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 20 of 23 for “"Negative energy balance"”.
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RELATIONSHIPS BETWEEEN CARBOHYDRATE NUTRITION AND METABOLISM, INFLAMMATION, AND PERFORMANCE OF DAIRY CATTLE DURING THE PERIPARTURIENT PERIOD
… with the onset of milk production resulting in negative energy balance. Cows must mobilize body tissues to increase energy for the body while sparing glucose for the mammary gland. Due to this increased metabolic demand and negative energy balance, cows often end up in a state of metabolic …
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Disease-related malnutrition: Energy balance, body composition and functional capacity in patients on oral nutritional support after major upper gastrointestinal surgery.
… curative treatment although the procedure may negatively impact nutritional status. The aim of this thesis was to investigate energy balance, body composition and functional capacity during the first year but also long time after major upper gastrointestinal (MUGI) surgery in two groups of …
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Effects of feed restriction on milk production and metabolism in mid-lactation dairy cows
… metabolic responses to a short-term period of negative energy balance induced by feed restriction (FR) and the effect of abomasal supplementation of different amino acids (AA) or glucose. Seven multiparous Holstein cows (93 ± 15 DIM) were randomly assigned to 7 treatments in a 7 × 4 incomplete …
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Day-to-Day Variation in the Feed Consumption of Dairy Cows in Early Lactation
… diet, and those cows tended to be in more negative energy balance than cows fed the flavored diet. Parameters of both the exponential and cosinor models were associated with various pre- and post-parturn production variables. Plasma progesterone concentrations were positively correlated …
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Control of bovine Pyruvate Carboxylase Expression by Saturated and Unsaturated Fatty Acids and Impact on Fatty Acid Metabolism
… of increased cellular lipid load, including the negative energy balance experienced by periparturient dairy cows. The bovine PC gene contains three promoter sequences, with products of the proximal promoter (PCP1) being specific to glucogenic and lipogenic tissues. Previous work links control of …
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Energy Balance, Immune System Function, and Susceptibility to Mastitis in Dairy Cows
… dissertation evaluate the relationship between energy status and immune system function at the whole animal, protein, and genomic levels, as well as via the utilization of a large-scale epidemiological dataset. Our large-scale study indicated the potential use of circulating non-esterified fatty …
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Microrna involvement in hepatic adaption during the periparturient period in Holstein dairy cows
… after calving) dairy cows commonly experience a negative energy balance due to the increased nutrient requirements for fetal growth and milk production coupled with decreased dry matter intake (DMI). This combination can increase the risk of developing certain immunologic problems and metabolic …
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Zur elektrochemischen Oxidation des Ammoniak
Considering the limited availability of fossile energy resources the fuel cell (FC) concept is of increasing importance. In this work the suitability of ammonium for usage in a PEMFC has been studied. A commercialy available PEMFC (H-Tec) has been utilized in conjunction with hydrogen on one hand …
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Mechanism of action of a tumour derived lipid mobilising factor
… protein expression further potentiates the negative energy balance and wasting observed in cachexia.
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Targeting Akt/Mtor Signaling Pathways During Murine Skin Tumor Promotion and The Impact of Dietary Energy Balance Manipulation
… many types of cancer. In contrast, reduction in energy consumption via calorie restriction (CR) has been shown to be a potent inhibitor of carcinogenesis across a broad range of species and tumor types. Previous data has demonstrated differential signaling through Akt and mTOR via the IGF-1R and …
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The Association Between Non-Esterified Fatty Acids And Beta-Hydroxybutyrate During The Transition Period In Holstein Dairy Cows And Negative Downstream Outcomes - Disease Incidence, Milk Production And Reproduction
… and lactation. At the animal level, excessive negative energy balance (NEB) can increase the risk of developing displaced abomasa, clinical ketosis, metritis, and/or retained placenta and can negatively affect reproduction and milk production. Non-esterified fatty acids (NEFA) and …
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L-Carnitine Supplementation for Periparturient Dairy Cows
… affects gene expression patterns during negative energy balance.
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Immune function, gene expression, blood indices and performance in transition dairy cows affected by diet and inflammation
… state are not entirely clear (Goff, 2006). The negative energy balance associated with parturition leads to extensive mobilization of fatty acids stored in adipose tissue, thus, causing marked elevations in blood non-esterified fatty acids (NEFA) and B-hydroxybutyrate (BHBA) concentrations …
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Oligodendrocytes of the adult median eminence
… ME given its diverse roles in the regulation of energy balance, glucose homeostasis, and neuroendocrine function. Data presented in this thesis demonstrate that in contrast to the corpus callosum (a well- characterised white matter tract), new myelin forming OLs are generated at a high rate and …
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Harvesting natural algal blooms for concurrent biofuel production and hypoxia mitigation
This study assesses the net energy balance and economic benefits of harvesting detrimental environmental algal blooms and conversion of the harvested biomass into biofuels. An engineering model was developed to compare the energy efficiency of different harvesting methods and biofuel conversion …
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Inflamatory status and leukocyte function during the peripartum period and subsequent effects on reproduction and lactational performance in dairy cattle
… which drives most cows into some degree of negative energy balance. Consequently, this is the time of the gestation/lactation cycle that results in the highest incidence of metabolic disorders such as ketosis, hypocalcemia, displaced abomasum, and retained placenta, as well as, infectious …
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The hormonal control of lipid metabolism in sheep
… extent of fatty acid mobilization or the overall energy balance of the tissue. About 60 - 100% of fatty acid released by lipolysis could be recycled within the tissue, a phenomenon which is under hormonal control and is possibly linked with maintenance of non-shivering thermogenesis. Insulin …
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Relationships between body mass index, appetite regulation and physical activity during shift-work and night-work
… the notion that exercise can mediate a negative energy balance which might attenuate body mass gain in shift-workers. The study presented in Chapter 6 determined the within-subject correlations between factors that regulate appetite in the post-exercise period. This study explored how …
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Relationships among nutritional regimen, metabolic disorders, reproduction, and production in dairy cows during the transition period
Negative energy balance (NEB) during the first weeks postpartum is associated with infertility in dairy cows. A meta-analysis approach was used to investigate the association between prepartum energy feeding regimen, productive parameters, health, and reproductive performance. Days to conception …
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The cost of locomotion in North Atlantic right whales (<italic>Eubalaena glacialis</italic>)
… in any environment requires the use of energy to overcome the physical</p><p>forces inherent in the environment. Most large marine vertebrates have evolved</p><p>streamlined fusiform body shapes to minimize the resistive force of drag when in</p><p>a neutral position, but nearly all …
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