Genetic selection modulates feeding behavior of group-housed pigs exposed to daily cyclic high ambient temperatures

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorInstitut Agro-
Autor(es): dc.contributorUniversidade Federal de Viçosa (UFV)-
Autor(es): dc.contributorUniversidade Federal do Rio Grande do Sul-
Autor(es): dc.creatorFraga, Alícia Zem-
Autor(es): dc.creatorHauschild, Luciano-
Autor(es): dc.creatorCampos, Paulo Henrique Reis Furtado-
Autor(es): dc.creatorValk, Marcio-
Autor(es): dc.creatorBello, Débora Zava-
Autor(es): dc.creatorKipper, Marcos-
Autor(es): dc.creatorAndretta, Ines-
Data de aceite: dc.date.accessioned2025-08-21T20:11:20Z-
Data de disponibilização: dc.date.available2025-08-21T20:11:20Z-
Data de envio: dc.date.issued2022-05-01-
Data de envio: dc.date.issued2022-05-01-
Data de envio: dc.date.issued2021-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1371/journal.pone.0258904-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/234047-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/234047-
Descrição: dc.descriptionThis study was conducted to evaluate the effect of genetic selection (Lines A and B; Line A pigs have a greater proportion of Pietrain genes than those from Line B and therefore, selected for improved lean tissue accretion) on the feeding behavior of group-housed pigs exposed to daily cyclic high ambient temperatures. Feeding behavior of 78 barrows housed together in a single room was recorded in real time by five automatic feeders. The feeders registered each visit of each pig (day, hour, min, and second) and the amount of feed requested. Daily cyclic high ambient temperature was induced exposing pigs at 22C from 18.00 to 10.00 h and 30C from 10.01 to 17.59 h. From this temperature variation, day-period was divided into: 22C(06-10h), from 6.00 to 10.00 h; 30C(10-18h), from 10.01 to 17.59 h; and 22C(18-06h), from 18.00 to 5.59 h. Meal criteria was estimated based on the probability of animals starting a new feeding event within the next minute since the last visit (Pstart). After defining the meal criteria, the number of meals (n), feed intake rate (g/min), feed intake (g/meal), feeder occupancy (min/meal), and interval between meals (min) of each animal were calculated. Greatest probability of starting to feed was observed at 22C(06-10h), followed by 30C(10-18h) and then 22C(18-06h). Regardless of time period, pigs from line A had greater feed intake rate and lower feed intake, feed occupancy per meal and probability of starting a meal when compared with line B pigs. Only line A pigs had greater feed intake and feeder occupancy per meal at 22C(18-06h) than remainder of the day. This indicates that pig feeding pattern is strongly related to the circadian rhythm. However, the genetic selection for improved lean tissue accretion may modulate pigs feeding behavior under daily cyclic high ambient temperatures.-
Descrição: dc.descriptionDepartment of Animal Science School of Agricultural and Veterinarian Sciences São Paulo State University, São Paulo-
Descrição: dc.descriptionPEGASE INRAE Institut Agro, Saint Gilles-
Descrição: dc.descriptionDepartment of Animal Science Universidade Federal de Viçosa, Minas Gerais, Viçosa-
Descrição: dc.descriptionDepartment of Statistics Universidade Federal do Rio Grande do Sul, Rio Grande do Sul-
Descrição: dc.descriptionDepartment of Animal Science Universidade Federal do Rio Grande do Sul, Rio Grande do Sul-
Descrição: dc.descriptionDepartment of Animal Science School of Agricultural and Veterinarian Sciences São Paulo State University, São Paulo-
Idioma: dc.languageen-
Relação: dc.relationPLoS ONE-
???dc.source???: dc.sourceScopus-
Título: dc.titleGenetic selection modulates feeding behavior of group-housed pigs exposed to daily cyclic high ambient temperatures-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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