Antibodies are the functional unit of humoral immunity. They are secreted by plasma cells, a type of B lymphocyte. When on the surface of a B cell, these molecules are immunoglobulins, following secretion they are termed as antibodies. Antibodies are found in bodily fluids and tissue spaces and are most effective in eliminating extracellular pathogens. As compared to mammalian antibodies, IgY offers various advantages for the targeted extraction of antibodies and their application in bioanalysis. Since the antibodies are extracted from the yolks of laid eggs, the method of antibody production is non-invasive. Thus, no blood must be taken from the animals for the extraction of blood serum. Because of its economic importance most research on immunity implied in the reactivity of the body were performed on domestic birds. Direct consequence of this research is the understanding of fundamental and applied concepts of immunity in birds. Comparing to the mammalian, avian immune system appears insignificant. However, it currently provides important information regarding the fundamental immunological mechanisms. It also provided a significant number of firsts, especially in vaccinology.
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Chicken Egg Yolk Antibodies Production and Application ab 99.99 € als Taschenbuch: IgY-Technology. Auflage 2001. Aus dem Bereich: Bücher, Wissenschaft, Biologie,
The protocol developed for IgY purificationindicated approximately 74% recovery rate and 80%purity, while that of ovotransferrin appeared to bearound 93% recovery rate and 80% purity. Theseprotocols seem to be economical and practical for alarge-scale purification of IgY and ovotransferrinfrom chicken egg because ethanol and resin used inthe protocols can be regenerated as well as they aresimple and rapid methods. The combination of 100 mM-NaHCO3 to ovotransferrin was found to bebacteriostatic against E. coli O157:H7 and L.monocytogenes in BHI broth. Also ovotransferrinsolution added with 0.5% citric acid or Zn-boundovotransferrin inhibited the growth E. coli O157:H7and L. monocytogenes in BHI broth respectively.Also, EDTA and lysozyme promoted antibacterialactivity of ovotransferrin solution combined with100 mM-NaHCO3 against E. coli O157:H7 andL.monocytogenes respectively. Based on theseresults, this study claims that ovotransferrincombined citric acid, NaHCO3, and EDTA or lysozymeseemed to be useful antibacterial agents forcontrolling E. coli O157:H7 and L. monocytogenes.
The research was aimed to study the potential of probiotic lactic acid bacteria as suitable alternatives to antibiotics in broilers. This was design to find a possible replacement to antibiotics in broiler production. The study was carried out at the Department of microbiology, faculty of sciences Kaduna State University, Kaduna between January to May 2018. A total of ten raw milk samples were screened for the isolation of Lactic Acid Bacteria and 20 day-old broiler chicks (initial body weight 41 ± 0.5 g) were administered probiotics containing Lactobacillus fermentum, Lactobacillus plantenrun and Weissalla ciberia in water at 108 cells/milliliters/isolates/birds/day at day 6, 7, 8, 21, 22, and 23 of ages. Body Weight (BW), Weight Gain (WG) and Feed Intake (FI) were measured weekly just as feed conversion ratio was calculated and mortality recorded throughout the duration of the experiment. Blood glucose concentration, total protein, lipid profiles and Total immunoglobulins (IgY) were determined from blood sample at the ages of 14 and 42 days. Carcass quality and proximate analysis were evaluated from the meat of the broiler at the age of 42 days.
Europe has a distinguished history of environmental research and hosts many of the world s leading researchers in the environmental field. Environmental concerns have been on the policy agenda since the European Comunities were created in 1957. The International Geophysical Year (IGY) was launched in the same year as a first attempt to coordinate global measurements of the Earth, the oceans, the atmosphere and the sun. It also pointed out for the first time that carbon dioxide was building up in the atmosphere. The decades since then have witnessed increasing public concern about our environment and the damage being done to it, alongside greater research efforts to increase knowledge and find solutions.
IgY An Alternative antibody. This text book gives a clear illustration and description of the principles and concepts of immunology in a highly accessible and comprehensive manner. This book is designed to cater the basic needs of the scientists in the field of Biomedical science, Biotechnology, Immunology, Biochemistry and Microbiology. This book also elaborates and highlights the various techniques employed for in vivo and in vitro analysis of biomolecules. Each chapter starts with introductory details of the techniques followed by laboratory methods. The book is compartmented into five following chapters, 1. Introduction 2. Venom composition and enzyme activities 3. Symptoms, signs and treatment of cobra bite 4. Extraction of egg yolk IgY 5.In vivo and In vitro assays.
Erscheinungsdatum: 09.12.2019, Medium: Taschenbuch, Einband: Kartoniert / Broschiert, Titel: Novel Food Ingredients: Egg-Yolk-IgY Powder for Diarrhea Treatments, Autor: Shigwedha, Nditange // Jia, Li, Verlag: SPS, Sprache: Englisch, Rubrik: Umwelt // Landwirtschaft, Gartenbau, Seiten: 104, Informationen: Paperback, Gewicht: 171 gr, Verkäufer: averdo
To help salve the sting of orbiting Sputniks, the United States needed a dramatic demonstration of technological prowess; early in 1958, the White House ordered a top secret under-ice transit of the Arctic Ocean--Pacific to Atlantic--via the North Pole. And that spring, the Office of Naval Research initiated a unique project: to assess whether non-rigid airships (blimps) could support field parties deployed in the Arctic. This book recounts two successful missions. In August, the nuclear submarine Nautilus (SSN 571) reached 90 North and, continuing under ice, logged the first deep-ocean transit of the basin. En route to rendezvous with an IGY drifting station on T-3, an ice island, U.S. Navy airship BUNO 126719 became the sole military airship to cross the Arctic Circle. This work is based on first-hand accounts, including journal excerpts from Dr. Waldo Lyon a force behind U.S. under-ice submarine development
C. T. Russell Originally published in the journal Space Science Reviews, Volume 136, Nos 1&#8211;4. DOI: 10. 1007/s11214-008-9344-1 © Springer Science+Business Media B. V. 2008 The Sun-Earth Connection is now an accepted fact. It has a signi cant impact on our daily lives, and its underpinnings are being pursued vigorously with missions such as the Solar TErrestrial RElations Observatory, commonly known as STEREO. This was not always so. It was not until the middle of the nineteenth century that Edward Sabine connected the 11-year geomagnetic cycle with Heinrich Schwabe&#8217;s deduction of a like periodicity in the sunspot record. The clincher for many was Richard Carrington&#8217;s sighting of a great whi- light are on the Sun, on September 1, 1859, followed by a great geomagnetic storm 18 hours later. But was the Sun-Earth Connection signi cant to terrestrial denizens? Perhaps in 1859 it was not, but a century later it became so. Beginning in the 1930&#8217;s, as electrical powergrids grew in size, powercompanies began to realize that they occasionally had power blackouts during periods of intense geomagnetic activity. This correlation did not appear to be suf ciently signi cant to bring to the attention of the public but during the International Geophysical Year (IGY), when geomagnetic activity was being scrutinized intensely, the occurrence of a large North American power blackout during a great magnetic storm was impossible to ignore.
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