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El objetivo de este trabajo fue el de valorar la respuesta a la suplementación enzimática de la dieta con distintos enzimas microbianos en lechones en fase de transición.

La importancia de los aditivos alimentarios en producción animal, tanto por sus efectos estimulantes en la productividad de los animales, como por sus posibles efectos concomitantes, de tipo patológico, ya en los propios animales ya en el hombre, consumidor de sus productos, ha suscitado una considerable polémica en el mundo entero. La importancia de algunos de sus efectos secundarios, en el caso de determinados aditivos, así como la extrema sensibilidad del consumidor, ha determinado que el potencial estimulante de muchos de estos aditivos, o posibles aditivos, quede supeditado a la inequívoca demostración de la inocuidad de sus residuos para el hombre, consumidor de sus productos.

This document is the second and final iteration of the deliverable and describes the basictechnical infrastructure of the ImAc platform, including production modules, delivery andend-user equipment, based on the results of WP2’s user centred design and resulting requirements of tasks T2.1 and T2.2.

The classical Rotational Isomeric State (RIS) model, originally proposed by Flory, has been used to rationalize a wide range of physicochemical properties of neutral polymers. However, many weak polyelectrolytes of interest are able to regulate their charge depending on the conformational state of the bonds. Recently, it has been shown that the RIS model can be coupled with the Site Binding (SB) model, for which the ionizable sites can adopt two states: protonated or deprotonated. The resulting combined scheme, the SBRIS model, allows for analyzing ionization and conformational equilibria on the same foot. In the present work, this approach is extended to include pH-dependent electrostatic Long-Range (LR) interactions, ubiquitous in weak polyelectrolytes at moderate and low ionic strengths. With this aim, the original LR interactions are taken into account by defining effective Short-Range (SR) and pH-dependent parameters, such as effective microscopic protonation constants and rotational bond energies. The new parameters are systematically calculated using variational methods. The machinery of statistical mechanics for SR interactions, including the powerful and fast transfer matrix methods, can then be applied. The resulting technique, which we will refer to as the Local Effective Interaction Parameters (LEIP) method, is illustrated with a minimal model of a flexible linear polyelectrolyte containing only one type of rotating bond. LEIP reproduces very well the pH dependence of the degree of protonation and bond probabilities obtained by semi-grand canonical Monte Carlo simulations, where LR interactions are explicitly taken into account. The reduction in the computational time in several orders of magnitude suggests that the LEIP technique could be useful in a range of areas involving linear weak polyelectrolytes, allowing direct fitting of the relevant physical parameters to the experimental quantities.

El segment de la micropime és el més nombrós a les economies catalana, espanyola i europea, però habitualment s’analitza en conjunt i englobat amb el de la PIME. En aquest estudi analitzarem quina és l’aportació del sector de la micropime a l’economia catalana, espanyola i europea en general. I, en particular, en el cas de la micropime catalana, en quins elements competitius basa el seu desenvolupament, les principals problemàtiques que afronta i quines són les àrees més importants de recolzament per tal d’afavorir no només la supervivència sinó també i, sobretot, la consolidació d’aquestes iniciatives empresarials.