[Swine dysentery eradication in a grower-finisher farm in Switzerland];Die Sanierung der Schweinedysenterie in einem Schweizer Aufzucht-Mastbetrieb

On a Swiss grower-finisher farm blood-tinged-diarrhoea in pigs weighing 40 to 60 kg was observed during several months, resulting in reduced feed efficiency and a prolonged fattening period. As part of a research project, in February 2007 faecal samples were analysed and one diseased pig was euthanised and sent for necropsy where typical gut lesions indicative for a Brachyspira (B.) hyodysenteriae infection were found. B. hyodysenteriae was demonstrated by PCR in 4 out of 5 faecal samples. The pig farm thereafter underwent an eradication process with timed depopulation of the consecutive pigpens. During February to June 2008 the farm was regularly inspected and tested for B. hyodysenterieae. Testing continued for another year after the eradication process and all faecal samples proved negative. Until January 2010 neither diarrhoea with blood nor B. hyodysenterieae reoccurred.

[Medicine of yore in the Moesano]

Through a series of walks with former colleagues and investigations in archives the author succeeded in reconstructing the medical past of the Moesano, a remote region of the italian speaking Grisons comprising the valleys of Calanca and Mesolcina. His analysis illustrates and reviews the demographic movements in a district of which certain parts are on the way of depopulation, the medical practitioners who followed one another during the last century, their daily activities under circumstances totally different from ours, the means at their disposal in particular the therapeutical possibilities an overview of the popular medicines of that time and a short historical report about the health resort of San Bernardino.

Economic efficiency analysis of different strategies to control post-weaning multi-systemic wasting syndrome and porcine circovirus type 2 subclinical infection in 3-weekly batch system farms.

The study assessed the economic efficiency of different strategies for the control of post-weaning multi-systemic wasting syndrome (PMWS) and porcine circovirus type 2 subclinical infection (PCV2SI), which have a major economic impact on the pig farming industry worldwide. The control strategies investigated consisted on the combination of up to 5 different control measures. The control measures considered were: (1) PCV2 vaccination of piglets (vac); (2) ensuring age adjusted diet for growers (diets); (3) reduction of stocking density (stock); (4) improvement of biosecurity measures (bios); and (5) total depopulation and repopulation of the farm for the elimination of other major pathogens (DPRP). A model was developed to simulate 5 years production of a pig farm with a 3-weekly batch system and with 100 sows. A PMWS/PCV2SI disease and economic model, based on PMWS severity scores, was linked to the production model in order to assess disease losses. This PMWS severity scores depends on the combination post-weaning mortality, PMWS morbidity in younger pigs and proportion of PCV2 infected pigs observed on farms. The economic analysis investigated eleven different farm scenarios, depending on the number of risk factors present before the intervention. For each strategy, an investment appraisal assessed the extra costs and benefits of reducing a given PMWS severity score to the average score of a slightly affected farm. The net present value obtained for each strategy was then multiplied by the corresponding probability of success to obtain an expected value. A stochastic simulation was performed to account for uncertainty and variability. For moderately affected farms PCV2 vaccination alone was the most cost-efficient strategy, but for highly affected farms it was either PCV2 vaccination alone or in combination with biosecurity measures, with the marginal profitability between 'vac' and 'vac+bios' being small. Other strategies such as 'diets', 'vac+diets' and 'bios+diets' were frequently identified as the second or third best strategy. The mean expected values of the best strategy for a moderately and a highly affected farm were £14,739 and £57,648 after 5 years, respectively. This is the first study to compare economic efficiency of control strategies for PMWS and PCV2SI. The results demonstrate the economic value of PCV2 vaccination, and highlight that on highly affected farms biosecurity measures are required to achieve optimal profitability. The model developed has potential as a farm-level decision support tool for the control of this economically important syndrome.

AUGMENTATION OF RECONSTITUTION OF GUT ASSOCIATED LYMPHOID TISSUE IN THE SYNGENEIC MURINE BONE MARROW TRANSPLANTATION MODEL

Gut was studied as a prototypical mucosal membrane in the murine BDF-1 syngeneic bone marrow transplant model. Measures of jejunal intraepithelial lymphocytes (IELs) and crypt cells were obtained by standard techniques and a method of quantifying gut lamina propria plasma cells (PCs) was developed. The degree of ablation of gut PCs and IELs after 900 rads total body irradiation with ('60)Co, and their repopulation effected by transplantation with 2.0 x 10('5) or 1.0 x 10('6) bone marrow cells demonstrated a prolonged period of profound depression in population levels of these cells which was not reflected by the extent of damage sustained to the epithelium. Differences in the depopulation and recovery of gut PCs and IELs revealed a tendency towards initial differentiation of effector cells. A positive dose response to high bone marrow cell innocula was obtained. Subsequent studies determined that gut IEL and PC repopulation was potentiated by the addition of IELs or buffy coat cells (BCs) to the bone marrow transplant. A method of isolating 1.4 - 4.0 x 10('7) viable IELs per gram of murine small bowel was devised employing intralumenal hyaluronidase digestion of the epithelial layer and centrifugation of the resulting suspension through discontinuous Percoll gradients. Irradiated mice received 2.0 x 10('5) bone marrow cells along with an equal number of IELs or BCs. The extent and duration of depression of numbers of IELs and PCs was markedly reduced by the addition of the IEL isolate to the transplantation innocula, and to a lesser degree by the addition of BCs. The augmentation of repopuation far exceeded that expected by simple lodging of cells suggesting that the additionally transplanted cells contained a subpopulation of mucosal membrane lymphoid stem cells or helper cells. Correlation analysis of PC versus IEL levels suggests a possible feedback mechanism governing the relative size of their populations. Normal ratios of IgA, IgM, and IgG bearing PCs was maintained post transplantation with all of the regimens. ^

O rural depois do êxodo : As implicações do despovoamento dos campos no distrito de Arroio do Só, município de Santa Maria/RS, Brasil

This study aims to understand the sociospatial transformations resulting from the depopulation of the fields and their effects on the rural landscape of Arroio do Só in Santa Maria - RS. To this end, we attempted to identify changes in the way of life of rural people, their activities and relationships and understand how this process has occurred, its causes and its impact on quality of life and social structure of the population that remained in place. The discussion on the modernization of agriculture is key to understanding this process. This district was chosen as a research site because it is a town that, in the past, had a very big socioeconomic dynamism, and now, according to the bankruptcy of several companies and the consequent emigration of much of the population, the sociospatial dynamic has changed. It was collected data from a secondary source of FIBGE and FEE in order to periodize population dynamics of the district, county and state. The qualitative research was conducted through interviews with the subjects in the field and their representatives, with the help of the Field Diary

Minería metalífera en Santa Cruz : Empleo y matriz productiva

El presente estudio se propone realizar una caracterización de la minería metalífera en la Provincia de Santa Cruz. Esta actividad comenzó a desarrollarse en esa provincia desde mediados de los años 90 y, hasta la fecha, creció en forma sostenida como consecuencia del cruce de una serie de circunstancias favorables: a) las modificaciones en la legislación, que favorecieron la inversión minera al equiparar en oportunidades a la República Argentina con Chile y el Perú, países con un elevado desarrollo minero gracias a la importante inversión externa directa; b) el potencial minero de la provincia; c) la crisis en el sector lanero -especialmente en la meseta central de la provincia- que llevó a un despoblamiento de los campos de actual explotación minera, lo que redujo la potencial conflictividad entre la minería y la ganadería y facilitó a la nueva actividad la adquisición de propiedades a bajos precios, presentándola, además, como un sector generador de empleo; d) la lejanía de los yacimientos mineros de los centros poblados de la provincia, que favoreció un consenso social superior al verificado en otras regiones del país. En la actualidad, en un contexto de aumento generalizado de los precios internacionales de las commodities, se observa un constante incremento de la actividad minera en la Provincia de Santa Cruz. Ello ha conducido a la incorporación de nuevas tecnologías de producción para la recuperación mineral y a dar impulso a nuevas explotaciones

O rural depois do êxodo : As implicações do despovoamento dos campos no distrito de Arroio do Só, município de Santa Maria/RS, Brasil

This study aims to understand the sociospatial transformations resulting from the depopulation of the fields and their effects on the rural landscape of Arroio do Só in Santa Maria - RS. To this end, we attempted to identify changes in the way of life of rural people, their activities and relationships and understand how this process has occurred, its causes and its impact on quality of life and social structure of the population that remained in place. The discussion on the modernization of agriculture is key to understanding this process. This district was chosen as a research site because it is a town that, in the past, had a very big socioeconomic dynamism, and now, according to the bankruptcy of several companies and the consequent emigration of much of the population, the sociospatial dynamic has changed. It was collected data from a secondary source of FIBGE and FEE in order to periodize population dynamics of the district, county and state. The qualitative research was conducted through interviews with the subjects in the field and their representatives, with the help of the Field Diary

Minería metalífera en Santa Cruz : Empleo y matriz productiva

El presente estudio se propone realizar una caracterización de la minería metalífera en la Provincia de Santa Cruz. Esta actividad comenzó a desarrollarse en esa provincia desde mediados de los años 90 y, hasta la fecha, creció en forma sostenida como consecuencia del cruce de una serie de circunstancias favorables: a) las modificaciones en la legislación, que favorecieron la inversión minera al equiparar en oportunidades a la República Argentina con Chile y el Perú, países con un elevado desarrollo minero gracias a la importante inversión externa directa; b) el potencial minero de la provincia; c) la crisis en el sector lanero -especialmente en la meseta central de la provincia- que llevó a un despoblamiento de los campos de actual explotación minera, lo que redujo la potencial conflictividad entre la minería y la ganadería y facilitó a la nueva actividad la adquisición de propiedades a bajos precios, presentándola, además, como un sector generador de empleo; d) la lejanía de los yacimientos mineros de los centros poblados de la provincia, que favoreció un consenso social superior al verificado en otras regiones del país. En la actualidad, en un contexto de aumento generalizado de los precios internacionales de las commodities, se observa un constante incremento de la actividad minera en la Provincia de Santa Cruz. Ello ha conducido a la incorporación de nuevas tecnologías de producción para la recuperación mineral y a dar impulso a nuevas explotaciones

Minería metalífera en Santa Cruz : Empleo y matriz productiva

El presente estudio se propone realizar una caracterización de la minería metalífera en la Provincia de Santa Cruz. Esta actividad comenzó a desarrollarse en esa provincia desde mediados de los años 90 y, hasta la fecha, creció en forma sostenida como consecuencia del cruce de una serie de circunstancias favorables: a) las modificaciones en la legislación, que favorecieron la inversión minera al equiparar en oportunidades a la República Argentina con Chile y el Perú, países con un elevado desarrollo minero gracias a la importante inversión externa directa; b) el potencial minero de la provincia; c) la crisis en el sector lanero -especialmente en la meseta central de la provincia- que llevó a un despoblamiento de los campos de actual explotación minera, lo que redujo la potencial conflictividad entre la minería y la ganadería y facilitó a la nueva actividad la adquisición de propiedades a bajos precios, presentándola, además, como un sector generador de empleo; d) la lejanía de los yacimientos mineros de los centros poblados de la provincia, que favoreció un consenso social superior al verificado en otras regiones del país. En la actualidad, en un contexto de aumento generalizado de los precios internacionales de las commodities, se observa un constante incremento de la actividad minera en la Provincia de Santa Cruz. Ello ha conducido a la incorporación de nuevas tecnologías de producción para la recuperación mineral y a dar impulso a nuevas explotaciones

O rural depois do êxodo : As implicações do despovoamento dos campos no distrito de Arroio do Só, município de Santa Maria/RS, Brasil

This study aims to understand the sociospatial transformations resulting from the depopulation of the fields and their effects on the rural landscape of Arroio do Só in Santa Maria - RS. To this end, we attempted to identify changes in the way of life of rural people, their activities and relationships and understand how this process has occurred, its causes and its impact on quality of life and social structure of the population that remained in place. The discussion on the modernization of agriculture is key to understanding this process. This district was chosen as a research site because it is a town that, in the past, had a very big socioeconomic dynamism, and now, according to the bankruptcy of several companies and the consequent emigration of much of the population, the sociospatial dynamic has changed. It was collected data from a secondary source of FIBGE and FEE in order to periodize population dynamics of the district, county and state. The qualitative research was conducted through interviews with the subjects in the field and their representatives, with the help of the Field Diary

Linking land cover changes in the subalpine and montane belts to changes in a torrential river.

Channel cbanges are the consequence of cbanges in sediment yield from the slopes and in the connectivity between slopes and channels bccause of distinct land use and climate inJpacts. In Ibis study, we investigated the characteristics and evolution of a short reach in the headwater of the !juez River, central-soutbem Pyrenees. Assessment of a series of sedimentar)' and geomorphic structures confirtned major cbanges to the valley boUom, mainly related to changes in the intensity of human activity. 'The oldest sedimentar)' structure is a terrace leve! located 3 10 4 m above the current alluvial plain. General deforestation, overgrazing and recwring tires in the montane belt ( 1100-1600 m a.sJ.) have led 10 increased soil erosioo and connectivity, and to tbe triggering of debris llows thal have been deposited on the fluvial tmace. Woody fragments from within the debris llows were dated using acceleraror mass spectrOmetry '"e radiocaroon tcchniques (AMS), yielding ages between 1 00 and 115 cal years BP, whicb coincides with tbe period of maximum deforestalion and human density in the Pyrenees. Depopulation and fannland abaodonment since tbe beginning of tbe 2001 oenrury has resulled in generalliJcod natural and artificial reforestation, a shrinkage of the eroded arcas aod a decline in connectivi¡y bdween slopes and the channel. 1be rnost impor1an1 consequence has been cbannel incision and oarrowing, and the development of a sedimed annour !ayer. Active sedimenl b8llSpOI1 is continui.Qg, although there has been a decrease in sed.iment yield from the slopes. Copyright O 2014 John Wiley & Soos, Ltd.

A Porposal: "Agro-ERASMUS"

The rural population is getting smaller as percentage of the total population in the countries. There is a constant depopulation of rural areas to urban areas. The most extreme data are in countries like USA, where the rural population is 1.5%, from which 1% of that amount is part time and only 0.5% full time. On the other side, we have countries with more than 50% rural population. Related to training, cultural development, business and specific weight in society, rural residents have no significance in their societies. As they are few, and separated across the territory they have no influence on their societies. Comparing the USA farmer with one from the EU, we see that the American one is a businessperson and the European one, in most cases is a farm worker. To reduce this gap between these different farmers, we believe that we must train the new generations of children belonging to farming Europe. They must have a common language, English; they must know other countries culture and farming systems, live and network with other young Europeans colleagues,future young farmers. It is what we have coined as AGRO-ERASMUS. A project to be placed within the EU Common Agriculture Policies. The project must be designed before its implementation. Even some previous experience should make better viability. It should make use of a network of agricultural universities in several European countries. Each university would build a "farm school" where young people would learn "English?, and visit and work in small agricultural practices with a correct use of the time. One important subject dealing with should be agribusiness. The procedure based on the ?Farm School? (F-S) experience, should start with young people from 13 years up to 18 years. Their attendance, every summer, to the F-S should be rotated between different countries besides their own. The first and second year, with young people 13/14 years old, the Farm School would last less than three weeks in an English speaking country (Ireland, UK or someone else). They should live with a local family the time they stay outside of the Farm School (F-S). This two years period must be devoted to learn and become familiar with the English language and cultural differences. The rest of the four years left, the Farm Schools will have longer duration and be placed in other countries from the network. The living way would be in multinational teams of young people where the only spoken language would be English. After six years of summer oexistence speaking English and learning new competences and skills with colleagues from other countries, we would have a great team of young and future European farmers, able to travel free and confident through the whole Europe and ready to be engaged in productive, commercial and research activities. These new young farmers may revive European agriculture and would not look any more like rural habitants, but international business-farmers, professionally speaking. In a brief survey among the assistants to the Fifth International Academic Conference titled "Alternative Income Sources in Small Agricultural Holdings of the European Union" held in Krakow (PL) in June 2015, participants from universities and countries like Poland, Hungary, Rep. Czech, Portugal, Romania, etc., expressed the necessity of addressing this problem in a new and bold way.

La ruralidad del 15-M. Iniciativas desde el movimiento agroecológico alicantino

La principal imagen del movimiento 15-M viene simbolizada por las acampadas en las plazas de numerosas ciudades españolas, es decir, su apariencia urbana. No obstante, el derecho a la alimentación sana, el consumo responsable, el acceso a la tierra, la conservación de ecosistemas agrarios y la despoblación del medio rural han sido algunas de las temáticas debatidas en el seno del movimiento. Ello demuestra una sustancial preocupación por la cuestión tanto ambiental como agraria, para las cuales se reclaman alternativas desde una perspectiva propiamente rural. Como se pretende hacer ver en este artículo, en el seno del movimiento 15-M las cuestiones urbanas y rurales son indisociables. Entre ellas destaca la reivindicación de la soberanía alimentaria y de la agroecología como horizontes de una transformación en la organización del territorio. En este artículo se sintetizan los aspectos de ruralidad del movimiento 15-M y sus reivindicaciones de carácter social, ambiental y territorial. De manera particular, se consideran las características propias de iniciativas incipientes que se están llevando a cabo en la provincia de Alicante, en el sureste del Estado español, así como de sus interrelaciones con movimientos rurales en el ámbito regional, nacional e internacional.

Pervivencia o “supervivencia” de la tradición en el Guadarrama segoviano. Procesos y prácticas

El aprovechamiento ganadero es el factor dominante de la organización del espacio en el Guadarrama segoviano. Si bien, desde el decenio de 1950, la actividad pecuaria empieza a entrar en un declive prolongado, reduciéndose el número de explotaciones y la cuantía de cabezas de ganado. Un abandono de las prácticas pastoriles que se evidencia, igualmente, en la inexorable tendencia hacia la simplificación en el manejo de los animales y la utilización selectiva del suelo. Sucede, de este modo, la crisis del sistema tradicional y del modelo territorial en el que este se apoyaba, progresivamente sustituido por una organización geográfica de corte tradicional-degradado. Es, en definitiva, lo que se ha convenido en titular como la “supervivencia” de la tradición. Y cuyo correlato se encuentra en el prolongado proceso de despoblación acontecido desde entonces, como las sensibles mermas de población registradas, las perceptibles modificaciones habidas en el tamaño y número de asentamientos o el excesivo grado de envejecimiento terminan por demostrar. Una “supervivencia” completamente supeditada, de este modo, al agotamiento social.

Avaliação da implementação dos Projetos Agris 3.4 : Preveção de riscos provocados por agentes bióticos nos concelhos de Castelo Branco e Idanha-a-Nova

Dissertação apresentada à Escola Superior Agrária do Instituto Politécnico de Castelo Branco para cumprimento dos requisitos necessários à obtenção do grau de Mestre em Tecnologias e Sustentabilidade dos Sistemas Florestais.