Submitted by Jos? Henrique Henrique (jose.neves@ufvjm.edu.br) on 2018-10-05T17:30:59Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) dailiene_costa_martins.pdf: 912491 bytes, checksum: 33139be95a4396938cbad99798e74ac2 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2018-10-05T19:51:28Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) dailiene_costa_martins.pdf: 912491 bytes, checksum: 33139be95a4396938cbad99798e74ac2 (MD5) / Made available in DSpace on 2018-10-05T19:51:28Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) dailiene_costa_martins.pdf: 912491 bytes, checksum: 33139be95a4396938cbad99798e74ac2 (MD5) Previous issue date: 2018 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Os sistemas de integra??o s?o modelos de produ??o sustent?veis que visam melhor uso dos recursos naturais e insumos, gerando maior diversidade de produtos para o produtor rural aumentar sua renda. Estes sistemas s?o mais complexos, pois agregam o componente agr?cola, pecu?rio, e, tamb?m, o florestal em uma mesma ?rea, exigem maior controle do manejo das forrageiras e intera??es com o ambiente, que t?m efeito na produ??o de produtos de origem animal. Objetivou-se avaliar as caracter?sticas da pastagem e o desempenho produtivo de bovinos da ra?a Nelore, em dois sistemas de integra??o, ILP e ILPF, nas esta??es de ver?o e inverno. O experimento foi conduzido na Embrapa Gado de Corte, Campo Grande-MS, em ?rea experimental com dois sistemas, um de integra??o lavoura-pecu?ria-floresta (ILPF) com 227 ?rvores/ha de Eucalyptus urograndis e outro de integra??o lavoura-pecu?ria (ILP) com ?rvores nativas remanescentes, ambos com pastagens de Brachiaria brizantha cv. BRS Piat?. O delineamento experimental utilizado foi o de blocos completos ao acaso em esquema de parcelas subdivididas, em que as parcelas consistiram em dois sistemas de integra??o (ILP e ILPF) e, as subparcelas, nas esta??es do ano (inverno e ver?o). A produ??o de massa seca (PMS) de forragem foi maior no ILP (3.412 kg/ha) que no ILPF (2.308 kg/ha). Para o ganho de peso vivo (GPV) e o ganho m?dio di?rio, n?o foram encontradas diferen?as significativas (P>0,05) entre os tratamentos ILP 238,6 kg/ha; 475,4 g/cab. dia) e ILPF (268,7 kg/ha; 581,4 g/cab. dia). O desempenho animal n?o foi prejudicado pela menor massa seca de forragem no ILPF, na esta??o de ver?o. Os valores de prote?na e DIVMO da folha foram maiores no ILPF. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2018. / Integrated systems are sustainable production models that aim at better use of natural resources, generating greater diversity of products for the rural producer to increase their income. These systems are more complex, since they add the agricultural component, livestock, and also the forest in the same area, require greater control of forage management and interactions with the environment, which have an effect on the production of animal products. The objective of this study was to evaluate the forage production and animal performance of Nellore cattle in two integrated systems, ICL (integrated crop-livestock) and ICLF (integrated crop-livestock-forestry) in summer and winter season. The experiment was perfomed at Embrapa Gado de Corte, Campo Grande - MS, in an experimental area with two integrated systems, crop-livestock-forest (ICLF) with 227 trees/ ha of eucalyptus urograndis and crop-livestock (ICL) with 5 remnant native trees, both with pasture of Brachiaria brizantha cv. BRS Piat?. The experimental design consisted of two complete integration systems (ILP and ILPF), and the subplots, in the seasons (winter and summer). Forage dry matter production (PMS) was higher in ILP (3,412 kg / ha) than in ILPF (2,308 kg/ ha). For the live weight gain (GPV) and average daily gain, no significant differences (P> 0.05) were found between ILP treatments 238.6 kg/ ha; 475.4 g/ cab. day) and ILPF (268.7 kg/ ha, 581.4 g/ day). Animal performance was not affected by the lower dry mass of forage in the ILPF, in the summer season. The protein and IVDOM of leaf were higher in ILCF.

Submitted by ALINE SAMPAIO ARANHA (alinonasampaio@hotmail.com) on 2016-02-15T17:57:11Z No. of bitstreams: 1 002-2016 DISSERTAÇÃO - Aline Sampaio Aranha.pdf: 1519717 bytes, checksum: 5d09acb9ad40ba477330d3b85ab1ba9d (MD5) / Approved for entry into archive by Ana Paula Grisoto (grisotoana@reitoria.unesp.br) on 2016-02-17T12:32:02Z (GMT) No. of bitstreams: 1 aranha_as_me_dra.pdf: 1519717 bytes, checksum: 5d09acb9ad40ba477330d3b85ab1ba9d (MD5) / Made available in DSpace on 2016-02-17T12:32:02Z (GMT). No. of bitstreams: 1 aranha_as_me_dra.pdf: 1519717 bytes, checksum: 5d09acb9ad40ba477330d3b85ab1ba9d (MD5) Previous issue date: 2016-01-15 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / O Brasil se destaca no cenário mundial de produção de bovinos em pastagens. No entanto, grande parte destes pastos apresenta algum grau de degradação, necessitando serem recuperados, nesse sentido os sistemas integrados podem ser uma ferramenta para a recuperação de áreas degradadas e contribui para amortizar, em parte os custos da recuperação das pastagens, pela venda dos grãos e o aproveitamento dos nutrientes residuais das lavouras para produção de forragem. Além, da lavoura e da pastagem, utiliza-se o componente arbóreo, que possibilita o aumento de renda da propriedade. Sendo assim o objetivo deste trabalho foi avaliar o desempenho de novilhos da raça Nelore e a massa de forragem e composição morfológica do capim-marandu em áreas recuperadas com sistemas de integração lavoura-pecuária-floresta (ILPF) nas densidades de 196 e 448 Eucalyptus spp. por hectare e em sistema de integração lavoura-pecuária (ILP), nas estações verão e inverno. O delineamento experimental foi em blocos com 4 repetições. O experimento foi conduzido na APTA – Andradina, SP. Foi avaliado na forragem: massa seca de capim-marandu, porcentagem de folhas, colmo e material senescente, relação folha:colmo; nos animais foi avaliado: ganho de peso, ganho de peso diário, ganho de peso por área, taxa de lotação. A massa seca de forragem foi superior no sistema ILP à ILPF com 448 árvores.ha-1. No inverno a massa seca de forragem foi superior ao verão. Houve interação entre tratamento e estação para porcentagem de folhas e material senescente, enquanto para colmos houve apenas efeito de estação, sendo a porcentagem de colmos no inverno 5% superior ao verão. Não foram observadas diferenças entre os tratamentos para ganho de peso diário, ganho de peso e ganho de peso por área, no entanto houve diferença para estação em todos os parâmetros avaliados, exceto para a taxa de lotação. O peso final dos animais foi maior no tratamento ILP. A massa seca de forragem e taxa de lotação é reduzida em maior adensamento de árvores e a composição morfológica é alterada pelos sistemas ILPFs e ILP. / Brazil stands out on the world stage cattle production in pastures. However, most of these pastures have some degree of degradation and needs to be recovered, accordingly, the integrated system can be a tool for the recovery of degraded areas and contributes to repay in part the costs of recovery of pastures, the sale of grain and the use of residual nutrients of crops for forage production. Therefore the aim of this study was to evaluate the performance of Nellore steers and forage mass and morphological composition of marandu grass in areas retrieved systems crop-livestock-forest integration system (ICLF) in densities 196 and 448 Eucalyptus spp. per hectare and system integration crop-livestock (ICL), during the rainy and dry. The experimental design was in blocks with four repetitions. The experiment was conducted at APTA - Andradina, SP. It was evaluated in forage: dry matter Marandu grass, percentage of leaves, stem and senescent material, leaf: stem ratio; the animals were evaluated: weight gain, daily weight gain, weight gain per area, stocking rate. The dry forage mass was greater in the ICL than ICLF system with 448 trees.ha-1. In the dry season the dry forage mass was higher than the rainy season. There was an interaction between treatment and season to percentage of senescent leaves and material, while there were only station to stalk effect, the percentage of stems and 5% in the dry season than the wet season. No differences were observed between treatments for daily weight gain, weight gain and weight gain per area, however there were differences for season in all evaluated parameters, except for the stocking rate. The final weight of the animals was greatest in the ILP treatment. The dry forage mass and stocking rate is reduced by greater density of trees and morphological composition is changed by ILPFs and ILP systems.

No description available.

Thesis (M.Sc.(Agriculture (Agricultural Economics)) -- University of Limpopo, 2022 / Understanding the factors that influence farmers' decisions to take preventive measures against natural hazards provides insight that can be used to develop user-specific interventions to support their adaptation processes. The use of Protection Motivation Theory in analysing climate risk adaptation behaviour is driven by the increase in climate change, which is projected to increase the frequency and severity of climate related risks such as heatwaves, floods, and droughts. Given the importance of livestock in rural communities, information about their adaptation must be prioritised; yet, this is not the case, as most climate change adaptation research focus on crop production. The main aim of the study was to analyse the drought risk preparedness of smallholder livestock farmers in the Limpopo Province's Blouberg Local Municipality. The study's specific objectives were to identify and describe the socioeconomic characteristics of smallholder livestock farmers in the Blouberg Local Municipality, as well as to determine the drought coping and adaptation strategies used by them and to evaluate the protection motivation theory components influencing that coping and adaptation behaviour. The study collected primary cross-sectional data from 130 smallholder livestock farmers in the Blouberg Local Municipality using a semi-structured questionnaire. The farmers' drought risk coping and adaptation strategies were described using descriptive statistics, while multiple linear regression was used to test whether protection motivation theory variables influence the adaptation and coping choices of smallholder livestock farmers in Blouberg Local Municipality. According to the findings, smallholder livestock farmers in Blouberg Local Municipality use four measures on average to protect their livestock against drought. With an R2 adjusted of 0.70, protection motivation theory variables explain 70% of the variation in farmer protection motivation. Perceived risk probability, perceived severity, perceived self-efficacy, and perceived costs were significant variables associated with farmers' protection motive. It is recommended that interventions meant to increase drought risk resilience of the farmers should prioritise early warning signals to increase perceived probability of the farmers, create platforms for information exchange to increase perceived severity, teach farmers methods practically to increase perceived self-efficacy and keep the price of utilising measures low to decrease perceived cost / Risk and Vulnerability Science Centre (RVSC)

In this study brand loyalty of pharmaceutical livestock products among commercial farmers was measured. The purpose of the study was to assist agribusinesses to identify the dominant determinant when commercial farmers purchase pharmaceutical livestock products from them. The study analysed two marketing mix elements price and product (specifically brand name) in farmer buying behaviour. A structured questionnaire was used to employ an empirical study in a quantitative style to determine the commercial farmers‟ perceptions and buying behaviour when they buy pharmaceutical livestock products. For agribusinesses the study makes it clear where to focus resources and energy in today‟s dynamic, uncertain and competitive environment that agribusinesses operate in, specifically in the North West Province of South Africa. The literature study addressed the brand loyalty constructs and their application in the agricultural market. Resultantly the contribution to the body of knowledge pertains to brand loyalty‟s influence in the marketing strategy (price and brand name). The study also explored opportunities for the successful distribution of pharmaceutical livestock products through agribusinesses. Management of agribusinesses will have to adopt a market-oriented strategy that will assist agribusinesses on various dimensions of performance and will have a significant positive effect on return on assets, sales growth and sustainability. The inputs and assistance of the suppliers and marketers are of utmost importance and will add value to the execution of agribusinesses‟ marketing strategy. / MBA, North-West University, Potchefstroom Campus, 2015

In this study brand loyalty of pharmaceutical livestock products among commercial farmers was measured. The purpose of the study was to assist agribusinesses to identify the dominant determinant when commercial farmers purchase pharmaceutical livestock products from them. The study analysed two marketing mix elements price and product (specifically brand name) in farmer buying behaviour. A structured questionnaire was used to employ an empirical study in a quantitative style to determine the commercial farmers‟ perceptions and buying behaviour when they buy pharmaceutical livestock products. For agribusinesses the study makes it clear where to focus resources and energy in today‟s dynamic, uncertain and competitive environment that agribusinesses operate in, specifically in the North West Province of South Africa. The literature study addressed the brand loyalty constructs and their application in the agricultural market. Resultantly the contribution to the body of knowledge pertains to brand loyalty‟s influence in the marketing strategy (price and brand name). The study also explored opportunities for the successful distribution of pharmaceutical livestock products through agribusinesses. Management of agribusinesses will have to adopt a market-oriented strategy that will assist agribusinesses on various dimensions of performance and will have a significant positive effect on return on assets, sales growth and sustainability. The inputs and assistance of the suppliers and marketers are of utmost importance and will add value to the execution of agribusinesses‟ marketing strategy. / MBA, North-West University, Potchefstroom Campus, 2015

This item was digitized as part of the Million Books Project led by Carnegie Mellon University and supported by grants from the National Science Foundation (NSF). Cornell University coordinated the participation of land-grant and agricultural libraries in providing historical agricultural information for the digitization project; the University of Arizona Libraries, the College of Agriculture and Life Sciences, and the Office of Arid Lands Studies collaborated in the selection and provision of material for the digitization project.

Thesis (PhD)--Stellenbosch University, 2004. / ENGLISH ABSTRACT: This project aimed at enhancing the net benefit in production systems. It took a holistic approach to evaluate the potential interactions of herbaceous legumes in relation to weed dynamics, soil fertility and livestock management in the crop-livestock system in Nigeria. The project was carried out between 2000 and 2002 in two localities. These were the National Animal Production Research Institute (NAPRI) at Zaria in the northern Guinea savannah and the International Institute of Tropical Agriculture (IITA) at Ibadan in the derived savannah. The main experiment was carried out in the northern Guinea savannah, while the secondary experiments were simultaneously conducted in the derived savannah and the northern Guinea savannah. The experimental design for the three experiments reported in this thesis is a splitsplit plot, fitted into randomised complete block design (RCBD), with four replications. Main plot treatments were herbaceous legumes, namely Vigna unguiculata, Arachis hypogaea, Glycine max, Aeschynomene bistrix, Centrosema pascuorum, Stylosanthes guianensis and natural vegetation. Sub-plot treatments were management systems (1) M1, 'residues left in the field'; (2) M2, 'residues taken out of the field' and (3) M3, 'residues fed to livestock, manure/urine/refused feeds returned'. Sub-plot treatments were administered in a sequence following rotational fallows of herbaceous legumes and natural vegetation. However, plots in the secondary experiments were not subdivided before the cropping of maize in 2002, and for logistical reasons only two sub-plot treatments, M1and M2, are featured in this experiment. Herbaceous legumes were established at the start of the rainy season, approximately in June, in 2000, 2001 and 2002. All herbaceous legumes received single super phosphate (SSP) at 20kg ha" P20S at planting, while minimum hand weeding was done to maintain pure legume stands during the establishment phase. Forage biomass was higher in the derived savannah than in the northern Guinea savannah. Similarly, higher forage yields were observed after two consecutive years of legume fallow and natural vegetation, compared to the first year plots. Grain yield for Glycine max was consistently higher than for the other two grain legumes in 2001 and 2002. Chemical analysis of herbaceous legumes and natural vegetation showed that crude protein values ranged between 11.2% to 17.3% for legumes; that was significantly (p<0.05) higher than the 8.6% value found for natural vegetation. Moreover, all herbaceous legumes and natural vegetation, except Arachis hypogaea, had dry matter digestibility values of more than 30%. Maize grain and stover yields on herbaceous legumes fallowed plots were evaluated and compared with those for natural vegetation. Results in 2001, i.e. after a one-year fallow with legumes, indicated that the dry matter of maize grain and stover yields in the Stylosanthes guianensis plots were higher among the forage legumes. Arachis hypogaea gave the highest grain and stover yields among the grain legumes in the northern Guinea savannah. Results in 2002, i.e. after a two-year fallow, also showed that the productivity of maize planted on Arachis hypogaea and Glycine max fallowed plots were consistently higher across the three management systems tested in the Centrosema pascuorum, Glycine max, Aeschynomene histrix, Vigna unguiculata and least weight gain was recorded for the natural vegetation. Objective functions in linear optimisation, or linear combinations in algebra, used to link dynamic processes in livestock production (Iiveweight gain) with the dynamic processes in soils (soil nitrogen), weeds (weed biomass), herbaceous legumes (legume biomass) and crop production (maize grain and stover yields) under varying management systems took the form: Management system 1, Y, = f (XI, Xz, x4); Yr= 0 Management system 2, Y, = f (x" x2); Yz = 0 Management system 3, Y, = f (XI, Xz, xl); Yz= f (XI, Xz, X4. x5) Where (1) (2) (3) Y1 = Crop in kg; Y2 = Livestock weight gain in kg; X1= Weed in kg; X2 = Soil N g kg-1; X3 = Livestock compost in kg; N= Herbaceous legumes in kg; X5 = Maize stover in kg, for the three management systems considered in this experiment. Deductions from these equations showed that Aeschynomene histrix performed better under M1, i.e. when legumes residues were left on the field. Natural vegetation performed better than the herbaceous legumes under M2, i.e. when legumes residues were exported out of the field. However, the presence of manure in M3 enhanced soil fertility in the system and improved the overall productivity across all the legumes and natural vegetation. Overall rankings, conducted by pooling all components in the system, indicated that Glycine max performed best among the legumes, followed by Stylosanthes guianensis and Arachis hypogaea, which ranked second and viithird respectively. In relation to the specific legume groups, Stylosanthes guianensis performed better than the other two forage legumes, while Glycine max also performed better than the other two grain legumes tested. We can see from these on-station research results that there are indications of positive opportunities for improving overall productivity and resources. This can be done through integrating and complementing crop and livestock production, to provide a sustainable intensification of agriculture. / AFRIKAANSE OPSOMMING: Die studie is uitgevoer om die potensiële wisselwerking van kruidagtige peulplante met onkruiddinamika, grondvrugbaarheid en veebestuur te evalueer. Die hoofeksperiment in die "Northern Guinea Savannah" is vanaf 2000 tot 2002 uitgevoer by die "National Animal Production Research Institute" (NAPRI) in Zaria, Nigerië. Die twee sekondêre eksperimente is gelyktydig in Zaria en by die "International Institute of Tropical Agriculture" (liTA) naby Ibadan in die "Derived Savannah" uitgevoer. Die eksperimentele ontwerp was 'n dubbel gesplete perseelontwerp gepas in 'n volledig ewekansige blokontwerp met vier herhalings. Die hoofkomponente was die kruidagtige peulplante naamlik: Vigna unguiculata, Arachis hypogaea, Glycine max, Aeschynomene histrix, Centrosema pascuorum, Stylosanthes guianensis en natuurlike plantegroei. Die gekose peulplante is potensieel aangepas vir uiteenlopende omgewings en word dikwels na verwys as "'n mandjie van opsies". Subperseel behandelings was (1) peulplant gevestig en gelaat op die land - M1; (2) peulplant gevestig, geoes en weggeneem uit die land M2 en (3) peulplant gevestig, geoes, vir vee gevoer, mis/urine/vermorste voer terug na die land - M3. Die dubbel gesplete perseel behandelings is toegedien in 'n sekere volgorde nadat die peulplant rusoes/braak toegepas is. In die eerste jaar is die kruidagtige peulplante geplant op die hoofperseel van 25m by Sam. In die tweede jaar is die hoofperseel verdeel in twee persele waar onderskeidelik peulplante en mielies gevestig is terwyl daar in die derde jaar 'n verdere verdeling was wat gelei het tot verskillende gewasrotasiestelsels, nl. Peulplant-peulplant-mielies, peulplant-mielies-peulplant en peulplant-mielies-mielies. Parameters wat insluit planthoogte, -wydte en persentasie grondbedekking van die kruidagtige peulplante is tweeweekliks gemeet op vier 1M2 persele wat ewekansig oor elke hoofperseel versprei is in beide gebiede waar die studie uitgevoer is. Resultate het getoon dat die kruidagtige peulplante wat getoets is potensiële kandidate is vir insluitings in gewas/weiding rotasiesteiseis. Alhoewel voerproduksie hoër was in die "derived savannah" as in die "northern Guinea savannah", het die prestasie van die peulplante in die noordelike savannah gevarieer met die gewasproduksiestelsels. Hoër opbrengste is gerealiseer na twee opeenvolgende jare van oesrus met peulplante vergeleke met die eerste jaar waar daar geen residuele effek van die peulplante was nie, en die laaste jaar wat deur 'n mielie-oes voorafgegaan is. Biomassa opbrengste na twee jaar van aanhoudende verbouiing was die hoogste vir S. guianensis en die laagste vir A. hypogea. Ruproteien inhoud van die kruidagtige peulplante het gewissel van 170 g kg-1 DM in A. hypogea tot 62.4 g kg-1 DM in A histrix. Graanproduksie deur G. max was deurlopend hoër in 2001 en 2002 vergeleke met die twee ander graanproduserende peulplante nl. V. unguiculata en A. hypogea. Die voerproduksie in 2002 was heelwat hoër as die vorige jaar. Rotasie effekte op mieliegraan en oesreste na peulplante is vergelyk oor die dubbel gesplete persele (areas met verskillende oesruslengtes) om die ximplikasies van hulle residuele effek op grondvrugbaarheid verbetering en onkruid dinamika te bepaal. Mielie-opbrengs na een jaar van rusoes toon hoër waardes op persele wat onder kruidagtige peulplante was vergeleke met natuurlike plantegroei. Net so was die opbrengs deurlopend hoër op persele waar daar graan peulplante was as waar daar voer peulplante was. Oor die algemeen was die waardes hoër vir G. max, gevolg deur A. hypogea, A. histrix, C. pascuorum, V. unguiculata, S. guianensis en die laagste vir natuurlike plantegroei. In terme van die bestuurstelsels, het persele wat kompos ontvang het (M3) beter as die ander twee bestuurstelsels presteer (2.6 Mg ha" mieliegraan). Produksie van mieliegraan en oesreste na twee opeenvolgende jare van mielieverbouing was die hoogste na G. max (7.2 Mg ha" mieliegraan), gevolg deur die A. histrix perseel en die laagste op S. guianensis persele. Algemene waarnemings oor die twee subpersele wat met mielies beplant was in 2002 het getoon dat mielies beter presteer het op persele wat twee opeenvolgende jare met peulplante beplant was. Onkruidsamestelling en verspreiding is in beide die peulplante en natuurlike plantegroei gemeet. Grond vir saadbankontledings is op diagonale transekte in 0.5m by 0.5m kwadrate gemonster. Grondmonsters is ge-analiseer vir pH, totale stikstof, organiese koolstof, fosfor, kalsium en magnesium. Hierdie parameters is gebruik in 'n meervoudige regressie ontleding om hulle effek op onkruidspesievoorkoms te bepaal. Onkruidgetalle in lande na In rusoes het In deurlopende hoër vlak van besmetting getoon op die natuurlike plantegroei persele as op die peulplant persele. Die prestasie in terme van onkruidonderdrukking was in dalende volgorde: S. guianensis, C. pascuorum, V. ungucuilata, G. max, A. hypogaea en A. histrix. Die onkruidsamestelling het verskilonder die verskillende behandelings en dit het ook met tyd verander in dieselfde behandelings. In Bykomende eksperiment met die peulplante is uitgevoer om hulle effek op inname en groei van skape, asook die effek op kompos wat gemaak is van vermorste materiaal en uitskeidings van die skape, te bepaal. Droë materiaal verteerbaarheid was hoog vir S guianensis, G. max en A. histrix terwyl die laagste syfer verkry is by A. hypogea (177.6 g kg-1 DM). Ramme wat met kruidagtige peulplante gevoer is het beter presteer as die wat met natuurlike plantegroei gevoer is. Ramme wat met A. hypogaea gevoer is, het In gemiddelde daaglikse toename (GOT) getoon van 85.7 g daq", gevolg deur S. guianensis, C. pascuorum, G. max, A. histrix, V. unguiculata en laaste natuurlike plantegroei. Bykomende ontledings was gemik daarop om objektiewe funksies af te lei om dinamiese prosesse in vee (massatoename) met dinamiese prosesse in grond (grond N), onkruid (onkruidmassa), kruidagtige peulplante (peulplantmassa) en mielies (mieliegraan en oesreste massas) onder verskillende bestuurstelsels te verbind. In In poging om objektiewe funksies xiivan die verskillende komponente van die studie te bepaal, is die volgende lineêre funksies vir die drie bestuurstelsels oorweeg nl. Bestuurstelsel1. Yl = f (Xl, xz, x.); Yz= 0 Bestuurstelsel 2, Yl = f (Xl, Xz); Yz= 0 Bestuurstelsel3, Yl = f (Xl, X2, Xl); Yz= f (Xl. Xz. x.. les) Waar (1) (2) (3) Y1 = Oesopbrengs in kg; Y2 = Daaglikse massatoename in kg; X1 = Onkruidmassa in kg; X2 = Grond N in g kg-1 ; X3 = Kompos in kg; X4 = Kruidagtige peulplante in kg; X5 = Mieliereste in kg. Onder bestuurstelsel 1, het A. histrix beter as die ander gewasse presteer, terwyl natuurlike veld beter presteer het onder bestuurstelsel 2. Dit is 'n aanduiding dat bestuurstelsel 2 nie volhoubaar is nie. Die derde bestuurstelsel verteenwoordig volle integrasie van gewas en vee produksiestelsels. Die teenwoordigheid van mis in die stelsel het grondvrugbaarheid verbeter en algemene produktiwiteit verbeter. Hierdie resultate dui aan dat daar geleenthede is om algemene produktiwiteit te verbeter deur integrasie en komplementering van gewas- en veeproduksiestelsels om volhoubare intensifikasie van landbou te bereik.

Thesis (PhD)-- Stellenbosch University, 2014. / ENGLISH ABSTRACT: This thesis explores the relationship between African traditional livestock regimes and state veterinary services in colonial Zimbabwe from the perspective of socio-environmental history. It offers a new direction both methodologically and empirically as few academic studies have used state veterinary services archives extensively as a lens to understanding the parameters of the interaction of veterinarians and African livestock owners during the colonial period. Though located in socio-environmental history, this study has applicability to the histories of medicine, conservation and land policy as it connects with the broader debate regarding the experiences of local healing practices under colonial administrations. It examines the complex, fluid and interactive interdependence of people, livestock and disease, and discusses how veterinary medicine, conservation policies, and introduced epizootics impacted on African traditional livestock regimes. It demonstrates how African livestock owners reacted to veterinary challenges, and how they understood veterinary and environmental arguments mobilized by the colonial state to justify segregation. It shows that state veterinary services were not limited to pharmacological drugs and the administration of inoculants but also extended to breeding and other livestock improvement activities such as pasture management. It argues that the provision of state veterinary services was largely influenced by the shifting, contradictory relationship involving the state, native commissioners and white settlers. Given the fractured nature of colonial administration in Southern Rhodesia, this thesis also discusses conflicts between colonial experts (veterinary and animal scientists) and African livestock owners over what type of cattle to rear, how they were to be pastured, and also how epizootics and enzootics could be eradicated or controlled. Key Words: conservation; African livestock regimes; veterinary medicine, local healing practices; dipping; therapeutics; acaricides; centralisation; socio-environmental history; liberation war; Zimbabwe; Southern Rhodesia; Rhodesia. / AFRIKAANSE OPSOMMING: This thesis explores the relationship between African traditional livestock regimes and state veterinary services in colonial Zimbabwe from the perspective of socio-environmental history. It offers a new direction both methodologically and empirically as few academic studies have used state veterinary services archives extensively as a lens to understanding the parameters of the interaction of veterinarians and African livestock owners during the colonial period. Though located in socio-environmental history, this study has applicability to the histories of medicine, conservation and land policy as it connects with the broader debate regarding the experiences of local healing practices under colonial administrations. It examines the complex, fluid and interactive interdependence of people, livestock and disease, and discusses how veterinary medicine, conservation policies, and introduced epizootics impacted on African traditional livestock regimes. It demonstrates how African livestock owners reacted to veterinary challenges, and how they understood veterinary and environmental arguments mobilized by the colonial state to justify segregation. It shows that state veterinary services were not limited to pharmacological drugs and the administration of inoculants but also extended to breeding and other livestock improvement activities such as pasture management. It argues that the provision of state veterinary services was largely influenced by the shifting, contradictory relationship involving the state, native commissioners and white settlers. Given the fractured nature of colonial administration in Southern Rhodesia, this thesis also discusses conflicts between colonial experts (veterinary and animal scientists) and African livestock owners over what type of cattle to rear, how they were to be pastured, and also how epizootics and enzootics could be eradicated or controlled. Key Words: conservation; African livestock regimes; veterinary medicine, local healing practices; dipping; therapeutics; acaricides; centralisation; socio-environmental history; liberation war; Zimbabwe; Southern Rhodesia; Rhodesia.

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