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Low-cost mobile open-circuit hood system for measuring gas exchange in small ruminants: from manual to automatic recording

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Low-cost mobile open-circuit hood system for measuring gas exchange in small ruminants: from manual to automatic recording

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dc.contributor.author Fernández Martínez, Carlos Javier es_ES
dc.contributor.author López Luján, Mª del Carmen es_ES
dc.contributor.author Lachica, Manuel es_ES
dc.date.accessioned 2016-07-25T10:24:49Z
dc.date.available 2016-07-25T10:24:49Z
dc.date.issued 2015-09
dc.identifier.issn 0021-8596
dc.identifier.uri http://hdl.handle.net/10251/68084
dc.description Table 2 contained an incorrect footnote. The correct version is supplied at: http://dx.doi.org/10.1017/S0021859615000556 es_ES
dc.description.abstract [EN] Improvements of a home-made mobile open-circuit respirometry system for the rapid determination of methane (CH4) and carbon dioxide (CO2) production, oxygen (O-2) consumption and, thereafter, heat production (HP) for small ruminants are described and validated. Upgrades consisted of three main features: utilization of a head hood (replacing the previous face mask); use of a computerized control system, data acquisition and recording for gases and air flux (replacing collecting bags for air sampling); and use of a gas cooler to remove the air sample moisture (replacing the chemical drier (silica gel) approach). Calibration factors were established by injecting nitrogen (N-2) and CO2 in the system into the head hood. Repetitive and consistent values for the calibration factor were obtained for O-2 and CO2 which confirmed the absence of leaks and the good performance of the system. In addition, an experimental test with 12 Manchega female dry sheep was conducted to validate the system. Three diets based on cereal grain, fibrous by-products and alfalfa hay (ALH) were used with four sheep per diet. Metabolizable energy intake was close to metabolizable energy for maintenance. Average HP measured by indirect calorimetry (respiratory quotient (RQ) method) was close to the average HP determined from Carbon-Nitrogen balance (CN method) accounting for 443 and 426 kJ/kg(075) body weight (BW) per day, respectively. Fasting HP was determined by the RQ method with two sheep from the ALH diet accounting for 269 kJ/kg(075) BW per day. The head hood and computerized control, data acquisition and recording as well as the gas cooler improved the system by reducing the labour input without loss of functionality for measuring gas exchange and energy metabolism in small ruminants es_ES
dc.description.sponsorship This study was supported by INIA Project (ref. no. RTA2011-00107-C02-02). en_EN
dc.language Inglés es_ES
dc.publisher Cambridge University Press (CUP) es_ES
dc.relation.ispartof Journal of Agricultural Science es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject ENERGY-EXPENDITURE es_ES
dc.subject HEAT-PRODUCTION es_ES
dc.subject BODY-WEIGHT es_ES
dc.subject CN METHODS es_ES
dc.subject GOATS es_ES
dc.subject SHEEP es_ES
dc.subject EWES es_ES
dc.subject METABOLISM es_ES
dc.subject ALPINE es_ES
dc.subject LEVEL es_ES
dc.subject.classification PRODUCCION ANIMAL es_ES
dc.title Low-cost mobile open-circuit hood system for measuring gas exchange in small ruminants: from manual to automatic recording es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1017/S0021859615000416
dc.relation.projectID info:eu-repo/grantAgreement/MICINN//RTA2011-00107-C02-02/ES/Utilización de los carbohidratos de la dieta como indicadores técnicos de la producción de metano en rumiantes lecheros/ es_ES
dc.rights.accessRights Abierto 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 Ciencia Animal - Departament de Ciència Animal es_ES
dc.description.bibliographicCitation Fernández Martínez, CJ.; López Luján, MDC.; Lachica, M. (2015). Low-cost mobile open-circuit hood system for measuring gas exchange in small ruminants: from manual to automatic recording. Journal of Agricultural Science. 153(7):1302-1309. https://doi.org/10.1017/S0021859615000416 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://dx.doi.org/10.1017/S0021859615000416 es_ES
dc.description.upvformatpinicio 1302 es_ES
dc.description.upvformatpfin 1309 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 153 es_ES
dc.description.issue 7 es_ES
dc.relation.senia 304013 es_ES
dc.identifier.eissn 1469-5146
dc.contributor.funder Ministerio de Ciencia e Innovación es_ES
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