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Representation of a mathematical model to predict methane output in dairy goats

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Representation of a mathematical model to predict methane output in dairy goats

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dc.contributor.author Fernández Martínez, Carlos Javier es_ES
dc.contributor.author Espinos Gutierrez, Francisco Juan es_ES
dc.contributor.author López Luján, Mª del Carmen es_ES
dc.contributor.author García Diego, Fernando Juan es_ES
dc.contributor.author Cervera Fras, Mª Concepción es_ES
dc.date.accessioned 2015-11-02T08:24:58Z
dc.date.available 2015-11-02T08:24:58Z
dc.date.issued 2013-02
dc.identifier.issn 0168-1699
dc.identifier.uri http://hdl.handle.net/10251/56827
dc.description.abstract Ruminants may contribute to global warming through the release of methane (CH4) gas by enteric fermentation. Most CH4 emissions from ruminants are estimated using simple regression equations. Thus a mechanistic dynamic model to predict CH4 output by goats was developed by using a computer-aided simulation device via object-oriented modeling. The model was structured into seven stocks; body weight, feed, metabolism, milk, methane and reserves (with two stocks). The goat model was set up to simulate indoor facilities in which the goat was fed a mixed ration. Then, 24 goats were used to evaluate the model during 150 days of lactation. A calorimetry system based on an open circuit respiration mask was used for quantification of respiratory CH4 production, as a way to validate the CH4 simulated. The mathematical simulation model estimated an average CH4 conversion factor (Ym) value of 5.3%, and an average daily CH4 production of 1.55 MJ/d. The average daily CH4 production for the validation group of goats was 1.51 MJ/d. Based on our simulation over 5 months of lactation for a mixed diet, use of the Intergovernmental Panel for Climate Change values (Ym = 6.5) could result in an overestimation of enteric CH4 for dairy goats fed concentrate diets. es_ES
dc.description.sponsorship This study was support by INIA Project (Ref. RTA2011-00107-C02-02). en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation INIA RTA2011-00107-C02-02 es_ES
dc.relation.ispartof Computers and Electronics in Agriculture es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Calorimetry es_ES
dc.subject Methane es_ES
dc.subject STELLA es_ES
dc.subject LabVIEW es_ES
dc.subject Goats es_ES
dc.subject.classification BIOLOGIA ANIMAL es_ES
dc.subject.classification PRODUCCION ANIMAL es_ES
dc.subject.classification FISICA APLICADA es_ES
dc.subject.classification NUTRICION Y BROMATOLOGIA es_ES
dc.title Representation of a mathematical model to predict methane output in dairy goats es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.compag.2012.11.013
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ciencia Animal - Departament de Ciència Animal es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto de Ciencia y Tecnología Animal - Institut de Ciència i Tecnologia Animal es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada es_ES
dc.description.bibliographicCitation Fernández Martínez, CJ.; Espinos Gutierrez, FJ.; López Luján, MDC.; García Diego, FJ.; Cervera Fras, MC. (2013). Representation of a mathematical model to predict methane output in dairy goats. Computers and Electronics in Agriculture. 91:1-9. doi:10.1016/j.compag.2012.11.013 es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion http://dx.doi.org/10.1016/j.compag.2012.11.013 es_ES
dc.description.upvformatpinicio 1 es_ES
dc.description.upvformatpfin 9 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 91 es_ES
dc.relation.senia 255306 es_ES


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