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At least 199 records · Page 11Linked to original sources
PubMed2005

Alveolar echinococcosis in the zoological garden Basle.

Alveolar echinococcosis (AE) is a rare, but potentially severe zoonotic disease caused by Echinococcus (E.) multilocularis. Recent findings indicated an increasing importance of AE for non-human primates living in regions endemic for E. multilocularis. The death of five cynomolgus monkeys (Macaca fascicularis) and a lowland gorilla (Gorilla g. gorilla) due to AE raised concern about the incidence of this parasite in the Basle Zoo. Consequently, a project was initiated to investigate the prevalence amongst an affected group of cynomolgus monkeys, as well as in foxes and mice. Three out of 46 monkeys were seropositive for E. multilocularis antigen. In two of these monkeys and in another three animals, which were seronegative, structures compatible with metacestodal cysts were observed using ultrasonography. Seven out of 35 free roaming foxes caught at the zoo were positive for an intestinal E. multilocularis copro-antigen ELISA, four of them shed taeniid eggs simultaneously. No lesions compatible with AE were present in 50 necropsied mice from the zoo area. These results indicate that the fox population is a potential source to introduce E. multilocularis and may thus represent a risk for the zoo animals.

Animals↗
PubMed2005

Disseminating a sun safety program to zoological parks: the effects of tailoring.

Previous research found that a sun safety program for visitors at 1 zoo increased sun safety behaviors. This randomized study compared the effects of tailored dissemination materials plus 2 brief follow-up phone calls (tailored group) versus generic materials (basic group) on implementation by other zoos of the previously evaluated sun safety program. Education directors of 126 zoos completed surveys several months following initial dissemination and 1 year later. During Summer 1, 40% of tailored group zoos and 24% of basic group zoos offered visitors at least 1 sun safety activity (odds ratio=2.2, 95% confidence interval=1.0-4.8). During Summer 2, these rates were 34% and 44%, respectively (ns). The pattern of findings suggests that tailoring had no incremental long-term impact and that the generic materials produced a good level of dissemination.

Adult↗
PubMed1979

Zoological origin of gonadotropin subunits and association kinetics.

Mammalian luteinizing hormone (LH) is an association of two dissimilar subunits, alpha and beta. In vitro studies, mainly using difference spectrophotometry, had shown that this phenomenon was slow, especially at low temperatures. If the situation was the same in poikiloterms, it would probably make gonadotropin (GTH) synthesis difficult for these animals in a cold environment. We have found that the formation of a teleost gonadotropin is in fact strikingly more rapid and less thermodependent than formation of mammalian LH. Also, studies with a fish-mammal hybrid molecule have allowed us to estimate the respective influence of the alpha and beta subunits in determining these differences.

Animals↗
PubMed1996

Slurry preparation by high-pressure homogenization for the determination of heavy metals in zoological and botanical certified reference materials and animal feeds by electrothermal atomic absorption spectrometry.

High-pressure homogenization was evaluated for the preparation of slurries suitable for the determination by ETAAS of Cr, Cu, Fe, Mn, Ni and Se in soft organ tissues (liver and kidney), certified reference materials of biological and botanical origin and animal feeds. Frozen fresh organ tissue, (2 g) or certified reference material or dried, ground plant material (0.1 g) was blended, at high speed with 20 ml of ethanol-water (1 + 9 v/v) containing 0.25% m/m of tetramethylammonium hydroxide and the resulting mixture was subjected to homogenization at 38.9 MPa. After four passes through the homogenizer, the resulting solution was suitable for analysis by ETAAS. Capping the flat valve head of the homogenizer with a ruby disc appreciably reduced (but did not eliminate) metal contamination introduced by the processing. Homogenization of botanical reference materials or dried animal feeds resulted in preparations with variable amounts of residual fibres and particulate matter in the resulting suspensions. Nonetheless, all the Cu and Mn and virtually all of the Fe had been transferred to the supernatant fraction and remained with that fraction for at least 10 d. The addition of EDTA to the solvent modestly increased the mobilization of Fe from the matrix but also increased the contamination from the homogenizer. The slopes of the calibration curves generated by the method of standard additions were not significantly different from those of calibration curves generated with aqueous standards in a homogenized blank indicating that there was no significant matrix effect for any of the analytes in the nine reference materials, liver or kidney or the five animal feed samples and that aqueous standards could be used to calibrate the instrumental response.

Animal Feed↗