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Effect of pomegranate (Punica granatum L) peel powder meal on growth performance, gut integrity, haemato-biochemical indices, meat, and bone quality of broiler chickens
Get PDFThe objective of the current study was to investigate the overall response of broiler birds to varying dietary levels of pomegranate (Punica granatum L) peel powder meal (PPPM). A total of 432-day-old Cobb 500 broiler chicks were randomly divided into six experimental groups of four replications with 18 birds per replicate in a completely randomized design (CRD). The birds were fed isonitrogenous and isocaloric experimental diets designated as: T1-control diet with 0percent additives (negative control; NEGCON); T2- control diet supplemented with α-tocopherol acetate at 200g per ton (positive control; POSCON): T3, T4, T5 and T6-control diet supplemented with 2, 4, 6 and 8g/kg PPPM (PPPM2, PPPM4, PPPM6, PPPM8). The phytochemical, nutritional and antioxidant properties of the pomegranate peel powder were determined. Results showed that the South African-grown pomegranate peel (“Wonderful” variety) had rich protein and trace mineral contents. Higher (p 0.05). The dietary effects of PPPM supplementation on growth performance, digestibility, carcass, and organ weight indices of Cobb 500 birds were determined. The POSCON diet enhanced (p < 0.05) feed conversion ratio (FCR) at week 3. The average final body weight and average daily weight gain were highest (p < 0.05) in birds fed PPPM2 and PPPM4 diets, whereas birds fed PPPM2 diet had enhanced (p < 0.05) FCR and protein efficiency ratio when compared with birds on POSCON. Thigh and breast weights were highest (p < 0.05) in birds on PPPM4 and PPPM8 diets, whereas birds fed PPPM4 diet had enhanced (p < 0.05) nutrient digestibility compared with those on POSCON. The antioxidant status and breast meat quality of Cobb 500 broiler birds fed diets supplemented with PPPM were determined. Meat from birds fed PPPM8 diet had the highest (p < 0.05) thawing loss, while cooking loss was lowest (p < 0.05) in the PPPM2 group. The highest (p < 0.05) ability to scavenge ABTS [(2, 2-azinobis (3ethylbenzothiazoline-6 sulfonic acid))] radical cation (ABTS+) was recorded in the PPPM2 and PPPM4 meat while PPPM8 meat had increased (p < 0.05) catalase activity. The fatty acid composition, oxidative status, and drip loss in breast meat of Cobb 500 broiler birds fed graded levels of PPPM was determined. Meat from birds fed PPPM4 diet had the lowest (p < 0.05) margaric (C17:0) and arachidic (C20:0) acids, while meat from birds fed PPPM8 diet had higher (p < 0.05) levels of eicosadenoic (C20:2, n-6) and arachidonic (AA, 20:4) acids. The POSCON had higher (p < 0.05) ability to reduce TBARS levels in meat on day-1 and day-16 of storage than the NEGCON and PPPM diets, whereas TBARS levels were lowest (p < 0.05) in PPPM6 meat on day-16. The gut pH, histology, haematology, serum-biochemical indices, and bone quality parameters of Cobb 500 broiler birds fed diets supplemented with PPPM was determined. Birds fed POSCON, PPM2 and PPPM4 diets had the lowest (p < 0.05) pH in the duodenum, jejunum, and caecum, whereas duodenal pH values were lowest (p < 0.05) in birds fed PPPM2 and PPPM4 diets compared with birds on NEGCON. Birds fed PPPM4 diet had the highest (p < 0.01) duodenal, jejunal and ileal villi height (VH), and the highest (p < 0.01) VH to crypt depth (CD) ratio in the duodenum, jejunum, and ileum. The lowest (p < 0.05) CD in the duodenum, jejunum and ileum was also recorded in birds fed PPPM4 diet. Birds fed PPPM8 diet had higher (p < 0.05) values for white blood cell count, red blood cell count, haemoglobin concentration and packed cell volume, whereas the lowest (p < 0.05) concentration of serum aspartate transaminase was recorded in birds fed PPPM4 diet. Birds on PPM4 diet had longer (p < 0.05) bones. Bone weight and bone breaking strength were highest (p < 0.05) in birds fed PPPM8 diet. Tibia zinc and iron concentrations increased as the inclusion levels of pomegranate peel powder meal increased. It was concluded that broiler birds require 4 g/kg pomegranate peel powder for enhanced growth performance, nutrient digestibility, gut histology, quality, and antioxidant enzyme activity of meat, whereas 8 g/kg pomegranate peel powder meal supplementation is required for enhanced heamato-biochemical indices, bone quality, fatty acid composition and lipid peroxidative parameters in broiler birds.Thesis (PhD) -- Faculty of Science and Agriculture, 202
Systematic review of genome-wide association studies of anxiety disorders and neuroticism
Get PDFObjectives: To summarise SNP associations identified by genome-wide association studies (GWASs) of anxiety disorders and neuroticism; to appraise the quality of individual studies, and to assess the ancestral diversity of study participants. Methods: We searched PubMed, Scopus, PsychInfo and PubPsych for GWASs of anxiety disorders, non-diagnostic traits (such as anxiety sensitivity), and neuroticism, and extracted all SNPs that surpassed genome-wide significance. We graded study quality using Q-genie scores and reviewed the ancestral diversity of included participants. Results: 32 studies met our inclusion criteria. A total of 563 independent significant variants were identified, of which 29 were replicated nominally in independent samples, and 3 were replicated significantly. The studies had good global quality, but many smaller studies were underpowered. Phenotypic heterogeneity for anxiety (and less so for neuroticism) seemed to reflect the complexity of capturing this trait. Ancestral diversity was poor, with 70% of studies including only populations of European ancestry. Conclusion: The functionality of genes identified by GWASs of anxiety and neuroticism deserves further investigation. Future GWASs should have larger sample sizes, more rigorous phenotyping and include more ancestrally diverse population groups
The contribution of international financial institutions to economic development in SADC countries
Get PDFAlthough African governments have a significant role to perform in developing the continent, International financial institutions (IFIs) also perform a dominant role in economic development but their role in African development is often viewed as controversial and contradictory. In the 20th century, the World Bank and the IMF were vital IFIs that characterised global policies that regulated global economies, subjecting weaker economies to SAP. This necessitated African states to borrow money to ensure stabilisation, liberalisation, deregulation and the privatisation of most sectors. This study econometrically examined the impact of foreign aid on economic development in SADC countries. Panel regression techniques were employed to analyse the contribution of international financial institutions to economic development in SADC countries. The results indicated that there is an insignificant relationship between foreign aid and economic development, which implies that foreign aid does not contribute to economic development in SADC countries. Based on this finding, the study recommends that Southern African Governments find ways of financing development that guarantee economic growth.Thesis (MA) -- Faculty of Business and Economic science , 202
Investigation of risky sexual behaviour amongst HIV/AIDS positive individuals on antiretroviral treatment in Buffalo City Metropolitan Municipality Eastern Cape Province, South Africa
Get PDFBackground: Human immunodeficiency virus (HIV)/ acquired immune deficiency syndrome (AIDS) is one of the major public health concerns. Antiretroviral treatments (ART) is available immediately for HIV-positive individuals but sexually transmitted infections are on the rise. The majority of HIV positive patients on ART are engaging in unsafe sexual practices. Purpose: The aim of this study was to investigate risky sexual behaviour of people on antiretroviral treatment regarding prevention. The study was conducted on adult clients in the Buffalo City Metropolitan Municipality. Methods: A quantitative and descriptive cross-sectional design was conducted whereby 304 patients who visited Nontyatyambo Health Centre were randomly selected. Data was entered and analyzed using Statistical Package for the Social Sciences (SPSS) 24. Simple descriptive statistics such as numbers, percentages and tables were used to characterise variables. A chi-square test was used to explore associations between dependent and independent variables. Test significance, confidence intervals and p-values of all the causes and contributory factors were set at 0.05. Results: Thirty two percent reported having sex with multiple sexual partners while 19percent reported never using a condom. Forty eight percent reported having had sexually transmitted infections since starting on ART. The median age (36 years (IQR: 31, 45) vs. 35 years (IQR: 26, 40)) of those who reported STIs was higher than the median age of those who did not report STI (p=0.012). Males (57percent, p=0.049), those who were employed (55percent, p=0.048), and those who were cohabitating (68percent, 0.030) were more likely to report STI. Similarly, those who had unprotected sex with a casual partner (62percent, p<0.001), and those who did not use a condom because a partner did not like it (71percent, p=0.001) were more likely to report STIs. A significant number of 32percent of the participants reported engaging in risky sexual practices while 48percent had reported an STI. Recommendations include educational outreach programmes and capacitation of health care workers with appropriate skills and tools.Thesis (MPH) -- Faculty of Health Sciences, 202
Promotion of Catalytic Oxygen Reduction Reactions
Get PDFThree ABAB-type cobalt meso-tetraarylporphyrins with fluorine (F-CoPor), acetic acid (AC-CoPor), and cyanoacetic acid (CN-CoPor) groups at the para-positions of phenyl rings at the 10,20-positions are synthesized and evaluated as catalysts for oxygen reduction reactions (ORRs). In density functional theory calculations, the frontier molecular orbitals of these complexes were found to be stabilized relative to model complexes with electron-withdrawing atoms or moieties on the meso-aryl rings. Electrochemical measurements suggest that electrodes with CN-CoPor (CN-CoPor/C) exhibit the most positive ORR potential values and the highest limiting current density in both acidic and alkali electrolytes, while the F-CoPor/C electrocatalyst exhibits extremely low ORR performance. The electron transfer numbers for the electrocatalysts are more than 3.0, indicating that a mixture of 2- and 4-electron transfer pathways occurs. The results demonstrate that coupling the hydrogen bonding properties and electron-withdrawing abilities through rational design of the substituent at the meso-position is an efficient way to modify the ORR performance
The design of a ritual precinct for the Zion Christian Church (ZCC) in the Swartkops Nature Reserve, Gqeberha:
Get PDFMan and nature have become disconnected over the years, as man relies more on the advances of the technical age and less on connections to the natural world. Through this disconnect, nature is bearing the consequences and is in a state of decay. As part of the cosmos, the natural envi-ronment is inherently imbued with sacredness; this sacred nature often manifesting itself within the very structure of the earth. Importance is then placed on how we po-sition ourselves and our holy places within their natural environment in order to set a precedent for the rest of our built environments. This treatise positions itself within ecology and the sacred. It focuses on the particulars of sacredscapes and pilgrimages within a context of Afri-can landscapes and African religions. This encompasses both the built and unbuilt elements of sacred architecture as well as sacredscapes through the reflection of cosmic rhythms, manifest order and harmony in order to create a holistic living organism aware of both the “real” and the sacred. Through its roots in holistic design, is sacredscapes align very closely to that of the ecological paradigm and the creation of integrated ecosystems. Sacred place often realised through the continuation of ritual practice. These rituals are a crucial part of African religions and most often find themselves in or associated with their natural environment. Thus, this is where the focus of the treatise lies - in the ritual cleansing ceremonies of the Zion Christian Church carried out in the Swartkops River. Ritual precincts and the creation of sacredscapes as a tool to reintegrate nature into the sacred will be explored. The intervention presents itself as an emergent ecosystemic architecture creating a sacred space, at the water’s edge, imbued with the Afro-Christian narrative of the Zion Christian Church.Thesis (MArch)-- Faculty of Engineering, the Built Environment and Technology, School of Architecture, 202
An analysis of the design of evaluation standards in the South African National Evaluation System
Get PDFGlobally, the development of evaluation standards and related quality assurance measures for managing and assessing evaluation quality has been the focus of much debate in the evaluation community. Especially in the current context of COVID 19, validating the quality of evaluation and research evidence to respond to the global pandemic and to socio-economic development has become more relevant. The question of evaluation quality has also become important in South Africa. This has resulted in a need for a National Evaluation System to manage the quality of the evaluation process and outputs; so that critical stakeholders can trust and use the evaluation evidence to measure performance and accountability of government. The South African National Evaluation System through the National Evaluation Policy Framework (NEPF) was adopted by Cabinet to guide the development and management of systemic and institutional evaluation policy and practice. This research responds to the conceptual gap in the design of the evaluation standards. The purpose of the research study is to analyse the design of evaluation standards in the South African National Evaluation System (NES). The research objectives of the study were: To analyse the design of evaluation standard in the South African National Evaluation System against international evaluation normative frameworks, To assess the theory underpinning the evaluation standards in the South African National Evaluation System. A qualitative research approach using a semi-structured interview was used to collect data from the eight respondents. The participants included in the sample were those who played a meaningful role in the design and application of the evaluation standards and the Evaluation Quality Assessment Tool (EQAT) of the NES. Content and thematic analysis were used to process and analyse the empirical data. The research study produced the following key findings. The design of the national evaluation standards as a component of the South African National Evaluation System was technically and conceptually clear about its context, rationale, purpose and its claims to manage the evaluation process to promote evaluation quality. Although most national evaluation standards of the NES were consistent with international frameworks, both national and international standards did not adequately address the development and transformative issues such as equity, diversity and inclusion. Finally, the discourse of paradigms was absent in the design of the standards. The national evaluation standards did not explicitly show the influence of the paradigm on methodological approaches, evaluation designs and methods. This theoretical gap is also evident in most of the international frameworks that the national standards were benchmarked against.Thesis (MPA) -- Faculty of Management and Commerce, 202
African clay pot with patterns in rust and brown
No full textAfrican clay pot with patterns in rust and brown.Donated/gifted to Nelson Mandela University ArchivesForms part of: Brigalia Bam collectio
African clay pot decorated with patterns in rust, brown and silver alloy
No full textAfrican clay pot decorated with patterns in rust, brown and silver alloy.Donated/gifted to Nelson Mandela University ArchivesForms part of: Brigalia Bam collectio
Development and training projects for poverty alleviation in Zwide township Qgeberha
Get PDFThe purpose of this study was to establish what projects have been implemented in Zwide Township in Gqeberha to alleviate poverty. Criteria for a successful poverty alleviation project were identified guided by the factors that determine poverty and the sustainability of the development and training projects in place to alleviate poverty. This study assessed existing projects to ascertain where they were successful and where they could improve. The study revealed that several projects and programmes have been planned in Gqeberha, specifically for Zwide Township, to alleviate poverty but according to Nelson Mandela Bay’s IDP (2017:04), several projects have been placed on hold due to a lack of funds. This was a qualitative study that employed documentary analysis to gather relevant data. The study concluded that the Nelson Mandela Bay Expanded Public Works Programme is currently in operation in Zwide Township and should continue to target unemployed youth and adults to alleviate poverty.Thesis (MA) -- Faculty of Business and Economic science, 202