Protein supplementation to early lactation dairy cows grazing tropical grass: performance and ruminal metabolism

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorChagas, Lucas Jado-
Autor(es): dc.creatorBatalha, Camila Delveaux Araujo-
Autor(es): dc.creatorDanés, Marina de Arruda Camargo-
Autor(es): dc.creatorSantos Neto, José Maurício-
Autor(es): dc.creatorMacedo, Fernanda Lopes-
Autor(es): dc.creatorMarques, Rodrigo da Silva-
Autor(es): dc.creatorSantos, Flávio Augusto Portela-
Data de aceite: dc.date.accessioned2026-02-09T11:48:05Z-
Data de disponibilização: dc.date.available2026-02-09T11:48:05Z-
Data de envio: dc.date.issued2022-06-13-
Data de envio: dc.date.issued2022-06-13-
Data de envio: dc.date.issued2021-05-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br//handle/1/50209-
Fonte completa do material: dc.identifierhttps://doi.org/10.1111/asj.13564-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1147756-
Descrição: dc.descriptionThis experiment was designed to evaluate the effects of different concentrate crude protein (CP) concentration on performance, metabolism and efficiency of N utilization (ENU) on early-lactation dairy cows grazing intensively managed tropical grass. Thirty cows were used in a ten replicated 3 × 3 Latin square design. The treatments consisted of three levels of concentrate CP: 7.9%, 15.4%, and 20.5% offered at a rate of 1 kg (as-fed basis)/3 kg of milk. The cows fed low and medium CP had negative balance of rumen degradable protein and metabolizable protein. Increasing CP tended to linearly increase DMI, 3.5% FCM and milk casein, and linearly increased the yields of milk fat and protein. Increasing CP linearly increased the intake of N, the concentration of rumen NH3–N, and the losses of N in milk, urine, and feces. Increasing dietary CP linearly increased the molar proportion of butyrate but had no effect on the other rumen VFAs and no effect on microbial yield. In conclusion, feeding a concentrate with 20.5% of CP to early-lactation dairy cows grazing tropical grasses, leading to a 17.8% CP diet, tended to increase DMI, increased the yield of 3.5% FCM and the milk N excretion, and decreased ENU by 32%.-
Idioma: dc.languageen-
Publicador: dc.publisherJohn Wiley & Sons/ Japanese Society of Animal Science-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceAnimal Science Journal-
Palavras-chave: dc.subjectDairy cattle-
Palavras-chave: dc.subjectNitrogen metabolism-
Palavras-chave: dc.subjectTropical grass-
Palavras-chave: dc.subjectBovino leiteiro-
Palavras-chave: dc.subjectNitrogênio - Metabolismo-
Palavras-chave: dc.subjectForrageiras tropicais-
Título: dc.titleProtein supplementation to early lactation dairy cows grazing tropical grass: performance and ruminal metabolism-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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