Modelling the environmental, social, and economic implications of using fruit pomace as an alternative livestock feed resource: a system dynamic modelling approach

Simple item page
dc.contributor.advisorMudavanhu, Shepherden_ZA
dc.contributor.advisorSigge, G. O.en_ZA
dc.contributor.authorBakasa, Clintonen_ZA
dc.contributor.otherStellenbosch University. Faculty of AgriSciences. Dept. of Food Science.en_ZA
dc.date.accessioned2022-03-04T13:14:55Z
dc.date.accessioned2022-04-29T09:28:54Z
dc.date.available2022-03-04T13:14:55Z
dc.date.available2022-04-29T09:28:54Z
dc.date.issued2022-04
dc.descriptionThesis (MScFoodSc)--Stellenbosch University, 2022.en_ZA
dc.description.abstractENGLISH ABSTRACT: This study assessed the joint dynamic environmental, social and economic implications of utilising wine grape pomace as an alternative livestock feed in South Africa. The specific study objectives were met using a systematic approach that was done through a 3-pronged research process consisting of a detailed literature review, a qualitative analysis and individual synthesis of information and the construction of a qualitative system dynamic model in the form of a causal loop diagram. This was done using the Vensim PLP software, in order to explicitly show the complexity, interactions between the modelled systems variables and the corresponding feedback loop relationships. The study results showed that the estimated amount of grape pomace produced ranged between 248 720 and 304 941 tons per annum. This shows that if wine grape pomace was to be exploited as an alternative livestock feed through incorporating it into commercial feed, there is a significant amount of it to serve as a feedstock for commercial livestock feed formulations. The research study also showed that the benefits of using wine grape pomace as a livestock feed in cattle and sheep by far outweigh the shortcomings posed by this type of fruit pomace. Lastly, the complexity associated with producing and using wine grape pomace as an alternative livestock feed was explicitly illustrated (in the form of a causal loop diagram), explained and discussed. The qualitative model developed explicitly illustrated the inter-relationships between the joint dynamic environmental, social and economic implications of producing and using wine grape pomace as an alternative livestock feed in South Africa. The insights coming out from this study could potentially assist decision makers in the future to come up proactive policies and initiatives that are tailored to encourage the commercial utilization of this waste by-product as a feedstock for commercial livestock feed.en_ZA
dc.description.abstractAFRIKAANSE OPSOMMING: Hierdie studie het die gesamentlike dinamiese omgewings-, sosiale en ekonomiese implikasies van die gebruik van wyndruifafval as 'n alternatiewe veevoer in Suid-Afrika beoordeel. Die spesifieke studiedoelwitte is bereik met behulp van 'n sistematiese benadering wat gedoen is deur 'n drieledige navorsingsproses wat bestaan het uit 'n gedetailleerde literatuuroorsig, 'n kwalitatiewe analise en individuele sintese van inligting en die konstruksie van 'n kwalitatiewe sisteem dinamiese model in die vorm van 'n oorsaaklike lusdiagram. Dit is gedoen met behulp van die Vensim PLP-sagteware, ten einde die kompleksiteit, interaksies tussen die gemodelleerde stelselveranderlikes en die ooreenstemmende terugvoerlus-verwantskappe eksplisiet aan te toon. Die studieresultate het getoon dat die geraamde hoeveelheid druiweafval wat geproduseer word, tussen 248 720 en 304 941 ton per jaar gewissel het. Dit wys dat indien wyndruifafval as 'n alternatiewe veevoer ontgin sou word deur dit in kommersiële voer in te skakel, daar 'n aansienlike hoeveelheid daarvan is om as grondstof vir kommersiële veevoerformulerings te dien. Die navorsingstudie het ook getoon dat die voordele van die gebruik van wyndruiwe-afval as veevoer by beeste en skape by verreweg swaarder weeg as die tekortkominge wat hierdie tipe vrugte-afval inhou. Laastens is die kompleksiteit verbonde aan die vervaardiging en gebruik van wyndruifafval as 'n alternatiewe veevoer eksplisiet geïllustreer (in die vorm van 'n kousale lusdiagram), verduidelik en bespreek. Die kwalitatiewe model wat ontwikkel is, het die onderlinge verbande tussen die gesamentlike dinamiese omgewings-, sosiale en ekonomiese implikasies van die produksie en gebruik van wyndruifafval as 'n alternatiewe veevoer in Suid-Afrika uitdruklik geïllustreer. Die insigte wat uit hierdie studie kom, kan besluitnemers moontlik in die toekoms help om proaktiewe beleide en inisiatiewe na vore te bring wat aangepas is om die kommersiële benutting van hierdie afval neweproduk as 'n grondstof vir kommersiële veevoer aan te moedig.af_ZA
dc.description.versionMastersen_ZA
dc.format.extentvii, 27 pagesen_ZA
dc.identifier.urihttp://hdl.handle.net/10019.1/124724
dc.language.isoen_ZAen_ZA
dc.publisherStellenbosch : Stellenbosch Universityen_ZA
dc.rights.holderStellenbosch Universityen_ZA
dc.subjectFruit pomace -- Environmental aspects -- South Africaen_ZA
dc.subjectSystem dynamics modellingen_ZA
dc.subjectWine grape pomace -- Economic aspectsen_ZA
dc.subjectFood waste as feeden_ZA
dc.subjectLivestock -- Feeding and feedsen_ZA
dc.subjectUCTDen_ZA
dc.titleModelling the environmental, social, and economic implications of using fruit pomace as an alternative livestock feed resource: a system dynamic modelling approachen_ZA
dc.typeThesisen_ZA
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
bakasa_environmental_2022.pdf
Size:
1.04 MB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Masters Degrees (Food Science)