Welfare Assessment in Shelter Dogs by Using Physiological and Immunological Parameters

This study aimed to evaluate the state of welfare of a group of dogs during the first month after entering the shelter by using dierent stress parameters. Blood and fecal samples were collected from a group of 71 dogs at the time of admission to the shelter. In 46 of these dogs, sampling was repeated after four weeks. Well-recognized welfare biomarkers, such as fecal cortisol and leukocytes, as well as some innovative parameters ( -endorphin and lysozyme) were determined. Uni- and multivariate statistical analyses were used to evaluate their interactions and changes over time. Neutrophils (p < 0.01), lysozyme (p < 0.05), and fecal cortisol (p < 0.05) decreased, while lymphocytes (p < 0.05) increased after four weeks compared to the first days of being in the shelter, suggesting an improvement in the dogs’ welfare over time. A principal component analysis extracted three bipolar components (PCs), explaining 75% of the variance and indicating negative associations between neutrophil and lymphocyte (PC1), lysozyme and -endorphin (PC2), cortisol and lysozyme (PC3). The associations between these variables within each PC also confirmed the intricate relationships between the hypothalamic-pituitary-adrenal (HPA) axis and the immune system as well as the importance of a multiparametric approach in evaluating welfare

Native immunity and oxidative traits of growing rabbits

[EN] The evaluation of animal welfare through innate immunity (Serum Bactericidal Activity - SBA, Hemolytic Complement Assay - HCA, lysozyme) and the antioxidant status of the body (Reactive Oxygen Substances - ROS and Antioxidant Power of plasma, AP) offers a reliable prognostic and diagnostic tool. The aim of the present study was to investigate trends and correlations between some traits of innate immunity and the oxidative status of fattening rabbits at different ages. Blood samples from 120 New Zealand White fattening rabbits at 45, 55, 65, and 75 d of age were collected and analyzed. The results showed that SBA did not have a normal distribution because of numerous 0 values. Data distribution was normal when only SBA > 0 values were considered. Lysozyme (mean value 27.19 microg/mL) and HCA (mean value 50.84 CH50% ) had stable trends at different ages and showed a tendency that was comparable to that obtained in other animal species. On the contrary, SBA (mean value 42.15%) showed an unexpected positive correlation with lysozyme (P<0.001) and a negative correlation with HCA (P<0.001). Oxygen free-radicals are involved in the pathogenesis of several diseases and oxidative stress alters immune competence. In this experiment, ROS and AP showed mean values of 0.60 mmol H2 O2 and 421.67 micromol HClO, respectively. In this context positive correlation coefficients between oxidative status traits and immune traits (P<0.001) were found, although at a very low level; and surprisingly, only ROS and SBA did not show any significant correlation. In this study it emerged that, even in the absence of evident pathologies, the immune and oxidative traits of fattening rabbits could be affected by environmental stress (weaning, cage, neighbors)Funded by Ricerca Corrente 2006 Istituto Zooprofilattico Sperimentale dell’Umbria e MarcheMoscati, L.; Dal Bosco, A.; Battistacci, L.; Cardinali, R.; Mugnai, C.; Castellini, C. (2008). Native immunity and oxidative traits of growing rabbits. World Rabbit Science. 16(4). doi:10.4995/wrs.2008.616SWORD16

Origins of secondary silica within Yucca Mountain, Nye County, southwestern Nevada

The accuracy of predictions of the hydrologic response of Yucca Mountain to future climate depends largely on how well relations between past climate and hydrology can be resolved. To advance this reconstruction, secondary minerals in and near Yucca Mountain, deposited by ground waters that originated both as surficial recharge at Yucca Mountain and from regional aquifers, are being studied to determine past ground-water sources and chemistries. Preliminary data on stable oxygen isotopes indicate that, although silica (opal, quartz, and chalcedony) and calcite and have formed in similar settings and from somewhat similar fluids, the authors have found no compelling evidence of coprecipitation or formation from identical fluids. If verified by further analyses, this precludes the use of silica-calcite mineral pairs for precise geothermometry. The preliminary data also indicate that opal and calcite occurrences in pedogenic and unsaturated-zone settings are invariably compatible with formation under modern ambient surface or subsurface temperatures. Silica and calcite stable-isotope studies are being integrated with soil geochemical modeling. This modeling will define the soil geochemical condition (climate) leading to opal or calcite deposition and to the transfer functions that may apply at the meteorologic soil unsaturated-zone interfaces. Additional study of pedogenic and unsaturated-zone silica is needed to support these models. The hypothesis that the transformation of vapor-phase tridymite to quartz requires saturated conditions is being tested through stable oxygen-isotope studies of lithophysal tridymite/quartz mixtures. Should this hypothesis be verified, mineralogic analysis by X-ray diffraction theoretically would permit reconstruction of past maximum water-table elevations

Is the role of academics as teachers changing? An exploratory analysis in Italian universities

University teaching is under pressure to evolve in line with the social, cultural and economic changes of modern society. This process inevitably affects the professional profile of academics since it creates an increasing tension between the traditional modes of teaching and the learning styles and professional expectations of students. This article analyses, both theoretically and empirically, the process of change of university teachers in the face of today\u2019s challenges. The empirical analysis is based on the Italian university system, which has always been characterised by an overall reluctance to reforms. This article presents a theoretical framework based on two dimensions, i.e., the teacher/university relationship and the teacher/ student relationship, to investigate the evolution of the professional profile of academics as teachers on the basis of seven teaching practices identified in the literature. The findings show that, besides some limits that are specific to professional bureaucracies, the support of universities is fundamental to promote innovation in teachers\u2019 teaching practices, which are otherwise regulated and shaped only by their disciplinary community

Scholarly Tracks in Emergency Medicine

Over the past decade, some residency programs in emergency medicine (EM) have implemented scholarly tracks into their curricula. The goal of the scholarly track is to identify a niche in which each trainee focuses his or her scholarly work during residency. The object of this paper is to discuss the current use, structure, and success of resident scholarly tracks. A working group of residency program leaders who had implemented scholarly tracks into their residency programs collated their approaches, implementation, and early outcomes through a survey disseminated through the Council of Emergency Medicine Residency Directors (CORD) list-serve. At the 2009 CORD Academic Assembly, a session was held and attended by approximately 80 CORD members where the results were disseminated and discussed. The group examined the literature, discussed the successes and challenges faced during implementation and maintenance of the tracks, and developed a list of recommendations for successful incorporation of the scholarly track structure into a residency program. Our information comes from the experience at eight training programs (five 3-year and three 4-year programs), ranging from 8 to 14 residents per year. Two programs have been working with academic tracks for 8 years. Recommendations included creating clear goals and objectives for each track, matching track topics with faculty expertise, protecting time for both faculty and residents, and providing adequate mentorship for the residents. In summary, scholarly tracks encourage the trainee to develop an academic or clinical niche within EM during residency training. The benefits include increased overall resident satisfaction, increased success at obtaining faculty and fellowship positions after residency, and increased production of scholarly work. We believe that this model will also encourage increased numbers of trainees to choose careers in academic medicine.ACADEMIC EMERGENCY MEDICINE 2010; 17:S87–S94 © 2010 by the Society for Academic Emergency MedicinePeer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/79229/1/j.1553-2712.2010.00890.x.pd

Higher education and unemployment in Europe : an analysis of the academic subject and national effects

This paper examines the impact of an academic degree and field of study on short and long-term unemployment across Europe (EU15). Labour Force Survey (LFS) data on over half a million individuals are utilised for that purpose. The harmonized LFS classification of level of education and field of study overcomes past problems of comparability across Europe. The study analyses (i) the effect of an academic degree at a European level, (ii) the specific effect of 14 academic subjects and (iii) country specific effects. The results indicate that an academic degree is more effective on reducing the likelihood of short-term than long-term unemployment. This general pattern even though it is observed for most of the academic subjects its levels show significant variation across disciplines and countries

Dietary Saccharomyces cerevisiae boulardii CNCM I-1079 positively affects performance and intestinal ecosystem in broilers during a campylobacter jejuni infection

In poultry production, probiotics have shown promise to limit campylobacteriosis at the farm level, the most commonly reported zoonosis in Europe. The aim of this trial was to evaluate the effects of Saccharomyces supplementation in Campylobacter jejuni challenged chickens on performance and intestinal ecosystem. A total of 156 day old male Ross 308 chicks were assigned to a basal control diet (C) or to a Saccharomyces cerevisiae boulardii CNCM I-1079 supplemented diet (S). All the birds were orally challenged with C. jejuni on day (d) 21. Live weight and growth performance were evaluated on days 1, 21, 28 and 40. The histology of intestinal mucosa was analyzed and the gut microbiota composition was assessed by 16S rRNA. Performance throughout the trial as well as villi length and crypt depth were positively influenced by yeast supplementation. A higher abundance of operational taxonomic units (OTUs) annotated as Lactobacillus reuteri and Faecalibacterium prausnitzii and a lower abundance of Campylobacter in fecal samples from S compared to the C group were reported. Supplementation with Saccharomyces cerevisiae boulardii can effectively modulate the intestinal ecosystem, leading to a higher abundance of beneficial microorganisms and modifying the intestinal mucosa architecture, with a subsequent improvement of the broilers' growth performance

Climate services in Brazil: Past, present, and future perspectives

From the devastating effects of the 1877–1879 Great Drought in the Northeast region to the creation of the Center for Weather Forecast and Climate Studies (CPTEC) at the National Institute for Space Research (INPE) in the early 1990 s, Brazil went from a total absence of meteorological expertise to becoming a member of a select group of nations with the infrastructure and technical expertise to build and run a global general circulation model. This article reviews the most critical moments in the development of climate services in Brazil, addressing the evolution of its infrastructure for observation, monitoring, modeling, and prediction, the still incipient efforts in systematically understanding users’ perspectives and needs, and the work required to incorporate the usable science and co-production paradigms into the main centers of production of climate information. Advances and challenges are analyzed, and actions for strengthening the climate services framework are proposed

Salmonella enterica serovar typhimurium exploits inflammation to modify swine intestinal microbiota

Salmonella enterica serovar Typhimurium is an important zoonotic gastrointestinal pathogen responsible for foodborne disease worldwide. It is a successful enteric pathogen because it has developed virulence strategies allowing it to survive in a highly inflamed intestinal environment exploiting inflammation to overcome colonization resistance provided by intestinal microbiota. In this study, we used piglets featuring an intact microbiota, which naturally develop gastroenteritis, as model for salmonellosis. We compared the effects on the intestinal microbiota induced by a wild type and an attenuated S. Typhimurium in order to evaluate whether the modifications are correlated with the virulence of the strain. This study showed that Salmonella alters microbiota in a virulence-dependent manner. We found that the wild type S. Typhimurium induced inflammation and a reduction of specific protecting microbiota species (SCFA-producing bacteria) normally involved in providing a barrier against pathogens. Both these effects could contribute to impair colonization resistance, increasing the host susceptibility to wild type S. Typhimurium colonization. In contrast, the attenuated S. Typhimurium, which is characterized by a reduced ability to colonize the intestine, and by a very mild inflammatory response, was unable to successfully sustain competition with the microbiota