Proceedings of the International Scientific and Practical Conference “Digital agriculture - development strategy” (ISPC 2019)

Immunological reactivity of calves with associated respiratory infections

Authors
Antonina Poryvaeva, Elena Pechura, Oksana Tomskikh, Alexander Krasnoperov
Corresponding Author
Elena Pechura
Available Online June 2019.
DOI
10.2991/ispc-19.2019.33How to use a DOI?
Keywords
immunological reactivity, acute respiratory viral infections, bovine virus 1, bovine rotavirus B, E. coli 99, Eimeria bovis, calves, associated infections
Abstract

Associated respiratory infections are a special type of infection. They have a combined effect on the organism. We conducted this study in order to determine impairment of immunological reactivity in calves aged from 5 days to 4 months for respiratory diseases caused by pathogen associations. Determination of etiological agents was carried out by a complex of diagnostic studies: clinical examination of calves, serological screening of paired blood sera from diseased calves; ELISA, PCR, microbiological, scatological and hematological studies. Among the examined animals, 19% had no clinical signs of the disease and there were no positive laboratory tests for the presence of pathogens. The etiological role in the development of respiratory diseases in calves belongs to the causative agent PI-3. Associating pathogens in the virus group are: rotavirus B bovine and Bovine herpesvirus 1. In the virus-bacteria group: E. coli 99. In the virus-bacteria and invasive group: rotavirus B bovine, E. coli 99 and Eimeria bovis. An index analysis of hemogram indices gives an idea of the complex changes in the immune system of calves with mixed respiratory infections. Mono-infections cause a moderate compensatory response of the organism. Endogenous intoxication with the “virus-bacteria” and “virus-bacteria and invasive” infections is expressed due to the poly-antigenic load on the body.

Copyright
© 2019, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the International Scientific and Practical Conference “Digital agriculture - development strategy” (ISPC 2019)
Series
Advances in Intelligent Systems Research
Publication Date
June 2019
ISBN
978-94-6252-733-1
ISSN
1951-6851
DOI
10.2991/ispc-19.2019.33How to use a DOI?
Copyright
© 2019, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

TY  - CONF
AU  - Antonina Poryvaeva
AU  - Elena Pechura
AU  - Oksana Tomskikh
AU  - Alexander Krasnoperov
PY  - 2019/06
DA  - 2019/06
TI  - Immunological reactivity of calves with associated respiratory infections
BT  - Proceedings of the International Scientific and Practical Conference “Digital agriculture - development strategy” (ISPC 2019)
PB  - Atlantis Press
SP  - 147
EP  - 150
SN  - 1951-6851
UR  - https://doi.org/10.2991/ispc-19.2019.33
DO  - 10.2991/ispc-19.2019.33
ID  - Poryvaeva2019/06
ER  -