The timing of pasture allocation and grass silage supplementation affect pasture intake, milk production and nitrogen partitioning of dairy cows

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AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-10-05T16:32:57Z
Fecha de publicación2021-01-01
ResumenAim of study: To evaluate the effect of time of pasture allocation (PA) and grass silage allocation on dry matter (DM) intake, grazing behaviour, milk production, rumen function and N partitioning of grazing dairy cows. Area of study: Valdivia, Chile Material and methods: Forty-five Holstein-Friesian cows were selected from the Austral Agricultural Research Station at the Universidad Austral de Chile. Cows were allocated to one of three treatments: MPA: 75\% of PA and 25\% of the silage allowance allocated in the morning; BPA: 50\% of PA and silage allowance allocated in the morning; APA: 25\% of the PA and 75\% of the silage allowance allocated in the morning. All treatments received the complement of pasture and silage allowance in the afternoon. Cows received a daily PA of 21 kg dry DM, 3 kg DM of grass silage and 3.5 kg DM of concentrate. Main results: Grazing time was not affected by treatments, however, grazing time between afternoon-morning milking was longer for APA. DM intake and milk production were not modified by treatments, averaging 15.6 kg DM/cow and 22.7 kg milk/d, respectively. Rumen propionate was greater for BPA than APA (18.8 and 17.7 mmol/100 mol, respectively). N intake and N excretion throughout milk, urine and feces were not modified by treatments, averaging 458, 119, 195 and 144 g N/d, respectively. Research highlights: The combination of time of pasture and grass silage allocation is not an adequate strategy to modify pasture intake, milk production and N excretion in dairy cows.es_ES
Doihttps://doi.org/10.5424/sjar/2021192-16264es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/4796
Idiomaenes_ES
EditorialCONSEJO SUPERIOR INVESTIGACIONES CIENTIFICAS-CSICes_ES
RelaciónSpanish Journal of Agricultural Researches_ES
URL relacionadohttps://doi.org/10.5424/sjar/2021192-16264es_ES
DerechosAcceso abierto (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_abf2es_ES
FuenteSpanish Journal of Agricultural Research
Palabra clavegrazing behaviores_ES
Palabra clavegrazing managementes_ES
Palabra clavemilk qualityes_ES
Palabra clavenitrogen use efficiencyes_ES
Palabra claverumen functiones_ES
TítuloThe timing of pasture allocation and grass silage supplementation affect pasture intake, milk production and nitrogen partitioning of dairy cowses_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorBeltran, Ignacio
AutorRuiz-Albarran, Miguel
AutorVon Stillfried, Nicolas
AutorBalocchi, Oscar
AutorWittwer, Fernando
AutorPulido, Ruben G.
AutorBeltran, Ignacioes_ES
AutorRuiz-Albarran, Migueles_ES
AutorVon Stillfried, Nicolases_ES
AutorBalocchi, Oscares_ES
AutorWittwer, Fernandoes_ES
AutorPulido, Ruben G.es_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Número2es_ES
URL relacionadahttps://doi.org/10.5424/sjar/2021192-16264
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen19es_ES

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