Thesis (M. Tech. (Dept. of Hospitality and Tourism)--Vaal University of Technology. / A baseline survey on the nutritional status of primary school children was conducted by means of Quantitative Food Frequency Questionnaire (QFFQ) and the 24-Hr recall questionnaires. The questionnaires were distributed by trained fieldworkers and completed by children attending the primary school in this community. The results of the QFFQ and the 24-Hr recall were used to identify nutrient deficiencies in the target group and to design a food product for a school feeding programme targeted to address specific nutritional needs. The aim of this study was to develop a nutritious novel food product that was affordable and appealing to children, rich in energy, protein and micronutrients. Five recipes were originally tested and evaluated. Recipes were theoretically analyzed by using the Dietary Manager program. The three most suitable recipes were chosen. Sensory analysis, by means of a paired preference test was done to determine which of the three products the subjects preferred. The final product developed was a maize meal and whole wheal "vetkoek". The Agricultural Research Council (ARC) laboratory in Irene bio-chemically analysed the velkoek. A second sensory analysis was conducted to evaluate the product for acceptability. A smiley face evaluation sheet was developed for the acceptance testing. The results showed that the majority (65 percent) of the consumers liked the product very much, 18 percent liked the product moderately, and 17 percent found it acceptable, 90 percent found it to be acceptable for inclusion in a school-feeding program. After the sensory evaluation was done a trained microbiologist at the ARC conducted the shelf life testing. A recipe pamphlet was developed and printed in a format that is easily understood by illiterate people. The pamphlet was used by the community workers, who were responsible for preparing the vetkoek. The results indicated that a vetkoek, meeting all the stated criteria can successfully be developed for a school programme / National Research Foundation (NRF); Central Research Council (CRC)

M. Tech Food Service Management (Hospitality, Tourism and Public Relations, Faculty of Human Sciences), Vaal University of Technology. / Good maternal nutrition is vital for the health and survival of the developing foetus. Nutritive inadequacy has been associated with pregnant women in developing countries particularly Sub Saharan Africa. Adequate intake of both macro and micronutrients by this vulnerable group must be ensured to avoid maternal and infant morbidity and mortality. In this study, a novel approach was employed to develop a cost effective, culturally acceptable and nutrient-dense food multi-mix (FMM) supplement that would help meet 20-25 percent of the recommended daily allowance (RDA) of pregnant women aged between 20and 30 years in the Vaal region. Twenty FMM supplements were formulated using South African food composition tables to ensure adequate nutritional content. Two out of the twenty, were selected and named FMM C1 and C3 respectively. FMM C I and C3 was selected owing to their better nutrient contents and affordability when compared with the others. Food items used to formulate FMM C 1 included maize meal, pea powder, peanut dry, milk powder and kidney beans. FMM C3 was formulated with sorghum, maize meal, peanut dry and onion powder. Chosen food items were dried, roasted, ground and mixed together proportionately. FMM supplements (C 1 & C3) were analyzed using standard laboratory techniques to determine their nutrient content. Results obtained were from the Agricultural Research Council (ARC). The shelf life of the FMM supplements was microbiologically tested. Shelf life testing proved safety for the time of consumption, as very little microbiological growth was found in 28 days. The FMM supplements were then incorporated in the development of two acceptable recipes (soup and gravy).Simple recipe leaflets were developed for use by the subjects. The process proved that it is possible to formulate a FMM or any other food product according to certain formulation criteria since formulated FMM supplements (C1 and C3) met the criteria of at least 20% RDA of Protein (g). However, the criteria for micronutrients and energy were difficult to meet as folate iron and energy showed lower percentages of 10%, 14% and 18% respectively in the experimental situation. Sensory evaluation was conducted to ascertain the acceptability of the developed recipes (soup and gravy). The sample consisted of pregnant women randomly selected from John Haynes and Sharpeville clinics respectively, it can be concluded it is possible to formulate and develop products that were culturally acceptable to the consumers (pregnant women) as sensory analysis indicated the majority (85%) of the respondents liked the gravy and 65% liked the soup. Further research is needed to address the impact on nutritional status, long-term compliance and development of range of FMM with various ingredients to determine the most nutritional, cost effective and acceptable product for pregnant women.

D. Tech. (Food Service Management, Dept. of Hospitality, Tourism and PR management), Vaal University of Technology / The main objective of this study was to develop a cost-effective, culturally acceptable, nutrient-dense food multimix (FMM) based on local food staples for pregnant women in the Vaal region. The impact of the consumption of the multimix on the nutritional status of the women, dietary diversity and outcomes of pregnancy was assessed in an intervention study by measuring the same variables as for a pilot study where the nutritional status of pregnant women was determined. Compliance was measured through monitoring of the FMM consumption and sensory evaluation tests. Quantitative food frequency questionnaires (QFFQs) and 24-hour recall questionnaires were completed in interviews. Anthropometric and biochemical measurements were recorded. The pilot study indicated that the mean total iron intake was 9,74 mg/day, below the estimated average requirement (EAR) of 22 mg/day for pregnant women. Therefore, 41,7 per cent of the women were found to be iron deficient and 50 per cent suffered from iron deficiency anaemia. Food consumed supplied little iron. Eighty per cent of the women were overweight before falling pregnant. Based on the pilot study, the FMM was developed and subjected to the following processes: chemical analysis, shelf life tests, recipe development and sensory evaluation. The product was then implemented in an intervention programme. A control group of pregnant women received soup powder. The respondents were relatively healthy and did not suffer from any chronic diseases. According to the nutrient intakes measured by the QFFQ, indicating usual dietary intakes, the iron intake of 87,5 per cent of the experimental group and 94 per cent of the control group fell below the EAR before intervention. After the intervention it improved in that the iron intake of 35,2 per cent of the experimental group and 33,3 per cent of the control group fell below the EAR. The top 10 items consumed by the experimental group during pre- and post-intervention were mainly rich in carbohydrates. Food containing iron absorption inhibitors such as tannin in tea and phytates in maize meal and bread were among the top 10 foods listed. The highest number of individual food items consumed by an individual in seven days was 39 before the intervention and 52 after the intervention, among the experimental group. The individual food variety improved after the intervention. The reason for this could be the inclusion of the FMM in their diets. The majority of the respondents consumed eight to nine of the nutritious food groups before and after the intervention. The mean food variety score (FVS) for the control group was 38,9 (±10,5) before the intervention, which decreased to 35,8 (±8,39) after the intervention. No improvement in FVS was observed after the intervention in the control group and the FVS indicated medium dietary diversity (30-60 food items). The post-intervention results show that there was an improvement in most of the iron variables. The experimental group showed statistically significant differences between pre- and post-intervention measurements in transferrin and haematocrit levels and the control group in haematocrit levels. All the babies born to the mothers of both the experimental and control groups were healthy with measurements in the normal range. The reason for this could be that the inclusion of the FMM and soup powder in the diets of the experimental and control group, respectively, made the women more aware of the importance of pregnancy monitoring. Furthermore, the attention given to the women by the clinic sisters and the researchers could have contributed to all the improvements mentioned.

Graduation date: 1995

The nutritional status of forty-five women aged 71 to 89 years, who met defined health criteria, was assessed by an analysis of three-day diet records and anthropometric measurements. Subjects were grouped, according to the average caloric intake at home <75%> of daily intake to reflect the dependency of the subjects. Subjects were also divided into seven groups according to the site from which they were recruited.For the total population, there was no correlation between calorie intake per day and age, and there were negative correlations between age and all of the measures of body composition. In addition, a higher intake of calories per kg was negatively correlated with weight, suggesting that the heavier subjects had proportionately lower levels of caloric intake per kg of body weight.There were no significant differences in the risk for protein-calorie malnutrition (PCM) among the healthy elderly women who were subjects of this study as measured by an analysis of their dietary intake and anthropometric status, and based upon their dependency on others for <_75%> of their average daily caloric intake. It is concluded that for this population, source of food at home or away, as an indication of dependency, did not significantly affect nutritional status.When grouped according to the site from which they were reecruited, subjects in two of the groups were found to have the potential for malnutrition. Subjects in one of the groups had poor intakes of vitamins and minerals, but adequate body fat and somatic protein stores, and were not at risk for PCM. However, subjects in the other group appeared to have good diets and adequate fat mass, but very low muscle protein stores, and were at significant risk for PCM.The role of socioeconomic factors were minimal in this population as the two groups found to be at greatest risk were those observed to be near opposite ends of the socioeconomic spectrum. Therefore, it is concluded that upper income elderly are as much at risk for PCM as those in lower income groups, and that women in upper socioeconomic groups must be assessed for risk for PCM.It is apparent that the nutritional needs of most of the healthy elderly women in the study were being met. For those groups found to be potentially at risk, there was a possibility that they may not have been as healthy as was indicated, suggesting that risk for PCM is more a function of poor health which results in associated dependency. / Department of Home Economics

This study compared calorie needs, prescription and intake in enterally fed trauma and burn patients. Calorie needs of twenty-eight sequentially admitted patients were assessed by indirect calorimetry or by the Fick method. Caloric prescriptions were calculated from physicians orders. Following attainment of ordered goal rate, three day caloric intake was averaged. Caloric needs were not statistically different from caloric prescription. Caloric intake was significantly lower than caloric needs (p= 0.001). Intolerance and procedures were frequently cited reasons for withholding feedings. Results of this study suggest that trauma and burn patients may not receive the prescribed level of calories during the initial stage of enteral nutrition support. / Department of Family and Consumer Sciences

Thesis (Mnutr)--Stellenbosch University, 2003. / ENGLISH ABSTRACT: INTRODUCTION: Malnutrition is a silent emergency. WHO estimates that 55% of all child deaths in developing countries are associated with malnutrition. Inadequate dietary intake and disease are the two immediate causes of malnutrition. The underlying causes are household food insecurity, inadequate maternal and child-care and poor water/ sanitation and inadequate health services. Stunting is a major problem in pre-school children in South Africa. This indicates a long term inadequate dietary intake. Furthermore, the initiation of breastfeeding in South Africa is about 90%, and the duration thereof tends to be less than 3 months after birth. A great majority of children in this country consume a diet deficient in energy and of poor nutrient density to meet their micronutrient requirements. The aim of this study was to identify feeding practices of infants that could contribute to the development of malnutrition. METHOD: This was a cohort study with a prospective experimental design. Forty-four of the original 73 mother-infant pairs that were recruited, were interviewed monthly on feeding practices of the infants. Anthropometric measurements (weight and height of the infants) were measured monthly. RESULTS: Weight-for-age Z-scores dropped significantly with age from around 4 months, when weaning had started. Inadequate dietary intake, more specifically weaning practices and breastfeeding practices, were identified as the immediate cause that could contribute to the development of malnutrition in this community. Except for the positive relationship between the level of education of the father and an increase in HAZ over time, growth was not affected by socio-economic and demographic factors in this community. This is probably because of the fact that there were very small differences in socio-economic and demographic factors. CONCLUSION: Weaning and breastfeeding practices should be addressed in all nutrition education programmes. / AFRIKAANSE OPSOMMING: INLEIDING: Wanvoeding is 'n stil gevaar. Die WGO skat dat daar 'n verband is tussen wanvoeding en ongeveer 55% van alle kindersterftes in ontwikkelende lande. 'n Onvoldoende dieetinname en siekte is die twee onmiddellike oorsake van wanvoeding. Onvoldoende huishoudelike voedselsekuriteit, onvoldoende moeder- en kindsorg en swak sanitasie en watervoorsiening asook onvoldoende gesondheidsorg is die onderliggende oorsake. Dwerggroei is 'n groot probleem in Suid-Afrika onder voorskoolse kinders. Dit dui op 'n langdurige onvoldoende dieetinname. Bydraend hiertoe, is die aanvang van borsvoeding in Suid-Afrika ongeveer 90%, maar die duurte van borsvoeding is minder as 3 maande na geboorte. Die meerderheid van alle kinders in Suid-Afrika se dieet het 'n tekort aan energie en die nutriëntdigtheid van hulle diëte voldoen nie aan hulle daaglikse behoeftes ten opsigte van mikronutriënte nie. Die doel van hierdie studie was om voedingspraktyke te identifiseer wat kan bydra tot die ontwikkeling van wanvoeding. METODE: Dit was 'n kohortstudie met 'n prospektiewe eksperimentele ontwerp. Vier-en-veertig van die oorspronklike aanvanklike moeder-babapare wat gewerf is, is maandeliks ondervra met betrekking tot die voedingspraktyke van die baba en antropometriese metimgs (gewig en lengte van die baba) is maandeliks geneem. RESULTATE: Z waardes van gewig vir ouderdom het beduidend gedaal namate die kinders ouer geword het, veral vanaf 4 maande, toe spening begin het. 'n Onvoldoende dieetinname, meer spesifiek spenings- en borsvoedingspraktyke, is geïdentifiseer as die onmiddellike oorsake wat tot die ontwikkeleing van wanvoeding kan bydra in hierdie gemeenskap. Daar was 'n positiewe verband tussen lengtegroei (Z waardes van lengte vir ouderdom) en die vlak van opvoeding van die vader. Groei is nie deur die ander sosio-ekonomiese en demografiese faktore beïnvloed nie, moontlik as gevolg van die klein verskille in sosio-ekonomiese en demografiese eienskappe van die studie populasie. GEVOLGTREKKING: Spenings- en borsvoedingpraktyke behoort aandag te geniet in alle voedingsvoorligtings-programme.

Thesis (Mnutr)--Stellenbosch University, 2004. / ENGLISH ABSTRACT: Objective: To assess the impact of a continuous auditing process on nutritional support in a tertiary paediatric intensive care unit. Design: Prospective, longitudinal audit initiated in 1994. Re-auditing took place almost every 2 years: 1994-1995, 1997-1998 and 2001, leading to completion of the audit cycle. Setting: An 8 bed Paediatric Intensive Care Unit (PICU) in StMary's Hospital London. Subjects: All ventilated patients admitted for more than a complete 24-hour period were included in the audit. The units' standard daily fluid charts were used for data collection. Data was collected until discharge from PICU or a maximum of 10 days. Incomplete and imprecise data was disregarded during the data analysis process. Outcome measures and interventions: The outcome measures include time taken to initiate nutritional support, the route of feeding and delivery of calories by day 3, judged by the Estimated Average Requirements (EAR) for energy. Feeding algorithms and protocols introduced after each audit: nasogastric feeding algorithm following the 1994-1995 audit, blind nasojejunal tube insertion technique and related feeding algorithms after the audit in 1997-1998. Results: Time taken to initiate enteral feeding was reduced from 15 hours (1994- 1995) to 5.5 hours (2001). The proportion of parenterally fed patients fell from 11% (1994-1995) to 1% (200 1 ). The proportion of enterally fed patients via the nasojejunal route rose from 1% (1994-1995) to 20% (2001). An increase was noticed in patients reaching 50% and 70% of energy requirement by day 3 following admission was documented: 7% in1994-1995 to 35% in 2001 for 70% of EAR (p = 0.0008) and 18% in 1994-1995 to 58% in 2001 for 50% of EAR. (p< 0.0001) Conclusion: This audit process demonstrates the effectiveness of continuous auditing in an intensive care unit in improving the quality of nutritional support. This is possible only with a multi-disciplinary team approach. / AFRIKAANSE OPSOMMING: Doel: Om die impak van 'n deurlopende ouditerings proses op die voedingsondersteuning in 'n tersi~re pediatriese intensiewesorg-eenheid te evalueer. · Studie Ontwerp: 'n Prospektiewe, longetudinale oudit is in 1994 geYnisieer. Herouditee·ring het ongeveer elke 2 jaar plaasgevind: 1994-1995, 1997-1998 en 2001. Dit het tot die voltooiing van 'n ouditering siklus gelei. Plek: 'n Agt-bed Pediatriese lntensiewesorgeenheid (PISE) in StMary's Hospitaal London, Engeland. Pasiente: Alle geventilleerde pasiente wat opgeneem was vir !anger as 'n volledige 24 uur-periode is by die oudit ingesluit. Die eenheid se standard daaglikse vogkaarte dokumentasie is gebruik vir data-insameling. Data-insameling het plaasgevind tot en met ontslag vanuit die PISE vir 'n maksimum van 10 dae. Onvolledige en onakkurate data is uitgesluit tydens die data analise proses. Uitkomste en Intervensie: Die uitkomste is gemeet deur die impak van die ouditerings proses te evalueer ten opsigte van tydsduur voordat daar voedings geYnisieer is, die voedingsroete en die hoeveelheid energie gelewer teen dag 3, vergelyk met die geskatte gemiddelde energie behoefte. Voedings-algoritmes en protokolle is geYmplementeer na elke oudit: nasogastriese voedings-algoritmes is na die 1994-1995 oudit geYmplimenteer, 'n blinde nasojejunale buisinplasingstegniek en I relevante voedings algoritmes het na die 1997-1998 oudit gevolg. Resultate: Die tydsduur om voedingondersteuning te inisieer het van 15 ure (1994- 1995) tot 5.5 ure (2001) verminder. Die persentasie pasiente wat parenterale voeding ontvang het, het gedaal van 11% (1994-1995) tot 1% (2001), met 'n toename in enterale voeding via die nasojejunale roete van 1 %(1994) tot 20% (2001). 'n Toename in pasiente wat meer as 50% en 70% van hul energie behoefte bereik het teen dag 3 is opgemerk: 7% in 1994-1995 en 35% in 2001 het meer as 70% van die geskatte gemiddelde behoefte vir energie ontvang. (p=0.0008) Agtien persent het in 1994-1995 en 58% in 2001 meer as 50% van hul gemiddelde energie behoeftes bereik (p < 0.0001). Gevolgtrekking: Hierdie ouditerings proses demonstreer die effektiewiteit van deurlopende ouditering in 'n intensiewesorg-eenheid deur die verbetering van die kwalitiet van voedingondersteuning. Dit is slegs moontlik met 'n multidissiplinere span benadering.

Pigs can consume a wide range of feeds to meet their nutritional needs and there is a renewed interest in the use of cheaper nutrient resources for animal feeding. Forages have been proved to be a substantial source of nutrients for pigs, however, the bulk of the existing work has focused on sows and grower-finisher pigs above 50 kg. This study was conducted during May-June 2009 at the Agricultural Research Council (Irene, Pretoria) to determine the voluntary forage intake and nutrient digestibility in growing pigs fed a mixed diet (concentrate + Kikuyu grass). Twenty five 8 weeks old Large White x Landrace crossbred pigs (27 ± 3.8 kg) were blocked by weight into 5 groups of 5 pigs each. One of 5 treatments (A, B, C, D and E), corresponding to 100, 90, 80, 70 and 80 % of a basal concentrate ration, respectively, was randomly assigned to a pig within each block. Indoor treatments were either fed the concentrate only (A) or also received freshly cut Kikuyu grass (Pennissetum clandestinum) ad libitum (B, C and D). Only treatment E animals were housed outdoors in Kikuyu grass paddocks while all other treatments were housed indoors. Forage intake was recorded daily and also estimated using a pair of n-alkanes as markers. Nutrient and diet digestibility were calculated using acid-insoluble ash (AIA) and dotriacontane (C32) as markers. The results showed that the concentrate intake (CI) in treatments A, B and C was significantly different from treatments C and E (P < 0.05) and there was positive correlation between the concentrate level and its intake (P < 0.01). The recorded intake of Kikuyu grass (RKI) and the animal’s average daily gain (ADG) were similar between treatments (P > 0.05). The estimated (EKI) and recorded (RKI) Kikuyu grass intakes were not influenced by CI or the level of concentrate allowance (CL) and RKI was higher (P < 0.05) than EKI. Digestibility estimates with AIA were higher than C32 Keywords: Dotriacontane; Kikuyu; growth performance; forage; monogastrics estimates (P < 0.05). It was concluded that Kikuyu grass intake was not affected by the reduction of the concentrate level allowance. It was proposed that forage intake in a mixed diet (forage + concentrate) was more dependant on its own characteristics than the concentrate’s nutritional value. / Agriculture, Animal Health and Human Ecology / M. Sc. (Agriculture)

The lack of locally manufactured marine finfish diets motivated the current project, which aimed to develop a practical diet specifically formulated for dusky kob. The first growth trial investigated the effect of pellet texture (i.e. hard versus soft pellets) and the inclusion of an additional binder, test treatments were compared to two reference diets. There was no significant difference in weight gain between fish fed the hard or soft pellets (p=0.17), over nine weeks. The fish fed the local trout feed weighed significantly less than those fed the test diets (p=0.003). There was no significant difference in leaching rate amongst treatments (p=0.45). A hard pelleted diet without gelatin is recommended in the commercial culture of dusky kob. Pellets with different physical shapes were tested to determine the effect of shape on settling speeds. A square shaped pellet had a slower sinking rate compared to a round shaped pellet (p<0.0001). Juvenile dusky kob, held in cages, fed the square pellets grew significantly faster than the fish fed the round pellet, with a mean weight gain of 16.81 ± 0.45 g (p=0.018). A growth trial was used to optimize the protein to energy (PE) ratio by adjusting dietary protein and lipid levels. Fish fed the diets with high levels of protein (46 % protein) achieved the better growth rates (125 % weight gain) compared to the lower protein diets (92 % weight gain) (p<0.0001). There was no significant difference in total ammonia production (TAN) level for the 46 and 42 % protein diets (p=0.68). The overall performance of the prototype diet was investigated in a closed recirculating system. Growth and FCR of the fish fed the prototype diet was on a par to those fed the commercially available diet currently used in the local farming industry. There was no significant difference in the blood chemistry for fish held at increased stocking densities. The prototype diet is suitable for use in recirculating systems, as there were no negative effects on water quality parameters. This study has laid a foundation for the manufacture of a practical commercial dusky kob diet in South Africa.