• Effects of different stunning methods on carcass characteristics and the conversion of muscle to meat in commercially farmed Nile crocodiles (Crocodylus niloticus) 

  Van den Bergh, Natasha (University of Pretoria, 2024-07)

  From the 1950s to the 1960s crocodilians were hunted for their skins, which led to many wild populations being killed. Subsequently, all crocodilians were added to Appendix I or II of the Convention on International Trade ...
• In vitro maturation of Southern white rhino (Ceratotherium simum simum) oocytes 

  Herbst, Carla (University of Pretoria, 2024-09-05)

  Currently there are only two northern white rhinoceros left in the world, both are females. The decline in numbers, to the point of extinction, can be attributed to poaching, habitat destruction and poor reproductive ...
• Evaluation of nutritive value, in vitro fermentation, and antimethanogenic potential of native South African macroalgae species 

  Van Tonder, Mariska C. (University of Pretoria, 2024-02-12)

  Macroalgae are, as of yet, an untapped source of nutrients as well as a potential means by which to improve the sustainability of ruminant production. In this study the chemical composition and in vitro digestibility of ...
• The impact of limestone particle size on the digestibility of dietary calcium and phosphorus and phytase efficacy in broilers 

  Schoeman, Andre Joseph (University of Pretoria, 2024-07-22)

  The major feed ingredients used in broiler feed formulation are deficient in calcium (Ca), therefore Ca is supplemented, predominantly in the form of limestone, to meet the bird’s requirements. Previous research has ...
• Selection signatures associated with adaptation in South African Drakensberger, Tuli, and Nguni beef breeds. 

  Gomo, Maxman (University of Pretoria, 2024-02-23)

  Climate change has become a major factor influencing beef production systems. Sanga cattle are a unique genetic resource renowned for their adaptability to diverse climatic conditions. The advent of genomic technologies ...
• Effects of dietary supplementation of condensed tannin and calcium nitrate in total mixed rations on long-chain fatty acid metabolism and carcass characteristics of dohne merino lambs 

  Hasewinkel, Andrea Joyce (University of Pretoria, 2023-10-08)

  For a methane mitigation strategy to be sustainable it must either have no affect on product quality or have an added cobenefit in terms of improving the quality of meat. This study evaluated the effect of Acacia mearnsii ...
• Development of guidelines for improvement of reproductive management of smallholder beef cattle in five provinces of South Africa 

  Nkadimeng, Marble (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, ...
• Use of lipid encapsulated tannin to replace ionophore in mitigating enteric methane emission and manipulating dietary protein bypass in SA mutton merino sheep 

  Ibrahim, Shehu Lurwanu (University of Pretoria, 2024)

  The significant contribution of the livestock subsector to global warming and dietary energy loss as a result of enteric methane emission has drawn the attention of contemporary ruminant nutritionists to engage in more ...
• Selection signatures in geographically separated Hereford populations 

  Croucamp, Chantelle (University of Pretoria, 2023-08-30)

  Genomic differences between geographically separated Hereford populations may be characterised by using genomic diversity parameters, providing insight into different genes responsible for variation in traits of economic ...
• The assessment of the genetic improvement of South African composite breeds and their respective foundation breeds 

  Sithole, Phillipine (University of Pretoria, 2023)

  South Africa (SA) has a diverse climate that poses potential challenges for future beef production. Different composite breeds that combine the superior growth and beef-producing potential of the European Bos taurus breeds ...
• Characterisation of muscle calpain system SNPs and associations with production and beef quality traits in South African beef cattle following electrical stimulation and extended ageing 

  Basson, Annie (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 ...
• A landscape genomic approach to investigating growth performance in South African Bonsmara cattle 

  Visser, Charné (University of Pretoria, 2023)

  This study utilized a landscape genomic approach to investigate growth performance in Bonsmara cows from three South African provinces, Eastern Cape, Free State and North-West. Landscape genomics seeks to investigate ...
• Profiling the determinants of food insecurity in households keeping livestock in the Limpopo province 

  Mdaka, Mamphasha Phina (University of Pretoria, 2023)

  South African smallholder farmers help reduce rural poverty and famine. Smallholder farmers in remote places have several obstacles that limit their growth and food security contributions compared to commercial farmers. ...
• 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 ...

View more