Data/hora: 05/06/2024 10:13:25

Biblioteca(s): | Embrapa Agrobiologia.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | A - 2
Data corrente: | 01/06/2020
Data da última atualização: | 01/06/2020
Autoria: | SALGADO, L. C.; SOLORIO-SANCHEZ, F.; RAMIREZ-AVILÉS; ALVES, B. J. R.; KU-VERA, J.; URQUIAGA, S.; BODDEY, R. M.
Afiliação: | Lucero Sarabia-Salgado, UFRRJ; Francisco Solorio-Sánchez, Autonomous University of Yucatán, México; Luis Ramírez-Avilés, Autonomous University of Yucatán, México; BRUNO JOSE RODRIGUES ALVES, CNPAB; Juan Ku-Vera, Autonomous University of Yucatán, México; SEGUNDO SACRAMENTO U CABALLERO, CNPAB; ROBERT MICHAEL BODDEY, CNPAB.
Título: | Increase in milk yield from cows through improvement of forage production using the N2 Fixing legume leucaena leucocephala in a silvopastoral system.
Ano de publicação: | 2020
Fonte/Imprenta: | Animals, v. 10, p. 734-787, 2020.
DOI: | doi:10.3390/ani10040734
Idioma: | Inglês
Conteúdo: | The objective was to evaluate milk production, N2-?xation and N transfer, forage yield and composition (under two cutting intervals) in a silvopastoral system (SPS) with Leucaena leucocephala-Megathyrsus maximus and M. maximus-monoculture (MMM) with crossbred cows in a completely randomized design. Forage yield in the SPS was 6490 and 6907 kg DM ha?1 for cutting intervals (CI) of 35 and 50 days. Forage yield for the MMM was 7284 and 10,843 kg DM ha?1, and forage crude protein (CP) was 29.0% and 26.1% for L. leucocephala, harvested at 35 and 50 days, respectively. CP for the associated M. maximus was 9.9% and 7.8% for CI 35 and 50 days, respectively, and for MMM was 7.4% and 8.4%, harvested at 35 and 50 days. Milk production was 4.7 kg cow?1 day?1 for cows grazing MMM and 7.4 kg cow?1 day?1 under SPS. Nitrogen ?xation in L. leucocephala (%Ndfa) was estimated to be 89% and 95%, at 35 and 50 days, with an N2 transfer to the associated grass of 34.3% and 52.9%. SPS has the potential to ?x and transfer important amounts of N2 to the associated grass, and increase forage CP content and milk production.
Palavras-Chave: | Fixação biológica de nitrogênio.
Thesaurus Nal: | Climate change; Dry season; Livestock.
Categoria do assunto: | S Ciências Biológicas
Registro original: | Embrapa Agrobiologia (CNPAB)
Exemplares: | CNPAB - (41392-1) - UPC - AP - DD -  -  -  - DIS