In recent years, the use of in-feed antibiotics for growth and disease prevention in livestock production has been under severe scrutiny. The use and misuse of in-feed antibiotics has led to problems with drug residue...In recent years, the use of in-feed antibiotics for growth and disease prevention in livestock production has been under severe scrutiny. The use and misuse of in-feed antibiotics has led to problems with drug residues in animal products and increased bacterial resistance. Chicken egg yolk antibodies (IgY) have attracted considerable attention as an alternative to antibiotics to maintain swine health and performance. Oral administration of IgY possesses many advantages over mammalian IgG such as cost-effectiveness, convenience and high yield. This review presents an overview of the potential to use IgY immunotherapy for the prevention and treatment of swine diarrhea diseases and speculates on the future of IgY technology. Included are a review of the potential applications of IgY in the control of enteric infections of either bacterial or viral origin such as enterotoxigenic Escherichia coil, Salmonella spp., rotavirus, porcine transmissible gastroenteritis virus, and porcine epidemic diarrhea virus. Some potential obstacles to the adoption of IgY technology are also discussed.展开更多
The dot-immunobinding assay was applied to investigate the characteristics of chicken egg yolk antibodies. This method of assay was proved to be a rapid and simple method to demonstrate and characterize the egg-yolk a...The dot-immunobinding assay was applied to investigate the characteristics of chicken egg yolk antibodies. This method of assay was proved to be a rapid and simple method to demonstrate and characterize the egg-yolk antibody IgY in comparison with the traditional ELISA assay. By using the BandScan software, the gray scale value of dots and the background could be determined. According to the intensity of dots (gray scale value) compared to the standard sample of 10μg, how much IgY remained can be determined in a shorter time.展开更多
基金supported by funds from the National Natural Science Foundation of China(310010533037105330871806)
文摘In recent years, the use of in-feed antibiotics for growth and disease prevention in livestock production has been under severe scrutiny. The use and misuse of in-feed antibiotics has led to problems with drug residues in animal products and increased bacterial resistance. Chicken egg yolk antibodies (IgY) have attracted considerable attention as an alternative to antibiotics to maintain swine health and performance. Oral administration of IgY possesses many advantages over mammalian IgG such as cost-effectiveness, convenience and high yield. This review presents an overview of the potential to use IgY immunotherapy for the prevention and treatment of swine diarrhea diseases and speculates on the future of IgY technology. Included are a review of the potential applications of IgY in the control of enteric infections of either bacterial or viral origin such as enterotoxigenic Escherichia coil, Salmonella spp., rotavirus, porcine transmissible gastroenteritis virus, and porcine epidemic diarrhea virus. Some potential obstacles to the adoption of IgY technology are also discussed.
文摘The dot-immunobinding assay was applied to investigate the characteristics of chicken egg yolk antibodies. This method of assay was proved to be a rapid and simple method to demonstrate and characterize the egg-yolk antibody IgY in comparison with the traditional ELISA assay. By using the BandScan software, the gray scale value of dots and the background could be determined. According to the intensity of dots (gray scale value) compared to the standard sample of 10μg, how much IgY remained can be determined in a shorter time.