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Faculty of AgriSciences
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Browsing by Issue Date

Browsing by Issue Date

Now showing items 1-20 of 38

Approaches towards a critical evaluation and update of the red list of South African Butterflies

Ball, Johathan Bradford (Stellenbosch : University of Stellenbosch, 2006-03)

Using the World Conservation Union’s (formerly the International Union for the Conservation of Nature) IUCN 2001 categories and criteria, the conservation status of the South African butterfly fauna has been reassessed. ...
Assessment of quantitative and genetic molecular variation of Acacia karroo in two extreme populations

Bayonne Mboumba, Georges (Stellenbosch : University of Stellenbosch, 2006-03)

Acacia karroo is widespread in southern Africa and displays remarkable phenotypic plasticity over its geographical range. However, it is currently unknown whether this phenomenon is merely phenotypic variation due to ...
Bacteriocins and bacteriocin producers present in kefir and kefir grains

Powell, Jillian Elizabeth (Stellenbosch : University of Stellenbosch, 2006-03)

Kefir is a traditional fermented milk that is carbonated, has a sharp acidic taste, yeasty flavour and contains a low percentage alcohol (less than 2% (v/v)). The beverage is manufactured by fermenting milk with Kefir ...
Canopy manipulation practices for optimum colour of redglobe (V.Vinifera L.)

Strydom, Janene (Stellenbosch : University of Stellenbosch, 2006-03)

Under certain South African conditions, Redglobe develops a colour that is too dark and thus unacceptable for the Far Eastern markets. These markets require a pink colour instead of a dark red colour. The cultivation of ...
Detection and isolation of thermophilic acidophilic bacteria from fuit juices

Duvenage, Wineen (Stellenbosch : University of Stellenbosch, 2006-03)

Fruit juices were until recently considered to only be susceptible to spoilage by yeasts, mycelial fungi and lactic acid bacteria. Spoilage by these organisms was prevented by the acidic pH of fruit juices and the ...
Development and effect of an N-3 fatty acid-rich spread on the nutritional and cognitive status of school children

Dalton, Annalien (Stellenbosch: University of Stellenbosch, 2006-03)

Long-chain polyunsaturated fatty acids (LCPUFA), especially the n-3 LCPUFA metabolic products eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) play an important role as regulators in many biological processes. ...
The development, implementation and evaluation of a housing education literacy programme for semi-literate recipients of government subsidised housing

Venter, Maria Dorothea (Stellenbosch : University of Stellenbosch, 2006-03)

In the ten years since the inclusive elections of 1994, the South African government has created an international precedent in the housing field. It is widely acknowledged that in this period it has delivered more subsidised ...
Development of a pest management system for table grapes in the Hex River Valley

De Villiers, Marelize (Stellenbosch : University of Stellenbosch, 2006-03)

A study was performed to develop a generic pest monitoring system for sampling the main table grape pests in vineyards in the Hex River Valley, Western Cape Province of South Africa. The presence of phytophagous and ...
The effect of oxygen on the composition and microbiology of red wine

Du Toit, Wessel Johannes (Stellenbosch : University of Stellenbosch, 2006-03)

The winemaking process involves different complex chemical and biochemical reactions, which include those of oxygen (O2). Oxygen can come into contact with the wine through various winemaking procedures and can be used ...
Effects of gaseous emissions from the Namakwa Sands Mineral Separation Plant near Lutzville on the adjacent succulent Karoo vegetation : a pilot study

Lukama, Beatice M. K. (Stellenbosch : University of Stellenbosch, 2006-03)

A pilot study was conducted at the Namakwa Sands Mineral Separation Plant, to investigate the effects of acidic gaseous emissions from the Mineral Separation Plant on the adjacent Succulent Karoo vegetation. Sulphuric ...
Enhancement of beef by means of infusing a phosphate and lactate blend

Vermaak, Annerien (Stellenbosch : University of Stellenbosch, 2006-03)

Consumers demand beef products of consistent and satisfactory tenderness, acceptable meat colour, the necessary nutritional value, as well as being microbiologically safe. However, inconsistency in meat quality, and ...
Essential amino acid requirements for growth in woolled sheep

Nolte, Joubert van Eeden (Stellenbosch : University of Stellenbosch, 2006-03)

This project consisted of five studies. The objectives were to determine the essential amino acid (AA) requirements of growing woolled lambs (Merino and Dohne Merino) and the essential AA profile of duodenal digesta ...
The evaluation of Fourier transform infrared spectroscopy (FT-IR) for the determination of total phenolics and total anthocyanins concentrations of grapes

Lochner, Elana (Stellenbosch : University of Stellenbosch, 2006-03)

The assessments of grape and wine quality are complex issues and the wine industry needs more objective analysis of grape and wine quality. The standard quality assessment protocol for grading grapes at most wine cellars ...
Die gebruik van Mamalvite en Flavomisien in die grootmaak van suiwelkalwers

Vermaak, Maizie Maria (Stellenbosch : University of Stellenbosch, 2006-03)

South Africa produces only 0,50 % of the world’s milk. Although the number of milk producers is decreasing in South Africa, the milk production per se is increasing. The total number of small producers is decreasing while ...
Gustatory and olfactory feeding responces in Japanese koi carp (Cyprinus carpio)

Barnard, Philip (Stellenbosch : University of Stellenbosch, 2006-03)

Chemo-attraction and –stimulation facilitate the initial location (olfactory response) and final consumption (gustatory response) of food in the feeding process of fish. Chemo-attractants or chemo-stimulants is therefore ...
Improving the meat quality of Blesbok (Damaliscus Dorcas Phillipsi) and Springbok (Antidorcas Marsupialis) through enhancement with inorganic salts

Du Buisson, Petro-Mare (Stellenbosch : University of Stellenbosch, 2006-03)

This research had a dual purpose, firstly to study five muscles (M. biceps femoris, M. longissimus et lumborum, M. rectus femoris, M. semitendinosus and M. supraspinatus) of the blesbok (Damaliscus dorcas phillipsi) and ...
The influence of commercial tannin additions on wine composition and quality

Keulder, Daniel B. (Stellenbosch : University of Stellenbosch, 2006-03)

The quality of wine is influenced by numerous factors of which the grapes, winemaking techniques and effective quality control are to name a few. The use of new techniques should be cost effective and always have a positive ...
Investigating the high incidence of bone disorders in a broiler farm : a case study

Mkhize, Felicity Nomfuzo (Stellenbosch : University of Stellenbosch, 2006-03)

Rickets is described as a disease that affects young growing poultry. Poorly mineralized bones with thickened and irregular growth plates characterize it. The onset of rickets is characterized by a failure of mineralization ...
Liquid water flow and discolouration of wood during kiln drying

Scheepers, G.C. (Stellenbosch: University of Stellenbosch, 2006-03)

The discolouration of South African softwood during kiln drying can reduce the value of furniture grade lumber. Thermal discolouration of wood, as found due to heat treatment, produces a homogeneously browner colour in ...
Local capacity to manage forestry resources under a decentralised system of governance : the case of Uganda

Turyahabwe, Nelson (Stellenbosch: University of Stellenbosch, 2006-03)

This study aims at examining technical and institutional capacity in local organisations to manage decentralised forest resources in Uganda. Specifically the study assessed the roles, responsibilities, powers and legal ...