Comparison of Egg-Yolk and Serum Antibody Titers to Four Avian Viruses by Enzyme-Linked Immunosorbent Assay Using Paired Field Samples
Eggs and blood were collected from 11 hens in each of nine broiler-breeder flocks in Quebec. Serum and egg-yolk extracts were assayed for antibody titers to infectious bursal disease virus (IBDV), infectious bronchitis virus (IBV), Newcastle disease virus (NDV), and reovirus (RV) by a commercial enz...
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Published in: | Avian diseases Vol. 33; no. 4; pp. 643 - 648 |
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Main Authors: | , |
Format: | Journal Article |
Language: | English |
Published: |
United States
American Association of Avian Pathologists, Inc
01-10-1989
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Subjects: | |
Online Access: | Get full text |
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Summary: | Eggs and blood were collected from 11 hens in each of nine broiler-breeder flocks in Quebec. Serum and egg-yolk extracts were assayed for antibody titers to infectious bursal disease virus (IBDV), infectious bronchitis virus (IBV), Newcastle disease virus (NDV), and reovirus (RV) by a commercial enzyme-linked immunosorbent assay (ELISA) kit. Comparison was made between egg-yolk and serum antibody titers by a regression analysis. A high correlation was observed between serum and yolk antibody titers to all the viruses tested (r = 0.9 for IBDV, 0.84 for IBV, 0.84 for NDV, and 0.91 for RV). Antibody monitoring of commercial breeder flocks using egg yolk instead of serum with commercial ELISA plates is thus feasible and is recommended. /// A partir de cada uno de 9 lotes de reproductoras de engorde, se tomaron 11 muestras de sangre y huevos procedentes de la misma ave. Los extractos de yema de huevo y los sueros fueron analizados para determinar los títulos de anticuerpos contra la enfermedad infecciosa de la bolsa, bronquitis infecciosa, enfermedad de Newcastle y reovirus. Para los análisis se utilizó el inmunoensayo con enzimas asociadas (ELISA), usando placas comercialmente disponibles. La comparación entre los títulos de anticuerpos presentes en el suero y en la yema fue hecha por medio de un análisis de regresión. Para todos los 4 virus examinados, se observó una correlación alta entre los títulos de anticuerpos presentes en los sueros y en las yemas (r = 0.9 para la enfermedad infecciosa de la bolsa, 0.84 para bronquitis y Newcastle, y 0.91 para reovirus). Se recomienda entonces utilizar los extractos de yema en vez de los sueros para examinar periódicamente, por medio de la prueba ELISA, los niveles de anticuerpos presentes en las aves. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2 |
ISSN: | 0005-2086 1938-4351 |
DOI: | 10.2307/1591138 |