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Browsing Theses and Dissertations (Animal and Wildlife Sciences) by Type "Thesis"
Now showing items 1-20 of 79
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(University of Pretoria, 2019)Nguni cattle are known for their qualities of adaptability to harsh environmental conditions. Research has shown that this breed of Bos taurus africanus has evolved over the years and in the process developed resistance ...
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(University of Pretoria, 2007-05-08)Mycotoxins have become an important issue for the grain industry and animal producers with a growing interest in the decontamination and remediation of highly contaminated feedstuffs. Practical methods to detoxify ...
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(University of Pretoria, 2015)The Large White and Landrace are the predominant pig breeds used in the South African industry. Due to consumer demands, selection of leaner pigs receive attention in selection programs. IGF2 is an imprinted gene, paternally ...
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(University of Pretoria, 2020)The public health landscape in South Africa today is characterised by a double-burden of nutritional challenges. Under-nutrition is prevalent, as is evident from the high levels of childhood stunting that are reported. ...
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(University of Pretoria, 2015)Beef carcass quality, yield and causes of condemnations in Ethiopia were investigated in this study. Data was collected from Abergelle, Adama, Elfora Bishoftu, Elfora Kombolcha, Elfora Melgawendo, Hawassa, and Mekelle ...
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(University of Pretoria, 2015)Shortage of quality feed is the major constraint in livestock production, particularly under smallholder subsistence farmer s conditions in sub-Saharan Africa. Livestock production under smallholder subsistence farmers ...
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(University of Pretoria, 2022)Climate change is expected to result in rainfall reduction in South African semi-arid and arid rangelands and may have severe ecological consequences. This rainfall reduction may cause irreversible and substantial ...
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(University of Pretoria, 2023)The genes of the muscle calpain system are the most important genes that affect beef tenderness and research on associations of these genotypes with beef quality traits in South African beef cattle is limited. Beef quality ...
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(University of Pretoria, 2023)This thesis addresses the contribution of the smallholder mixed crop-livestock systems to greenhouse gas emissions. The first objective of the thesis was to quantify region-specific enteric methane emission factors for ...
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(University of Pretoria, 2018)The global focus on a 1 000 days from conception to 2 years stresses the importance this period has on improving infant health. South Africa has focused on policies and actions to improve breastfeeding rates but specific ...
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(University of Pretoria, 2015)Large carnivores play a key role in regulating terrestrial ecosystems and their removal can cause effects that cascade through the lower trophic levels. Despite this, the geographic range and density of most large carnivore ...
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(University of Pretoria, 2020)The aim of this thesis was to evaluate alternative management options for the smallholder dairy cattle production system in South Africa (SA). Specific objectives included, were to benchmark cow performance in the smallholder ...
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(University of Pretoria, 2016)Introduction: Nutrition education (NE) is one of the most enduring, effective and economic interventions to fight malnutrition and food-related diseases through the impartation of nutrition knowledge and skills on healthy ...
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(University of Pretoria, 2024-02)Smallholder beef cattle farming in South Africa is characterized as an important free-range farming system with the potential to alleviate poverty and up-lift the economy of rural communities. In this farming system, ...
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(University of Pretoria, 2008-07-16)The objective of this study was to develop water quality guidelines for poultry reared under South African conditions and production systems. This was achieved by a modeling approach that was based on a survey of water ...
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(University of Pretoria, 1986)Afrikaans: 'n Dagsoomkaart <skaal 1:100 000) en 'n struktuurkaart <skaal ongeveer 1:225 OQO> van die geologie van die Maricodistrik, is saamgestel. 'n Verskeidenheid van afsettings- gesteentes van die Transvaal Opeenvolging ...
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(University of Pretoria, 2019)The present study investigated the effects of antioxidants supplementation, freezing extenders, cooling rates and equilibration times on Saanen buck reproductive performance and post-thaw sperm quality. For this reason, ...
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(University of Pretoria, 2023)1α-Hydroxycholecalciferol (1α-OH-D3) is a synthetic cholecalciferol derivative that is rapidly hydroxylated into 1α,25-dihydroxycholecalciferol, the biologically active form of cholecalciferol. 1α,25-Dihydroxycholecalciferol ...
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(University of Pretoria, 2022)Feed additives are commonly used to modify the rumen microbiome towards more energy efficient pathways, such as the production of propionate. The urgency for the replacement or decrease in use of antibiotic growth promoters ...
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(University of Pretoria, 2022-07)The objective of this study was to evaluate the effect of rumen undegradable protein (RUP) and rumen protected lysine (RPLys) and methionine (RPMet) supplementation on growth performance, blood parameters and carcass ...
Now showing items 1-20 of 79