Veterinární medicína, 2006 (vol. 51), issue 8
Antipredator pheromones in amphibians: a review
J. Rajchard
Vet Med - Czech, 2006, 51(8):409-413 | DOI: 10.17221/5563-VETMED 
Specific chemosignals (pheromones) have an important role in the antipredator behaviour in amphibians and other vertebrates. However, relatively little is known about the occurrence of chemical alarm cues just in amphibians. The site of chemosignals perception is vomeronasal system. The presence of the vomeronasal system in aquatic amphibians indicates that it did not arise as an adaptation to terrestrial life. Predators may inhibit mate search of some species, and male newts probably take greater risks during the breeding season. Field tests demonstrated different responses to male newt extract - probably trade-off that incorporates risk and resource...
Restriction fragment length polymorphism of ORF6 and ORF7 genes of porcine reproductive and respiratory syndrome virus (PRRSV) vaccine strains registered in the Czech Republic
E. Kosinova, I. Psikal
Vet Med - Czech, 2006, 51(8):414-422 | DOI: 10.17221/5565-VETMED
Restriction fragment length polymorphism (RFLP) of open reading frames 6 and 7 was applied to comparative genetic analysis of live attenuated vaccine strains (Amervac-PRRS/A3, Porcilis PRRS, Ingelvac PRRS) of porcine reproductive and respiratory syndrome virus (PRRSV), registered in the Czech Republic, six field viruses (L-588, L-1606, L-2053, L-3305, L-6558, L-6791), and three PRRSV local field isolates (CAMP V-502, CAMP V-503, VOS 2878) found in pig herds in the Czech Republic and Slovak Republic. The set of restriction enzymes Hae II, Alu I and BsaJ I allowed the differentiation of local field isolates, field viruses of PRRS, and vaccine strains...
The ability of recovery in common carp after nitrite poisoning
H. Kroupova, J. Machova, Z. Svobodova, V. Piackova, M. Smutna
Vet Med - Czech, 2006, 51(8):423-431 | DOI: 10.17221/5567-VETMED
The aim of the study was to assess the ability of recovery in common carp after nitrite poisoning and to distinguish the difference in nitrite poisoning of carp at two different chloride concentrations in water. Two groups of carp (group 1 and 2) were exposed to environmental nitrite concentration of 1.45 mmol/l NO2- at different chloride concentrations (group 1: 0.31 mmol/l Cl- and group 2: 3.73 mmol/l Cl-) for 48 hours. After that, they were transferred into nitrite-free water. In the group 1 mortality of 51% occurred during nitrite exposure and further 11% mortality was observed after 24 h in nitrite free...
Serum lidocaine concentration after epidural administration in dogs
D. Vnuk, N. Lemo, B. Radisic, V. Nesek-Adam, A. Musulin, J. Kos
Vet Med - Czech, 2006, 51(8):432-436 | DOI: 10.17221/5569-VETMED
The pharmacokinetics of lidocaine deals with the measurement of lidocaine concentration in the blood and its changes over time. The toxicity of lidocaine is a function of its peak plasma concentration, which in turn depends on several factors including total dose and rates of systemic absorption and elimination. The aim of the study was to assess serum levels of lidocaine after a single shot epidural injection in dogs seen in daily practice. The study included nine dogs undergoing different types of surgery. The animals were anesthetized with a combination of diazepam and ketamine; then lidocaine was injected epidurally. Blood samples for measurement...