Estudi tècnic-econòmic de l'adaptació a la Llei de Benestar Animal d'una explotació porcina de la comarca d'Osona i posterior valoració de la seva implementació

Des de la publicació de la Llei de Benestar Animal RD 1135/ 2002, de 31 d’octubre que regula els tres aspectes clau de la producció porcina‐ sistemes d’estabulació i construccions permeses; formació obligatòria dels ramaders i maneig dels animals‐ totes les granges de nova construcció han estat projectades seguint els seus preceptes. Mentre que les granges existents han hagut d’adaptar‐hi les seves instal∙lacions sota amenaça de tancament si no es complien els requisits. L’objectiu d’aquest treball ha estat l’elaboració de l’estudi tècnic‐ econòmic per a l’adaptació a la Llei de Benestar Animal d’una explotació porcina de la comarca d’Osona. Després d’avaluar la situació inicial de les instal∙lacions, establir les línies de previsió de creixement i analitzar els avantatges i inconvenients de cada sistema i model, s’opta pel sistema d’alimentació electrònic model Nedap en grup dinàmic de truges sobre sòl amb jaç de palla. Una decisió no massa extesa en granges del sud d’Europa on se sol preferir l’slat de formigó i/o superfície pavimentada, però imprescindible perquè aquesta explotació pogués aconseguir una millor gestió de les dejeccions ramaderes i assegurar una millora agronòmica de les terres de conreu. El treball conclou amb el seguiment del desenvolupament de l’alternativa escollida i una valoració dels canvis derivats de l’adaptació al Benestar Animal després del primer any i mig en ús. Les millores obtingudes en termes de maneig, funcionament de la granja, salut dels animals i índex productius són remarcables. D’una banda, cal destacar el fet de tenir un nombre de coixeres molt menor respecte les granges amb superfície dura, així com la facilitat i rapidesa en els parts degut al benestar. De l’altra,la reducció del volum de purí, l’increment de la fracció sòlida i la disponibilitat de compost per al camp. Per això, no és exagerat observar el jaç amb palla com una de les solucions més adequades i equilibrades per aquesta explotació que combina boví, porcí i terra per a la producció de cultius.

Ecological and physiological variance in T-cell mediated immune response in Cory's shearwaters

T-cell mediated immune response (CMI) hasbeen widely studied in relation to individual andfitness components in birds. However, few studieshave simultaneously examined individual and socialfactors and habitat-mediated variance in theimmunity of chicks and adults from the samepopulation and in the same breeding season. Weinvestigated ecological and physiological variancein CMI of male and female nestlings and adults in abreeding population of Cory's Shearwaters(Calonectrisdiomedea) in theMediterranean Sea. Explanatory variables includedindividual traits (body condition, carbon andnitrogen stable isotope ratios, plasma totalproteins, triglycerides, uric acid, osmolarity,β-hydroxy-butyrate, erythrocyte meancorpuscular diameter, hematocrit, andhemoglobin) and burrow traits(temperature, isolation, and physicalstructure). During incubation, immune responseof adult males was significantly greater than thatof females. Nestlings exhibited a lower immuneresponse than adults. Ecological and physiologicalfactors affecting immune response differed betweenadults and nestlings. General linear models showedthat immune response in adult males was positivelyassociated with burrow isolation, suggesting thatmales breeding at higher densities suffer immunesystem suppression. In contrast, immune response inchicks was positively associated with bodycondition and plasma triglyceride levels.Therefore, adult immune response appears to beassociated with social stress, whereas a trade-offbetween immune function and fasting capability mayexist for nestlings. Our results, and those fromprevious studies, provide support for anasymmetrical influence of ecological andphysiological factors on the health of differentage and sex groups within a population, and for theimportance of simultaneously considering individualand population characteristics in intraspecificstudies of immune response.

Ecological and physiological variance in T-cell mediated immune response in Cory's shearwaters

T-cell mediated immune response (CMI) hasbeen widely studied in relation to individual andfitness components in birds. However, few studieshave simultaneously examined individual and socialfactors and habitat-mediated variance in theimmunity of chicks and adults from the samepopulation and in the same breeding season. Weinvestigated ecological and physiological variancein CMI of male and female nestlings and adults in abreeding population of Cory's Shearwaters(Calonectrisdiomedea) in theMediterranean Sea. Explanatory variables includedindividual traits (body condition, carbon andnitrogen stable isotope ratios, plasma totalproteins, triglycerides, uric acid, osmolarity,β-hydroxy-butyrate, erythrocyte meancorpuscular diameter, hematocrit, andhemoglobin) and burrow traits(temperature, isolation, and physicalstructure). During incubation, immune responseof adult males was significantly greater than thatof females. Nestlings exhibited a lower immuneresponse than adults. Ecological and physiologicalfactors affecting immune response differed betweenadults and nestlings. General linear models showedthat immune response in adult males was positivelyassociated with burrow isolation, suggesting thatmales breeding at higher densities suffer immunesystem suppression. In contrast, immune response inchicks was positively associated with bodycondition and plasma triglyceride levels.Therefore, adult immune response appears to beassociated with social stress, whereas a trade-offbetween immune function and fasting capability mayexist for nestlings. Our results, and those fromprevious studies, provide support for anasymmetrical influence of ecological andphysiological factors on the health of differentage and sex groups within a population, and for theimportance of simultaneously considering individualand population characteristics in intraspecificstudies of immune response.

¿Animales...?: 'No nada'. Reflexiones de ética animal

Article sobre l'ètica animal i la situació general a nivell espanyol

Intraregional trade in South America, 1913-50. Economic linkages before institutional agreements

Dejando de lado NAFTA, la integración comercial en América Latina sigue siendo muy moderada hoy en día, representando alrededor del 20% del comercio total. Lo sorprendente es que estos valores eran más altos en 1945. Esto constituye un hecho paradoxal: la integración comercial alcanzó su récord antes de la firma de acuerdos de integración comercial. En el presente trabajo se estudia el comercio intrarregional a lo largo del período de entreguerras (1913-1950) a través del análisis de cinco casos: Argentina, Bolivia, Brasil, Chile y Peru. El análisis de la integración comercial en este período representa una novedad en la literatura, ya que los trabajos sobre América Latina, específicos de comercio intraregional, se centran en el período a partir de la década de 1960. El documento destaca dos conclusiones principales: a) con la excepción de los períodos de las guerras mundiales, el comercio intraregional ha sido muy modesto desde 1913 hasta la actualidad, b) en general, el comercio intrarregional repitió la especialización del comercio mundial: una alta concentración en productos de bajo valor añadido.

Intraregional trade in South America, 1913-50. Economic linkages before institutional agreements

Dejando de lado NAFTA, la integración comercial en América Latina sigue siendo muy moderada hoy en día, representando alrededor del 20% del comercio total. Lo sorprendente es que estos valores eran más altos en 1945. Esto constituye un hecho paradoxal: la integración comercial alcanzó su récord antes de la firma de acuerdos de integración comercial. En el presente trabajo se estudia el comercio intrarregional a lo largo del período de entreguerras (1913-1950) a través del análisis de cinco casos: Argentina, Bolivia, Brasil, Chile y Peru. El análisis de la integración comercial en este período representa una novedad en la literatura, ya que los trabajos sobre América Latina, específicos de comercio intraregional, se centran en el período a partir de la década de 1960. El documento destaca dos conclusiones principales: a) con la excepción de los períodos de las guerras mundiales, el comercio intraregional ha sido muy modesto desde 1913 hasta la actualidad, b) en general, el comercio intrarregional repitió la especialización del comercio mundial: una alta concentración en productos de bajo valor añadido.

Risk-Return Trade-Off for European Stock Markets

This paper adopts dynamic factor models with macro-finance predictors to test the intertemporal risk-return relation for 13 European stock markets. We identify country specific, euro area, and global macro-finance factors to determine the conditional risk and return. Empirically, the risk- return trade-off is generally negative. However, a Markov switching model documents that there is time-variation in this trade-off that is linked to the state of the economy. Keywords: Risk-return trade-off; Dynamic factor model; Macro-finance predictors; European stock markets; Markov switching model JEL Classifications: C22; G11; G12; G17

The use of non-animal alternatives in the safety evaluations of cosmetics ingredients by the Scientific Committee on Consumer Safety (SCCS)

In Europe, the safety evaluation of cosmetics is based on the safety evaluation of each individual ingredient. Article 3 of the Cosmetics Regulation specifies that a cosmetic product made available on the market is to be safe for human health when used normally or under reasonably foreseeable conditions. For substances that cause some concern with respect to human health (e.g. colorants, preservatives, UV-filters), safety is evaluated at the Commission level by a scientific committee, presently called the Scientific Committee on Consumer Safety (SCCS). According to the Cosmetics Regulations, in the EU, the marketing of cosmetics products and their ingredients that have been tested on animals for most of their human health effects, including acute toxicity, is prohibited. Nevertheless, any study dating from before this prohibition took effect is accepted for the safety assessment of cosmetics ingredients. The in vitro methods reported in the dossiers summited to the SCCS are here evaluated from the published reports issued by the scientific committee of the Directorate General of Health and Consumers (DG SANCO); responsible for the safety of cosmetics ingredients. The number of studies submitted to the SCCS that do not involve animals is still low and in general the safety of cosmetics ingredients is based on in vivo studies performed before the prohibition.

Successful therapies for Alzheimer's disease: why so many in animal models and none in humans?

Peering into the field of Alzheimer's disease (AD), the outsider realizes that many of the therapeutic strategies tested (in animal models) have been successful. One also may notice that there is a deficit in translational research, i.e., to take a successful drug in mice and translate it to the patient. Efforts are still focused on novel projects to expand the therapeutic arsenal to 'cure mice.' Scientific reasons behind so many successful strategies are not obvious. This article aims to review the current approaches to combat AD and to open a debate on common mechanisms of cognitive enhancement and neuroprotection. In short, either the rodent models are not good and should be discontinued, or we should extract the most useful information from those models. An example of a question that may be debated for the advancement in AD therapy is: In addition to reducing amyloid and tau pathologies, would it be necessary to boost synaptic strength and cognition? The debate could provide clues to turn around the current negative output in generating effective drugs for patients. Furthermore, discovery of biomarkers in human body fluids, and a clear distinction between cognitive enhancers and disease modifying strategies, should be instrumental for advancing in anti-AD drug discovery.

Environmental determinants of foraging strategies in Cory"s shearwaters Calonectris diomedea

Despite the advent of devices to track seabird movements, the extent to which productive areas and oceanic winds influence foraging strategies is still not fully understood. We investigated the main environmental determinants of foraging strategies in Cory"s shearwaters Calonectris diomedea by combining satellite-tracking information from 14 birds breeding on the Canary Islands with concurrent data on chlorophyll a (chl a) concentrations and oceanic winds. Additionally, we took blood samples at the end of each foraging trip and analysed carbon (C) and nitrogen (N) stable isotopes to examine the use of trophic resources. All birds showed commuting trips, concentrating foraging activity exclusively on the African continental shelf. Foraging locations showed a strong association with chl a concentrations, suggesting birds select foraging areas according to prey availability. In contrast with other breeding colonies where Cory"s shearwaters use a dual-foraging method, birds showed a unimodal strategy and did not show differences in C and N isotope signatures in plasma, confirming that close proximity to highly productive areas strongly influences foraging strategies. In addition, birds tracked during 2 consecutive trips foraged in the same area, suggesting that high resource availability promotes fidelity to feeding grounds also at coarse scales. Persistent northeast trade winds blew during the study period, and commuting trips followed a consistent clockwise movement with a southwest heading while the birds foraged along the continental shelf, suggesting that birds used tail winds to reduce their flying costs. Our results corroborate that oceanographic conditions in the vicinity of the breeding colony have a strong effect on foraging strategies of pelagic seabirds.

The impact of FTAs on MENA trade in agricultural and industrial products

This paper analyses the impact of Free Trade Agreements (FTAs) on Middle East and North African Countries (MENA) trade for the period 1994-2010. The analysis distinguishes between industrial and agricultural trade to take into account the different liberalisation schedules. An augmented gravity model is estimated using up-to-date panel data techniques to control for all time-invariant bilateral factors that influence bilateral trade as well as for the so-called multilateral resistance factors. We also control for the endogeneity of the agreements and test for self-selection bias due to the presence of zero trade in our sample. The main findings indicate that North-South-FTAs and South-South- FTAs have a differential impact in terms of increasing trade in MENA countries, with the former being more beneficial in terms of exports for MENA countries, but both showing greater global market integration. We also find that FTAs that include agricultural products, in which MENA countries have a clear comparative advantage, have more favourable effects for these countries than those only including industrial products. JEL code: F10, F15

Animal sound : què se sent quan s’és una cabra?

Aquest projecte treballa sobre la possibilitat d'aplicar tècniques d'enregistrament binaural en animals, en concret, en una cabra domèstica. Mitjançant uns micròfons col·locats dins les seves orelles i una petita càmera de vídeo muntada sobre el seu cap, s'obté un material audiovisual que permet fer-se una idea aproximada de com és la seva percepció del món. En base a un estudi de cognició comparada, es pretén trobar maneres de transformar els enregistraments obtinguts per tal d'adaptar el marc psicoacústic humà al de l'animal. L'objectiu és que una persona pugui sentir com ho fa un animal, encara que sigui d'una manera aproximada. Els materials obtinguts al llarg dels enregistraments són el punt de partida per a la construcció de paisatges sonors i peces audiovisuals diverses. Així doncs, el treball s'inicia amb el disseny i construcció d'un micròfon binaural, continua amb enregistraments de camp en animals i acaba amb l'edició, el processat i la composició dels paisatges sonors finals.