REPONIVS - Repository of Scientific Institute for Veterinary Medicine of Serbia
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The role of foxes (Vulpes vulpes L.) in the epizootiology and epidemiology of nematode parasitic zoonoses
No full textA large number of foxes, known to carry various parasites, live in the vicinity of Belgrade. Therefore we conducted a postmortem parasitological (pathoanatomic) examination of a total of 357 adult and 102 juveniles hunted in the Belgrade area. Nine species of nematodes were found, namely: Toxocara canis, Toxocara mystax, Toxascaris leonina, Ancylostoma caninum, Uncinaria stenocephala, Spirocerca lupi, Capillaria plica, Trichinella spiralis and Trichuris vulpis. Comparing these results with those found in stray dogs, we concluded that many nematode species were found in both populations. This is of great epizootiological and epidemiological significance in terms of expansion of helminthoses, because of possible urban environmental contamination and subsequent human infection, particularly with Ascaridae and Ancylostomidae species
Biochemical and serological characteristics of Yersinia ruckeri isolates which cause typical and atypical infections in Californian trout (Oncorhynchus mykiss)
No full textWe were able to identify Yersinia ruckeri in 13 cases in the course of testing more than 1000 specimens from trout ponds at different locations over the period from 1978 to 1995. The usual methods of bacterial examination (microscopic, cultural, biochemical, i.e., API 20 E, and serological) were employed. Sorbitol fermentation was used as the biochemical characteristic to differentiate between serotypes. On the basis of agglutination with anti Yersinia ruckeri serum for serotype I (HI 70) and anti Yersinia ruckeri serum for serotype II (BC74), we were able to establish the serotypic affiliation of our isolated strains. Nine of the 13 isolated strains were found to belong to serotype I (HI 70) with regard to antigen structure, while four belonged to serotype II (BC74). Since Yersinia ruckeri occurs as several serotypes, it is important to stress the finding of class I serotypes (HI 70) under Yugoslav conditions. This highly virulent strain can be used for preparation of vaccines and it is applied in immunoprophylaxis
Preparation of a vaccine for intraperitoneal application against furunculosis of rainbow trout
No full textFor immunoprophylaxis against furunculosis of rainbow trout, a vaccine has been prepared on the basis of inactivated antigens of A. salmonicida. Strains of A. salmonicida were isolated from parenchymal organs (kidney, liver, spleen) of rainbow trout suffering from furunculosis and were cultured on tryptose soya agar (TSA). The influence of intraperitoneal vaccination on the serological response of vaccinated rainbow trout was tested as well as the protective effect of the employed vaccine after natural and artificially induced infection. It may be concluded that intraperitoneal vaccination of fish promotes a good serological response and protects the vaccinated fish from exposure to a pathogenic field isolate of the bacteria A. salmonicida
The first occurrence of Chabertia ovina in wild swine
No full textWild swine hunted in the forest near Backi Monostor were examined by pathoanatomical section. The following nematode species were found in the large intestine: Chabertia ovina, Trichostrongylus suis, Globocephalus urosubulatus, Oesophagostomum dentatum and Oesophagostomum longicaudatum. Chabertia ovina was found in 3 wild swine in numbers of 2, 10 and 152 parasites per animal respectively. This is the first recorded occurrence of Chabertia ovina in wild swine in this country
Natural radioactivity of ground waters and soil in the vicinity of the ash repository of the coal-fired power plant "Nikola Tesla" A - Obrenovac (Yugoslavia)
No full textRadioactivity of U, Th and 40K has been tested in the vicinity of the ash repository of coal-fired power plant "Nikola Tesla" A in Obrenovac ( Yugoslavia). By using the methods of alpha and gamma spectrometry, as well as luminescence spectrophotometry, it has been found that the ash repository is a source of radionuclides of the uranium and thorium series and spreads direction of ground waters up to a distance of several hundred metres. The influence of the repository on the soil radioactivity has been found to be minimal, whereas the balance of the first members of series (238U-234U-230Th; 232Th-228Th) has not been disturbed. Copyrigh
Ion-exchange separation of uranium, thorium and plutonium isotopes from environmental samples
No full textRadioisotopes of uranium, thorium and plutonium in water, soil and fertilizer samples, have been chemically separated and determined by alpha-spectrometry method. Radiochemical procedure involving ion-exchange, enabled to determine these isotopes in very low concentrations (under 50 μBq/g). 232U, 229Th and 238Pu were used as tracers for radiochemical yield recoveries (up to 90%). Thin layer sources have been obtained by electrodeposition