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dc.contributor.authorGregorini, Pablo
dc.contributor.authorVillalba, J. J.
dc.contributor.authorProvenza, F. D.
dc.contributor.authorBeukes, P. C.
dc.contributor.authorForbes, J. M.
dc.date.accessioned2017-07-23T23:49:32Z
dc.date.available2015-02-05en
dc.date.issued2015
dc.date.submitted2014-07-09en
dc.identifier.issn1836-0939en
dc.identifier.urihttps://hdl.handle.net/10182/8343
dc.description.abstractThe work presented here represents additions to the mechanistic and dynamic model of a grazing dairy cow (MINDY). The additions include a module representing preference and selection, based on two theories, namely, post-ingestive feedback and discomfort. The model was evaluated by assessing its ability to simulate patterns of preference and selection in response to a variety of feeding management. The improvements detailed here enable a realistic simulation of patterns of food selection by grazing ruminants, based on a range of feeding situations from different studies with cattle and sheep. These simulations indicate that the concepts encoded in MINDY capture several of the underlying biological mechanisms that drive preferences and selective behaviour. Thus, simulations using MINDY allow prediction of daily and diurnal patterns of selection based on preference, derived from some post-ingestive feedbacks and total discomfort. Estimates of herbage intake and parallel measurements of ingestive behaviour, rumen function and metabolism in grazing ruminants pose experimental and technical difficulties, and matching these processes to animal preference and selective behaviour is a greater challenge. As a consequence, advances in knowledge of foraging behaviour and dietary choice are slow and costly. On completion of more thorough testing, MINDY can be used as a tool for exploratory mechanistic research, to design and organise experimental programs to address a range of factors that control intake and its ecology, helping advance knowledge faster and at a low cost.en
dc.format.extent360-375en
dc.language.isoen
dc.publisherCSIRO Publishing
dc.relationThe original publication is available from - CSIRO Publishing - https://doi.org/10.1071/AN14472en
dc.relation.urihttps://doi.org/10.1071/AN14472en
dc.rights© CSIRO 2015
dc.subjectdietary choiceen
dc.subjectforging behaviouren
dc.subjectmodelen
dc.subjectAgronomy & Agricultureen
dc.titleModelling preference and diet selection patterns by grazing ruminants: A development in a mechanistic model of a grazing dairy cow, MINDYen
dc.typeJournal Article
lu.contributor.unitLincoln University
lu.contributor.unitFaculty of Agriculture and Life Sciences
lu.contributor.unitDepartment of Agricultural Sciences
dc.identifier.doi10.1071/AN14472en
dc.relation.isPartOfAnimal Production Scienceen
pubs.issue3en
pubs.organisational-group/LU
pubs.organisational-group/LU/Agriculture and Life Sciences
pubs.organisational-group/LU/Agriculture and Life Sciences/AGSC
pubs.organisational-group/LU/Research Management Office
pubs.organisational-group/LU/Research Management Office/QE18
pubs.publication-statusPublisheden
pubs.volume55en
dc.identifier.eissn1836-5787en
lu.identifier.orcid0000-0002-7084-5223


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