33057669cc502 |
| institution | Directory Open Access Journal |
| issn | 1806-2636 1807-8672 |
| language | English |
| last_indexed | 2024-04-24T13:14:52Z |
| publishDate | 2024-04-01 |
| publisher | Editora da Universidade Estadual de Maringá (Eduem) |
| record_format | Article |
| series | Acta Scientiarum: Animal Sciences |
| spelling | doaj.art-4548c4caeda246da88c33057669cc5022024-04-04T18:05:07ZengEditora da Universidade Estadual de Maringá (Eduem)Acta Scientiarum: Animal Sciences1806-26361807-86722024-04-0146110.4025/actascianimsci.v46i1.63533Physical characteristics of the hair coat of sows raised in free-range systems in a tropical environmentSheila Tavares Nascimento0João Victor do Nascimento Mós1Luci Sayori Murata2Vinicius Machado dos Santos3Antonio José Steidle Neto4Evandro Menezes de Oliveira5Alex Sandro Campos Maia6Bruno Emanoel Teixeira7Raquel Parizotto8Luana Freitas Silva9Universidade Estadual de MaringáUniversidade de BrasíliaUniversidade de BrasíliaInstituto Federal de BrasíliaUniversidade Federal de São João Del-ReiUniversidade de BrasíliaUniversidade Estadual de São PauloUniversidade de BrasíliaUniversidade de BrasíliaUniversidade de Brasília The aim of this study was to investigate the hair coat characteristics of sows raised in a free-range system in a tropical climate and assess associations with effective radiative properties and thermal conductivity. Bristles were collected from December 2017 to April 2018 and evaluated for diameter (mm), length (mm), and density (bristles per cm2). From these data, the effective thermal conductivity, absorptivity, transmissivity, and reflectivity of the hair coat were determined. Sows were separated into four groups according to skin pigmentation and color parameters. The environment was characterized with regard to average air temperature (°C), relative humidity (%), and shortwave radiation (W m-2). The data were analyzed by repeated measures analysis. Bristle length (33 mm) and density (10 bristles cm-2) were lower in summer than in colder months (48 mm and 20 bristles cm-2, respectively). Effective absorptivity was higher and transmittance was lower in more pigmented sows, demonstrating a connection with protection against solar radiation. Therefore, the combination of a pigmented and dense coat seems to be ideal for pigs reared in free-range systems. https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/63533effective properties; outdoor systems; hair coat; tropical climate; swine. |
| spellingShingle | Sheila Tavares Nascimento João Victor do Nascimento Mós Luci Sayori Murata Vinicius Machado dos Santos Antonio José Steidle Neto Evandro Menezes de Oliveira Alex Sandro Campos Maia Bruno Emanoel Teixeira Raquel Parizotto Luana Freitas Silva Physical characteristics of the hair coat of sows raised in free-range systems in a tropical environment Acta Scientiarum: Animal Sciences effective properties; outdoor systems; hair coat; tropical climate; swine. |
| title | Physical characteristics of the hair coat of sows raised in free-range systems in a tropical environment |
| title_full | Physical characteristics of the hair coat of sows raised in free-range systems in a tropical environment |
| title_fullStr | Physical characteristics of the hair coat of sows raised in free-range systems in a tropical environment |
| title_full_unstemmed | Physical characteristics of the hair coat of sows raised in free-range systems in a tropical environment |
| title_short | Physical characteristics of the hair coat of sows raised in free-range systems in a tropical environment |
| title_sort | physical characteristics of the hair coat of sows raised in free range systems in a tropical environment |
| topic | effective properties; outdoor systems; hair coat; tropical climate; swine. |
| url | https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/63533 |
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