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Nutrition

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Importance Of The Zebrafish Model For Understanding Nutrition, Michael Britt Williams Jan 2021

Importance Of The Zebrafish Model For Understanding Nutrition, Michael Britt Williams

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The common zebrafish Danio rerio is a useful model for human health. Effective utilization of this model required development of husbandry and reproductive protocols as well as genomic sequencing and creation of relevant molecular techniques. However, the dietary needs of the species remain woefully under investigated. At this time no chemically-defined open source diets are available to the zebrafish research community. Consequently, those labs utilizing the zebrafish model rely on commercial diets that may not provide adequate nutrition and lack consistency needed for rigorous and reproducible research. The first focus of these studies was to examine the current state of …


Single Cell Proteins Affect Growth Performance And Body Composition Of Pacific White Shrimp Litopenaeus Vannamei, Yuan Yuan Jan 2020

Single Cell Proteins Affect Growth Performance And Body Composition Of Pacific White Shrimp Litopenaeus Vannamei, Yuan Yuan

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The globally growing human population has increased the needs for protein based food. Single cell proteins (SCPs) as unconventional protein source, when coupled to aq-uaculture production, offer a means to ensure future protein needs can be met. To demon-strate a given type of SCP has potential as a protein source for use in aquaculture feed; a number of investigations are needed including demonstrating that the SCP is attractable and accepted by the animals, leads to equivalent survival, growth and nutritional compo-sition. This dissertation represents a series of investigations designed to evaluate the fea-sibility of using a bacterial based (MRD-Pro) and …


A Modified Standard American Diet (Msad) Induces Physiological Parameters Associated The With Metabolic Syndrome In C57bl/6j Mice, Sophie Bru Chehade Jan 2020

A Modified Standard American Diet (Msad) Induces Physiological Parameters Associated The With Metabolic Syndrome In C57bl/6j Mice, Sophie Bru Chehade

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Obesity manifests physiologically in multiple organ systems of the body, typically increasing the risk of developing cardiometabolic disorders. Researchers have questioned the causative role that western dietary patterns have on disease pathogenesis and have speculated that quality and quantity of dietary fats and/or carbohydrates have a predictive role in the development of these disorders. Standard reference diets such as the AIN-93 rodent diet have historically been used to promote optimal animal model health and reduce variation of results across experiments. These diets have been invaluable to murine research; however, their translational value in studying human nutrition-related pathologies is limited. Early …


Utilization Of The Zebrafish Model System To Predict Effects Of Dietary Lipid Composition On Human Health, Lauren Adele Fowler Jan 2019

Utilization Of The Zebrafish Model System To Predict Effects Of Dietary Lipid Composition On Human Health, Lauren Adele Fowler

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Obesity is a disease that encompasses the interaction of both genetics and life-style factors, and the pathology behind its development remains unclear. Specifically, defining the influence of dietary lipid intake on adiposity and metabolic health continues to be a fundamental challenge, and the use of animal models will be required to gain a full understanding of the processes contributing to diet-induced obesity in humans. The zebrafish Danio rerio has emerged as a powerful model system to study diet-induced obesity and metabolic disease in humans, while simultaneously offering multiple advantages over rodent models. This dissertation addresses multiple aspects regarding the use …


Evaluation Of The Factors Influencing Feed Intake And Satiety Of The Variegated Sea Urchin, Lytechinus Variegatus, Marlee Hayes Jan 2018

Evaluation Of The Factors Influencing Feed Intake And Satiety Of The Variegated Sea Urchin, Lytechinus Variegatus, Marlee Hayes

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Feed intake is the primary determinant of nutrient and energy acquisition for most metazoans. Satiety regulates feed intake and may have cascading effects on nutrient acquisition and health. Satiety of many higher organisms involves complex processes and a variety of signaling molecules that are responsive to many factors associated with nutrient intake. However, the ability to sate is observed in many simpler animals with less complex physiological processes. Sea urchins, with relatively simple digestive and nervous systems, provide an ideal model for the study of fundamental drivers of feed intake. Understanding the process of satiety in this primitive deuterostome can …


Effects Of A Cooking Program On Social Skills, Adaptive Functioning, And Dietary Behavior Of Adolescents With Autism Spectrum Disorder, Eva Phui Phui Trinh Jan 2017

Effects Of A Cooking Program On Social Skills, Adaptive Functioning, And Dietary Behavior Of Adolescents With Autism Spectrum Disorder, Eva Phui Phui Trinh

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Autism Spectrum Disorder (ASD) is characterized by two domains: 1) deficits in social interaction and communication, and, 2) restricted and repetitive behavior, interests, or activities. Poor adaptive functioning skills is an associated feature of ASD and leads to concerns for establishing independence as adolescents with ASD transition into adults. The dietary behavior of adolescents in the United States do not meet national standards for healthy eating, which could lead to poor health outcomes. Eating and feeding problems are more prevalent in children with ASD compared to their typically developing peers. Independent skills and health are a main source of stress …


Egesta Of The Sea Urchin Lytechinus Variegatus Promote Weight Gain In The Shrimp Litopenaeus Vannamei, Karen Elizabeth Jensen Jan 2016

Egesta Of The Sea Urchin Lytechinus Variegatus Promote Weight Gain In The Shrimp Litopenaeus Vannamei, Karen Elizabeth Jensen

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Long-term economic and environmental sustainability of aquaculture will be dependent on utilization of novel nutrient sources and remediation of effluent streams. Integrated Multi-Trophic Aquaculture (IMTA) is a method intended to maximize productivity and minimize waste by strategically reusing effluent from a primary, fed species in the production of one or more secondary, extractive species. Such relationships are based on the trophic role of the fed and extractive species in question. Sea urchin egesta are thought to play a role in nutrient cycling in natural habitats by providing an energy source for many coprophagous deposit feeders, suspension feeders, and microbes. The …


Nutrient Intake, Nutrient Targets And Feed Application To Promote Optimal Production And Feed Efficiency In The Sea Urchin Lytechinus Variegatus (Echinodermata: Echinoidea), Laura Elizabeth Heflin Jan 2015

Nutrient Intake, Nutrient Targets And Feed Application To Promote Optimal Production And Feed Efficiency In The Sea Urchin Lytechinus Variegatus (Echinodermata: Echinoidea), Laura Elizabeth Heflin

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Important considerations for the development of sea urchin aquaculture will include understanding nutrition and feed management. These reported investigations contribute to knowledge of dietary protein and carbohydrate requirements in Lytechinus variegatus and feed management strategies. The first evaluation of economic feasibility of sea urchin aquaculture as related to feed costs is presented and the geometric framework (GF) to assess nutrient intake targets is first applied to cultured aquatic organisms to yield recommendations for nutrient balancing in formulated urchin feed. Data- derived models for dietary protein and carbohydrate intake predict increased rates of growth and production among urchins fed diets containing …


Effects Of Biological, Environmental, And Nutritional Factors On Fecal Pellet Size And Morphology In The Sea Urchin Lytechinus Variegatus, Lacey Nicole Dennis Jan 2014

Effects Of Biological, Environmental, And Nutritional Factors On Fecal Pellet Size And Morphology In The Sea Urchin Lytechinus Variegatus, Lacey Nicole Dennis

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Sea urchins are an important economic resource for many international fisheries and are an important animal model in developmental biology. Currently, health of cultured sea urchins is evaluated by behavior or through invasive examination of internal tissues. Destructive sampling is not conducive to longitudinal studies and a non-invasive method of evaluating sea urchin health would have practical application. Evaluation of the egesta could provide a valuable predictor of physiological well-being. The size and morphology of fecal pellets produced by the sea urchin Lytechinus variegatus under a variety of environmental and nutritional conditions were characterized in terms of 2-dimensional area, length, …


The Effects Of Supplemental Dietary Vitamins On Weight Gain And Organ Production In The Variegated Sea Urchin, Lytechinus Variegatus (Echinodermata: Echinoidea), Warren T. Jones Jan 2011

The Effects Of Supplemental Dietary Vitamins On Weight Gain And Organ Production In The Variegated Sea Urchin, Lytechinus Variegatus (Echinodermata: Echinoidea), Warren T. Jones

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Due to the global decline in sea urchin fisheries, there has been an increased need to produce nutritionally-complete sea urchin diets for the emerging sea urchin aquaculture industry. Previous studies have established various macronutrient requirements; however, micronutrient requirements have not been well-researched in sea urchins. Vitamins are important micronutrients in both vertebrates and invertebrates, but their importance has not been established in any sea urchin species. To establish the essentiality and nutritional requirements of vitamins in sea urchins, a suite of important vitamins were tested in nutritional trials in the sea urchin, Lytechinus variegatus. Sea urchins fed moderate levels of …