93 research outputs found

    Effect of different processing methods on the nutritional characteristics and tannin content of fababean seed (Vicia faba minor)

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    In the last years, because of their high protein content, the demand of legume seeds is significantly increased. In the centre and southern Italy fababean (Vicia faba minor) can play an important role as alternative protein source in ruminant nutrition. In this trial has been studied the effect of different treatments (flaking, cooking, dehulling, germination) on the in vitro digestibility and tannin content of fababean seeds. The in vitro OM and NDF digestibility of seeds were significantly (P<0.05) improved by dehulling and flaking. The in vitro OM digestibility of dehulled fababean (99.27%) showed higher values (P<0.05) than the other treated seeds as well as in vitro NDF digestibility (90.33%, P<0.05). Germination of fababean reduces the in vitro digestibility of OM and NDF. Cooking in water was more effective in reducing tannins than other treatments. Compared to the untreated the cooked has significantly (P<0.05) reduced the tannin content over 55% (2.71 g/kgDM vs. 6.10 g/kgDM). Germinated fababean did not affect the tannin content of seeds. The results from this trial suggest that thermal treatments applied to fababean seeds in order to reduce the tannins must be evaluated according to the cost/benefits ratio because this factors in seeds is low (<10 g/kgDM)

    Effect of different breed on Ragusano cheese quality

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    Specific objectives: Ragusano PDO cheese is a traditional dairy product of Sicily, the aim of the study was to characterised parameters of milk and Ragusano PDO cheese in different breeds. Experimental methods: The research was carried out in two farms in province of Ragusa, samples of Bruna (BR) and Modicana (MD) milk were taken during winter and stored prior to analysis. Chemical composition (dry matter, fat, protein, ash, casein, NNC) and lactodinamographic parameters of milk were determined. Ragusano PDO cheese was obtained after ripening period (four months) and chemical analysis (dry matter, ash, ether extract, crude protein) were carried out. Statistical analysis. Chemical and technological parameters of milk, chemical composition of cheese were examined by one-way ANOVA. When significant effects were found (P≤0.05), differences were determined using t-student. Data analyses were performed using JMP software of SAS (SAS Instit., NC, USA). Results and conclusions: The moisture of milk was higher in BR than MD (87.19% vs. 86.20%), although the ash content was greater in MD (0.82% vs. 0.76%). Crude fat showed a higher result in BR as the casein content (3.61% vs. 3.12%) and the casein/crude protein ratio (85.01% vs. 80.86%). Non-casein nitrogen was higher for MD than BR (0.74% vs. 0.64%), while crude protein didn't show differences between the breeds. The technological parameters of milk showed differences for k20 and a30 parameters. The rennet clotting time (r) didn't show significant difference for the breeds (13:30 min vs. 15:15 min). Curd firmness (k20) evidenced a longer period for BR than MD (06:15 min vs. 02:55 min), although final curd firmness 30 min after rennet addition (a30) was found higher in MD (28.96 mm vs. 21.74 mm). The chemical composition of cheese showed differences in dry matter and ash content. BR showed higher moisture level than MD (34.09 % vs. 32.59 %) while the ash level were higher in MD breed (5.95 % vs. 5.28 %). The difference of dry matter and ash level of the breeds can be assessed to the effect of seasoning, instead no correlation were found for protein and fat. It's know how MD has lower productive performance than BR, although in this trial the quality parameters of milk and cheese of autochthonous breed, as Modicana, is comparable with Bruna. Moreover samples of cheese didn't show differences for fat and protein content; for these reasons MD seems to be more carefully to be chosen for the production of Ragusano PDO cheese.chosen for the production of Ragusano PDO cheese

    preliminary research on environmental impact of woodland grazing by pigs

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    6 castrate pigs about 30 kg live weight each entered in a fence into hilly woodland area. The pigs were bred until about 140 kg live weight. After 10 months of pasture breeding, the environmental damages (cover ground, plants and soil characteristics) by rooting and trampling were evaluated. The damages to cover ground and to shrubs and to physical structure (Fissures and Aggregate stability) caused hydro-geological instability with soil erosion and landslides. Removing surface layers of soil caused considerable loss of organic matter (Total Organic Carbon and Total Nitrogen), microbial activity (Microbial ATP and breathing) and enzyme activity changes (Total β−glucosidase and Extra cellular β−glucosidase). Damages to native plants are different in relation to the root and the trunk kinds, and to the palatability of leaves and apexes which result inversely related whit the abundance of disagreeable substances content (ADL, Tannins, Resins, Latex)

    Environmental impact caused by wild ungulates in protected areas

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    Protected areas play a crucial role for conservation of natural habilats and ecosystems. Protecting biodiversity means maintaining in good condition ecological processes in order to ensure a good state of harmony between natural resources and environmental conservation. It is known that one of the major threats of the Conservation is the presence of alien or invasive species, especial/y if they are introduced in protected areas. The International Union for Conservation of Nature (IUCN) writes in the list of the 100 invasive species the wild boar (Sus scrofa L.) and the goat (Capra hircus L.). These ungulates represent a serious threat for natural ecosystems because they are able to alter natural habilats reducing biodiversity. The primary aim of this study is to evaluate some aspects connected with environmental relationships mainly between flora and fauna in protected areas, focusing on wild boars and feral goats. Secondly, it is analysed "Human dimension" aspect caused by presence and damage of wild animals finked to damage to crops and to dry stone wall supporting the typical cultivated terraces. To reach our goal we use as a case study the Portofino Natural Park in North-West Italy, because it houses one of the largest biodiversity concentration in the Mediterranean area. In this protected area the wild boar is the most invasive between the two studied animai species, because of soil damages that influence hydro-geological balance of territory. Finally, this species can quickly increase its population for the high prolificacy and low biological and predator mortality

    Assessment of overgrazing on degradation of sloping soil

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    Overgrazing, particularly on slopes, can cause significant alterations in soil quality, determining a greater vulnerability to soil erosion. The aim of this work was to assess the influence of horse overgrazing on sloping (20%) soil properties. Chemical and biochemical parameters have been determined in order to evaluate soil quality. A significant decrease in nutrients was observed after one year. The trend of enzyme activities highlighted a reduction of metabolic processes. However, after one year of resting land, an improvement of soil quality could be noticed by the restoration of the initial level of enzymatic activities

    Last improvements in the data assimilation scheme for the Mediterranean Analysis and Forecast system of the Copernicus Marine Service

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    The Mediterranean Forecasting System (MFS) is a numerical ocean prediction system that produces analyses, reanalyses and short term forecasts for the entire Mediterranean Sea and its Atlantic Ocean adjacent areas. The system is now part of the Copernicus Marine Environment Monitoring Service (CMEMS) providing regular and systematic information about the physical state and dynamics of the Mediterranean Sea through the Med-MFC (Mediterranean Monitoring and Forecasting Center). MFS has been implemented in the Mediterranean Sea with 1/16o horizontal resolution and 72 vertical levels and is composed by the hydrodynamic model NEMO (Nucleus for European Modelling of the Ocean) 2-way online coupled with the third generation wave model WaveWatchIII (Clementi et al., 2017a) and forced by ECMWF atmospheric fields at 1/8° horizontal resolution. The model solutions are corrected by the data assimilation system (3D variational scheme, Dobricic and Pinardi, 2008) with a daily assimilation cycle of along track satellite Sea Level Anomaly (SLA) and vertical profiles of Temperature and Salinity from ARGO and gliders. In this study we present a new estimate of the background error covariance matrix with vertical Empirical Orthogonal Functions (EOFs) that are defined at each grid point of the model domain in order to better account for the error covariance between temperature and salinity in the shelf and open ocean areas. Moreover the Observational error covariance matrix is z-dependent and varies in each month. This new dataset has been tested and validated for more than 2 years against a background error correlation matrix varying only seasonally and in thirteen sub-regions of the Mediterranean Sea (Dobricic et al. 2005).PublishedBergen, Norway3SR. AMBIENTE - Servizi e ricerca per la Societ

    Last improvements in the data assimilation scheme for the Mediterranean Analysis and Forecast system of the Copernicus Marine Service

    Get PDF
    The Mediterranean Forecasting System (MFS) is a numerical ocean prediction system that produces analyses, reanalyses and short term forecasts for the entire Mediterranean Sea and its Atlantic Ocean adjacent areas. The system is now part of the Copernicus Marine Environment Monitoring Service (CMEMS) providing regular and systematic information about the physical state and dynamics of the Mediterranean Sea through the Med-MFC (Mediterranean Monitoring and Forecasting Center). MFS has been implemented in the Mediterranean Sea with 1/16o horizontal resolution and 72 vertical levels and is composed by the hydrodynamic model NEMO (Nucleus for European Modelling of the Ocean) 2-way online coupled with the third generation wave model WW3 (WaveWatchIII) and forced by ECMWF atmospheric fields at 1/8o horizontal resolution. The model solutions are corrected by the data assimilation system (3D variational-3Dvar scheme adapted to the oceanic assimilation problem, Dobricic and Pinardi, 2008) with a daily assimilation cycle of satellite Sea Level Anomaly (SLA) and vertical profiles of Temperature and Salinity. In this study we present a new estimate the of the background error covariance matrix with vertical Empirical Orthogonal Functions (EOFs) that are defined at each grid point of the model domain in order to better account for the error covariance between temperature and salinity in the shelf and open ocean areas. Moreover the Error covariance matrix is z-dependent and varies in each month. This new dataset has been tested and validated for more than 2 years against a background error correlation matrix varying only seasonally and in thirteen sub-regions of the Mediterranean Sea. Latest developments include the implementation of an upgraded 3Dvar (Storto et al. 2012) for a high-resolution model, 1/24o in the horizontal and 141 vertical levelsPublishedBergen, Norway3SR. AMBIENTE - Servizi e ricerca per la Societ

    The Mediterranean analysis and forecasting physical system for the Copernicus Marine Service: description and skill assessment

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    The Mediterranean Analysis and Forecasting System is a numerical ocean prediction system that operationally produces analyses and 10 days forecasts of the main physical parameters for the entire Mediterranean Sea and its Atlantic Ocean adjacent areas. The system is composed by the hydrodynamic model NEMO (Nucleus for European Modelling of the Ocean) 2-way coupled with the third-generation wave model WW3 (WaveWatchIII) and forced by ECMWF (European Centre for Medium-range Weather Forecasts) atmospheric fields. The forecast initial conditions are produced by a 3D variational data assimilation system which considers a daily assimilation cycle of Sea Level Anomaly, vertical profiles of Temperature and Salinity from ARGO and ship CTDs and heat flux corrections with satellite SST. The system has been recently upgraded in the framework of the Copernicus Marine Environment Monitoring Service (CMEMS) by increasing the grid resolution from 1/16 to 1/24 degree in the horizontal, thus becoming fully mesoscale resolving and from 72 to 141 vertical levels, by increasing the number of fresh water river inputs and by updating the data assimilation scheme. The model has a non-linear explicit free surface and the forecast is forced by surface pressure, interactive heat, momentum and water fluxes at the air-sea interface. The focus of this work is to present the latest modeling system upgrades and the related improvements achieved by showing the model skill assessment including comparison with independent (insitu coastal moorings) and quasi-independent (insitu vertical profiles and satellite) datasets.PublishedHalifax, Nova Scotia, Canada4A. Oceanografia e clim
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