Nutritional evaluation of diets. Simulation model of digestion and passage of nutrients through the rumen-reticulum

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dc.contributor.authorChilibroste, P
dc.contributor.authorAguilar, C
dc.contributor.authorGarcia, F
dc.date.accessioned2024-01-10T13:15:40Z
dc.date.available2024-01-10T13:15:40Z
dc.date.issued1997
dc.description.abstractTo evaluate the nutritional behaviour of simple and complex diets provided under different feeding regimes, a stochastic, dynamic and predictive simulation model was developed. Feed fractions, considered in the model were soluble non-structural carbohydrates (SNSC), insoluble non-structural carbohydrates (INSC), INSC degradation rate (kd(INSC)), fractional passage rate (kp), neutral detergent fibre (NDF), NDF potentially digestible (PNDF), PNDF degradation rate (kd(PNDF)), soluble crude protein (SCP), insoluble crude protein (ICP), ICP potentially degradable (PICP), and PICP degradation rate (kd(PICP)). Animal characteristics considered in the model, were live weight and physiological status (lactation and/or pregnancy). Variables inherent to management practices were amounts and schedule of DM offered to the animals. The model was subjected to validation for a wide range of experimental conditions. Predictions of total Dh? and forage DM intakes (and therefore the estimate of the substitution of forage for concentrate) had an R-2 = 0.95 and 0.92, respectively. Prediction of NDF digestibility had an R-2 = 0.61 in a smaller range of experimental conditions. (C) 1997 Elsevier Science B.V.
dc.fechaingreso.objetodigital2024-04-11
dc.format.extent17 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1016/S0377-8401(97)00057-6
dc.identifier.issn0377-8401
dc.identifier.urihttps://doi.org/10.1016/S0377-8401(97)00057-6
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/78521
dc.identifier.wosidWOS:A1997YK00400006
dc.information.autorucAgronomía e Ing. Forestal;Aguilar C;S/I;49021
dc.issue.numero3-4
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final275
dc.pagina.inicio259
dc.publisherELSEVIER SCIENCE BV
dc.revistaANIMAL FEED SCIENCE AND TECHNOLOGY
dc.rightsacceso restringido
dc.subjectsimulation model
dc.subjectrumen
dc.subjectintake
dc.subjectDAIRY-COW RATIONS
dc.subjectDYNAMIC-MODEL
dc.subjectMATHEMATICAL-MODELS
dc.subjectRUMINAL DIGESTION
dc.subjectNET CARBOHYDRATE
dc.subjectFIBER DIGESTION
dc.subjectLACTATING COWS
dc.subjectPROTEIN SYSTEM
dc.subjectGRASS SILAGES
dc.subjectCATTLE DIETS
dc.subject.ods13 Climate Action
dc.subject.odspa13 Acción por el clima
dc.titleNutritional evaluation of diets. Simulation model of digestion and passage of nutrients through the rumen-reticulum
dc.typeartículo
dc.volumen68
sipa.codpersvinculados49021
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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