Interaction between Concentrate Type and Pasture Mass on Methane Emission of Grazing Dairy Cows

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dc.contributor.authorMuñoz M., Camila
dc.contributor.authorHernández, Felipe
dc.contributor.authorMuñoz, Isadora
dc.contributor.authorMunguia, Ronaldo
dc.contributor.authorUrrutia C., Natalie
dc.contributor.authorUngerfeld M., Emilio
dc.contributor.entityInstituto de Investigaciones Agropecuarias. Centro Regional de Investigación Remehuees_ES
dc.coverageChilees_ES
dc.date.accessioned2022-11-02T14:55:06Z
dc.date.available2022-11-02T14:55:06Z
dc.date.issued2022-06
dc.description.abstractSupplementation with wheat-based concentrates and grazing a pasture mass of ~2200 kg dry matter/ha are feeding strategies that can decrease enteric methane emissions of dairy cows. The objective of this study was to evaluate the effects of combining these methane mitigation strategies to enhance their mitigation potential. We randomly assigned 48 Holstein Friesian grazing dairy cows to one of four treatments arranged in a 2 × 2 factorial design: low (2000 kg DM/ha) or high (3500 kg DM/ha) pregrazing herbage mass, crossed with supplementation with 6 kg/d of a wheat- or corn-based concentrate (composing 61% of concentrate DM) i.e. high herbage mass and corn (HPC), high herbage mass and wheat (HPW), low herbage mass and corn (LPC), and low herbage mass and wheat (LPW). The low herbage mass pasture treatments had higher crude protein (P < 0.01) and a tendency to lower ADF contents (P = 0.06). Milk production was higher (P < 0.05, +2.9 kg/d) with the LPW than with the HPW treatments, but did not differ from the LPC or HPC treatments. Total methane emissions were 9.7% lower for the low herbage mass than for the high herbage mass pasture treatments (P < 0.01). Methane emissions intensity was lower (P < 0.05, 26.0%) with the LPW than with the HPW treatments, differences that were not observed between the corn treatments. In conclusion, a lower herbage mass decreased methane production and intensity compared to a higher herbage mass, but supplying wheat-based concentrates did not decrease methane compared to corn-based concentrates, although methane intensity levels with wheat were affected by pasture mass. At the levels applied in this study, the combination of lower pasture mass pregrazing and wheat supplementation applied together to decrease methane emissions does not offer additional benefits than their separate effects.es_ES
dc.formatapplication/pdfes_ES
dc.identifier.urihttps://hdl.handle.net/20.500.14001/68739
dc.language.isoIngléses_ES
dc.numero.paginas1 p.es_ES
dc.odsAcción por el clima
dc.ods.numero13es_ES
dc.placeofeditionOsorno, Chilees_ES
dc.proyecto.codigo502893-22es_ES
dc.proyecto.jefeMuñoz M, Camila
dc.proyecto.nombre"Integrating mitigation strategies to decrease methane emissions of dary cows in pastoral systems"es_ES
dc.publisherInstituto de Investigaciones Agropecuariases_ES
dc.relation.ispartofPóster INIA Remehuees_ES
dc.relation.ispartofvolN° 35es_ES
dc.subject.spanishvacaes_ES
dc.subject.spanishganado vacunoes_ES
dc.subject.spanishmetanoes_ES
dc.subject.spanishefecto invernaderoes_ES
dc.subject.spanishcontaminacion del airees_ES
dc.titleInteraction between Concentrate Type and Pasture Mass on Methane Emission of Grazing Dairy Cowses_ES
dc.title.alternative8th International Greenhouse Gas & Animal Agriculture Conference - Abstract Bookes_ES
dc.typeImagen

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