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Production and characterization of egg yolk antibodies against bovine alimentary tract pathogens

100%

Sitnik O., Jawor P., Kopec W., Skiba T., Stefaniak T.

Polish Journal of Veterinary Sciences

2013

tom 16

nr 2

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 of eggs sampled from non-vaccinated hens located in neighbouring cages. The antibody activity was measured by ELISA. All used vaccines induced the rise of IgY antibody in egg yolks. Based on the duration and the highest level of IgY antibody against bovine alimentary tract pathogens C vaccine was further used in next two trials for vaccination of 1000 hens each time. Double immunization seems to be enough in mounting response against examined pathogens for several weeks. Immunization with C vaccine allowed to harvest eggs with satisfactory levels of E.coli, rotavirus and coronavirus IgY antibodies which may be used to evaluate their protective effect by oral administration in calves.

Rozwój układu odpornościowego u przeżuwaczy w okresie pre- i postnatalnym

86%

Stefaniak T., Chelmonska-Soyta A., Bajzert J., Jawor P., Rzasa A., Sitnik O.

Medycyna Weterynaryjna

2012

tom 68

nr 09

The development of the immune system in ruminants begins at the early stages of fetal life. In late pregnancy, the fetus is capable of immune response against foreign antigens. The primary lymphatic organ for B lymphocytes is the ileal Peyer’s patch. High susceptibility of young ruminants to infections is related to the failure of passive transfer (FPT). FPT or a partial failure of passive transfer (PFPT) may be caused by different factors depending on the newborn, the dam or the human. The understanding of the function of the neonatal immune system and its differences from the adult immune system should help in avoiding husbandry mistakes and in protecting the animals’ health.

Ograniczanie wyników

1 Medycyna Weterynaryjna

1 Polish Journal of Veterinary Sciences

2 Jawor P.

2 Sitnik O.

2 Stefaniak T.

1 Bajzert J.

1 Chelmonska-Soyta A.

1 Kopec W.

1 Rzasa A.

1 Skiba T.

1 2013

1 2012

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Production and characterization of egg yolk antibodies against bovine alimentary tract pathogens

Rozwój układu odpornościowego u przeżuwaczy w okresie pre- i postnatalnym