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 63 for “"enteritis"”.
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DEVELOPING STRATEGIES TO CONTROL NECROTIC ENTERITIS IN BROILER CHICKENS
Necrotic enteritis (NE) caused by Clostridium perfringens (CP) remains a continuous challenge worldwide in the broiler chicken industry. Therefore, the objective of this thesis was to develop effective control strategies against NE. After the literature review of NE in Chapter 1, the development of …
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Metatranscriptomics Analysis of Ileum Microbial Communities in Necrotic Enteritis Chickens
<p>Necrotic enteritis (NE) is a recognized multifactorial disease that causes an annual loss of $6 billion to the poultry industry. Thus, it has become essential to carry a comprehensive study of the composition of chicken gut which hosts this disease. The objective of this research is to measure …
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The inter-relationship of gastro-enteritis and malnutrition in Cape Town
Diarrhoea is an important cause of illness throughout the world and remains a leading cause of death among infants and young children. The number of deaths from this condition is estimated at 5 million a year. There are important clinical differences in the disease as it manifests itself in …
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The inter-relationship of gastro-enteritis and malnutrition in Cape Town
Diarrhoea is an important cause of illness throughout the world and remains a leading cause of death among infants and young children. The number of deaths from this condition is estimated at 5 million a year. There are important clinical differences in the disease as it manifests itself in …
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The inter-relationship of gastro-enteritis and malnutrition in Cape Town
Diarrhoea is an important cause of illness throughout the world and remains a leading cause of death among infants and young children. The number of deaths from this condition is estimated at 5 million a year. There are important clinical differences in the disease as it manifests itself in …
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Managing Poultry Gut Integrity, Immunity and Microbial Balance During Necrotic Enteritis
Necrotic enteritis (NE) is a major enteric disease in commercial poultry and manifests itself in clinical and subclinical forms. Despite years of research, NE is still among the leading diseases with the greatest economic impact on poultry production. Subclinical forms lead to poor performance …
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Studies on Virulence Factors of Clostridium perfringens and Necrotic Enteritis in Chickens
<p>Necrotic enteritis (NE) is an economically important disease of the poultry industry. It is caused by <em>Clostridium perfringens</em> (CP) and the pathogenesis of the disease is still unknown today. The role of alpha toxin (AT) in the pathogenesis of the disease has recently come into question. …
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Effects of Calcium and Enzyme Supplementation on the Occurrence of Necrotic Enteritis
… and bone mineralization during necrotic enteritis (NE). In each experiment, Cobb 500 broilers were obtained from a commercial hatchery and housed in floor pens at the Virginia Tech Turkey Research Center. Birds were placed on used litter from a previous flock that had presented clinical …
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Investigating the Potential of Microbial Metabolites and mTOR Signaling on Chicken Necrotic Enteritis
<p>Necrotic enteritis (NE), caused by C. perfringens and coccidiosis, is responsible for substantial economic loss annually. In the first chapter, we investigated the effect of secondary bile acid on necrotic enteritis. Day-old broiler chicks were randomly assigned to 5 groups of diets supplemented …
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Influence of Incubation Conditions on Turkey Poult Intestinal Development and Susceptibility to Poult Enteritis
… may increase poult susceptibility to poult enteritis complex (PEC). Temperature and hypoxic stress during embryonic incubation may impact organ growth and development, development of immunocompetency, post-hatch performance and may predispose poults to enteric disease. The objective of the …
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Enterococci and its enterocins as an alternative to antibiotics in poultry affected by necrotic enteritis
… perfringens infections associated with necrotic enteritis (NE) are one of the major threats of the poultry sector, that requires a close surveillance. Antibiotic resistance in C. perfringens is emerging, but as this microorganism is not subject to surveillance programmes, more information is …
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The effects of Bacillus subtilis, dietary calcium and coccidial vaccines in broilers experiencing naturally occurring necrotic enteritis
Necrotic enteritis (NE) is a disease that negatively affects broiler performance and has increasingly become a problem with the reduced use of antibiotics. There is increased interest to utilize alternative methods including coccidial vaccines and direct fed microbials (DFM) to reduce or prevent …
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Studies on the immunopathologic mechanisms of intestinal lesion formation in turkey poults infected with hemorrhagic enteritis virus
… mechanisms through which hemorrhagic enteritis virus (HEV) induces intestinal lesion formation associated with clinical infection is unknown. These studies were designed to 1) determine differences in age susceptibility to HEV infection and parameters which best indicate severity of …
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Real Time PCR-Based Infectivity Assay and Characterization of Cell Surface Receptors for Turkey Hemorrhagic Enteritis Virus
Turkey hemorrhagic enteritis virus (THEV) is responsible for the hemorrhagic enteritis (HE) disease in commercial turkeys through infections by its virulent strains. HE is an acute condition characterized by depression, immunosuppression, bloody droppings, intestinal hemorrhage, and death. THEV …
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The Effect of Social Stress and Vitamin C on Immunity and Response to Hemorrhagic Enteritis Virus in Turkeys
Hemorrhagic Enteritis (HE) vaccine is perhaps the most commonly used vaccine in the turkey industry. Although it provides protection against clinical disease, the vaccine is still thought to produce transient immunosuppression. In the field, HE still remains a significant concern for turkey …
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Evaluating the efficacy of brewers’ yeast-derived functional feed additives in mitigating soybean meal-induced enteritis in Atlantic salmon
… plant protein inclusion is soybean meal-induced enteritis (SBMIE), a diet-related inflammatory condition that impairs mucosal function. Meanwhile, the use of functional feed additives such as those derived from brewers’ yeast (Saccharomyces cerevisiae) have emerged as a promising strategy to …
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The Influence of Necrotic Enteritis, Environmental Factors, and Genetics on Intestinal Development Pathways and Disease Occurrence in Broiler Chickens
… average, houses that had histories of necrotic enteritis harbored a greater abundance of C. perfringens spores. Colonies that were isolated on the specialized medium were confirmed using PCR as C. perfringens. Lastly, Chapter 4 examined how genetic selection for multiple traits has influenced …
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In ovo and feed application of probiotics or synbiotics and response of broiler chicks to post-hatch necrotic enteritis
… diseases in broiler production is necrotic enteritis (NE), caused by the ubiquitous opportunistic bacteria Clostridium perfringens (CP). With the worldwide reduction in antibiotic growth-promoters (AGPs), there is increased interest in natural alternatives to reduce disease and improve …
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The use of transgenic tobacco as a production and delivery system for a vaccine against hemorrhagic enteritis virus of turkeys
Hemorrhagic enteritis virus (HEV) causes an acute viral disease in turkeys characterized by bloody diarrhea and death. Current live HEV virus vaccines are immunosuppressive and predispose turkeys to secondary bacterial infections. Data indicates that the capsid proteins (fiber, penton base, hexon) …
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Evaluation of the Effect of a Lippia organoides Essential Oil Extract on Clostridium perfringens Proliferation In Vitro and Necrotic Enteritis in Broiler Chickens
… parameters, intestinal integrity, and necrotic enteritis (NE) in broiler chickens. To do this, a previously established challenge model for NE was utilized which included challenging with Salmonella Typhimurium on day 0, Eimeria maxima on day 18, and Clostridium perfringens on days 22 and 23. …
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