Estimating amino acid requirements in real-time for precision-fed pigs: The challenge of variability among individuals

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Autor(es): dc.contributorAgriculture and Agri-Food Canada-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorLaval University-
Autor(es): dc.creatorRemus, Aline-
Autor(es): dc.creatorHauschild, Luciano-
Autor(es): dc.creatorLétourneau-Montminy, Marie-Pierre-
Autor(es): dc.creatorPomar, Candido-
Data de aceite: dc.date.accessioned2025-08-21T15:16:49Z-
Data de disponibilização: dc.date.available2025-08-21T15:16:49Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2021-11-30-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3390/ani11123354-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/229940-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/229940-
Descrição: dc.descriptionThis study aimed to measure protein deposition (PD) in pigs fed with daily tailored diets where either dietary lysine (Lys) or threonine (Thr) were provided at independent levels (ignoring an ideal ratio). A total of 95 growing pigs (35 kg body weight (BW)) with electronic ear tags granting them access to automatic feeders were randomly assigned to treatments. The setup was an unbalanced 2 × 5 factorial arrangement with Lys and Thr provided at five levels (i.e., 60%, 80%, 100%, 120%, and 140% of the estimated individual requirements of Lys and Thr), resulting in 25 treatments for 21 days. The observed PD variation to Lys and Thr provisions was large, with Lys and Thr intake explaining only 11% of the variation. Cluster analysis discriminated pigs with low (167 g/d, n = 16), medium (191 g/d, n = 38), and high (213 g/d, n = 37) PD, but with a similar amino acid intake. Differences in PD were associated with differences in nutrient efficiency of utilization. Providing Lys and Thr in a factorial mode, ignoring an ideal ratio, did not decrease the variability in PD. Future research efforts should focus on identifying and investigating the sources of interindividual variability—a necessary step before final recommendations can be made for AA in precision-fed pigs.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionSherbrooke Research and Development Centre Agriculture and Agri-Food Canada-
Descrição: dc.descriptionDepartment of Animal Science School of Agricultural and Veterinarian Sciences (FCAV) University of São Paulo State (UNESP)-
Descrição: dc.descriptionDepartment of Animal Science Faculty of Agriculture and Food Sciences Laval University-
Descrição: dc.descriptionDepartment of Animal Science School of Agricultural and Veterinarian Sciences (FCAV) University of São Paulo State (UNESP)-
Descrição: dc.descriptionCNPq: 132530/2013-9-
Descrição: dc.descriptionFAPESP: 18/15559-7-
Descrição: dc.descriptionFAPESP: 2014/25075-6-
Descrição: dc.descriptionFAPESP: 233118/2014-4-
Idioma: dc.languageen-
Relação: dc.relationAnimals-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectPrecision feeding-
Palavras-chave: dc.subjectPrecision livestock farming-
Palavras-chave: dc.subjectPrecision nutrition-
Título: dc.titleEstimating amino acid requirements in real-time for precision-fed pigs: The challenge of variability among individuals-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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