Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 19 of 19 for “"Β-hydroxybutyrate"”.
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An examination of biological phosphorus removal using bacterial counting and poly-β-hydroxybutyrate analysis in batch and continuous flow systems
… utilization was examined using PHB (Poly-β -Hydroxybutyrate - an internal substrate storage product) analysis by gas chromatography to supplement COD and acetate measurements. The results showed that Poly-P bacterial counts were significantly greater at a 5 day sludge age compared to a 10 day …
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Quroum sensing disruption and the use of short-chain fatty acids and polyhydroxyalkanoates to control luminescent vibriosis
… the homopolymer of the short-chain fatty acid β-hydroxybutyrate, the well-known bacterial storage compound poly-β-hydroxybutyrate, was shown to offer a more efficient protection. Finally, it was shown that poly-β-hydroxybutyrate containing bacteria can be used to protect brine shrimp from …
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Evaluation of Negative Energy and Mineral Balance in Periparturient Holstein-Friesian Cattle
… for measuring blood and plasma glucose, β-hydroxybutyrate, and potassium concentration. The first study, presented in chapter three, evaluated the accuracy of an electrochemical point-of-care meter for measuring blood and plasma glucose concentration in dairy cattle, and characterized the …
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Effects of non-native woody plant species on shrubland birds of conservation concern
… diet quality (triglyceride and β-hydroxybutyrate), and immune function (bacteria-killing ability) of all three species. Bell’s Vireos had higher corticosterone concentrations in relation to increasing prevalence of autumn olive. Yellow-breasted Chats and Field Sparrows had lower …
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Effect of aflatoxin B{u2081} on mitochondrial function
… aflatoxin B₁ occurs when either succinate or β-hydroxybutyrate is used as a substrate. When electrons were fed into the electron transport chain at cytochrome c₁ (or c) using TMPD and ascorbate no inhibition was observed. TMPD, however, released the inhibition brought about by 0.48 mM aflatoxin …
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Motility studies and taxonomy of a rod-shaped bacterium with unusual flagellar fascicles, Aquaspirillum fasciculus sp. nov.
… carbohydrates, presence of intracellular poly-β-hydroxybutyrate granules, positive reactions for catalase, oxidase and phosphatase, lack of tolerance to 3% NaCl, occurrence of a "polar membrane" in thin sections, and a DNA base composition of 62 to 65% G+C. The strains have been placed in the …
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The 16S rRNA characterization of a novel "microaerophilic" Pseudomonas sp. from the oligotrophic deep subsurface environment
… It was able to accumulate poly-β-hydroxybutyrate intracellularly, while it lacked the ability to produce cellular pigments, which is unique among the (Group I) pseudomonads. Growth occurred at oxygen concentrations of 20/0 and 21%, with similar growth rates and final cell densities.
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Effect of dry period diets varying in energy density on health and performance of periparturient dairy cows: a study of dry matter intake, lactation performance, fertility, blood parameters and liver condition
… biopsies and blood samples. Glucose, BHB (β- hydroxybutyrate), NEFA (Non-esteriffied fatty acids), GLDH (Glutamate dehydrogenase), AST (Aspartat aminotransferase), GGT (Gamma glutamyl transferase), ICDH (Isocitrate dehydrogenase) were analyzed from blood and liver fat was estimated under a …
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Inflamatory status and leukocyte function during the peripartum period and subsequent effects on reproduction and lactational performance in dairy cattle
… urea nitrogen, non-esterified fatty acids and β-hydroxybutyrate concentrations vi Texas Tech University, Cameron R. Nightingale, December 2016 were included in the metabolic measurements. Leukocyte responses measured were total leukocyte counts and differentials, neutrophil surface expression of …
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Replacement of Starch from Corn with Non-Forage Fiber from Distillers Grains in Diets of Lactating Dairy Cows
… of blood metabolites, glucose and β-hydroxybutyrate from coccegeal artery and mammary vein were similar across the diets. Results from this research suggest that non-forage fiber from DG can partially substitute for starch from com in dairy cow diets without affecting milk production …
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The degradation of gel-spun poly(beta-hydroxybutyrate) fibrous matrix
Poly(β-hydroxybutyrate), (PHB), is a biologically produced, biodegradable thennoplastic with commercial potential. In this work the qualitative and quantitative investigations of the structure and degradation of a previously unstudied, novel, fibrous form of PHB, were completed. This gel-spun PHB …
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Ketone Supplementation, Cardiometabolic Health, and Cognition in Humans
… esters (KE) has been shown to increase plasma β-hydroxybutyrate (BHB) and mimic the metabolic effects of LCHF ketogenic diets. Evidence suggests elevated concentrations of plasma BHB may lower blood pressure, improve vascular function, attenuate hyperglycemic responses, and enhance cognitive …
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Bacteria isolated from coriander and other umbelliferous herbs
… ice nucleate, ability to degrade pectate, poly-β-hydroxybutyrate accumulation, and ability to utilize more than 100 substrates as sole sources of carbon and energy. The results of these tests were analyzed in a numerical taxonomy study. Results of using two association coefficients (simple …
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Influence of dietary fat and protein on nutrient supply and utilization by the lactating bovine mammary gland
… carbon output in milk. Uptake of glucose, β-hydroxybutyrate, lactate, pyruvate, acetate, and O₂ were not affected by dietary treatment. Triacylglycerol concentration in arterial blood and uptake of long-chain fatty acids were elevated by fat supplementation, resulting in milk fat with a …
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Soybean Meal Substitution with a Microbial Protein Source in Dairy Cow Diets
… ~id not differ between treatments, meanwhile, β-hydroxybutyrate and blood glucose increased linearly as DEMP in the diet increased. Dietary treatments had no effect on pH and on most ruminal volatile fatty acids concentrations, with the exception of isovalerate which decreased linearly. Rumen …
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COMPARATIVE EVALUATION OF 1H NMR SPECTROSCOPY AS A NOVEL TOOL FOR ASSESSING STRESS WITH TRADITIONAL METHODS OF BLOOD CORTICOSTERONE LEVELS AND HETEROPHIL LYMPHOCYTE RATIO IN BROILER CHICKENS (GALLUS DOMESTICUS)
… like carnitine, lactate, glucose and β hydroxybutyrate suggested the undergoing process of energy mobilization. Metabolomic analysis of the serum samples of the photoperiod groups showed the presence of amino acids valine, threonine, lysine, proline, histidine, methionine and other …
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Relationships among nutritional regimen, metabolic disorders, reproduction, and production in dairy cows during the transition period
… glucose wk 3 (GLU3), glucose wk 4 (GLU4), β-hydroxybutyrate wk 1 (BHBA1), insulin wk 2 (INS2), nonesterified fatty acids wk −1 (NEFA-1), energy-corrected milk wk 4 (ECM4), fat corrected milk wk 4 (FCM4), and milk urea nitrogen wk 5 (MUN5). For linear regression analysis from PC, animals were …
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Dry period plane of energy and periparturient health condition: Effects on production and metabolic responses
… of non-esterified fatty acids (NEFA) and β-hydroxybutyrate (BHB) in blood, and lipid infiltration of liver. It is not known, however, whether these diets alter metabolism in healthy cows or act in some other manner to lessen the likelihood of developing metabolic disorders. The aim of the …
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The effects of supplementation of β-carotene during the close-up period on cows, colostrum, and calves
… (P < 0.01), blood urea nitrogen (P = 0.044), β-hydroxybutyrate (P = 0.097), and phosphorus (P = 0.088), but, with the exception of phosphorus, these results were confounded by significant or trending treatment by parity interactions. There was also a significant interaction of treatment by time …