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Ranallo, Gerald W. "Using a statewide farm business management DACUM to determine the knowledge-base deficiencies of dairy farmers in northwest Wisconsin." Online version, 1998. http://www.uwstout.edu/lib/thesis/1998/1998ranallog.pdf.
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Bulale, Abdinasir Ibrahim. "Smallholder dairy production and dairy technology adoption in the mixed farming system in Arsi Highland, Ethiopia /." Berlin : Köster, 2000. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=009047143&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
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Eastwood, Callum Ross. "Innovatoive precision dairry systems : a case study of farmer learning and technology co-development /." Connect to thesis, 2008. http://repository.unimelb.edu.au/10187/3530.
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Suzuki, Atsushi. "Study of computer use in the Queensland dairy industry : farmers' perceptions /." [St. Lucia, Qld.], 1999. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18330.pdf.
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Hove, Godfrey. "The state, farmers and dairy farming in colonial Zimbabwe (Southern Rhodesia), c.1890-1951." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/97113.
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Thesis (PhD)--Stellenbosch University, 2015.ENGLISH ABSTRACT: This thesis uses dairy farming in colonial Zimbabwe/Southern Rhodesia as a lens to explore the intersection of economic, social and environmental factors in colonial agriculture from the 1890s until 1951, when a new regulatory framework was introduced for the industry. It examines the complex and fluid interactions between the colonial state and farmers (both white and black), and the manner in which these interactions shaped and reshaped policy within the context of the local political economy and the changing global economic conditions. It examines the competing interests of the colonial state and farmers, and how these tensions played out in the formulation and implementation of dairy development policy over time. This thesis demonstrates that these contestations profoundly affected the trajectory of an industry that started as a mere side-line to the beef industry until it had become a central industry in Southern Rhodesia’s agricultural economy by the late 1940s. Thus, besides filling a historiographical gap in existing studies of Southern Rhodesia’s agricultural economy, the thesis engages in broader historiographical conversations about settler colonial agricultural policy and the role of the state and farmers in commercial agriculture. Given the fractured nature of colonial administration in Southern Rhodesia, this study also discusses conflicts among government officials. It demonstrates how these differences affected policy formulation and implementation, especially regarding African commercial dairy production. This thesis also explores the impact of a segregationist agricultural policy, particularly focusing on prejudices about the “African body” and hygiene. It shows how this shaped the character of both African and white production trends. It demonstrates that Africans were unevenly affected by settler policy, as some indigenous people continued to compete with white farmers at a time when existing regulations were intended to exclude them from the colonial dairy industry. It argues that although dairy farming had grown to be a strong white-dominated industry by 1951, the history of dairy farming during the period under review was characterised by contestations between the state and both white and African farmers.
AFRIKAANSE OPSOMMING: Hierdie tesis gebruik suiwelboerdery in koloniale Zimbabwe/Suid-Rhodesie as ’n lens om die ekonomiese, sosiale en omgewingsgerigte kruispunte in koloniale landbou van omstreeks 1890 t 1951 toe ‘n nuwe regulatoriese raamwerk vir suiwelboerdery ingestel is te, ondersoek. Die komplekse en vloeibare interaksies tussen die koloniale staat en boere (wit sowel as swart) en die wyse waarop hierdie interaksies beleid binne die konteks van die plaaslike politieke ekonomie en die globale ekonomiese omstandighede gevorm en hervorm het, word ondersoek. Hierbenewens word gelet op die spanninge tussen die belange van die koloniale staat en die boere (wit sowel as swart) en hoe hierdie spanning oor tyd in die formulering en implementering van suiwelbeleid gemanifested het. Hierdie tesis demonstreer dat di spanninge en stryd ’n diepgaande uitwerking gehad het op ’n bedryf wat aanvanklik as ondergeskik tot die vleisbedryf begin het, naar teen die leat as ‘n sentrale veertigerjere bedryf in die Rhodesiëse landelike ekonomie uitgekristalliseer het. Benewens die feit dat die proefakrif ’n historiografiese leemte in bestaande koloniale Zimbabwe aangespreek, vorm dit ook deel van ’n breër historiografiese diskoers ten opsigte van setlaar koloniale landbou in Zimbabwe en die rol van die staat en boere in kommersiële landbou. Vanweё die gefragmenteerde aard van koloniale administrasie in Suid-Rhodesië, fokus die tesis ook op die konflikte tussen regeringsamptenare en hoe hierdie geskille veral beleidsformulering en implementering ten opsigte van swart kommersiële suiwelboerdery beïnvloed het. Vervolgens word die uitwerking van ’n landboubeleid geliasear of segragasi onder die loep geneem met spesiale verwysing na die geskiktheid van swartmense vir kommersiële suiwelboerdery en hoe dit die aard en karakter van beide swart sowel as wit produksie tendense beïnvloed het. Daar word aangedui dat swartmense nie eenvormig deur setlaarsbeleid geraak is nie aangesien van hulle met wit boere meegeding het op ’n stadium toe die heersende regulasies daerop gemik was oin baie van hulle uit die koloniale suiwelbedryfwit te slint. Die sentrale argument is dat hoewel suiwelboerdery sterk wit gedomineerd was teen 1951, die geskiedenis van die bedryf gedurende die tydperk onder bespreking gekenmerk is deur stryd en konflite tussen die staat en wit sowel as swart boere.
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Shanmugam, Ramaradj. "Efficiency and productivity of Quebec dairy farms." Thesis, McGill University, 1998. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=20234.
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The analysis of cost and profit efficiencies of a sample of 588 Quebec dairy farms shows significant potential to reduce costs and increase profits. In general, the small farms were more cost efficient while large farms were more profit efficient. Increased use of farm grown feed was associated with higher efficiency while increased use of concentrates was associated with lower efficiency.The productivity of individual dairy farms were estimated using data envelopment analysis. The average annual growth rate of productivity was 0.70% with a standard deviation of 2.44% for the 1987--93 period. The Spearman's rank correlation coefficient did not show any significant relationship between farm size and growth rate.
The Artificial Neural Networks (ANN) approach, used for the first time to estimate technical efficiency, performed equally as good as the regression models in modeling the technology especially at the higher levels of output. The efficiency values estimated using ANN were higher than that estimated by ordinary least squares method. The results indicate the existence of significant potential for improving the efficiency of resources on Quebec dairy farms.
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Bennett, Michael Robert. "Perceptions of sustainability of dairy support land farmers : a case study investigation." Diss., Lincoln University, 2009. http://hdl.handle.net/10182/1219.
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This project investigated the business, environmental and social sustainability of dairy farms that include dairy support land. Seventeen farmers were interviewed using Yin’s case study method (Yin, 2003). The interviewees were selected from a list provided during a series of focus groups done with rural professionals prior to continuing with the main body of the research. Those interviewed saw that the primary role of dairy support land is to protect the dairy farm from external factors. Dairy farms are vulnerable to externalities due to high fixed costs and the relationship between cow condition and milk production. The ability of dairy support land to manage externalities relates to quantity of feed grown, therefore feed grown is perceived as the most appropriate measure of performance. For dairy support land to be sustainable, it must be well resourced. On a fully resourced DSL unit, there will be time to plan and carry out essential tasks and environmentally important developments such as riparian fences and stockwater systems are likely to be in place. If the dairy support land unit is not fully resourced it will become a liability to the overall system as the supply of feed becomes unreliable, cows calve in poor condition and dairy farm staff and management are overextended. Poorly resourced dairy support land is also unlikely to have environmentally friendly developments in place. The case studies also demonstrated that the fundamentals of sustainability and practice remain constant across a variety of soil and climatic conditions in Canterbury and Southland.
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Collins, Sophie. "An investigation of whether and how welfare outcome assessment could be better used by UK dairy farmers." Thesis, Royal Veterinary College (University of London), 2016. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.701666.
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Pinzke, Stefan. "Towards the good work : methods for studying working postures to prevent musculoskeletal disorders with farming as refererence work /." Alnarp : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 1999. http://epsilon.slu.se/avh/1999/91-576-5471-9.pdf.
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Glover, Jane. "Why do dairy farmers continue to farm? : can Bourdieu's theory aid our understanding and suggest how farmers could regain some control in their industry?" Thesis, Loughborough University, 2008. https://dspace.lboro.ac.uk/2134/16825.
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The research asked the pivotal question - Why do dairy farmers continue to farm? There is currently a lack of recognition for the social, cultural and symbolic merits of family businesses, and the non-economic contributions made to society. In critically reviewing the economic paradigm, which assumes man acts rationally in a world of perfect information, economic theory ignores the role of alternative forms of capital in acquiring power to conduct business successfully. Using Bourdieu's concepts of field, habitus and capital offered sociological insights into small family farm businesses. Bourdieu's generic forms of capital allowed for the appraisal of not only economic capital; but social, cultural and symbolic capital. A qualitative, mixed methods approach was chosen, through a series of ten ethnographic case studies conducted in Staffordshire. Bourdieu's work and qualitative methods allowed the farm to be investigated as a collective social unit. Each case study consisted of participant observation, interviews with the farmer, and where possible spouses and children. The work demonstrates that whilst policy tries to shape how agriculture is conducted, it is not necessarily creating an environment in which farmers can empower themselves, and their business operations; as powerful groups seek to retain their position in the field (dairy industry). Sufficient levels of social, cultural and symbolic capital are vital for family farm business success; defined in economic (wealth) and non-economic (personal development, job satisfaction and lifestyle) parameters. For the farming world, the work extends Bourdieu's theory proposing the need to introduce natural capital. Nature's role in farming is critical and farmers need to utilise and support natural systems. Despite farmers losing control in their field, many have behaved in enterprising ways in order to continue the family farm business. However, farmers need to increase their levels of all forms of capital in order to increase their power and position in society. Consequently, farmers must also protect their levels of capital in order to slow down further decreases in their power in the field.
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Xu, Qing Yun. "The competitiveness of Ontario dairy farms : a farm level analysis." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=116061.
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The Canadian supply managed dairy sector is likely to face more competitive pressure from challenges through the World Trade Organization (WTO) and the changing global trade environment. Therefore, it is highly prudent for Canadian dairy producers to focus their concern on their level of competitiveness and how to improve it. This study investigated the competitiveness of Ontario dairy sector based on a sample of farm level data with a Box-Cox transformed econometric cost model. The data were gathered by the Ontario Dairy Farm Accounting Project, for the years 2005, 2006, and 2007. The impacts of output, yield per cow and several farm-specific characteristics on the average cost of milk production were examined. Results support the presence of significant size economies and yield economies within Ontario milk production. Minimum costs were achieved for farms with approximately 125 cows. The results also indicated that some farm-specific characteristics, breed and region, also had significant impacts on the cost of Ontario milk production. However, it appears that Ontario farms may find it difficult to survive if they are forced to face international competition. Even at their minimum, average costs were above an indicator international dairy price.
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Pile, Stephen John. "The private farmer : transformation and legitimation in advanced capitalist agriculture." Thesis, University of London, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310515.
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Duval, Julie. "Herd health advisory services in organic dairy cattle farms." Thesis, Nantes, Ecole nationale vétérinaire, 2016. http://www.theses.fr/2016ONIR086F/document.
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Améliorer la santé des vaches laitières en élevage agrobiologiques (AB) est bien souvent nécessaire, pour ces élevages ne répondant pas toujours aux principes de l’AB et aux attentes des consommateurs d’avoir un niveau de santé et bien-être animal élevé. Cette thèse explore des voies d’amélioration du conseil sanitaire en vue d'améliorer la santé animale dans ces élevages. Les résultats de nos travaux montrent que les vétérinaires ont le plus souvent un rôle de thérapeute dans les élevages laitiers AB. L'obtention d'un rôle de conseiller a été entravée par des spécificités liées à l’AB, telles que les différences entre éleveurs et vétérinaires dans les objectifs de gestion de la santé des animaux et les pratiques sanitaires. Une étude d'intervention a été effectuée pour tester un dispositif de conseil dans des élevages AB en France et en Suède, basé sur l’utilisation d’outils de surveillance et prévention de maladies de production. Le dispositif a été réalisé en utilisant une approche participative, impliquant l’éleveur et le conseiller ; la flexibilité de l’outil a permis de produire un protocole de surveillance adaptée à chaque élevage. Bien qu’aucun effet sur la santé du troupeau n’a été prouvé, le dispositif a été perçu pour contribuer à la santé du troupeau par ses utilisateurs. Il a rempli la plupart de ses fonctions prévues de surveillance et de prévention des maladies et a stimulé le dialogue entre éleveurs et conseillers. Des outils qui stimulent le dialogue et qui sont adaptables à chaque élevage sont une voie à suivre pour le développement du conseil en santé animaleImproving herd health on organic dairy farms is often needed, since organic dairy farms do not consistently meet the organic principles and consumers’ expectations of high animal health and welfare. This thesis explores ways to improve the pertinence of herd health advisory services in order to improve animal health on organic dairy farms. The results of our studies show that veterinarians mostoften have a role of therapist on organic dairy farms. Obtaining a more advisory role was hampered due to specificities of the organic sector, such as differences between farmers and veterinarians in animal health management objectives and practices. An intervention study was performed testing a Herd Health and Production Management (HHPM) program on organic dairy farms in France and Sweden, based on herd health monitoring and disease prevention activities. The program was built using a participatory approach, making farmer and advisor work together ; the adaptability of the program allowed to design farm specific herd health monitoring tools. Although no effecton herd health measured, the program was perceived to contribute to herd health by its users. The program fulfilled most of its intended functions in herd healthmonitoring and disease prevention and stimulated dialogue between farmers and their advisors. We consider that dialogue promoting and tools adaptable to farm specific situations are a possible way forward for the development of advisory services in animal health
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Jay, Grace Mairi M. "Symbolic order and material agency: A cultural ecology of native forest remnants on Waikato dairy farms." The University of Waikato, 2004. http://hdl.handle.net/10289/2603.
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Loss of native biological diversity is a world-wide problem of growing international concern. One of the main causes of native biodiversity loss is destruction and degradation of native habitat through land development for agriculture. The Waikato region is an example of the destruction and degradation of native habitat in association with the development and intensification of farming, including dairy farming. This thesis explores cultural reasons for the loss of native forest in the Waikato region, and reasons why fragments of native forest remain. The research involves a participant observation study of 'typical' dairy farm families for 9 months of the dairy year, in-depth interviews of dairy farmers who have protected a significant proportion of their land for conservation of native habitat, a questionnaire of dairy farmers, and an examination of dairy farm magazines and other literature to identify the values and attitudes that motivate dairy farmers in relation to land management and protection of native habitat. The title of the thesis suggests two elements that are important for understanding the loss and persistence of native forest in Waikato's farmed landscapes. Symbolic reason refers to the values, attitudes and perceptions of farmers that derive from socio-political and economic forces which encourage productivist practises that leave little opportunity for native forest to survive. Material agency refers to the local circumstances of particular farms and individual people which enable native forest to persist. The thesis argues that persistence of native forest depends on the idiosyncrasies of material circumstance in the face of relentless pressure to transform the production landscape for economic purposes. The thesis concludes with a suggestion that policies to assist survival of native habitat in farmed landscapes need to include ones that encourage the odds in favour of fortuitous circumstance. In the face of globalised economic pressures, policies for conservation of native biodiversity need to involve a 'portfolio' of measures that apply to individual landowners and the wider rural community by recognising, assisting and rewarding management for non-production values.
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Mkhabela, Thulasizwe. "An econometric analysis of the economic and environmental efficiency of dairy farms in the KwaZulu-Natal Midlands." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6768.
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Thesis (PhD(Agric) (Agricultural Economics))--University of Stellenbosch, 2011.ENGLISH ABSTRACT: This dissertation is an analysis of dairy production in the Midlands district of KwaZulu-Natal. The analysis of agricultural production generally ignores undesirable outputs that are produced alongside desirable outputs. This research attempted to integrate a model of nitrate leaching from dairy production into a multiple input/output representation of the production technology, together with the analysis of technical efficiency. Estimation of both technical efficiency and environmental efficiency were done following the parametric econometric stochastic frontier (SFA) and the nonparametric mathematical programming data envelopment analysis (DEA) approaches. The study used unbalanced panel data from 37 individual highly specialized dairy farms for the period 2000 to 2007 and totals to 2130 observations. Production functions for the three outputs; milk, animals and farm produced feed, were fitted as a simultaneous system to model the farms’ production activities for the econometric SFA estimation of technical efficiency. A single equation reduced form was fitted as a frontier to allow for the estimation of the relative efficiencies of the individual farms. The results showed that with data this detailed it was possible to refine the model until it fits very tightly. Indeed, in the gross output model that includes cows, there was nothing left to call inefficiency and what was clearly a frontier becomes a mean response function. Technical efficiency was further calculated using the nonparametric DEA approach using the same dataset. The estimation of environmental efficiency was done using both SFA and DEA approaches. Undesirable emissions of nitrate were represented within the models by calculating nitrogen surplus (kg/ha) for each farm. This nitrogen surplus value was based on the intensity of the use of nitrogen containing inputs and the nitrogen content of marketable products specific information and from farm data which were used to calculate a farm nitrogen balance. The stochastic estimation of environmental efficiency used the same data that were used for the estimation of technical efficiency. However, for the DEA calculation of environmental efficiency, a balanced cross-section dataset for 34 farms participating in a pasture-utilization programme was used. This dataset was used because it had quantities of nitrogen fertilizer and other nitrogen containing inputs. Results indicate that there was minimal “over-usage” (over production) of milk thus reducing milk output alone will not lead to improved environmental efficiency. Farm size, herd size, and quantity of nitrogen fertilizer applied, present the best scope of reducing nitrogen surplus thus improving environmental efficiency of the dairy farms. Reducing imported feed by relying more on home grown feed can also help reduce nitrogen surplus. This is feasible because dairy farmers in the KwaZulu-Natal Midlands can produce most of the feed on farm. In summary, to obtain environmental efficiency milk production would have to be reduced by 80 litres per hectare; farm size by 73.69 ha; herd size by 33 cows, nitrogen fertilizer application by 74.3 kilograms per hectare; and imported feed by 13.4 kilograms of dry matter per hectare. The adjustments that would be required if environmentally inefficient farms were to adopt best practice technology and move towards their environmental production frontiers indicate that the production of pollutants (nitrogen surplus) could be reduced at negligible cost to milk production. The positive correlation between technical and environmental efficiencies indicates that improving environmental efficiency could be associated with improvements in technical efficiency. Thus, policies aimed at improving both efficiencies could have substantial rewards.
AFRIKAANSE OPSOMMING: In hierdie tesis word suiwelproduksie in die Middellande van KwaZulu-Natal van nader beskou. Met die ontleding van landbouproduksie, word ongewenste uitsette wat saam met gewenste uitsette geproduseer word, gewoonlik oor die hoof gesien. Hierdie navorsing poog om ’n model van nitraatvrylating uit suiwelproduksie in ’n veelvuldige inset/uitset verteenwoordiging van die produksietegnologie, te integreer by die analise van tegniese doeltreffendheid. In opvolging van die benaderings tot die parametriese ekonometriese stogastiese front (SFA) en die omvattingsanalise ten opsigte van die nie-parametriese matematiese programmeringsdata, is beramings van sowel tegniese as omgewings doeltreffendheid gedoen. In die studie is gebruik gemaak van paneeldata van 37 individuele hoogs gespesialiseerde melkplase vir die tydperk 2000 tot 2007, wat altesaam 2130 waarnemings beloop. Produksiewerksaamhede vir die drie uitsette; melkproduksie en diere- en plaasgeproduseerde voer, is as ’n gelyklopende stelsel ingepas om die plase se produksiewerksaamhede vir die ekonometriese SFA-beramings van tegniese doeltreffendheid weer te gee. ’n Enkele vorm om gelykmaking te verminder is daargestel as ’n front vir die beraming van die relatiewe doeltreffendhede van die individuele plase. Die resultate het bewys dat data van hierdie omvang dit moontlik maak om die model sodanig te verfyn dat dit net-net inpas. By die bruto uitset-model waarby koeie ingesluit is, was daar inderdaad niks wat op ondoeltreffendheid gedui het nie en wat eers ’n duidelike front was, het ’n betekenisvolle responsfunksie geword. Voorts is tegniese doeltreffendheid bereken deur aanwending van die nie-parametriese DEAbenadering, deur gebruik te maak van dieselfde datastel. Die beraming van omgewingsdoeltreffendheid is gedoen deur gebruikmaking van sowel SFA- as DEA-benaderings. Ongewenste nitraatvrylatings is in die modelle gevind deur die stikstofsurplus vir elke plaas te bereken (kg/ha) Die waarde van hierdie stikstofsurplus is gebaseer op die intensiteit van die gebruik van stikstofbevattende insette en bepaalde inligting oor die stikstof-inhoud van bemarkbare produkte, sowel as van plaas data, wat gebruik is om ’n stikstofbalans vir die plaas te bereken. Dieselfde data wat aangewend is vir die beraming van tegniese doeltreffendheid, is gebruik om die stogastiese beraming van omgewingsdoeltreffendheid te bepaal. Vir die DEA-berekening van omgewingsxii doeltreffendheid, is egter ’n gebalanseerde kruisseksie datastel gebruik vir 34 plase wat aan ’n weidingsbenuttings-program deelgeneem het. Die bepaalde datastel is gebruik omdat dit dosisse stikstofbemestingstof en ander stikstofbevattende insette bevat het. Resultate het op minimale “oorgebruik” (oorproduksie) van melk gedui en daarom sal die vermindering van slegs die melkuitset nie lei tot verbeterde omgewingsdoeltreffendheid nie. Plaasgrootte, kuddegrootte en die dosis stikstof wat toegedien is, verskaf die beste beeld van verminderde stikstofsurplus, wat dus tot verbeterde omgewingsdoeltreffendheid op melkplase lei. Die vermindering van ingevoerde voer deur meer op plaasgeproduseerde voer staat te maak, kan ook meewerk om stikstofsurplus te laat daal. Dit kan gedoen word omdat melkboere in die Middellande van KwaZulu-Natal die meeste van die voer op die plaas kan produseer. Ter samevatting kan gesê word dat om omgewingsdoeltreffendheid te bereik moet melkproduksie met 80 liter per hektaar verminder word, plaasgrootte met 73.69 ha, kuddegrootte met 33 koeie, stikstofbemestingtoediening met 74.3 kilogram per hektaar en ingevoerde voer met 13.4 kilogram droë materiaal per hektaar. Die aanpassings wat nodig sal wees indien omgewingsdoeltreffende plase beste praktyk-tegnologie sou aanvaar en sou aanbeweeg na hulle omgewingsproduksiefronte, dui daarop dat die produksie van besoedelende stowwe (stikstofsurplus) verminder kan word teen geringe koste aan melkproduksie. Die positiewe verband tussen tegniese en omgewingsdoeltreffendhede, dui daarop dat die verbetering van omgewingsdoeltreffendheid, in verband gebring kan word met verbeterings in tegniese doeltreffendheid. Beleid wat op verbetering van beide doeltreffendhede gemik is, kan daarom aanmerklike voordele inhou.
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Carter, Marc Robert. "A process for supporting natural resource management on farms : a case study in the Australian sub-tropical dairy industry /." [St. Lucia, Qld.], 2005. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe19115.pdf.
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Komani, Nosiphiwo. "Molecular characterization of the Mycobacterium tuberculosis complex (MTC) of raw milk from selected dairy farms in the Eastern Cape." Thesis, University of Fort Hare, 2013. http://hdl.handle.net/10353/d1013157.
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Tuberculosis (TB) is an ancient infectious disease that has been infecting different populations around the globe and it has also been considered as one of the most successful human and animal disease. TB found in animals such as cattle and other known bovids is known as bovine tuberculosis. Bovine tuberculosis (BTB) is an infectious disease found in cattle mainly caused by Mycobacterium bovis. M. bovis is a member of the Mycobacterium tuberculosis complex (MTC) together with M. tuberculosis, M. africanum, and M. canetti where the natural host is humans; whereas M. caprae, M. microti and M. pinnipedii usually have animals as their natural host. In this study the molecular characterization of the MTC from cow milk in the Eastern Cape was investigated. One hundred and twenty samples (40 ml each) were collected from three dairy farms in the Eastern Cape, South Africa. These samples were processed using a modified Petroff decontamination method. Sample processing was followed by DNA isolation using a Zymo Bacterial/Fungal DNA Kit and the amplification and detection of the MTC was done using the Seeplex MTB Nested ACE assay. The drug susceptibility tests were done using GenoTypeMTBDRplus assay which detects mutations and resistance to INH (isoniazid) and RMP (rifampicin). The milk isolates were further analyzed using a spoligotyping method which is based on the PCR amplification of a highly polymorphic direct repeat locus in the M. tuberculosis genome which detects and types the MTC. A percentage of 20.8 % samples were found to be positive for MTC using the Seeplex MTB Nested ACE assay. There were 42.1 % samples that were resistant to both INH and RMP with the rest sensitive to either INH or RMP. The spoligotyping method showed that 78.3 % samples resembled Family 33 strains and the rest (21.7 %) resembled a spoligotyping signature known to be that of M.africanum. Both these strains belong to the Ancestral lineage with Indo-Oceanic and West Africa 2 lineage. The outcomes of our study showed that molecular methods for detection of MTC can be applied directly on milk samples without the need for culturing.
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Boda, Gayatri. "Benchmarking dairy information using interactive visualization for dairy farm decision making." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=97910.
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The main goal of this research was to explore the use of benchmarking in the dairy industry. This includes descriptions of the various sectors in North America where benchmarking has been used successfully on a continuous basis or in research. Benchmarking methods that are currently used in the Quebec dairy industry are examined. An improvement to such methods is proposed through the use of visualization, coupled with interactivity, and with a focus on adaptability and usage. The advantages of such an interactive tool are discussed in light of on-farm decision-making, and a further use of visual slider applications is described to help with parameters of known economic importance.
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Bakhshoodeh, M. "Production efficiency in Iranian intensive dairy farming." Thesis, University of Aberdeen, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.592099.
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Since the 1990s, the number of intensive dairy farms in Iran has rapidly increased to supply milk to the growing cities. As a result, total production of milk has increased, but scarcities still exist in some regions of the country. Since resources such as feedstuffs are limited, and considerable investment will be required to establish these new farms, the question of production efficiency in Iranian dairy farming seems an important one. Measuring the level of production efficiency, determining the sources of inefficiency, and proposing possible ways of improving the efficiency of the intensive dairy farms are the main aims of this study. In addition to simple measures of partial productivities and profitabilities, a stochastic transcendental frontier production function was estimated, using a single-stage approach to measure overall technical efficiency and its components, and a frontier profit function was used to measure the economic efficiency of individual intensive dairy farms. The latter function was evaluated first with the current distorted prices of milk and concentrates as well as the market prices of other dairy inputs and outputs. However, this frontier led to overestimation of economic efficiency due to ignoring input-price and output-price inefficiencies. To deal with this problem, the frontier was re-evaluated with expected prices defined as fractions of the observed prices of inputs and outputs. In order to investigate the way in which farmers combine dairy inputs, an index of allocative efficiency was also calculated and discussed. All the indices were then compared between the farms specified by factors such as herd size, proportion of pure cattle, etc. The results showed that production efficiency of the intensive dairy farms in Iran can be improved by expanding the proportion of purebred animals, particularly in large farms, and by using as much of the existing capacity of farms as possible.
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Soteriades, Andreas Diomedes. "Trade-offs in sustainable dairy farming systems." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/18753.
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A key challenge facing dairy farming is to meet the increasing demand for dairy products from a growing and more affluent global population in a period of unprecedented socio-economic and environmental change. In order to address this challenge, policies are currently placing emphasis on ‘sustainable intensification’ (SI), i.e. producing ‘more’ outputs and services with ‘less’ resources and environmental impacts. Determining whether or not SI can deliver greater yet sustainable dairy production requires understanding of the relationships between sustainability pillars (environmental; economic; and social) and farm aspects (e.g. on-farm management; and animal productivity) under particular farming systems and circumstances (e.g. regional bio-physical conditions). Trade-offs between pillars and aspects is inevitable within a farming system. Many widely-used assessment methods that aim to measure, scale and weight these pillars and aspects are unable to fully capture trade-offs between them. The objectives of this thesis are: 1) to identify key trade-offs in dairy farming systems to inform greater yet sustainable food production; and 2) to introduce models and methodologies aiming at a more holistic measurement and better understanding of dairy farm sustainability. This thesis assesses the sustainability of French and UK dairy farming systems via a farm efficiency benchmarking modelling framework coupled with statistical analyses. It explores the relationships between pillars, aspects and technical, economic and environmental performance; and identifies important drivers/differentials in dairy farm efficiency. Importantly, it also suggests ways in which farm inputs and outputs can be adjusted so that improvements in environmental, technical and economic performance become feasible. Efficiency benchmarking was performed with the multiple-input – multiple-output productive efficiency method Data Envelopment Analysis (DEA). DEA calculates single aggregated efficiency indices per farm by accounting for several farm inputs and outputs which the DEA model endogenously scales and weights. In this work, the notion of farm inputs and outputs was extended to also include ‘undesirable’ outputs (greenhouse gas emissions) and environmental impacts (e.g. eutrophication, acidification etc.) of dairy farming. The DEA models employed belong to the family of ‘additive’ models, which have several advantages over ‘traditional’ DEA models. These include their ability (i) to simultaneously increase outputs and reduce inputs, undesirable outputs and environmental impacts; (ii) to identify specific sources of inefficiency. These ‘sources’ represent a farm’s shortfalls in output production and its excesses in input use and/or in undesirable outputs and environmental impacts, relatively to the other farms; (iii) to position undesirable outputs in the output set rather than consider them as inputs or ‘inverse’ outputs; and (iv) to rank farms by efficiency performance. Importantly, this thesis also proposes a new additive model with a ranking property and high discriminatory power. In a second stage, DEA was coupled with partial least squares structural equation modelling (SEM) so as to develop and relate latent variables for environmental performance, animal productivity and on-farm management practices. The results suggested that the efficacy of SI may be compromised by several on-farm trade-offs between pillars, aspects and farm inputs and outputs. Moreover, trade-offs depended on particular farming systems and circumstances. Increasing animal productivity did not always improve farm environmental performance at whole farm-level. Intensifying production at animal and farm-levels, coupled with high reliance on external inputs, reduced farm environmental performance in the French case, i.e. a significant negative relationship was found between intensification and environmental performance (SEM path coefficients ranged between -0.31 and -0.57, p < 0.05). Conversely, in the UK case, systems representing animal-level intensification (via genetic selection) for increased milk fat plus protein production performed better, on average, than controls of UK average genetic merit for milk fat plus protein production in terms of technical efficiency (DEA scores between 0.91– 0.92 versus 0.78–0.79) and environmental efficiency (scores between 0.92–0.93 versus 0.80), regardless of whether on a low-forage or high-forage diet. The levels of inefficiency in (undesirable) outputs, inputs and environmental impacts varied among farming systems and depended on the regional and managerial characteristics of each system. For instance, in France, West farms had higher eutrophication inefficiencies than East farms (average normalized eutrophication inefficiencies were, respectively 0.141 and 0.107), perhaps because of their more intensive production practices. However, West farms were more DEA-efficient than East farms as the former benefited from bio-physical conditions more favourable to dairy farming (mean DEA score ranks were 97 for West and 83 for East). Such findings can guide policy incentives for SI in different regions or dairy systems. The proposed modelling framework significantly contributes to current knowledge and the search for the best pathways to SI, improves widely-used modelling approaches, and challenges earlier findings based on less holistic exercises.
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Hart, James Andrew. "Information as a service for dairy farmers." Thesis, Nelson Mandela Metropolitan University, 2017. http://hdl.handle.net/10948/16000.
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Communication with an organisation’s customers has become one of the most important factors that play a role in doing business today. Organisations that supply their customers with correct and different kinds of information create customer loyalty. Dairy farmers are no exception to the rule, because of the ongoing planning that dairy farmers need to do on a daily basis. Dairy farming in South Africa is extremely price sensitive and therefore information that can help in decision making plays an important role in making the right decision at the right time. The Internet has become an essential environment where information is readily available to anyone who has access to the technologies, such as smartphones, computers and tablets. Thus, it will be beneficial for both the organisation and the dairy farmer to have relevant information available on the organisation’s website. The information that is made available to the dairy farmers on these websites needs to be updated on a daily basis. The information must be relevant to dairy farming and must provide additional information besides the information that the specific organisation specialises in. Information as a Service (IaaS) for Dairy Farmers in South Africa is the focus of this research. The purpose of the investigation is to provide a means of providing the information needed by dairy farmers in South Africa, to enable them to make the right decisions on an operational level. The empirical data were collected, analysed and interpreted. From these findings a proposed communications framework is created to assist organisations to better communicate with dairy farmers in South Africa. The purpose of this research study is to design a framework which will provide IaaS to dairy farmers in South Africa. The research determined the different ways in which organisations can communicate with dairy farmers and the best time period in which that communication should take place for each specific communication strategy. Therefore, the aim of the research study was to determine the best ways to communicate with dairy farmers. A clear knowledge of the technologies that dairy farmers use to manage information was determined by the research study. The required information that dairy farmers need to make the correct decisions suitable for the requirement of farming on a practical level was determined by the research study.The proposed framework on Information as a Service for Dairy Farmers could help organisations to supply dairy farmers with the right information at the right time. The proposed framework will assist organisations dealing with dairy farmers easier and will also assist farmers, because the information provided as a service will be relevant to dairy farming. The treatise is an exploratory, mixed method research study which consists of literature reviews, surveys and cross-sectional studies. Secondary resources was used to conduct literature studies to determine the information needed by dairy farmers. A questionnaire was compiled from existing questionnaires as well as from literature studies and was completed by the respective respondents in the dairy farming community. The survey also consists of questions that determine what dairy farmers think about the service they receive from the organisations that they deal with. A cross-sectional study was used to compare the information needed specifically by pasture-based dairy farmers in relation to total mixed-ration-based dairy farmers. Both Descriptive and Inferential Statistical methods will be used for the analysis of the data. The communication systems can vary from Self-Help Groups to Mobile Technology. The type of communication system will depend on the systems that the organisation have available for their customers. The timing of communication with dairy farmers needs to be convenient and depends, according to literature, on the type of social networking that the organisation might use. An organisation that deals with dairy farmers needs to decide which Social Media site is most suitable when it needs to communicate with dairy farmers. The technology used to access information consist of Laptops, Smart Phones, Tablets and Desktops. Agricultural organisations provide information which dairy farmers need, to give them the correct guidance in performing good farming practices in order to produce safe, high-quality milk. The study will conclude with the development of a proposed communications framework where agricultural organisations can provide information as a service to dairy farmers.
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Akil, Juma Malik. "Small-scale dairy farming in Zanzibar : studies on systems and feeding of dairy cows." Thesis, University of Reading, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.433452.
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Shelley, Anthony N. "INCORPORATING MACHINE VISION IN PRECISION DAIRY FARMING TECHNOLOGIES." UKnowledge, 2016. http://uknowledge.uky.edu/ece_etds/86.
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The inclusion of precision dairy farming technologies in dairy operations is an area of increasing research and industry direction. Machine vision based systems are suitable for the dairy environment as they do not inhibit workflow, are capable of continuous operation, and can be fully automated. The research of this dissertation developed and tested 3 machine vision based precision dairy farming technologies tailored to the latest generation of RGB+D cameras. The first system focused on testing various imaging approaches for the potential use of machine vision for automated dairy cow feed intake monitoring. The second system focused on monitoring the gradual change in body condition score (BCS) for 116 cows over a nearly 7 month period. Several proposed automated BCS systems have been previously developed by researchers, but none have monitored the gradual change in BCS for a duration of this magnitude. These gradual changes infer a great deal of beneficial and immediate information on the health condition of every individual cow being monitored. The third system focused on automated dairy cow feature detection using Haar cascade classifiers to detect anatomical features. These features included the tailhead, hips, and rear regions of the cow body. The features chosen were done so in order to aid machine vision applications in determining if and where a cow is present in an image or video frame. Once the cow has been detected, it must then be automatically identified in order to keep the system fully automated, which was also studied in a machine vision based approach in this research as a complimentary aspect to incorporate along with cow detection. Such systems have the potential to catch poor health conditions developing early on, aid in balancing the diet of the individual cow, and help farm management to better facilitate resources, monetary and otherwise, in an appropriate and efficient manner. Several different applications of this research are also discussed along with future directions for research, including the potential for additional automated precision dairy farming technologies, integrating many of these technologies into a unified system, and the use of alternative, potentially more robust machine vision cameras.
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Phuengwattanapanich, Surasak. "Sustaining dairy farming in Chiang Rai, Northern Thailand : an actor-oriented case study /." [St. Lucia, Qld.], 2006. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe19561.pdf.
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Erdenebolor, Baast. "Improving dairy farming a situation analysis of the dairy farming sector in Ulaanbaatar/Mongolia and development of strategies for extension work." Weikersheim Margraf, 2008. http://deposit.d-nb.de/cgi-bin/dokserv?id=3043510&prov=M&dok_var=1&dok_ext=htm.
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Erdenebolor, Baast. "Improving dairy farming : a situation analysis of the dairy farming sector in Ulaanbaatar/Mongolia and development of strategies for extension work /." Weikersheim : Margraf, 2007. http://deposit.d-nb.de/cgi-bin/dokserv?id=3043510&prov=M&dok_var=1&dok_ext=htm.
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SILVA, Soraya de Souza. "Indicadores técnicos e econômicos de sistemas de produção de leite da agricultura familiar no agreste de Pernambuco." Universidade Federal Rural de Pernambuco, 2015. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6892.
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The objective of this study was characterize and evaluate technological, husbandry and socio-economic profiles; identify and quantify benchmarks in dairy cattle production systems on family farms from Agreste Pernambucano. To identify and quantify the benchmark indicators was evaluated a database of the Academic Unit of Garanhuns/UFRPE, collected monthly and updated by the Foundation of the General Price Index Getúlio Vargas (IGP-FGV). The benchmark indicators correlated and their values in the four scenarios were: average milk production/lactating cow, average milk production; lactating cows/total herd; milk production/labor; milk production/area; average milk price; effective operational cost/milk price; total operational cost/milk price; total cost/milk price; labour spend/gross milk income; concentrate spend/ gross milk income; capital stock with land; capital invested per liter of milk and profitability. Economic indicators: average milk production, milk production by lactating cows, milk production by labour, milk production by area and milk price were positively correlated with the rate of return on capital invested in the dairy business. The indicators: effective operational cost, total operational cost and total cost/milk price, labour spend and concentrated spend/gross milk income, capital stock with land and capital invested per liter of milk were correlated negatively with rate of return on capital invested in the dairy business. For the analyzed familiar farms can become competitive and therefore profitable, it is required to identify and quantify benchmark indicators most correlated to profitability, aiming to diagnose the weaknesses of dairy farming in this region and increase animal production and land.
Objetivou-se caracterizar e avaliar os perfis tecnológicos, zootécnicos e socioeconômicos; identificar e quantificar indicadores-referência (benchmark), em sistemas de produção de bovinos de leite da agricultura familiar no Agreste Pernambucano. Para identificar e quantificar os indicadores-referência foram avaliados os dados contidos em um banco de dados pertencentes a Unidade Acadêmica de Garanhuns/UFRPE, coletados mensalmente e atualizados pelo Índice Geral de Preços da Fundação Getúlio Vargas (IGP-FGV). Os indicadores-referência correlacionados e seus respectivos valores nos quatro cenários de 4, 6, 8 e 10% ao ano foram: produção média de leite/vaca em lactação, produção média de leite; vacas em lactação/rebanho total; produção de leite/mão de obra; produção de leite/área; preço médio do leite; custo operacional efetivo/preço do leite; custo operacional total/preço do leite; custo total/preço do leite; gasto com mão de obra/renda bruta do leite; gasto com concentrado/renda bruta do leite; estoque de capital com a terra; capital investido por litro de leite e lucratividade. Os indicadores econômicos: produção média de leite, produção de leite por vacas em lactação, produção de leite por mão de obra, produção de leite por área e preço do leite foram correlacionados positivamente com a taxa de remuneração do capital investido na atividade leiteira. Os indicadores: custo operacional efetivo, custo operacional total e custo total pelo preço do leite, gasto com mão de obra e com concentrado pela renda bruta do leite, estoque do capital com a terra e capital investido por litro de leite correlacionaram-se negativamente com a taxa de remuneração do capital investido na atividade leiteira. Para que as propriedades familiares analisadas possam se tornar competitivas e consequentemente lucrativas são necessários a identificação e quantificação de indicadores-referência mais correlacionados com rentabilidade, com intuito de diagnosticar os pontos frágeis da pecuária leiteira nessa região e aumentar a produção dos fatores animal e terra.
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Wang, Jing. "Supplying cow's milk and soy milk to Beijing : a developmental dilemma /." Access Digital Full Text version, 1989. http://pocketknowledge.tc.columbia.edu/home.php/bybib/10857412.
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Chang, Pi-Lien. "Application of linear programming (LP) to Taiwanese dairy farming." Thesis, University of Newcastle Upon Tyne, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.427334.
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Weigel, Daniel J. "Relationships among estimated net income, herdlife and linear type traits in dairy cattle." Diss., This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-06062008-165443/.
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Ndambi, Oghaiki Asaah [Verfasser]. "Perspectives for dairy farming systems in Africa / Oghaiki Asaah Ndambi." Kiel : Universitätsbibliothek Kiel, 2009. http://d-nb.info/1019810998/34.
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Pietersma, Diederik. "Machine-learning assisted development of a knowledge-based system in dairy farming." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=38257.
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The goal of this research was to explore the use of machine learning to assist in the development of knowledge-based systems (KBS) in dairy farming. A framework was first developed which described the various types of management and control activities in dairy farming and the types of information flows among these activities. This framework provided a basis for the creation of computerized information systems and helped to identify the analysis of group-average lactation curves as a promising area of application. A case-acquisition and decision-support system was developed to assist a domain specialist in generating example cases for machine learning. The specialist classified data from 33 herds enrolled with the Quebec dairy herd analysis service, resulting in 1428 lactations and 7684 tests of individual cows, classified as outlier or non-outlier, and 99 interpretations of group-average lactation curves. To enable the performance analysis of classifiers, generated with machine learning from these small data sets, a method was established involving cross-validation runs, relative operating characteristic curves, and analysis of variance. In experiments to filter lactations and tests, classification performance was significantly affected by preprocessing of examples, creation of additional attributes, choice of machine-learning algorithm, and algorithm configuration. For the filtering of individual tests, naive-Bayes classification showed significantly better performance than decision-tree induction. However, the specialist considered the decision trees as more transparent than the knowledge generated with naive Bayes. The creation of a series of three classifiers with increased sensitivity at the expense of reduced specificity per classification task, allows users of a final KBS to choose the desired tendency of classifying new cases as abnormal. For the main interpretation tasks, satisfactory performance was achieved. For the filtering tasks, performance was fai
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Verwer, Stefan. "Pulverising pow(d)er the impact of incoherent European policies on dairy farmers in Tanzania and Jamaica /." Nijmegen : CIDIN, 2001. http://www.socsci.kun.nl/maw/cidin/publications/papers/op101.pdf.
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Thesis (Ph. D.)--Catholic University, Nijmegen, 2001.Title from initial PDF page image (viewed Feb. 16, 2005). "April, 2001." Includes bibliographical references (p. 155-166). Also issued in print format.
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James, Nicola Lewis. "The management and utilisation of white clover/perennial ryegrass and perennial ryegrass swards in relation to milk production and behaviour of dairy cattle." Thesis, Bangor University, 1992. https://research.bangor.ac.uk/portal/en/theses/the-management-and-utilisation-of-white-cloverperennial-ryegrass-and-perennial-ryegrass-swards-in-relation-to-milk-production-and-behaviour-of-dairy-cattle(1a1a64ab-31af-40f0-9dcc-fd88c15e8795).html.
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The literature concerning the nutritional content of white clover as a grazed herbage or conserved crop offered to dairy cattle and aspects of frothy bloat are reviewed. In the first nine week change-over design experiment the effect on milk production and behaviour of spring calving dairy cows grazing white clover/grass swards at contrasting sward heights were examined. Grazing the clover/perennial ryegrass sward to a height of 4 cm increased clover content, but reduced milk production. The 8 cm sward increased milk yields by 15.8%. This was accompanied by an increase in fat and protein yields. Grazing time and biting rate were increased on the 4 cm sward. Cows offered choice between sward types produced intermediate milk production values. A second change-over design experiment conducted over 12 weeks examined milk production and behaviour of spring calving dairy cows in early lactation grazing perennial ryegrass or White clover/perennial ryegrass swards alone or offered a choice between the two sward types or grazed on clover/perennial ryegrass during the day and perennial ryegrass at night. The inclusion of clover in the diet of the dairy cows significantly increased milk production, but reduced fat content. Protein content, fat and protein yields were increased. Cows offered a choice or mixed day and night grazing regime produced similar results, which were intermediate between the clover/ryegrass and perennial ryegrass treatments. Grazing time was increased on clover/perennial ryegrass swards. This experiment also 1 demonstrated the ability of cows to adjust their grazing time to maximise herbage intake. The third experiment compared the value in relation to milk production of three different buffer forages fed to spring calving dairy cows in late lactation grazing either clover/ryegrass or ryegrass swards. The forages were ryegrass and ryegrass/clover silages and ryegrass hay. Milk yield and composition were not affected by forage type, but intakes were higher for grass silage for cows grazing clover/ryegrass swards and visa versa. Hay OM intake was low. The final experiment conducted over the first 15 weeks of the grazing season studied the effect of energy:protein concentration of strawmix supplements on the productivity of spring calving dairy cows grazing a high white clover sward. Milk yields were increased by the provision of a strawmix supplement. The energy:protein ratio had a significant effect on milk composition except fat content. The high energy:high protein supplement tended to precipitate ruminal tympany (bloat), while the low energy:high protein supplement tended to reduce ruminal tympany on this clover based sward. These experiments have given some insight into the use of clover and stimulated questions which require further investigation to enable the farmer to safely incorporate clover into dairy farming systems.
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Kornalijnslijper, Esther. "Health and welfare of high producing dairy cows : effects of milk production level on adaptive capacity of cows assessed by hypothalamo-pituitary-adrenocortical function and severity of experimental Escherichia coli mastits = Gezondheid en welzijn van hoog-productieve melkkoeien /." [Utrecht : Utrecht University], 2003. http://www.mannlib.cornell.edu/cgi-bin/toc.cgi?5118378.
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Lampkin, Nicolas. "The economic implications of conversion from conventional to organic farming systems." Thesis, Aberystwyth University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.339273.
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Omoto, William Opiyo. "Smallholder dairy farming land use in the Nairobi metropolitan region Kenya." Thesis, Bangor University, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.516464.
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Coyle, Nelson. "Quota values and investment decisions of dairy farmers : a Delphi application." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=55699.
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Ashbaugh, Hayley Renee. "A Descriptive Survey of Dairy Farmers in Vinh Thinh Commune, Vietnam." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1266528992.
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Borchers, Matthew Richard. "AN EVALUATION OF PRECISION DAIRY FARMING TECHNOLOGY ADOPTION, PERCEPTION, EFFECTIVENESS, AND USE." UKnowledge, 2015. http://uknowledge.uky.edu/animalsci_etds/45.
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Precision dairy farming technologies provide a variety of functions to dairy farmers. Little is known about dairy producer perception of these technologies. A study was performed to understand dairy producer perception of parameters monitored by precision dairy farming technologies. Calving has potential to be predicted using these same parameters and technologies. A second study was performed using two commercially marketed technologies in calving prediction. In order for these technologies to generate accurate and useful information for dairy farm use, they must accurately quantify these parameters. The final study evaluated the accuracy of five commercially marketed technologies in monitoring feeding, rumination, and lying behaviors.
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Manzana, Nonzwakazi Patience. "Optimal feeding systems for small scale dairy herds in the North-West Province of South Africa." Diss., Pretoria : [s.n.], 2007. http://upetd.up.ac.za/thesis/available/etd-04112008-154155/.
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Bayemi, Pougue Henri Dieudonne. "Improving the management of dairy production systems in Cameroon." Thesis, Pretoria : [s.n.], 2009. http://upetd.up.ac.za/thesis/available/etd-05252009-225140.
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Truman, Carissa Marie. "AUTOMATED BODY CONDITION SCORING: PROGRESSION ACROSS LACTATION AND ITS ASSOCIATION WITH DISEASE AND REPRODUCTION IN DAIRY CATTLE." UKnowledge, 2019. https://uknowledge.uky.edu/animalsci_etds/96.
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Body condition scoring is a technique used to noninvasively assess fat reserves. It provides an objective estimate to describe the current and past nutritional status of the dairy cow and has been associated with increased disease risk and breeding success. Traditionally body condition scores are taken manually by visual appraisal on a 1 to 5 scale, in one-quarter increments. However, recent studies have shown the potential of automating the body condition scoring of cows using images. The first objective was to estimate the likelihood of disease development and breeding success, using odds ratios, associated with body condition score scored automatically at various points in lactation. The second objective of our research was to use a commercially available automated body condition scoring camera system to monitor body condition across the lactation period to evaluate differences between stratified parameters and to develop an equation to predict the dynamics of the body condition score. We found that poor body condition score at different times during the transition period are associated with increased disease occurrence and lower reproductive success. Automated body condition scoring (ABCS) curve during lactation was influenced by many factors, such as parity, ABCS at time of calving, disease occurrence, and milk production.
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Maysami, Mohammadali. "Energy efficiency in dairy cattle farming and related feed production in Iran." Doctoral thesis, Humboldt-Universität zu Berlin, Landwirtschaftlich-Gärtnerische Fakultät, 2014. http://dx.doi.org/10.18452/16931.
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Umfang und Intensität der Milchviehhaltung nehmen immer weiter zu, dies gilt auch für den Iran. Das Ziel dieser Studie waren die Ermittlung und Bewertung der Energieeffizienz der Milchviehhaltung und Futterproduktion im nordwestlichen Iran. Daten wurden auf einem Futterbaubetrieb und auf 24 Milchviehbetrieben im nordwestlichen Iran erfasst. Es wurde eine Untersuchungsmethode erarbeitet, die auf der VDI-Richtlinie 4600 Kumulierter Energieaufwand (KEA) und dem ISO-Standard 14044 Umweltmanagement – Ökobilanz basiert. Die Energieintensität (EI) im Futter (in MJ kg-1 DM) lag bei 2,92 für Luzerne, bei 6,76 für Gerste, bei 9,19 für Mais, bei 12,36 für Raps, bei 2,45 für Frühjahrsmaissilage, bei 4,45 für Sommermaissilage und bei 4,35 für Weizen. Die EI der energiekorrigierten Milch (ECM) lag bei 5,84±0,69 MJ kg-1, bei einer Milchleistung von 6.585±1.221 kg ECM Kuh-1 Jahr-1. Die Futter waren die Hauptquelle des Energie-Inputs in die Milchproduktion, mit einem Anteil von 79%. Innerhalb der in den untersuchten Betrieben vorgefundenen Milchleistung (3.860-8.320 kg ECM Kuh-1 Jahr-1) verringerte sich die EI bei steigender Milchleistung (-0,36 MJ kg-1 ECM je +1.000 kg ECM Kuh-1 Jahr-1). Die Allokation des Energie-Inputs führte zu einem Anteil von 83% auf dem Milch, 2% auf den Fleisch und 15 % auf den Wirtschaftsdünger. Die EI des mit Bullen bis zu einer Körpermasse von 400 kg produzierten Schlachtfleisches lag bei 75,4±9,1 MJ kg-1, bei Fortführung der Mast bis zu 700 kg lag sie bei 103,8±11,4 MJ kg-1. Die EI bei ersetzten, geschlachteten Milchkühen bei 16,3 MJ kg-1 Fleisch lag. Die Kalkulation der EI auf Basis des Brennwert der Futter, führte zu einer EI in der Milchproduktion von 23,7±3,37 MJ kg-1 ECM und in der Erzeugung von Bullenfleisch (400 kg Körpermasse) 314±25 MJ kg-1. Das Energie Output-Input-Verhältnis (OIR) lag zwischen 2,03 MJ MJ-1 für Körnermais und 7,75 MJ MJ-1 für Frühjahrsmaissilage. Während OIR in der Milch 0,55 MJ MJ-1 und in der Fleisch 0,12 MJ MJ-1 betrug.Dairy farming is increasing and becoming more intensive, attendant on higher energy inputs, also in Iran. The aim of this study was to estimate and assess the energy efficiency of dairy farming and the related feed production in north-western Iran. Data were gained from a com-pany producing feeds in north-western Iran, and from 24 dairy farms, also in north-western Iran for a period of three years. A method of investigation was devised based on the cumula-tive energy demand (CED) method introduced by VDI guideline 4600 and ISO standard 14044, which is used in life cycle assessment (LCA). The energy intensity (EI) in the feed production (in MJ kg-1 DM) was 2.92 for alfalfa, 6.76 for barley grain, 9.19 for maize corn, 12.36 for rapeseed, 2.45 for spring maize silage, 4.45 for summer maize silage and 4.35 for wheat grain. The EI for the energy corrected milk (ECM) was 5.84±0.69 MJ kg-1 with a ECM yield of 6,585±1,221 kg cow-1 yr-1. Feedstuff was the main source of energy input in milk production, with approximately 79% of the total energy input. The EI was decreasing with an increasing milk yield (-0.36 MJ kg-1 ECM per +1,000 kg ECM cow-1 yr-1), within the range of the milk yield found in the investigated farms (3,860-8,320 kg ECM cow-1 yr-1). The energy input was allocated to milk (83%), manure (15%) and meat (2%). The EI for boneless meat produced by bulls up to 400 kg body mass was 75.4±9.1 MJ kg-1 and produced by bulls up to 700 kg was 103.8±11.4 MJ kg-1. The allocated EI for meat of the replacing slaughtered cows was 16.3 MJ kg-1 of meat. By calculating the EI for milk production on the basis of the higher heating value (HHV) of feeds, it yielded in a mean EI of 23.7±3.37 MJ kg-1 ECM and an EI of 314±25 MJ kg-1 bull meat (400 kg body mass). Energy output input ratio (OIR) ranged between 2.03 MJ MJ-1 for maize corn and 7.75 MJ MJ-1 for spring maize silage production. While, in milk production OIR was 0.55 MJ MJ-1 and in meat production 0.12 MJ MJ-1.
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Guilhermino, Magda Maria. "The use of information systems by dairy farmers in England and Wales." Thesis, University of Reading, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.283608.
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Wassell, Timothy Robert. "An investigation into factors affecting the adoption of dairy herd health schemes by veterinary surgeons and dairy farmers in the United Kingdom." Thesis, University of Brighton, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.332220.
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Nelson, Carrie B. "Evaluation of information transfer between extension agents and dairy producers in Pennsylvania." Morgantown, W. Va. : [West Virginia University Libraries], 2008. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5637.
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Thesis (M.S.)--West Virginia University, 2008.Title from document title page. Document formatted into pages; contains x, 121 p. : col. ill. Vita. Includes abstract. Includes bibliographical references (p. 73-75).
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Legault, Benoit. "Measuring risk attitudes of Quebec dairy and hog producers." Thesis, McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=59539.
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The objective of this study is to investigate the degree of risk aversion towards investment in the Quebec hog and dairy sectors. The Direct Elicitation of Utility function was employed to determine producers' degree of aversion to risk. The Delphi technique was also introduced as a means of obtaining more refined and realistic information. The highly diverse risk attitudes which vary between extremely concave and extremely convex utility functions indicate, on average, a slightly risk averse behaviour for both farming groups. Dairy producers have 69% risk-averse, 10% close to risk-neutrality and 21% risk-loving individuals for the $100,000 investment game in the EP format. These figures are respectively 69 %, 6 % and 23 % for hog producers. Hog farmers are found more averse to risk than dairy producers, but more significantly at higher levels of investment. Integrated and non-integrated hog producers do not show any conclusive differences with respect to their risk preferences.
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Dodzi, Madodana Sunson. "Time budgets, avoidance distance scores-related behaviour and milk yield of pasture-based Jersey, Friesland and cross bred cows." Thesis, University of Fort Hare, 2010. http://hdl.handle.net/10353/474.
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Time budgets, avoidance distance scores-related behaviour and milk yield of pasture-based Jersey, Friesland and crossbred cows. by Madodana Sunson Dodzi The study was conducted at the University of Fort Hare farm to determine the time budgets, the avoidance-related behaviour variables and their relationship with milk yield in three pasturebased dairy genotypes: Jersey, Friesland and crossbreed. Twenty one clinically health dairy cows aged between 52 and 55 months, in mid lactation and comprising of seven cows from each genotype were used in the study. The time spent on different activities (grazing, lying down, standing and others) at pasture was recorded using stop watches across four seasons. The behavioural responses of the three genotypes to humans were determined by recording their avoidance distance scores (AD), exit speed (ES), pen scores (PS), pen behaviour scores (PBS), plat form scores (PLS) and the occurrence of kicking (KCK) and stepping (SPG) during milking on four consecutive days in four seasons. Time spent standing was higher (P < 0.05) for Friesland compared to Jersey and crossbred during the hot-wet season. In the cool-dry season the Jersey spent more time (P < 0.05) grazing than the other breeds. The Friesland and crossbred on the other hand devoted most of their time lying down compared to Jersey in the cool- dry season (P < 0.05). There were season differences in time spent on all activities (P < 0.05). Time spent on grazing was longest in post-rainy seasonal and lowest in hot- wet season (P < 0.05). The longest lying down period was observed in the hot-dry season and lowest in hot-wet season (P < 0.05). iii Daily milk yield Varied (P < 0.05) with genotype with the Friesland and Jersey producing higher yield than the crossbred. The highest amount was produced in hot-dry and the least in hot-wet season. Milk yield was positively correlated (P < 0.05) with lying down. Standing was negatively correlated with milk yield (P < 0.05). The Friesland had the highest avoidance distance scores (P < 0.05) and the Jersey had the lowest avoidance distance scores in all seasons. There was an association (P < 0.05) between genotype and exit speed scores, pen scores and stepping behaviour scores. The Friesland exhibited the highest exit speed scores than the other breeds. The Jersey had the lowest (P < 0.05) kicking behaviour scores. There was a relationship (r = 0.64) between avoidance distance scores and exit speed. Exit speed scores were correlated with pen score(r= 0.23). Milk yield was significant related (r= 0.17) to the occurrence of kicking behaviour. The genotypes showed different levels of sensitivity to season and milk yield was influenced by breed and season. It can be concluded that time budgets vary with season and farmers need to adopt measures that buffer the effect of season on welfare of dairy cows. It can also be concluded that avoidance distance scores differs according to genotype with Jersey being more confident to humans than other two breeds. It is therefore recommended that provision of shades or cooling mechanism should be adopted to buffer the effects of hot-wet season. Improving quality of feed during the cool-dry season may be critical for Jersey cows. Finally positive handling of the dairy cows is recommended in order to improve the welfare and milk yield of pasture based dairy cows.
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Jiang, Nan. "Efficiency analysis of NZ dairy farming and the issue of climate change policy." Thesis, University of Auckland, 2011. http://hdl.handle.net/2292/10210.
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The dairy industry is one of the most important and influential agricultural sector in New Zealand. Ensuring and enhancing the industry's productivity and efficiency represent a fundamental issue in New Zealand economic growth. September 2007, the NZ Labour Government proposed an Emission Trading Scheme as a way to comply with its Kyoto obligation, and it is the first country in the world that brings agricultural sector in. Given the emission intensive nature of dairy production, the industry is facing substantial increases in production costs and reduction in payout. The efficiency performance of dairy farming might also be affected as a result of changing farming practices. The overall objective of the thesis is to analyze the efficiency performance of NZ dairy farming, with implications regarding the climate change issue. Stochastic frontier analysis is applied to a panel of NZ dairy farms in 1998/99-2006/07. The structures of the existing production technology, technological change over time, and difference between South Island and North Island dairy farming are investigated within this stochastic frontier framework. An input efficiency measure is defined and evaluated at the expected cost minimizing input bundle. If the efficiency performance for emission intensive inputs could be improved, dairy farms will decrease their emissions without loss of production or additional costs. This input efficiency measure therefore allows for the combination of a farm's environmental pressure with its economic performance. Finally, the likely impacts of the ETS on dairy industry are discussed through an analysis regarding the point of obligation issue, and an illustration of changing farming practices when fertilizer price goes up as a result of emission charges.