The aim of this study was the production of specific IgY against cell-associated, highly conserved mammalian proteins. CD 14 is expressed on monocyte surfaces and was identified as endotoxin receptor. P 23 is a cellular protein with unclear biological function. The induction, preparation and characterization of egg yolk antibodies against these antigens are described.

BACKGROUND Campylobacter jejuni is a major cause of foodborne disease having chickens as an important reservoir. Its control at the farm would lower the contamination of the final products and therefore also lower the risk of transmission to humans. At the farm, C. jejuni is rarely found in chickens before they reach 2 weeks of age. Past studies have shown that maternal antibodies could hamper ...

Hens (White Leghorn) were immunized with different protein antigens and antibodies were isolated from eggs by PEG precipitation. To determine experimental conditions under which optimal antibody titers are reached the antigen dose and the mode of application were varied. Injecting the antigen three times every four weeks in the absence of adjuvant led to a phase like immune response. A plateau ...

The present paper describes the methods for producing egg yolk antibodies against Bordetella bronchiseptica. In comparative experiments, avian and mammalian antibodies were applicated in diagnostic test systems. The results of these investigations show the possibility of substituting mammalian antibodies for IgY in enzyme immunoassay and indirect immunofluorescence.

Solar Cycle 19 was probably the greatest solar cycle over last four centuries and significantly disrupted solar-terrestrial environments with a number of eruptions resultant geomagnetic storms. At its peak, International Geophysical Year (IGY: 1957 -- 1958) organised by international collaborations benefitted scientific developments, capturing multiple unique extreme space weather events includ...

The objective of this study was to determine the effect of different levels of dietary methionine on selected immune parameters of young turkeys. A total of 357 one-day-old female Hybrid Converter turkeys were randomly divided into three groups with low, medium and high level of dietary me- thionine (LM, MM, HM) of seven replicates each. Methionine was added to the basal diet (LM) at 0.16% (MM)...

Salmonella enteritidis (SE) colonizes the intestinal tract of poultry and causes food born illness in humans. Reduction of (SE) colonization in the intestinal tract of poultry reduces potential carcass contamination during slaughter. The purpose of this study was to investigate the effect of SE-specific yolk immunoglobulin (IgY) on prevention of SE colonization in orally infected broiler chicke...

Active immunization with Streptococcus mutans glucan binding protein B (GBP-B) has been shown to induce protection against experimental dental caries. This protection presumably results from continuous secretion of salivary antibody to GBP-B, which inhibits accumulation of S. mutans within the oral biofilm. The purpose of this study was to explore the influence of short-term (9- or 24-day) pass...

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