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1

Survey of antimicrobial susceptibility among some pathogenic and commensal bacteria isolated from pigs in Lithuania

100%
Ruzauskas M., Klimiene I., Zienius D.
Medycyna Weterynaryjna
|
2006
|
tom 62
|
nr 04
397-400
Antimicrobial susceptibility of isolated enterotoxigenic E. coli, Salmonella enterica serovar Choleraesuis, Pasteurella multocida and Streptococcus suis from pigs was tested in the Veterinary Institute of the Lithuanian Veterinary Academy. Commensal E. coli and Enterococcus faecalis were also included in the testing as commensal bacteria. Clinical and pathological material was investigated from various regions of the country. Isolation and identification of bacteria was done using common methods. The agar diffusion method according to NCCLS guidelines was applied for antimicrobial susceptibility testing. Enterotoxigenic E. coli showed the highest resistance to tetracycline (67%), ampicillin (52%) and sulfamethoxazole-trimethoprim (43%). Not less than 90% of these bacteria were susceptible to colistin, florfenicol and ceftiofur. Salmonella Choleraesuis demonstrated the highest resistance to tetracycline (53%). Florfenicol, ceftiofur and enrofloxacin were effective against most strains of salmonella. Pasteurella multocida in most cases were susceptible to all the tested antimicrobials, however 20% of the isolates were resistant to sulfamethoxazole-trimethoprim. Streptococcus suis demonstrated the highest resistance to tetracycline (43%), lincomycin (40%), sulfamethoxazole- -trimethoprim (40%), and erythromycin (30%). Ceftiofur was the most effective against S. suis. Commensal E. coli showed less resistance than enterotoxigenic E. coli, however not less than 25% of isolates were resistant to tetracycline, sulfamethoxazole-trimethoprim and ampicillin. All the tested Enterococcus faecalis were susceptible to vancomycin and ceftiofur and 80% of enterococci were resistant to tetracycline.
2

Comparative molecular characterisation of the rabies virus in the Lithuanian raccoon dog population

100%
Zienius D., Zilinskas H., Sajute K., Stankevicius A.
Bulletin of the Veterinary Institute in Puławy
|
2009
|
tom 53
|
nr 2
179-182
The objective of this work was to determine nucleoprotein gene sequences and genetically characterise the rabies virus (RABV) isolates in order to know which virus group (biotype) is circulating in the raccoon dog population in Lithuania. For rabies virus phylogenetic characterisation, 16 RABV isolates from raccoon dogs were used. The isolates were selected according to different geographical location. A 400 bp region of the nucleoprotein gene was sequenced and analysed together with reference raccoon dog sequences of the RABV isolates from Estonia, Latvia, Russia, Poland, and other West European countries available in the GenBank. Phylogenetic analysis revealed that the isolates from different parts of Lithuania were closely related and belonged to RABV genotype 1 and showed significant bootstrap support inside North-Eastern Europe group of raccoon dog RABV. The phylogenetic relationships between Lithuanian raccoon dogs RABV isolates and those from neighbouring countries showed 97.7%- 99.5% identity. A close genetic relationship between the raccoon dog and fox rabies isolates from different regions of Lithuania (99.5%) was identified, suggesting that rabies viruses circulating in raccoon dogs and foxes in this region might have the same origin.
3

The 1995-2000 ORV program in Lithuania wildlife

100%
Zienius D., Petkevicius S., Vysniauskas A.
Medycyna Weterynaryjna
|
2005
|
tom 61
|
nr 10
4

Serosurvey of wild boar population for porcine parvovirus and other selected infectious diseases in Lithuania

100%
Lelesius R., Sereika V., Zienius D., Michalskiene I.
Bulletin of the Veterinary Institute in Puławy
|
2006
|
tom 50
|
nr 2
5
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Phylogenetic characterization of Canine Parvovirus VP2 partial sequences from symptomatic dogs samples

88%
Zienius D., Lelesius R., Kovaliauskis H., Stankevicius A., Salomskas A.
Polish Journal of Veterinary Sciences
|
2016
|
tom 19
|
nr 1
The aim of the present study was to detect canine parvovirus (CPV) from faecal samples of clinically ill domestic dogs by polymerase chain reaction (PCR) followed by VP2 gene partial sequencing and molecular characterization of circulating strains in Lithuania. Eleven clinically and antigen-tested positive dog faecal samples, collected during the period of 2014-2015, were investigated by using PCR. The phylogenetic investigations indicated that the Lithuanian CPV VP2 partial sequences (3025-3706 cds) were closely related and showed 99.0-99.9% identity. All Lithuanian sequences were associated with one phylogroup, but grouped in different clusters. Ten of investigated Lithuanian CPV VP2 sequences were closely associated with CPV 2a antigenic variant (99.4% nt identity). Five CPV VP2 sequences from Lithuania were related to CPV-2a, but were rather divergent (6.8 nt differences). Only one CPV VP2 sequence from Lithuania was associated (99.3% nt identity) with CPV-2b VP2 sequences from France, Italy, USA and Korea. The four of eleven investigated Lithuanian dogs with CPV infection symptoms were vaccinated with CPV-2 vaccine, but their VP2 sequences were phylogenetically distantly associated with CPV vaccine strains VP2 sequences (11.5-15.8 nt differences). Ten Lithuanian CPV VP2 sequences had monophyletic relations among the close geographically associated samples, but five of them were rather divergent (1.0% less sequence similarity). The one Lithuanian CPV VP2 sequence was closely related with CPV-2b antigenic variant. All the Lithuanian CPV VP2 partial sequences were conservative and phylogenetically low associated with most commonly used CPV vaccine strains.
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