Thesis (Ph. D.)--UCLA, 2008. / Vita. Description based on print version record. Includes bibliographical references (leaves 76-89).

Thesis (Ph. D.)--University of Wisconsin--Madison, 1968. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1958. / Typescript. Abstracted in Dissertation abstracts, v. 19 (1958) no. 6, p. 1230. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 151-152).

Thesis (Ph. D.)--University of Wisconsin--Madison, 1947. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 240-248).

Thesis (M.Inst.Agrar.)(Food Production)--University of Pretoria, 2006. / Includes summary. Includes bibliographical references. Available on the Internet via the World Wide Web.

Orientador : Jose Satiro de Oliveira / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos e Agricola / Made available in DSpace on 2018-07-17T16:26:26Z (GMT). No. of bitstreams: 1 Prata_LuizFrancisco_M.pdf: 25047113 bytes, checksum: 929fcb9f022bcc9e6a2e25a2e4738ae7 (MD5) Previous issue date: 1984 / Resumo: Partindo-se da importância do controle microbiológico do leite recebido na plataforma das indústrias de laticínios, a pesquisa de provas específicas que ofereçam resultados rápidos e compatíveis com a perecibilidade do produto, tem sido o objetivo do serviço de inspeção sanitária. Nesse aspecto, não encontramos, sendo utilizado em nosso meio, um teste que ofereça resultados que permitam o controle efetivo da matéria prima antes que esta entre na linha de processamento.No presente trabalho foi, então, estudado o método de contagem microscópica de microrganismos, com a intenção de comprovar a sua aplicabilidade como método rápido para o controle microbiológico do leite ao chegar à plataforma. Os resultados alcançados permitiram concluir que esse método se correlacionou muito bem com a contagem padrão em placas, tendo se comportado, também, de forma semelhante ao método de redução do azul de metileno. A aplicação do método microscópico na avaliação da qualidade microbiológica de 319 amostras de leite cru, incluindo leite tipo ¿B¿ apresentou resultados que permitiram recomendá-lo como teste rápido para o controle de qualidade a nível de plataforma das indústrias de laticínios. Mostrou-se útil, também, no fornecimento de informações adicionais importantes, como por exemplo na detecção de leite mastítico. Ressalta-se, ainda, que sua aplicação a leite pasteurizado permitiu uma indicação da qualidade microbiológica do leite antes de ser submetido ao tratamento térmico / Abstract: The microbiological quality is the starting point for the milk quality control in the receiving platform of the dairy industry, therefore the search for specific rapid tests has been the airn of resarchers envolved in milk quality inspection. In Brazil we have not found a microbiological test being used which could effectively evaluate the raw milk quality before it enters the processing line. In the present research work it was studied the direct microscopic count method to show its applications as a rapid test for contoling the milk quality in our brazilian industrues. The results indicated a very good correlation between the microscopic. Count and the standard plate count. As a quality control test the microscopic method was equivalent to the methylene blue reduction test. In assessing the microbiological quality of 319 samples of raw milk, including also type B milk, the microscopic count method proved to be a very good rapid test for controlling the raw milk quality in the dairy industry. This method also gave additional informations regarding the milk quality, like for instance the indication of mastitic milk. It could also be pointed that the microscopic count when applied to pasteurized milk gives a good idea of the microbiological quality of this milk right before it's pasteurization / Mestrado / Mestre em Tecnologia de Alimentos

In conditions where supplementation of poor quality diets is a major challenge, forage legumes such as Sericea lespedeza can be a good alternative supplement for protein at lower cost than most commercial concentrates. From studies done on Sericea lespedeza it is found plausible and valuable to supplement urea with Sericea lespedeza to strategically combat the deleterious effect of condensed tannins in the Sericea lespedeza and provide nitrogen in the rumen. This study was aimed to evaluate the effect of replacing sunflower oilcake with urea (a rumen degradable protein RDP source) or Sericea lespedeza (rumen undegradable protein RUP source) mixed with urea as nitrogen/protein sources on nutrient utilization, milk yield and milk composition of Saanen dairy goats. A digestibility and lactation study were conducted at the University of Pretoria Research Farm and chemical analysis performed at the University Nutrilab. A 30 days digestibility study was conducted on male Saanen goats after the lactation study, with 23 days adaptation and 7 days data collection period. Nine male goats were randomised and allocated to the three treatments in metabolism cages. In the lactation study 36 dairy goats were blocked according to milk collected on first month of lactation into high, medium and low milk yielders, then allocated to the three treatments of total mixed rations containing sunflower oilcake (T1) at 7% main protein source, T2 (urea at 1%) and T3- Sericea lespedeza at 12.5% mixed with urea according to a complete randomised block design (CRBD). Milk samples were collected from individual goats monthly at two consecutive milking’s. The samples were analysed for milk fat, protein, lactose, somatic cell count and milk urea nitrogen using a Milko-Scan analyser (at Irene Lacto lab). In the digestibility study, dry matter intake was significantly higher for goats fed on Sericea lespedeza with urea (T3) diet than goats fed on T1 and T2 diet. Goats on T3 diet had also significantly higher organic matter and crude protein intake than those goats fed on the other two TMR diets. The results also shows that the mean daily milk yields for the goats in the T1, T2 and T3 were 2.56, 2.46 and 2.52 kg per day respectively. T2 group had higher milk fat % (3.61) and higher milk urea nitrogen (MUN - 25.70 mg N/dl) than the other two treatments. T1 had significantly higher milk protein %. There was a great difference in milk composition of the afternoon milk as compared to the morning milk. The three TMRs had no significant difference in the nitrogen utilization and nitrogen excretion. It is then concluded that Sericea lespedeza mixed with urea can be used as subsititutes for sunflower oilcake in the diets of dairy goats since no negetive effect was found. However further investigations are needed. / Dissertation (MSc Agric)--University of Pretoria, 2017. / DAAD-NRF / International Foundation for Science (IFS) / Animal and Wildlife Sciences / MSc (Agric) / Unrestricted

No description available.

Thesis (MPH.) -- University of Limpopo, 2020 / Breast milk contains antibodies that help babies to fight off viruses and bacteria, thus, breastfeeding lowers the baby's risk of having asthma or allergies. Babies who are breastfed exclusively for the first 6 months, without any formula, have fewer ear infections, respiratory illnesses, and bouts of diarrhoea. Dwarsloop Community Health Centre (CHC) has low rates of exclusive breastfeeding (EFB), despite many efforts to increase this practice. The purpose of the study is to evaluate, understand, describe, explore and explain the factors contributing to poor exclusive breastfeeding among mothers at Dwarsloop Community Health Centre (CHC). Methods: The proposed study was conducted using a quantitative research method. Data was collected using self-administered, structured questionnaires, with close-ended questions. The sample in this study was drawn from mothers of infants 0-6 months attending the child health clinic at Dwarsloop CHC during the period of data collection. A sample of 92 mothers was selected for the study. Result: The highest proportion of the mothers had poor exclusive breastfeeding practice (73%). compared to good exclusive breastfeeding practice (27%). Factors associated with poor exclusive breastfeeding practice include experience of breast problems ( 77%), mothers who were embarrassed to breast feed in public (52%), mothers who were supported by their partners ( 39%), mothers who believe that their child was satisfied with breast milk only ( 49%) and mothers who were HIV-positive ( 54%). Conclusions: Although EBF is the correct method for infant feeding, mothers still find it difficult to maintain the practice for up to 6 months. Interventions emphasizing practical education should be targeted at addressing factors associated with poor EBF.

The objective of this study was to determine amount and composition of waste milk (WM) generated by 13 dairy farms and to measure effectiveness of on-farm pasteurizers. Waste milk was sampled bi-weekly from three farms located in North Carolina (NC) for 28 weeks and twice from ten farms in California (CA) in June 2005 and Jan. 2006. Amount of waste milk generated ranged from 2.48 – 9.84 L/calf/d. Standard plate count (SPC) of waste milk before pasteurization averaged 17 million cfu/ml on NC farms and 1.6 million cfu/ml on CA farms. Pasteurizers failed to deactivate alkaline phosphatase in 16%, and <5% of the time in NC and CA. California WM had lower post pasteurized SPC (13,000 cfu/ml) than NC farms (430,000 cfu/ml). A feeding trial was conducted to evaluate supplementing WM with 28% protein: 20% fat milk replacer (28:20) when WM is insufficient relative to calf demands. Treatment (TRT) 1 calves received M for 28d and then 28:20 until weaning at 56d. Treatment 2 calves received 28:20 for 28d and then milk until weaning. Treatment 3 calves received 28:20 for the entire period Four periods of time were evaluated; the total period, first four weeks (P1), transition period (TP), in which calves were switching diets, and until weaning (P2). Treatment 1 ADG was higher during TP as compared to TRT 2. Results demonstrated that similar growth rates through 8 weeks of age was achieved with either combination of M and 28:20 or only 28:20 fed on an isocaloric basis. / Master of Science