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Theses and Dissertations (Animal and Wildlife Sciences): Recent submissions
Now showing items 341-360 of 393
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(University of Pretoria, 2011-07-04)Salmonella typhimurium (ST) infection not only causes salmonellosis in humans, but also can result in great economic losses in the typically narrow-margin, high-volume broiler business due to reduced growth rates and ...
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(University of Pretoria, 2010-10-04)Compared to natural selection, the use of artificial insemination (AI) and other reproductive technologies rapidly increase the rate of genetic change in any population. In order to achieve success with AI, the semen used ...
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(University of Pretoria, 2011-01-04)Salmonellosis is one of the most important foodborne zoonotic diseases throughout the world and poultry represents an important source of infection in humans. Chickens may become infected during incubation, in the brooding ...
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(University of Pretoria, 2011-07-04)The use of full fat soybeans (FFSB) in animal feeds has, to date, been limited due to the presence of anti-nutritional factors (ANF). It is, therefore, increasingly recognized that, if the full potential of full fat soybeans ...
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(University of Pretoria, 2010-09-28)Four trials were conducted to evaluate the effects of ensiling whole plant maize with wet distillers grains with solubles (WDGS) on its preservation and nutritive value. In the first study, WDGS was blended with whole maize ...
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(University of Pretoria, 2008-08-19)Rumen-undegradable protein might be the first limiting nutrient for high producing dairy cows receiving high levels of maize supplementation while grazing pasture. To test this hypothesis two trials were conducted using ...
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(University of Pretoria, 2008-08-19)The objective of this study was to compare prediction of meat tenderness by means of gene technologies (markers) with established physical estimates of meat tenderness. Weaned, young bulls (n = 60) were selected on phenotype ...
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(University of Pretoria, 2010-06-28)The Convention on International Trade in Endangered Species of Wild Fauna and Flora (C.I.T.E.S.) has always recognized Osteolaemus tetraspis osborni (Schmidt, 1919) as a geographic subspecies of the African dwarf-crocodile, ...
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(University of Pretoria, 2009-09-15)Thirty high-producing multiparous Holstein cows were used in a completely randomized block design to compare a lysine deficient total mixed ration, which was sufficient in methionine, to the same diet supplemented with a ...
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(University of Pretoria, 2009-09-16)The widespread increase in use of maize-based feedstuffs in California dairy cow rations has raised concerns of reduced efficiency of CP utilization due to the low lysine content of maize and maize by-products. The objectives ...
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(University of Pretoria, 2009-10-02)The purpose of this research was to study the effect of electrical stimulation of carcasses on the meat quality of impala (Aepyceros melampus). The impala is one of the most important species in game meat production. A ...
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(University of Pretoria, 2005-08-15)The aim of this study was to evaluate the effect of glycosylation on exogenous xylanase stability when incubated under proteolytic conditions. Xylanase produced by Trichoderma longibrachiatum, was purified using gel ...
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(University of Pretoria, 2008-08-20)In this study the mineral composition of ash from fireplaces at rural homesteads was determined to establish if such ash could be a source of minerals to goats. The mineral composition of ash collected from homesteads in ...
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(University of Pretoria, 2009-09-16)Two trial were conducted to determine the possible effects of season, protein supplementation, age and birth status on the reproduction rate (ovulation rate and rate of twinning) of ewes. In Trial 1 the weight, age and ...
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(University of Pretoria, 2012-08-08)DNA profiling of exhibits that originate from forensic stock theft cases is routinely used as a tool to link suspects to the crime or scene. DNA derived from aged or degraded samples is often highly fragmented which ...
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(University of Pretoria, 2010-06-17)Cheetah are difficult to census and as a result there is only a limited amount of information regarding the status of cheetah populations across South Africa making it difficult to identify and address potential threats ...
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(University of Pretoria, 2009-06-17)The occurrence of potentially hazardous chemical constituents (PHCC) in subterranean water and the divergent potential for bioaccumulation in different production systems, made it necessary to investigate the effect of ...
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(University of Pretoria, 2008-08-19)The Central Limpopo River Valley elephant population is a cross border population on which very little scientific data pertaining to numbers, distribution and demographic status is available. The total range was determined ...
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(University of Pretoria, 2008-07-03)This study presents an exploration of the structure, dynamics and utilisation of woody plants in vegetation units of northern Maputaland. Animal (in Tembe Elephant Park) and human (in the rural community of Manqakulane) ...
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(University of Pretoria, 2013-06-10)Hunger and malnutrition remain amongst the most devastating problems facing the world's poor and needy. About 80-90 million people have to be fed yearly and most of them are in developing countries in Africa. The majority ...
Now showing items 341-360 of 393