Effects of supplementation frequency on nutritional performance and metabolism of cattle fed low-quality tropical forage

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversity of Vermont-Burlington-
Autor(es): dc.contributorCargill Animal Nutrition-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorCiência e Tecnologia de Roraima-
Autor(es): dc.contributorUniversidade Federal de Viçosa (UFV)-
Autor(es): dc.contributorNatural Resources Institute Finland (Luke)-
Autor(es): dc.creatorSilva, Tadeu E. da-
Autor(es): dc.creatorde Oliveira, Cristhiane V.R.-
Autor(es): dc.creatorRodrigues, Aline N.-
Autor(es): dc.creatorPalma, Málber N.N.-
Autor(es): dc.creatorCamacho, Larissa F.-
Autor(es): dc.creatorRennó, Luciana N.-
Autor(es): dc.creatorFranco, Marcia O.-
Autor(es): dc.creatorDetmann, Edenio-
Data de aceite: dc.date.accessioned2025-08-21T18:43:51Z-
Data de disponibilização: dc.date.available2025-08-21T18:43:51Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-11-30-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.anifeedsci.2024.116117-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/305931-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/305931-
Descrição: dc.descriptionOur objective was to evaluate the nutritional performance and metabolism of cattle fed low-quality tropical grass forage and supplemented at different frequencies. Five rumen and abomasum fistulated Nellore heifers (386 kg body weight) were used in a 5 × 5 Latin square design. The five treatments were: control (without supplementation) and supplementation every 12, 24, 48, and 96 h. The amount of supplement provided was equivalent to 2.5 g/kg of body weight in a daily basis. Overall, supplementation had a positive effect (P<0.01) on voluntary forage intake. However, among the supplemented treatments, a decreasing linear effect (P<0.04) on forage intake was observed as the intervals between supplementations extended. The provision of supplements increased (P<0.02) body N accretion, rumen N balance, and microbial N production in the rumen. However, microbial N production responded quadratically (P<0.04) to the supplementation frequency, reflecting a sharp drop when supplement was provided every 96 h. An interaction between treatments and days of the supplementation cycle was observed for ruminal ammonia N (RAN; P<0.01). The interaction indicated day-to-day variations (P<0.01) when supplementation occurred every 48 or 96 hours. In these cases, RAN concentrations peaked (P<0.05) on supplement provision days. Urinary N excretion (UN) was higher (P<0.01) with the provision of supplements. However, UN showed an interaction effect between treatments and days of the supplementation cycle (P<0.01), where variations across days were only observed for supplementation every 96 hours. In this case, N excretion peaked (P<0.05) the day following supplementation. Infrequent supplementation strategies do not adversely affect the nutritional performance of cattle consuming low-quality tropical forages as long as supplementation intervals do not exceed two days.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)-
Descrição: dc.descriptionInstituto Nacional de Ciência e Tecnologia de Ciência Animal-
Descrição: dc.descriptionDepartment of Animal and Veterinary Sciences University of Vermont-Burlington-
Descrição: dc.descriptionCargill Animal Nutrition, São Paulo-
Descrição: dc.descriptionDepartment of Animal Science São Paulo State University-
Descrição: dc.descriptionInstituto Federal de Educação Ciência e Tecnologia de Roraima Campus Amajari, Roraima-
Descrição: dc.descriptionDepartment of Animal Science Universidade Federal de Viçosa-
Descrição: dc.descriptionNatural Resources Institute Finland (Luke)-
Descrição: dc.descriptionDepartment of Animal Science São Paulo State University-
Idioma: dc.languageen-
Relação: dc.relationAnimal Feed Science and Technology-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectForage intake-
Palavras-chave: dc.subjectNitrogen balance-
Palavras-chave: dc.subjectNitrogen metabolism-
Palavras-chave: dc.subjectRuminal ammonia-
Título: dc.titleEffects of supplementation frequency on nutritional performance and metabolism of cattle fed low-quality tropical forage-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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