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Development And Evaluation Of Fiber And Pectin Based Delivery Systems For Delivering Lactobacillus Plantarum , Arranee Chotiko
Development And Evaluation Of Fiber And Pectin Based Delivery Systems For Delivering Lactobacillus Plantarum , Arranee Chotiko
LSU Doctoral Dissertations
Probiotics may improve gut microbial composition and immune function. Introduction of probiotics via foods or supplements may result in the probiotics not surviving during processing and passage through the stomach to the large intestine. The overall objective of this study was to develop and investigate three delivery systems for delivering live probiotic cells (Lactobacillus plantarum NRRL B-4496) (LP). The three delivery systems were: (1) immobilized LP (~108-109 CFU/mL LP Free Cells) on purple rice bran fiber (PRF) (Delivery system 1), (2) encapsulated LP with combined pectin-rice bran extract (Delivery system 2), and (3) double encapsulated LP …
Cryopreservation Of Domestic Cat Epididymal Spermatozoa, Jesse Ray Saenz
Cryopreservation Of Domestic Cat Epididymal Spermatozoa, Jesse Ray Saenz
LSU Doctoral Dissertations
The primary lines of defense in preventing any exotic species from becoming endangered or extinct should be the protection of their habitat and from poaching. For wildlife conservationists, these primary measures are often not feasible, and thus cannot be the only means to prevent extinction. The objective of this research was to identify a semen extender that contained little to no egg yolk and could still effectively freeze domestic cat epididymal spermatozoa, for the purpose to sort spermatozoa into X and Y, using flow cytometry. In the first experiment we compared a TesT (Tes + Tris) 20% egg yolk extender …
Principal Motives Of Positive Youth-Adult Relationships: A Model For Identifying The Motives Of Adult Volunteers And Youth-Adult Relationships In Physical Activity-Based Youth Development Programs, Stephanie Marie Goudeau
Principal Motives Of Positive Youth-Adult Relationships: A Model For Identifying The Motives Of Adult Volunteers And Youth-Adult Relationships In Physical Activity-Based Youth Development Programs, Stephanie Marie Goudeau
LSU Doctoral Dissertations
The field of positive youth development has evolved in response to the growing effort to provide youth with safe and healthful activities during leisure time. Physical activity-based youth development programs (PA-based YDPs) utilize a range of individual and team sports and physical activities as tools to simultaneously teach character development and physical skills for the acquisition of life skills. The intentional focus on positive youth development provides a suitable context for the development of a youth-adult relationship (YAR). The bonding between a youth and adult is critical to the development of adaptive responses and life skills which ultimately impact the …
Pathogenic Enteric Viruses In Louisiana Oysters And Environmental Waters, Naim Montazeri Djouybari
Pathogenic Enteric Viruses In Louisiana Oysters And Environmental Waters, Naim Montazeri Djouybari
LSU Doctoral Dissertations
Norovirus (NoV) and pathogenic enteroviruses are the major causes of gastroenteritis in humans worldwide, and are usually transmitted through direct or indirect exposure to raw or partially treated sewage. Filter-feeding shellfish concentrate virus particles from the water and transmit them to humans. The occurrence of norovirus GI and GII and fecal indicators in Louisiana eastern oysters (Crassostrea virginica) and harvest water were investigated on a biweekly basis for almost one year. Only one oyster sample was positive for NoV GII at 3.5 log10 genomic copies/g digestive tissues. A stool specimen obtained from an infected individual associated with a norovirus outbreak …
Agricultural Policy, Off-Farm Income, And Farmland Values: The Case Of South Korea, Hyunjeong Joo
Agricultural Policy, Off-Farm Income, And Farmland Values: The Case Of South Korea, Hyunjeong Joo
LSU Doctoral Dissertations
Farmland plays a dual role for farm business households; it can be both a production cost and an asset. As a production cost, farmland affects farm production decisions. As an asset, farmland comprises 80% of the total farm households’ assets. The total land available for farming is decreasing due to non-farming demand for land. The primary goal of this dissertation is to examine the impact of farm household income on farmland values. Specifically, I will assess the impact of off-farm income and government subsidies on farmland values in South Korean farm households. The majority of the studies on off-farm income, …
The Influence Of The Lower Trapezius Muscle On Shoulder Impingement And Scapula Dyskinesis, Christian Louque Coulon
The Influence Of The Lower Trapezius Muscle On Shoulder Impingement And Scapula Dyskinesis, Christian Louque Coulon
LSU Doctoral Dissertations
This dissertation contains three experiments all conducted in an outpatient physical therapy setting. Shoulder impingement is a common problem seen in overhead athletes and other individuals and associated changes in muscle activity, biomechanics, and movement patterns have been observed in this condition. Differentially diagnosing impingement and specifically addressing the underlying causes is a vital component of any rehabilitation program and can facilitate the individuals return to normal function and daily living. Current rehabilitation attempts to facilitate healing while promoting proper movement patterns through therapeutic exercise and understanding each shoulder muscles contribution is vitally important to treatment of individuals with shoulder …
Health Effects Of Dietary Fermentable Fiber (Resistant Starch), Diana Gabriela Carvajal-Aldaz
Health Effects Of Dietary Fermentable Fiber (Resistant Starch), Diana Gabriela Carvajal-Aldaz
LSU Doctoral Dissertations
Resistant starch (RS) reaches the large intestine for fermentation and is considered a prebiotic. We wanted to determine if we could reduce fermentation for future mechanistic studies and how there is improved insulin sensitivity in human studies with or without increased incretin hormone glucagon-like peptide 1 (GLP-1). Two main studies were performed. In the first main study, low potency antibiotics (Ampicillin 1g/L and Neomycin 0.5g/L) were added to the drinking water of rats to reduce fermentation of RS. Antibiotics were used either prior (first) to or during (second) feeding of RS. Results demonstrated that low potency antibiotics given prior to …
Motor Learning Effects Of Two Types Of Stressors: Implications For Practice Specificity, Christopher Adam Aiken
Motor Learning Effects Of Two Types Of Stressors: Implications For Practice Specificity, Christopher Adam Aiken
LSU Doctoral Dissertations
Various types of stress have been found to have both positive and negative effects on motor performance (Szalma & Hancock, 2011; Van Gemmert & Van Galen, 1997). One potential explanation for these diverse findings is that stress increases the amount of neuromotor noise in the system (Van Gemmert, 1997). Low levels of stress may have an activating effect on the system which may improve motor performance whereas larger levels of stress decrease motor performance. Research has also suggested that increases in stress increase effort (Hockey, 1997) which may in turn facilitate motor learning (Lee, Swinnen, & Serrien, 1994). The primary …
A Market-Based Approach For Valuing Ecosystem Services On Coastal Properties, Michelle A. Savolainen
A Market-Based Approach For Valuing Ecosystem Services On Coastal Properties, Michelle A. Savolainen
LSU Doctoral Dissertations
As part of ongoing efforts to assess ecosystem services provided by wetlands, this research focuses on estimating the private monetary value of wetland services to residential property owners in Louisiana and Alabama using a hedonic price model. Understanding that tradeoffs must be made with limited resources, valuing ecosystem services is important for policy and decision making purposes, such as determining how much public and private financial resources should be put towards wetland maintenance and restoration. Data on property transactions, wetland coverage, and built infrastructure were collected for the analysis. Based on theory and results from a Box-Cox model, the log-linear …
Evaluating Commodity Farm Program Selection And Economic Return Variability On Representative Farms In The Mississippi River Delta Region Using A Risk Return Framework, Michael Anthony Deliberto
Evaluating Commodity Farm Program Selection And Economic Return Variability On Representative Farms In The Mississippi River Delta Region Using A Risk Return Framework, Michael Anthony Deliberto
LSU Doctoral Dissertations
The Agricultural Act of 2014, signed February 7, 2014, introduces a new era of federal support in the production of major agricultural commodities in the United States for the 2014 through 2018 crop years. The ultimate result of the Act was a 954-page piece of legislation that represented market-oriented policies such as the creation of an area-wide shallow loss revenue support program for covered commodities and a greater reliance on crop insurance products offered as a suite of risk management tools available to producers. The impact that this law has on agricultural producers in the Mississippi River delta region of …
Sensory Perception Of Saltiness And Bitterness In Oil-In-Water Emulsions, Damir Dennis Torrico
Sensory Perception Of Saltiness And Bitterness In Oil-In-Water Emulsions, Damir Dennis Torrico
LSU Doctoral Dissertations
The objective of this research was to evaluate saltiness and bitterness perception in oil-in-water emulsion systems. For that purpose, three experiments were performed: A sensory threshold study, a descriptive sensory and physical property evaluation, and a psychophysical assessment of taste perception in emulsion systems. Experiment-I: Sensory detection and recognition thresholds of NaCl, caffeine, and KCl in aqueous-solutions vs. oil-in-water emulsions were evaluated. For saltiness recognition thresholds, KCl thresholds were higher compared to those of NaCl. For NaCl and KCl, emulsions did not significantly affect the saltiness recognition threshold compared to that of solutions. The bitterness recognition thresholds of caffeine and …
Estimating Desirable Cattle Traits Using Latent Class And Mixed Logit Models: A Choice Modeling Application To The U.S. Grass-Fed Beef Industry, Isaac Sitienei
Estimating Desirable Cattle Traits Using Latent Class And Mixed Logit Models: A Choice Modeling Application To The U.S. Grass-Fed Beef Industry, Isaac Sitienei
LSU Doctoral Dissertations
This study examines the preferences for cattle traits using mixed logit and latent class models. Choice experiment data from a 2013 mail survey of 1,052 U.S. grass-fed beef producers were used. The findings indicate that grass-fed beef producers generally preferred lower-priced, heavy animals that were small-to-medium framed and easy to handle for grass-finishing. Black animals that were retained from their own calves were preferred. Relative to intact males, steers and heifers were preferred. Except for the estimated parameter for the weight attribute, the standard deviations for the temperament, body frame, source, color, gender, and price attribute levels were significant at …
Three Essays On Land Ownership, Gender, And Agricultural Productivity In The Case Of Developing Countries, Krishna H. Koirala
Three Essays On Land Ownership, Gender, And Agricultural Productivity In The Case Of Developing Countries, Krishna H. Koirala
LSU Doctoral Dissertations
This dissertation set out to evaluate the impact of land ownership and role of gender to the Filipino farmers and to investigate gender difference in agricultural productivity and technical efficiency of Malawian rural households. The first essay investigates the impact of land ownership on the productivity and technical efficiency of rice farmers in the Philippines. We use a 2007-2012 Loop Survey from the International Rice Research Institute (IRRI) and analyzed it by using a stochastic frontier function method. Results show that land ownership has a significant impact on technical efficiency. In particular, counter to the theory, the Comprehensive Agrarian Reform …
Three Essays On Food Demand, Land Use Intensity, And Food Crop Portfolio Choice Under Weather Risk, Aditya Raj Khanal
Three Essays On Food Demand, Land Use Intensity, And Food Crop Portfolio Choice Under Weather Risk, Aditya Raj Khanal
LSU Doctoral Dissertations
Food security and adaptation to climate change has been an important research and development agenda in most of the development organizations and in the national policy of developing countries. The most vulnerable population from climate change and food security problems are rural and agricultural households in the developing and low income countries. Weather and climatic factors and food security has a direct link with poverty because a large majority of poor live in rural areas and depend on agriculture for their livelihoods. The primary focus of this dissertation is to analyze consumption and production aspects of the rural agricultural households. …
Study Of Factors Affecting Growth And Development Of Narrow Brown Leaf Spot Of Rice Caused By Cercospora Janseana (Racib.) O. Const., Kirandeep Kaur Mani
Study Of Factors Affecting Growth And Development Of Narrow Brown Leaf Spot Of Rice Caused By Cercospora Janseana (Racib.) O. Const., Kirandeep Kaur Mani
LSU Doctoral Dissertations
Studies evaluated the effects of planting date, cultivar susceptibility, fungicide application timing, nitrogen management, and tillage practices on the severity of narrow brown leaf spot of rice (NBLS) caused by Cercospora janseana. All factors evaluated affected NBLS severity. The mid-April planted rice had less NBLS as compared to mid-May, late planted rice. Propiconazole fungicide (Tilt) application at panicle initiation or early boot stage was found equally effective in terms of disease reduction in mid-April planting while panicle initiation stage was the best time to apply fungicide in the late planting (mid-May). Early onset and higher severity of NBLS was observed …
The Effects Of Post-Exercise Consumption Of A Kefir Beverage On Performance And Recovery During Intensive Endurance Training, Keely Virginia O'Brien
The Effects Of Post-Exercise Consumption Of A Kefir Beverage On Performance And Recovery During Intensive Endurance Training, Keely Virginia O'Brien
LSU Doctoral Dissertations
This study was designed to determine whether kefir accentuates the positive health benefits assessed by measures in fitness and/or body composition, as a measure of cardiovascular disease risk as well as the biomarker c-reactive protein. Sixty-seven adult males and females aged 18-35 years were assigned to one of four groups: 1) endurance training + control beverage, 2) endurance training + kefir beverage, 3) active control + control beverage or 4) active control + kefir beverage. The exercise groups completed 15 weeks of structured endurance training while the active control groups maintained their usual exercise routine. Baseline physiological and exercise measurements …
Essays On The Effect Of Trade Facilitation On Bilateral Agricultural Trade, Trina Biswas
Essays On The Effect Of Trade Facilitation On Bilateral Agricultural Trade, Trina Biswas
LSU Doctoral Dissertations
This dissertation offers three independent studies that each contributes to the literature on trade facilitation. The papers are built on the gravity model framework where the relationship between trade facilitation variables and the volume of agricultural exports across the border are examined. To deal with the issue of endogeneity, instrumental variable regression is used. The study also corrects for sample-selection bias present in the trade data. The first paper examines the role of e-governance on bilateral agricultural trade. The study finds that better quality of e-governance promotes agricultural exports. Specifically, according to the findings of the paper, the quality of …
The Use Of Assisted Reproductive Technologies To Improve Pregnancy Rates In White-Tailed Deer, Jaclyn C. Lambe-Steinmiller
The Use Of Assisted Reproductive Technologies To Improve Pregnancy Rates In White-Tailed Deer, Jaclyn C. Lambe-Steinmiller
LSU Doctoral Dissertations
Detection of estrus in white-tailed (WT) deer is laborious and often missed, as there are few visual cues presented during the 24 h period in which females are receptive to mating. Reproductive management of WT operations is improved by the use of fixed-timed artificial insemination (FTAI) protocols. Fixed-timed AI removes the need for estrus detection and ensures the breeding of an entire herd, as well as the ability to schedule fawning within predetermined timeframes. Two studies evaluated two FTAI regimens and their ability to synchronize estrous in WT. The first study implemented the administration of eCG 200 IU (im) at …
Fermentable Non-Digestible Dietary Fiber And Bioactive Compounds Affect Aging And Fat Deposition In Caenorhabditis Elegans, Chenfei Gao
LSU Doctoral Dissertations
Overweight and obesity have been imposing $147 billion a year to the health care system in the United States. Limited medications are available in the market with side effects. Surgical treatments are second-line obesity treatments. Short chain fatty acids (SCFAs) produced from the fermentable resistant starch improves the secretion of satiety hormones peptide YY (PYY) and glucagon-like peptide 1 (GLP-1) from L-endocrine cells of cecum and colon. We hypothesized that consumption of fermentable non-digestible dietary fiber and bioactive compounds will increase insulin sensitivity, reduce body fat, and improve healthspan in Caenorhabditis elegans (C. elegans), and hyperglycemia (2% glucose) that may …
Impact And Management Of The Mexican Rice Borer (Lepidoptera: Crambidae) In Bioenergy Crop Agroecosystems, Matthew Travis Vanweelden
Impact And Management Of The Mexican Rice Borer (Lepidoptera: Crambidae) In Bioenergy Crop Agroecosystems, Matthew Travis Vanweelden
LSU Doctoral Dissertations
The Mexican rice borer, Eoreuma loftini (Dyar) (Lepidoptera: Crambidae) is an invasive stem borer pest of sugarcane, rice, corn, and sorghum, and poses a threat to the production of dedicated bioenergy feedstocks in the U. S. Gulf Coast region. Studies were conducted to assess insect-plant interactions between E. loftini and bioenergy and conventional cultivars of sugarcane and sorghum, including yield response, oviposition preference, and host suitability. In addition, the efficacy of select cultural and biological control tactics to manage E. loftini in these crops was assessed. Bioenergy sugarcane (energycane) and sweet sorghum exhibited reduced E. loftini injury; however, these crops …
Three Essays On Economic Analysis Of Production Systems Of U.S. Grass-Fed Beef Industry, Basu Deb Bhandari
Three Essays On Economic Analysis Of Production Systems Of U.S. Grass-Fed Beef Industry, Basu Deb Bhandari
LSU Doctoral Dissertations
This dissertation research consists of three essays. The first two studies analyze experimental research data based on three pasture systems for grass-fed beef (GFB) production in the Gulf Coast Region. System 1 included bermudagrass and ryegrass; System 2 included bermudagrass, ryegrass, rye, dallisgrass, and clover mixtures (red, white, and berseem clovers); and System 3 included bermudagrass, soybean, sorghum sudan hybrid, ryegrass, rye, dallisgrass, and clover mixtures (red, white, and berseem clovers). Fifty-four Fall-born steers were weaned in May and grouped into nine groups and randomly blocked into treatments and replicates. Inputs and output data were recorded on a daily basis. …
The Bioactive Compounds In Agricultural Products And Their Roles In Health Promoting Functions, Yixiao Shen
The Bioactive Compounds In Agricultural Products And Their Roles In Health Promoting Functions, Yixiao Shen
LSU Doctoral Dissertations
Bioactive compounds from different agricultural food products have attracted great interest from food industries and researchers for their health promoting functions such as antioxidant, antiaging, anti-inflammatory and anticancer performance. In this study, hydrophilic and lipophilic fraction of two economical agricultural products sweet sorghum millet and sweet potato, as well as two herbs, butterfly pea and basil were extracted. The profiles and contents of phenolics, fatty acids, tocopherols, carotenoids and phytosterols in these selected agricultural products were determined by chromatography and mass spectrum methods. Additionally, the anti-lipid-oxidation capability of sweet sorghum millet and basil, and anti-cancer potential of butterfly pea seed …
Evolutionary Relationships Among Fungal Soybean Pathogens And Molecular Marker Development In The Genus Cercospora, Sebastian Albu
Evolutionary Relationships Among Fungal Soybean Pathogens And Molecular Marker Development In The Genus Cercospora, Sebastian Albu
LSU Doctoral Dissertations
Cercospora leaf blight (CLB) and purple seed stain (PSS) are common soybean diseases in the Gulf South of the United States (USA). For nearly a century, Cercospora kikuchii has been considered as the only pathogen causing these diseases. However, previous reports of genetic diversity among isolates collected throughout Louisiana suggested the presence of multiple lineages or species. Recent systematic studies classified species of Cercospora using a taxonomic system based on phylogenetic analysis of five nuclear loci (legacy genes). Using a similar approach, cercosporoid fungi tentatively identified as C. kikuchii were evaluated along with 53 other species of Cercospora. No …
Dietary Strategies To Influence Appetite: Effects Of Oat Beta-Glucan And Thylakoids From Spinach On Satiety And Reward-Induced Eating Behavior, Candida Joan Rebello
Dietary Strategies To Influence Appetite: Effects Of Oat Beta-Glucan And Thylakoids From Spinach On Satiety And Reward-Induced Eating Behavior, Candida Joan Rebello
LSU Doctoral Dissertations
The objective of these studies was to examine the effects of oat-based cereals and a spinach extract, on eating behavior. The cereals compared included instant oatmeal (IO), old fashioned oatmeal (SO), and a ready to eat cereal (RTEC), each containing the soluble fiber beta-glucan. The spinach extract containing thylakoids, the internal photosynthetic membrane of plants, was compared with a placebo. The first study, a randomized crossover trial compared the effect of IO and SO on subjective ratings of satiety, with the RTEC. Subjects consumed isocaloric 150kcal servings of the cereals in random order. Visual analogue scale ratings evaluating satiety were …
Recovery From Exercise: The Influences Of Supplementation And Rest Interval, Ryan Miskowiec
Recovery From Exercise: The Influences Of Supplementation And Rest Interval, Ryan Miskowiec
LSU Doctoral Dissertations
Recovery from exercise is immensely important and under studied. The experiments conducted throughout this research have focused on testing the effects of rest interval during resistance exercise and the efficacy of acetic acid feeding on recovery rate. To elucidate the relationship between rest interval and recovery energy expenditure two experiments were undertaken. These experiments were designed to alter only rest interval while maintaining work intensity and volume. No difference in the total energy expenditure during the short phase of recovery (first hour) was found, but energy expenditure during the prolonged phase (days post exercise) was minorly increased by lowering rest …
Integrated Multiple-Tactic Management Of The Redbanded Stink Bug On Soybeans In Louisiana, Miyanda Nzala Moonga
Integrated Multiple-Tactic Management Of The Redbanded Stink Bug On Soybeans In Louisiana, Miyanda Nzala Moonga
LSU Doctoral Dissertations
Stink bugs (Hemiptera: Pentatomidae) are major pests of soybeans in Louisiana and heavy infestations often lead to economic losses. The stink bug species complex has changed in the past decade with the prevalence of the invasive redbanded stink bug, Piezodorus guildinii (Westwood), which causes greater damage than other stink bug species. Moreover, control of the redbanded stink bug has been faced with challenges because it is less sensitive to recommended insecticides. Therefore, studies were conducted to evaluate different control options for P. guildinii. Among the studies conducted was the current status of egg parasitoids of stink bugs in Louisiana. Telenomus …