• The prevalence of high rigor mortis temperature beef carcasses at abattoirs across South Africa 

  Masemola, Nthabiseng Innocentia (University of Pretoria, 2022)

  High rigor mortis temperature carcass conditions occur when the pH drops below 6.0 while the temperature is still above 35ﹾC. The aim of this research was to find out if there is an increase in the prevalence of high rigor ...
• Bromelain as a feed additive to promote broiler performance, nutrient digestibility and health 

  Sarrimanolis, Emmanuela (University of Pretoria, 2023)

  The broiler industry faces a growing pressure to reduce antibiotic growth promotors (AGP) from broiler feed due to public concern and the threat of antibiotic resistance. This has caused an upsurge in studies relating to ...
• Effect of extraction solvents and encapsulation on the efficacy of certain medicinal plant extracts to inhibit enteric methane emission 

  Ibrahim, Taofik Adam (University of Pretoria, 2023)

  A series of in vitro and in vivo experiments were conducted to evaluate the antimethanogenic properties of four medicinal plants (Aloe vera, Jatropha curcas, Moringa oleifera, and Piper betle) extracts as alternative rumen ...
• Influence of accessions, metabolite ion features, storage and processing conditions on efficacy of Moringa plant extracts to inhibit enteric methane emission 

  Zeru, Addisu Endalew (University of Pretoria, 2023)

  Developing healthier and more practically applicable intervention strategies for methane (CH4) inhibition emitted from ruminants has been a priority issue globally. Among the strategies, the use of natural medicinal plants ...
• Prediction of the nutritive value of South African maize hybrids for broiler chickens 

  Nkabinde, Sibongiseni Siphesihle Mndenuphele (University of Pretoria, 2023)

  Maize is a major component of broiler feed and consequently contributes largely to dietary energy values. Previous research showed nitrogen-corrected apparent metabolisable energy (AMEN) of maize varied due to differences ...
• Digestibility of dietary calcium and phosphorus in young and growing broilers supplemented with 1α-hydroxycholecalciferol in combination with phytase 

  Claassen, Gerhardus (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 ...
• Comparative analysis of on-farm greenhouse gas emissions from smallholder crop-livestock farming systems in Sub-Saharan Africa – A case study in Kenya 

  Ndung'u, Phyllis Wanjungu (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 ...
• Poultry thermoregulation in the heat : Seasonal acclimatization and partitioning of evaporative water losses 

  Tshingilane, Clinton Bukho (University of Pretoria, 2023)

  Abstract At high environmental temperatures (Ta), birds maintain homeostasis by dissipating heat via evaporative water loss (EWL). EWL is an important mechanism of heat dissipation by animals exposed to intense solar ...
• Assessment of behaviour and egg production of laying hens kept in cages and floor systems on a commercial farm in South Africa 

  Chilemba, Timothy (University of Pretoria, 2023)

  There is considerable pressure to eliminate the use of conventional cages in commercial layer production systems. Nonetheless, the assessment of alternative methods that can ensure the hen's ability to perform different ...
• The impact of myostatin variants in the South African Bonsmara and Drakensberger beef cattle breeds 

  Madula, Rendani Asnath (University of Pretoria, 2022)

  The Myostatin (MSTN) gene has been linked to the double muscling phenomenon, in which a succession of mutations rendersthe gene inactive and unable to regulate muscle fibre deposition effectively. This study aimed to ...
• Concentrate supplementation to Jersey cows grazing plantain and ryegrass 

  Pretorius, Zander (University of Pretoria, 2022-12-15)

  Title: Concentrate supplementation to Jersey cows grazing plantain and ryegrass When compared to TMR-based dairy production systems, pasture-based dairy production systems produce milk at a lower cost per litre. Nutrients ...
• The use of encapsulated condensed tannin extract and β-carotene supplementation to manipulate oxidative status, production and reproduction performance in sheep 

  Ahmed, Osman Merghani Makki (University of Pretoria, 2022)

  The study aimed to investigate the supplementation effect of Acacia mearnsii tannin extract and ß-carotene on the production and reproduction performance of sheep. To achieve this aim four studies (two experiments, one ...
• Changes in species composition, herbaceous biomass yield, soil seedbank and soil properties of semi-arid grassland subjected to different levels of rainfall interception and resting period 

  Magandana, Thabo Patrick (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 ...
• The effect of an ionophore, essential oils and a probiotic on the rumen and jejunal microbiome of South African Bonsmara cattle raised under feedlot conditions 

  Linde, Dina Alida (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 ...
• Production analysis of commercial and small holder pig farmers in the North West province of South Africa 

  Marcus, Kayleigh Sarah (University of Pretoria, 2022)

  There has been substantial growth in the small holder pig farming sector in South Africa. These farmers vary from market-orientated farmers to pig keepers with different available resources. There is a need to understand ...
• Genetic characterisation of the Tankwa Goat (Capra hircus) using genome-wide SNP data and the identification of genes associated with climate adaptation 

  Kropff, Anna Sophia (University of Pretoria, 2022-12-15)

  The feral Tankwa goat is a landrace breed of domesticated goat (Capra Hircus) originating from the Tankwa Karoo National Park. This landrace breed is being managed and conserved by the Northern Cape Department of ...
• The Effects of organic Iron source and L-Arginine on blood physiology linked to ascites in broiler chickens 

  Erasmus, Anatha (University of Pretoria, 2022)

  Commercial broiler breeding programs have greatly focused on increased growth rates, not considering the lack of pulmonary capacity to sustain this demand. Although not all broilers succumb to ascites the syndrome is still ...
• Improving broiler performance with dietary supplementation of a multi-enzyme complex at three different inclusion levels of phytase 

  Schutte, Elsabé (University of Pretoria, 2022)

  In South Africa, maize and soybean form the main component of broiler diets. The anti-nutritional properties in these ingredients negatively influence the performance of broilers. Non-starch polysaccharides and phytate are ...
• Physiological tissue losses of feedlot cattle transported for slaughter in South Africa 

  Bartman, Sune (University of Pretoria, 2022-12-06)

  Pre-slaughter loss of live mass due to transportation is a well-known occurrence in the beef production industry – predominantly regarding the economic sustainability thereof because it represents a potentially significant ...
• The effects of different zilpaterol hydrochloride feed supplements and extended ageing periods on the meat quality of feedlot bulls 

  Van Emmenis, Rochelle (University of Pretoria, 2022-12-15)

  The aim of this study was to evaluate the possible effects of two different zilpaterol hydrochloride (ZH) beta-agonists - with further focus being placed on the viability of the generic Grofactor® product when compared ...

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