Impact of coccidial infection on vaccine- and vvIBDV in lymphoid tissues of SPF chickens as detected by RT-PCR.

Impact of coccidial infection on vaccine- and vvIBDV in lymphoid tissues of SPF chickens as detected by RT-PCR. Research Abstract Details 

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Impact of coccidial infection on vaccine- and vvIBDV in lymphoid tissues of SPF chickens as detected by RT-PCR. Abstract Text:

BACKGROUND: This study aimed at investigating a potential effect caused by coccidia on the immune response to vaccine- and very virulent infectious bursal disease virus (vvIBDV) in SPF chickens. METHODS: Two groups of three weeks old SPF chickens were vaccinated prior to inoculation with coccidia and challenge with virulent IBDV, all within a period of eight days. Two control groups were similarly treated, except that challenge with field virus was omitted in one group while inoculation with coccidia was omitted in the other group. Clinical signs, lesions in the intestines caused by coccidia, lesions in the bursa of Fabricius caused by IBDV, IBDV-antibody titres, and virus detection by reverse transcription polymerase chain reaction (RT-PCR) were compared among the groups. Lymphoid tissues and swab samples were analysed by general RT-PCR, and positive results were identified by strain specific duplex (DPX) RT-PCR. RESULTS: In the triple-infected groups, vaccine strain IBDV was detected in spleen and thymus tissues, and no field virus was detected in bursa samples, contrary to the double-infected groups. CONCLUSION: The results suggest an enhancing effect on the immune response caused by subclinical coccidiosis and vvIBDV acting in concert.

Impact of coccidial infection on vaccine- and vvIBDV in lymphoid tissues of SPF chickens as detected by RT-PCR. Publishing Authors By Initials

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Impact of coccidial infection on vaccine- and vvIBDV in lymphoid tissues of SPF chickens as detected by RT-PCR. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Acta veterinaria Scandinavica

VOLUME: 48

Page Numbers: 17

Journal Abbreviation: Acta Vet. Scand.

ISSN: 1751-0147

DAY: 4

MONTH: 09

YEAR: 2006

Impact of coccidial infection on vaccine- and vvIBDV in lymphoid tissues of SPF chickens as detected by RT-PCR. Information

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LANGUAGE: eng

NlmUniqueID: 370400

Impact of coccidial infection on vaccine- and vvIBDV in lymphoid tissues of SPF chickens as detected by RT-PCR. Keywords Mesh Terms:

KEYWORDS: Virulence

MESH TERMS: veterinary

Chemical & Substance for Abstract: Impact of coccidial infection on vaccine- and vvIBDV in lymphoid tissues of SPF chickens as detected by RT-PCR. Information

Substance Name: RNA, Viral

Registry Number: 0

Grant and Affiliation Information for Impact of coccidial infection on vaccine- and vvIBDV in lymphoid tissues of SPF chickens as detected by RT-PCR.

AFFILIATION: Danish Institute for Food and Veterinary Research, Hangøvej 2, DK-8200 Aarhus N, Denmark. ska@dfvf.dk

Country: England

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MEDLINETA: Acta Vet Scand

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