Comparing the responses of grain fed feedlot cattle under moderate heat load and during subsequent recovery with those of feed restricted thermoneutral counterparts: metabolic hormones

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorQueensland Bioscience Precinct-
Autor(es): dc.contributorThe University of Queensland-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorWijffels, G.-
Autor(es): dc.creatorSullivan, M. L.-
Autor(es): dc.creatorStockwell, S.-
Autor(es): dc.creatorBriscoe, S.-
Autor(es): dc.creatorAnderson, S. T.-
Autor(es): dc.creatorLi, Y.-
Autor(es): dc.creatorde Melo Costa, C. C.-
Autor(es): dc.creatorMcCulloch, R.-
Autor(es): dc.creatorOlm, J. C.W.-
Autor(es): dc.creatorCawdell-Smith, J.-
Autor(es): dc.creatorGaughan, J. B.-
Data de aceite: dc.date.accessioned2025-08-21T17:15:06Z-
Data de disponibilização: dc.date.available2025-08-21T17:15:06Z-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-05-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s00484-023-02464-w-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/247167-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/247167-
Descrição: dc.descriptionWe set out to determine the impact of moderate heat load on the plasma concentrations of a suite of hormones involved in regulating energy metabolism and feed intake. The responses of the thermally challenged (TC) feedlot steers were compared to those of feed restricted thermoneutral (FRTN) steers. Two sequential cohorts of twelve 518 ± 23 kg Black Angus steers on finisher grain ration were housed in climate-controlled rooms (CCR) for 18 days and returned to outdoor pens for 40 days. The TC group was subjected to a diurnal range of 28–35 °C for 7 days (Challenge) but held in thermoneutral conditions beforehand (PreChallenge), and in Recovery (after Challenge). The FRTN group was held in thermoneutral conditions and feed restricted throughout. Blood was collected over the three periods in CCR and two periods in outdoor pens for 40 days (PENS and Late PENS). Plasma concentrations of prolactin, thyroid stimulating hormone, insulin, leptin, adiponectin and thyroxine (T4) were determined during the five periods. Whilst the pituitary hormones were relatively stable, there were differences in plasma leptin, adiponectin and T4 between the two groups during Challenge and Recovery, and occasionally in PENS. The interaction of the plasma hormone concentrations and rumen temperature and DMI were also investigated. Whilst the positive relationship between DMI and leptin was confirmed, we found a strong negative relationship between adiponectin and rumen temperature, and a strong positive relationship between adiponectin and dry matter intake (DMI) in the TC steers only.-
Descrição: dc.descriptionMeat and Livestock Australia-
Descrição: dc.descriptionCSIRO Agriculture and Food Queensland Bioscience Precinct-
Descrição: dc.descriptionSchool of Agriculture and Food The University of Queensland-
Descrição: dc.descriptionSchool of Biomedical Sciences The University of Queensland-
Descrição: dc.descriptionFaculty of Agricultural and Veterinary Sciences Universidade Estadual Paulista-
Descrição: dc.descriptionSchool of Veterinary Science The University of Queensland-
Descrição: dc.descriptionFaculty of Agricultural and Veterinary Sciences Universidade Estadual Paulista-
Descrição: dc.descriptionMeat and Livestock Australia: Heat Stress Nutrition Project B.FLT.0157-
Formato: dc.format897-911-
Idioma: dc.languageen-
Relação: dc.relationInternational Journal of Biometeorology-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAdiponectin-
Palavras-chave: dc.subjectCattle-
Palavras-chave: dc.subjectHormones-
Palavras-chave: dc.subjectHyperthermia-
Palavras-chave: dc.subjectInsulin-
Palavras-chave: dc.subjectLeptin-
Palavras-chave: dc.subjectProlactin-
Título: dc.titleComparing the responses of grain fed feedlot cattle under moderate heat load and during subsequent recovery with those of feed restricted thermoneutral counterparts: metabolic hormones-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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