Physical characteristics of the hair coat of sows raised in free-range systems in a tropical environment

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dc.creatorSheila Tavares Nascimento
dc.creatorJoão Victor do Nascimento Mós
dc.creatorLuci Sayori Murata
dc.creatorVinicius Machado dos Santos
dc.creatorAntonio José Steidle
dc.creatorEvandro Menezes de Oliveira
dc.creatorAlex Sandro Campos Maia
dc.creatorBruno Emanoel Teixeira
dc.creatorRaquel Parizotto
dc.creatorLuana Freitas Silva
dc.date2024
dc.date.accessioned2026-07-07T03:57:49Z
dc.descriptionThe 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.
dc.formatapplication/pdf
dc.identifier1806-2636
dc.identifierhttps://www.redalyc.org/articulo.oa?id=303179699046
dc.identifierhttps://www.redalyc.org/journal/3031/303179699046/
dc.identifierhttps://www.redalyc.org/journal/3031/303179699046/html/
dc.identifierhttps://www.redalyc.org/journal/3031/303179699046/303179699046.epub
dc.identifierhttps://www.redalyc.org/journal/3031/303179699046/movil
dc.identifier10.4025/actascianimsci.v46i1.63533
dc.identifier.urihttp://hdl.handle.net/123456789/448744
dc.languageen
dc.publisherUniversidade Estadual de Maringá
dc.relationhttp://www.redalyc.org/revista.oa?id=3031
dc.rightsActa Scientiarum. Animal Sciences
dc.sourceActa Scientiarum. Animal Sciences (Brasil) Vol.46
dc.subjectAgrociencias
dc.titlePhysical characteristics of the hair coat of sows raised in free-range systems in a tropical environment
dc.typeartículo científico

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Acta Scientiarum. Animal Sciences - Universidade Estadual de Maringá