Original Scientific Article
Clinical testing of combined vaccine against enzootic pneumonia in industrial pig farming in Bulgaria
Roman Pepovich
*
,
Branimir Nikolov
,
Ivo Sirakov
,
Krasimira Genova
,
Kalin Hristov
,
Elena Nikolova
,
Radka Hajiolova
,
Boika Beltova
Received: 27 April 2015
Received in revised form: 10 July 2015
Accepted: 13 July 2015
Available Online First: 24 July 2015
Published on: 15 October 2015
Correspondence: Roman Pepovich, rpepovich@abv.bg
Abstract
In the pig farm with signs of a respiratory disease complex and laboratory confirmed enzootic pneumonia, the prophylactic efficacy of the combination vaccine (M. hyo+PCV2), a single injection administered intramuscularly 21 days after birth, at a dose of 2 ml was tested. The clinical condition, pathological changes in the lungs and some epidemiological and economic results were reported. It was found that vaccinated pigs are in a better clinical condition in comparison with the control group. Morbidity in the rearing period was reduced from 16.3% in the control group to 6.0% in vaccinated pigs, and in the fattening period, respectively, from 30.6% in the control group to 10.0% in the vaccinated group. Pathological features in the lung characteristic for the enzootic pneumonia in the vaccinated pigs were reduced from 25.5%±7.24 to 4.0%±2.44, and PCVI - from 13.0%±4.66 to 0%. Vaccination of pigs has been received and a higher average daily gain in groups for rearing (0.624 kg) and for fattening (0.723 kg) was recorded.
Keywords: Enzootic pneumonia, Mycoplasma hyopneumoniae, pigs, vaccination
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Acknowlegment
This research work was carried out with the support of University of Forestry and the project BG051PO001-3.3.06-0056 “Support for the development of young people in the University of Forestry”, Operational Programme “Human Resources Development” financed by the European Social Fund of the European Union.
Copyright
© 2015 Pepovich R. This is an Open Access article distributed under the terms of the Creative Commons Attribution-Non Commercial License (http://creativecommons.org), which permits unrestricted non-commercial use, distribution, and reproduction in any medium provided the original work is properly cited.
Conflict of Interest Statement
The authors declared that they have no potential conflict of interest with respect to the authorship and/or publication of this article.
Citation Information
Macedonian Veterinary Review. Volume 38, Issue 2, Pages 195-201, p-ISSN 1409-7621, e-ISSN 1857-7415, DOI: 10.14432/j.macvetrev.2015.07.051, 2015
10.14432/j.macvetrev.2015.07.051
