Relationship between different sources of non-protein nitrogen and supplementation times on performance and metabolism of grazing Nellore cattle during the dry season

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorAgência Paulista de Tecnologia dos Agronegócios (APTA)-
Autor(es): dc.contributorAlltech-
Autor(es): dc.contributorInc.-
Autor(es): dc.creatorMota, Verônica A. C.-
Autor(es): dc.creatorPrados, Laura F.-
Autor(es): dc.creatorNascimento, Keuven S.-
Autor(es): dc.creatorFernandes, Rodolfo. M.-
Autor(es): dc.creatorSilva, Luiz F. Costa e-
Autor(es): dc.creatorHolder, Vaughn B.-
Autor(es): dc.creatorPettigrew, James E.-
Autor(es): dc.creatorResende, Flávio D.-
Autor(es): dc.creatorSiqueira, Gustavo R.-
Data de aceite: dc.date.accessioned2025-08-21T16:45:31Z-
Data de disponibilização: dc.date.available2025-08-21T16:45:31Z-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2022-11-30-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s11250-022-03383-5-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/246311-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/246311-
Descrição: dc.descriptionTwo experiments were conducted to evaluate the effect of supplementation with two sources of non-protein nitrogen at different feeding times on the performance, ingestive behavior, and rumen metabolism of growing Nellore bulls during the dry season. Exp. 1: One hundred and twenty Nellore bulls, weighing 206 ± 39 kg of initial body weight (BW) and 12 months of age, were divided into 20 paddocks, and they were used in randomized block design in a 2 × 2 factorial arrangement to evaluate performance and ingestive behavior. Exp. 2: 12 rumen cannulated animals with 509 ± 59 BW, divided into 4 paddocks, were used in a triple Latin square 4 × 4 in a 2 × 2 factorial arrangement to evaluate metabolism. The factors were 2 non-protein nitrogen sources (urea or slow-release urea) and 2 feeding times (07:00 or 13:00 at 4 g/kg BW of supplement). There was no influence of non-protein sources, supplementation time, or their interaction on the grazing time or the trough time during daytime, nighttime, or total (P ≥ 0.16). There were no interactions or factor effects on ADG (P ≥ 0.45) or final body weight (P ≥ 0.39). There was an interaction between supplementation time and collection time (P < 0.01) on ruminal pH. Animals supplemented in the morning had greater total SCFA at 18 h after supplementation (P = 0.03). The supplementation time and the non-protein nitrogen sources did not alter the ingestive behavior or animal performance of young Nellore cattle.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionFaculdade de Ciências Agrárias E Veterinárias Universidade Estadual Paulista “Júlio de Mesquita Filho,”, Via de Acesso Professor Paulo Donato Castellane s/n-
Descrição: dc.descriptionAgência Paulista de Tecnologia dos Agronegócios (APTA), Avenida Rui Barbosa, Caixa Postal 35-
Descrição: dc.descriptionAlltech, PR-
Descrição: dc.descriptionAlltech-
Descrição: dc.descriptionPettigrew Research Services Inc.-
Descrição: dc.descriptionFaculdade de Ciências Agrárias E Veterinárias Universidade Estadual Paulista “Júlio de Mesquita Filho,”, Via de Acesso Professor Paulo Donato Castellane s/n-
Descrição: dc.descriptionFAPESP: 2016/05131-4-
Descrição: dc.descriptionFAPESP: 2017/50339-5-
Descrição: dc.descriptionFAPESP: 2018/20176-0-
Idioma: dc.languageen-
Relação: dc.relationTropical Animal Health and Production-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectCoating materials-
Palavras-chave: dc.subjectGrowing phase-
Palavras-chave: dc.subjectNitrogen metabolism-
Palavras-chave: dc.subjectRumen degradable protein-
Palavras-chave: dc.subjectSlow-release urea-
Título: dc.titleRelationship between different sources of non-protein nitrogen and supplementation times on performance and metabolism of grazing Nellore cattle during the dry season-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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