Recent exploitation of the avian immune system has highlighted its suitability for the generation of high-quality, high-affinity antibodies to a wide range of antigens for a number of therapeutic and biotechnological applications. The glycosylation profile of potential immunoglobulin therapeutics is species specific and is heavily influenced by the cell-line/culture conditions used for producti...

Ostrich raising around the world have some key factors and farming profit depend largely on information and ability of farmers to rear these animals. Non fertilized eggs from ostriches are discharged in the reproduction season. Staphylococcus aureus and Escherichia coli are microorganisms involved in animal and human diseases. In order to optimize the use of sub products of ostrich raising, non...

Serological surveillance and vaccination are important strategies for controlling infectious diseases of food production animals. However, the compatibility of these strategies is limited by a lack of assays capable of differentiating infected from vaccinated animals (DIVA tests) for established killed or attenuated vaccines. Here, we used next generation phage-display (NGPD) and a 2-proportion...

Immunodetection of methicillin-resistant Staphylococcus aureus (MRSA) by conventional methods employing mammalian immunoglobulins has unknown detection limits, and often yields false-positive results because of the presence of S. aureus protein A, which binds the Fc region of mammalian IgG. In this study, a new PBP2a-specific chicken IgY antibody was developed in inbred and conventional chicken...

Immunoglobulins (Igs), the key effectors of the adaptive immune system, mediate the specific recognition of foreign structures, i.e. antigens. In mammals, IgM production commonly precedes the production of IgG in the response to an infection. The reptilian counterpart of IgG is IgY, but the exact kinetics of the reptilian immune response are less well known. Boid inclusion body disease (BIBD), ...

Recently it has been reported, that immunoglobulin Y (IgY) can be used instead of polyclonal antibodies extracted from mammals (IgG) for the purpose of diagnosis and therapy. These antibodies are found to have better properties in terms of specificity and ease of large-scale production. In addition, IgY binds neither to mammalian complement or Fc-receptors nor does it interfere with rheumatoid ...

egg-laying hens were immunized with the echis carinatus venom and the resulting antibodies were extracted from egg yolk by four different purification methods. the chicken egg yolk antibodies were purified by the water dilution method, polyethylene glycol (peg) and ammonium sulphate precipitation method, chloroform extraction and the lithium sulphate precipitation method. these methods were com...

Emerging infectious diseases and antibiotic resistance impose major threats to animals humans throughout the world. The Emergence of various pandemic alarms need for prophylactic therapeutic regimens in protecting both humans. Hence, researchers are trying identify newer methodologies overcome existing issues better immune response resistance. In this view, chicken immunoglobulin Y (IgY) has ga...

In mammals the transfer of passive immunity from mother to young is mediated by the MHC-related receptor FcRn, which transports maternal IgG across epithelial cell barriers. In birds, maternal IgY in egg yolk is transferred across the yolk sac to passively immunize chicks during gestation and early independent life. The chicken yolk sac IgY receptor (FcRY) is the ortholog of the mammalian phosp...

Aim of the study was to evaluate the effect of immunization of hens with bovine vaccines (C, R, T) on the course of IgY antibodies production against selected bovine E. coli strains, rota- and coronaviruses in egg yolk in farm conditions. The hens (40 individuals per group) were vaccinated twice, subcutaneously in four week interval and eggs were harvested once a week. Control group consisted o...