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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
21

Development and implementation of nutrion strategies to improve the application of a food-based dietary guideline for use by créche caregivers in Thulamela Limpopo Province, South Africa

Kwinda, Pfanani Charlotte 27 June 2011 (has links)
Many of the world’s children, particularly those living in developing countries, subsist on diets that seldom vary and often do not allow for an adequate intake of the complete range of nutrients required for healthy living. Of concern is the absence of regular consumption of fresh vegetables and fruit that provide vitamin A which, if deficient, impairs children’s growth and development. In South Africa about 21% of children under the age of six years attend crèche facilities on a daily basis. The nutritional state of meals provided to children at many crèches tends to lack micronutrients, particularly vitamin A. Vitamin A deficiency is the main nutritional problem facing crèche children in South Africa today. Underlying causes are unsatisfactory diets restricted in variety and minimal knowledge of optimal dietary practices, a situation exacerbated by a high incidence of food insecurity. Limpopo is a province seriously affected by vitamin A deficiency. A South African study, based on a quantitative research paradigm, was undertaken (April-September 2007) in Thulamela municipality with the aim of developing and implementing nutrition strategies to improve crèche children’s consumption of vitamin A-rich vegetables and fruit, as advocated by an officially recognised food-based dietary guideline. Through convenience sampling, 100 caregivers from 20 crèches in the study area responded to questionnaires and participated in a game. Ongoing observation continued. Information about the participants, their nutrition knowledge and the meals provided was collected following the triple-A cycle approach (assessment, analysis and action). The research process was structured in three phases. Phase one involved a situational assessment and analysis that provided baseline information. Limitations contributing to the problem under investigation were identified and data showed that the children’s intake of vitamin A from vegetables and fruit at crèches was low. This was found to be due to a lack of knowledge and information about vitamin A, coupled with the unavailability and inaccessibility of food primarily due to non-production and affordability. Food preparation, storage and preservation also posed challenges to caregivers. Using evidence from documented studies and the findings from phase one, nutrition strategies were developed and implemented in phase two. Caregivers were shown how to increase the availability and use of foods rich in vitamin A and were encouraged to grow, and use, both cultivated and non-cultivated vitamin A-rich vegetables and fruit. Furthermore, the concept of the food-based dietary guideline “eat plenty of vegetables and fruits everyday” was introduced to the caregivers and became part of the developed nutrition strategies. Follow-up data collected in phase three showed substantial advancement in caregivers’ knowledge and skills. Access, availability and utilisation of vitamin A-rich vegetables and fruit had improved markedly. Flourishing vegetable gardens, planned menus and well prepared meals were concrete evidence, and vegetables and fruit were more frequently served to children. Implementation of the developed nutrition strategies epitomised the envisaged outcome of this study. Based on the research results, important recommendations are made to enhance the appropriate consumption of vegetables and fruit rich in vitamin A, leading to a reduction in disease and death caused by vitamin A deficiency among children. / Dissertation (MConsumer Science)--University of Pretoria, 2010. / Consumer Science / unrestricted
22

Designing a food based strategy for the introduction of an unfamiliar food crop as a community based approach

Rajput, Innike January 2012 (has links)
Household food security has been described with a three-factor definition: 1) the availability of food, 2) the access thereto, and lastly 3) the food utilization patterns and practices. In previous research, both the availability and access to food were studied in a farming community in the Free State Province to understand how these factors contribute to household food security. However food utilization was not investigated at the time. Food consumption patterns of households deserve attention, particularly in relation to food gardens and nutrition, including the cultivation cycle, dietary norms and practices, and methods of food preparation and preservation. By studying utilization patterns of foods, the context of food insecurity and the resultant malnutrition can be better understood. The purpose of this study was to investigate whether the food utilization strategies of a known food crop (spinach) can be used to establish efficient utilization of a new, unfamiliar crop (orange-fleshed sweet potato) in a farm worker community. Three focus group interviews were conducted with a total of 21 participants to determine current food utilization patterns of spinach and orange-fleshed sweet potato (OFSP). The women were asked to describe how they currently utilize these crops in the same focus iv group discussion (although the focus was on the known crop (spinach)) to understand what actions they take during the process of utilization, from access to disposal. They were asked to describe which tools and methods they apply, and who participates in all these various activities. Subsequently, the respondents were asked to perform all these steps while being observed to record current practices. Data from the focus group interviews and the observations were transcribed and categorized under themes. It was found that in addition to a lack of dietary diversity and subsequent malnutrition found discovered in another study of this community, that they are also not optimally utilizing their food. This is as a direct result of lack of access to a variety of food due to monetary constraints, lack of nearby shops, a lack of cultivation and production education about crops that can be home-produced, and a lack of knowledge about nutrition and the importance of a varied diet. A food-based approach to improve the lack of knowledge of home-produced crops and nutrition was, consequently, the focus of this utilization strategy. This information was used to design a food-based strategy to improve the utilization of an unfamiliar crop (OFSP), in areas where the food crop was not being utilized optimally. Although the strategy was developed based on observations and lessons from one specific community, the principal findings were used to develop a strategy that is generic to the implementation of an unfamiliar food crop, and can then be refined for a specific community before implementation. A complete training manual was developed to complement the food-based strategy. The researcher then tested the strategy with agricultural extension officers who are active in communities where food insecurity and malnutrition exist during a training programme hosted by the Agricultural Research Council - Roodeplaat. The agricultural extension officers provided input on the strategy and identified areas for improvement. These recommendations were adapted in a manual to ensure that the developed strategy could be broadly implemented in other communities. The overall conclusion of the study is that it is necessary to investigate and understand all elements of the food utilization system to truly understand the reasons for observed behaviour, habits and practices. Planning and developing a nutrition education programme requires systematic analysis of nutrition and health-related problems in a given community. It is evident that each step of the utilization cycle is equally critical and should enjoy comparable attention to facilitate delivery of nutrient-rich foodstuffs to the end user. / Dissertation (MConsumer Science)--University of Pretoria, 2012. / gm2014 / Consumer Science / unrestricted
23

<b>Patterns of Household Food Acquisition, Individual Dietary Diversity, and Child Nutrient Intakes Among Households in Rural Tanzania: Results from the EFFECTS Trial</b>

Savannah F O'Malley (17537880) 04 December 2023 (has links)
<p dir="ltr">Undernutrition affects millions of children in low- and middle- income countries, causing poor growth, poor development, and increased risk of mortality. Many nutrition-sensitive interventions for rural areas increase household access to nutritious foods through increasing home production, a strategy that has small positive effects on child diets. However, there is growing evidence that local markets are also important for dietary quality. Despite the importance of rural markets, the rural food environment and food purchasing practices among rural households are not well-characterized in the literature. It is possible that promoting improved household food purchase practices is an effective method for improving child nutrition in rural areas. Tanzania experiences a high prevalence of undernutrition among children under the age of 5 years, particularly among rural populations. This dissertation utilizes data from the Engaging Fathers for Effective Child Nutrition and Development in Tanzania (EFFECTS), a cluster randomized controlled trial that was conducted in rural Mara, Tanzania. The EFFECTS trial promoted improved diets through both home production and through food purchases through a social and behavior change strategy. We measured changes in dietary diversity (a proxy for diet quality), children’s nutrient intake adequacy, and diversity of foods purchased and produced. This dissertation presents evidence that food purchase diversity is positively associated with dimensions of the rural food environment, including high market food diversity (+0.37 food groups, p=0.01), living within 30 minutes of a market (+0.36 food groups, p=0.001) and household purchasing power (+0.14 food groups per additional million Tanzanian shillings spent by the household, p<0.001). In turn, purchase diversity is positively associated with dietary diversity (b=0.22, p<0.001), and intake adequacy of folate, vitamin B12, and calcium (all p<0.05) among children 9-23 months. Promoting food purchase diversity was effectively integrated into the EFFECTS interventions, resulting in purchasing +0.54 food groups at endline compared to changes in the control (p<0.01), which mediated 25% of the total improvement in child dietary diversity. In contrast, production diversity was associated with increased intake adequacy of vitamin A only (p<0.05), households produced +0.44 food groups at endline compared to control (p<0.05), and this mediated 15% of the total improvement in child dietary diversity. These findings suggest that promoting diverse food purchases, alongside diverse home production, is an effective way to improve children’s diets in similar settings.</p>
24

Dietary diversity and food access of deep-rural households of Idutywa, Eastern Cape

Dlamini, N.E. 25 July 2014 (has links)
The objective of this research is to investigate the food security, food diversity and coping strategies used to access food in households in the Eastern Cape rural village of Timane in Idutywa, Eastern Cape, South Africa. A cross-sectional survey design was used in which a Coping Strategy Index questionnaire designed by Maxwell and Caldwell (2008) and a HDD questionnaire was used to gather data interviewing respondents. This study was conducted in the rural community of Timane which was divided into geographical groups from which household were randomly chosen. A total of 60 adults representing 60 selected households were interviewed to provide information on household dietary diversity. Data was collected on the socio-biographic and HHD parameters of households. Data was analyzed and presented as correlation, percentages, means and SDs. Up to 72% of household received state grants and the Spearman’s correlation between number of children and HDD score was r = 0.38 while that between number of adults in households and HDD score was r = -0.93. Food security in the Timane community largely depends on state grants and HDD increases moderately with the increase in children and decreases with the increase in adults per household. The majority of the households (72%) received state grants as a source of income within which old-age pensions constitute 28% and child grants 38%. The Spearman’s correlation coefficient between the number of children in households of respondents and CSI was 0.78 (P < 001) while that between the number of adults in households and CSIS was 0.2 (P < 001). Household in the rural community of Timane community were found to be food insecure and this gets severe with the increase in the number of children in households. / Life & Consumer Sciences / M.A. (Human Ecology)
25

Determinants and livelihood impacts of natural resource management strategies among smallholder farmers in Malawi

Koppmair, Stefan 04 May 2016 (has links)
No description available.
26

Exploring rural adolescents’ dietary diversity, ultra-processed food consumption, and relevant socio-economic correlates: a cross-sectional study from Matlab, Bangladesh

Islam, Mohammad Redwanul January 2019 (has links)
Background: Bangladesh is home to 36 million adolescents with the majority living in rural areas. Adolescence presents an additional window of opportunity to correct nutritional deficits among rural Bangladeshi adolescents. A high-quality, diverse diet is pivotal in this regard. Ultra-processed food (UPF) consumption is an emergent threat to public health. This study aimed to explore dietary diversity (DD) and UPF consumption in terms of gender and socio-economic stratification among rural adolescents in Matlab, Bangladesh. Methods: Adopting cross-sectional design 1441 adolescents were surveyed. Dietary diversity score and ultra-processed food consumption score (UFCS) were constructed through 24-hour recalls. Means and consumption proportions were compared across gender and socio-economic strata. Binary and ordinal logistic regression models were fitted to isolate socio-demographic variables associated with inadequate DD and higher UFCS respectively. Results: 43% of the adolescents had inadequate DD. Pro-boy gap in DD was evident, so was heavy reliance on rice and scant consumption of nutrient-rich foods. UPF consumption was low. Belonging to the richest and to food secure households were associated with lower odds of inadequate DD. Girls were more likely to have inadequate DD but less likely to have higher UFCS. Gender modified the effect of socio-economic status on UPF consumption. Conclusions: The diet of adolescents in Matlab lacked diversity, putting them at significant risk of nutritional deficiencies. Improving their DD requires pragmatic policies and tailored programs to tackle affordability and food insecurity issues, address social norms and intra-household dynamics that favor boys, and sensitize the adolescents to importance of consuming diverse diet. / 15-year Follow-up of MINIMat Trial
27

Assessing the access to nutritious food by households participating in the household food security short learning programme

Maluleke, Martha Nyeleti 02 1900 (has links)
South Africa ranks high among the developing countries with income inequality and household food insecurity is a major concern in the country. The overall objective of the study was to investigate access and practices, which lead to increasing household access to nutritious food by households. The students registered for the one-year course identified households in the Dysselsdorp settlement in the Western Cape, South Africa which they worked closely with in food gardening. Descriptive research methods were used to assess food access and identify the socio-economic and demographic variables for this study. Qualitative and quantitative methods were used to gather data, following the College of Agriculture and Environmental Sciences of the University of South Africa’s ethical protocol and guidelines. Data were collected in the middle and at the end of the coursework (mid-term and end-term). A semi-structured baseline questionnaire was used to interview households and to conduct focus group discussions with the students. The baseline questionnaire consisted of five sections, namely the socio-demographic information, food utilization, food availability, food accessibility and the living standards measurement scores. A stratified random sampling strategy was used to select 30 students to participate in the focus group discussions. The students identified three or four households, which they worked closely with and those households were purposively selected for the baseline interviews. vi Data were analyzed using the Statistical Package for Social Sciences programme (IBM SPSS 24). Descriptive statistics (mean, frequencies and standard deviation) were used to compare the data. The 24-hour recall and 7 days food frequency recall was used to assess the household food consumption patterns. Qualitative data were recorded, transcribed, then themes and connections were used to explain the data and correlated with the objectives of the study. The socio-demographic data showed that most of the respondents were above 50 years old and they had an average number of 5.2 members. Thirty-one percent (31%) of the household heads had reached grade 8 to 12 in school, while 69% were those who had not gone to school and completed up to grade 7. Majority of the households relied on social grants as a source of income. The amount of money spent on food by the households in a month was between 0-R500 (63%) and 37% spent above R500 on food. Women participated more in food-related activities than men and the gardening activities were shared by the members of the households. The HDDS is a qualitative method for food consumption, which reflects household access to a variety of foods. The HDDS consists of food groups that the household has consumed over the past 24-hours and it is calculated based on the 12 food groups from the food consumed which are summed up; the mean score is used to determine diet diversity (Swindale & Bilinsky, 2006). The findings in this study is that the average HDDS increased from 5.6 to 6.4, which is above the recommended cut-off point for dietary quality (Steyn et al., 2006). Both the 24-hour recall and 7 days food frequency reported a high consumption of carbohydrates and meat, and less consumption of other food groups such as milk, vii eggs, fruits and vegetables were noted. The households relied on a variety of coping strategies such as asking for food from family or neighbours, depending on charity/grants, finding other sources of food and collecting wild food. All the households grew their own fruits, vegetables and crops. However, livestock production was practiced by 10% of the participating households. The households used preservation methods such as keeping food in a dry place (26), sun drying (38), canning (6), freezing (53) and refrigeration (11) to keep and store vegetables. The Living Standard Measurement (LSM) is a tool which focuses on household access to services and facilities (Faber et al., 2017). Household characteristics range from level 1 up to level 10, and a score from 1 to 4 are considered to be poor and lack access to services, while scores above 5 have improved access to resources and services. The LSM results of the households indicates that they have improved access to services as all the households scored above five. All the households, had access to land with water, electricity and toilet facilities in the yard. The major constraints experienced by the households were insufficient water, theft, pests, plant diseases and livestock which destroyed the crops. It is recommended that the government provide programmes aimed at developing communities, promoting healthy eating and food production. Workshops on nutrition education should be continuous and focus on basic sanitation, food hygiene. Income generation small-scale businesses, crop production, and livestock rearing will assist in alleviating hunger and unemployment. These initiatives could be extended to other areas of the country as a way to improve food security. / Life and Consumer Sciences / M.C.S.
28

Variation in Dental Microwear Textures and Dietary Variation in African Old World Monkeys (Cercopithecidae)

January 2015 (has links)
abstract: Dietary diversity is an important component of species’s ecology that often relates to species’s abundance and geographic distribution. Additionally, dietary diversity is involved in many hypotheses regarding the geographic distribution and evolutionary fate of fossil primates. However, in taxa such as primates with relatively generalized morphology and diets, a method for approximating dietary diversity in fossil species is lacking. One method that has shown promise in approximating dietary diversity is dental microwear analyses. Dental microwear variance has been used to infer dietary variation in fossil species, but a strong link between variation in microwear and variation in diet is lacking. This dissertation presents data testing the hypotheses that species with greater variation in dental microwear textures have greater annual, seasonal, or monthly dietary diversity. Dental microwear texture scans were collected from Phase II facets of first and second molars from 309 museum specimens of eight species of extant African Old World monkeys (Cercopithecidae; n = 9 to 74) with differing dietary diversity. Dietary diversity was calculated based on food category consumption frequency at study sites of wild populations. Variation in the individual microwear variables complexity (Asfc) and scale of maximum complexity (Smc) distinguished groups that were consistent with differences in annual dietary diversity, but other variables did not distinguish such groups. The overall variance in microwear variables for each species in this sample was also significantly correlated with the species’s annual dietary diversity. However, the overall variance in microwear variables was more strongly correlated with annual frequencies of fruit and foliage consumption. Although some variation due to seasonal and geographic differences among individuals was present, this variation was small in comparison to the variation among species. Finally, no association was found between short-term monthly dietary variation and variation in microwear textures. These results suggest that greater variation in microwear textures is correlated with greater annual dietary diversity in Cercopithecidae, but that variation may be more closely related to the frequencies of fruit and foliage in the diet. / Dissertation/Thesis / Doctoral Dissertation Anthropology 2015
29

Limited dietary diversity and consumption of ultra-processed and deep-fried foods among adolescents in rural Bangladesh : uncovering the two faces of suboptimal diet

Islam, Mohammad Redwanul January 2021 (has links)
Background: With an estimated number of 1.2 billion in the world, adolescents represent a major transformative force in global health. Optimum adolescent nutrition is increasingly important for scaling up population health gains in low- and middle-income countries (LMICs) of South Asia. Nevertheless, little is known about the gender and socio-economic stratification of diets consumed by rural adolescents in these countries. The aim of this project was to understand the gender and socio-economic stratification of their diet with a dual, descriptive-analytic focus on dietary diversity (DD) and consumption of ultra-processed and deep-fried foods. Methods: This thesis builds upon cross-sectional analyses of data collected during 15-year follow-up of the MINIMat (Maternal and Infant Nutrition Interventions in Matlab) trial, from September 2017 to June 2019. Data on dietary and socio-demographic variables were collected through household survey; using a pre-tested, structured questionnaire. A single, 24-hour recall was employed to assess consumption of staples and non-staples arranged in 10 groups, ultra-processed foods (UPF) in four groups, and of one group of deep-fried foods. Data were analyzed using logistic regression models. The analytic sample comprised 2463 adolescents. Results: The prevalence of inadequate DD was 42.3% (40.3-44.2). Consumption of dark green leafy vegetables, vitamin A-rich fruits and vegetables, and animal-source foods–except fish–appeared low. The proportions of adolescents consuming meat, egg and dairy were higher among those from the richest households than those from the poorest households, and among boys than girls. Belonging to the poorest households (adjusted odds ratio (aOR): 1.59; 95% confidence interval (CI): 1.27-2.00) and the food insecure households (aOR: 1.34; 95% CI: 1.13-1.59), and attaining secondary education (aOR: 1.38; 95% CI: 1.11-1.71) were positively associated with inadequate DD. Adolescents having mothers with secondary education or above had lower odds of inadequate DD (aOR: 0.76; 95% CI: 0.60-0.96). Gender was not an independent predictor of inadequate DD.Approximately 83% (81.5-84.4) adolescents reportedly consumed at least one ultra-processed or deep-fried food in the 24 hours preceding the survey. Packaged confectioneries were the most consumed and sugar-sweetened beverages (SSB) the least consumed UPF group. Boys had greater odds of consumption than girls for all UPF groups and deep-fried foods. The association was strongest for SSB (aOR: 2.57; 95% CI: 1.97, 3.37), followed by deep-fried foods (aOR 1.96; 95% CI: 1.66, 2.32). Belonging to the richest households was associated with consumption of ready-to-eat foods (aOR 1.55; 95% CI: 1.12-2.16) and of SSB (aOR: 1.44; 95% CI: 1.02-2.03). Adolescents with higher educational attainment had lower odds of consuming SSB (aOR 0.73; 95% CI: 0.54-0.98). Conclusion: The studies presented compelling evidence of limited DD concurrent with emergent consumption of ultra-processed and deep-fried foods in a rural cohort of adolescents. Inadequate DD was more likely among those from the poorest and the food insecure households. For ultra-processed and deep-fried foods, gender association persisted across the food groups with boys having a greater likelihood of consumption than girls. Wealth status influenced consumption of “instant” foods and SSB only. This suboptimal dietary pattern may place the adolescents at heightened risk of different forms of malnutrition.
30

Mothers and fathers shape infant and young child feeding practices in rural Tanzania: A mixed-methods study of the family food environment

Cristiana Kay Verissimo (12476787) 28 April 2022 (has links)
<p>Infant and young child feeding practices are suboptimal in Tanzania, but optimal nutrition during the first two years of life is critical for development. At this age, behaviors of caregivers determine children’s diets, but few studies quantify how fathers or couples jointly influence child feeding. We investigate how men and women shape the family food environment to determine children’s diets in rural Mara, Tanzania. This mixed methods study used quantitative baseline data from the Engaging Fathers for Effective Child Nutrition and Development in Tanzania (EFFECTS) trial (ClinicalTrials.gov Identifier: NCT03759821), including 960 rural households with both parents and a young child. Logistic and linear mixed effects regressions examined associations between parental determinants and exclusive breastfeeding (n=189) and child dietary diversity over one day and one week (n=764 children 6-23 months; n=597 children 9-23 months). Parental determinants measured knowledge of breastfeeding and complementary feeding, self-efficacy on provision of diverse or nutritious diets, workload away from home, social support, household savings, and couples’ communication and decision-making, indicating women’s empowerment. Qualitative data drew from formative research (July-August 2018) conducted with parents of children aged 0-36 months, including eight focus group discussions (FGDs) with mothers and fathers (four FGDs each, 31 and 30 participants, respectively). FGDs were transcribed, translated, quality checked, and coded to identify key themes. The odds of exclusive breastfeeding decreased with mothers’ higher workload away from home and increased with mothers’ reports of more frequent couples’ communication over household decisions. Higher child dietary diversity was linked to mothers’ reports of higher knowledge of nutritious foods, higher social support, and higher couples’ communication frequency and quality. Generally, fathers’ determinants were not associated with children’s diets. Qualitative findings indicated that knowledge of exclusive breastfeeding was common, but challenges of perceived breastmilk insufficiency, women’s workload, and concerns about breastmilk quality led to early introduction of complementary foods. Affordability was a common challenge to appropriate complementary feeding, while couples’ decision-making dynamics and attitudes and beliefs about foods had the potential to be both enablers and barriers. Interventions must improve nutrition knowledge and social support, and they must empower women through joint decision-making and more gender-equitable workloads between parents to enable optimal child diets. </p>

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