761 research outputs found
POST-THAW QUALITY OF DOG SEMEN FROZEN OVER NITROGEN VAPOURS OR IN A BIOLOGICAL FREEZER AFTER SINGLE OR TWO-STEP GLYCEROL ADDITION
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The tadpole of Hypsiboas guentheri (Boulenger) (Anura: Hylidae)
No full textAlmeida-Silva, Diego, Neto, Antonio Mollo, Mendes, Humberto Fonseca, Verdade, Vanessa Kruth (2016): The tadpole of Hypsiboas guentheri (Boulenger) (Anura: Hylidae). Zootaxa 4179 (1): 139-143, DOI: http://doi.org/10.11646/zootaxa.4179.1.1
Mauro Teixeira Jr, Francisco Dal Vechio, Pedro M. Sales Nunes, Antonio
No full textJr, Mauro Teixeira, Vechio, Francisco Dal, Sales Nunes, Pedro M., Neto, Antonio Mollo, Lobo, Luciana Moreira, Storti, Luis Fernando, Gaiga, Renato Augusto Junqueira, Dias, Pedro Henrique Freire, Rodrigues, Miguel Trefaut (2013): Mauro Teixeira Jr, Francisco Dal Vechio, Pedro M. Sales Nunes, Antonio. Zootaxa 3646 (2): 200-200, DOI: http://dx.doi.org/10.11646/zootaxa.3646.2.1
Indicator-based approach for the assessment of intrinsic physical vulnerability of the built environment to hydro-meteorological hazards: Review of indicators and example of parameters selection for a sample area
No full textBuildings located in mountainous areas are prone to be damaged by hydro-meteorological events, such as
landslides and floods. The assessment of the physical vulnerability (PV) of the exposed built environment is a key
factor in geo-hazard-related risk mitigation. The latter requires the knowledge of the event magnitude and
building characteristics. For areas where scarce or no records of the past events are available, indicators-based
methodologies are used, allowing to estimate the component of the PV that only depends on the building
properties (susceptibility). In this view, this paper gives an overview of the indicators most used in literature,
with a novel indicator-by-indicator approach; then, five of them are selected for a sample area located in a
mountainous zone in southern Italy, prone to landslide and debris flood events. The chosen indicators are:
Structural typology, State of maintenance, Building orientation, Number of floors and Number of façades with
large openings, for each of which multiple configurations are defined and weighed, in reason of the expected
ability of the considered configuration to withstand in case of calamity. This approach has several advantages,
such as user-friendliness, flexibility of use, possibility of being updated over time and helpfulness for further
purposes
Diagnostic imaging in the pregnant bitch: risks, advantages, and disadvantages
No full textDiagnostic imaging techniques are routinely used in bitches during pregnancy. Ultrasound examination (UE) and radiographic imaging (RI) are the two most frequently employed exams, for pregnancy diagnosis, assessment of fetal vitality and parturition date prediction, and for determination of litter size, respectively. In human medicine, the effects of radiation exposure resulting from diagnostic imaging, as well as radiation thresholds above which the risk of permanent damage to the offspring is significant, are well documented. Although no such information is available in veterinary medicine, breeders are increasingly skeptical about the use of X-rays in bitches in late-stage pregnancy, both because of the potential harm caused by the stress of the exam and because of the direct effects of radiation on the dam and fetuses. Stress is known to exert an effect in the reproductive processes in many species with one of the greatest stressors being the separation of the bitch from the pups for transport to the veterinary clinic during or right after parturition. This review also demonstrates that the harm resulting from radiation exposure from a radiographic study in a bitch during late-stage pregnancy and for its fetuses, who have already completed organogenesis, is poorly researched. While breeders’ hesitations may be perceived as unfounded by the veterinarians, it is crucial that they are taken into consideration and that clear communication between the breeder and veterinarian is established. Owners should be informed of the lack of studies on the subject in the domestic dog but also presented the available information for other species including the human
Prevalence of cesarean sections in swiss Bernese Mountain Dogs (2001–2020) and identification of risk factors
No full textAbstract Background Dystocia is an important limiting factor in animal breeding due to its cost, stress for the mother and risk of death for the neonates. Assessment of incidence and characteristics of dystocia and the inherent risk of Cesarean section are of major importance. The aim of the present study was to evaluate the reproductive performance of Bernese Mountain Dogs in Switzerland, with a particular focus on the prevalence of Cesarean sections due to dystocia, and identification of possible risk factors. Results The investigated population included 401 bitches, 207 sires, and 1127 litters. Litter size was significantly influenced by age and parity of the dam. Incidence of Cesarean section was 30.4%, with 2.0% of procedures being elective. History of previous Cesarean section, age of the dam, and a small litter size significantly influenced the risk for Cesarean section. The stillbirth rate was 12.0%, and the number of stillborn pups was significantly higher for litters delivered by Cesarean sections after birth of the first pup. The inbreeding coefficient had a low to non-significant impact on all reproductive parameters (e.g., litter size, number of stillborn pups). Conclusion The sample of Bernese Mountain Dogs of our study had an increased prevalence of Cesarean sections compared to the literature, and advanced age of the dam, litter size and prior Cesarean sections in the dam’s reproductive history was identified as significantly influencing factors. In order to improve pups’ survival rate, elective Cesarean section may be indicated in bitches that have had a previous Cesarean-section/s, are of advanced age, and/or have a small litter
RICERCA-AZIONE SUL SIGNIFICATO DELL’ESPERIENZA EDUCATIVA NELLA SCUOLA PRIMARIA E DELL’INFANZIA
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