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Search Results: 1 - 10 of 2588 matches for " Giorgio Marchesini "
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A comparison of nitrogen use efficiency and surplus in two dairy farms typologies
Severino Segato,Giorgio Marchesini,Igino Andrighetto
Italian Journal of Animal Science , 2010, DOI: 10.4081/ijas.2009.s3.178
Abstract: Referring to the Destra Brenta district (Veneto Region, Italy) two farming systems were considered: grassland-hay (H) vs. arable land-silage maize (M). Manure and crop products belonged to an internal flow, thus an annual farm gate balance of nitrogen (N) was carried out to determine the nutrient use efficiency (NUE) and surplus by using data from a survey. Surplus was determined as difference between inputs (I) and outputs (O) and NUE as ratio between O and I. The main I was represented by purchased concentrate, on the contrary fertilizer accounted only for low amounts. Surplus per surface unit was significantly higher in M-farms group than in H one (269 vs. 369 kg N per ha; P<0.01). Surplus referred to unit of fat corrected milk was significantly lower in M-farms (17.6 vs.15.6 kg of N per ton of FCM; P<0.01) leading to an higher N-NUE (0.260 vs. 0.278; P<0.05).
Effect of non-forage roughage replacement on feeding behaviour and milk production in dairy cows
Giorgio Marchesini,Severino Segato,Paolo Berzaghi,Igino Andrighetto
Italian Journal of Animal Science , 2011, DOI: 10.4081/ijas.2011.e44
Abstract: The objective of this study was to determine whether the partial replacement of roughage from forage with non-forage fiber sources, in a total mixed ration (TMR), could reduce feed sorting by dairy cows without modifying behaviour and milk production. Twelve Holstein cows were fed two TMR maize silage based diets in a cross-over experiment. Compared to the control diet (C-diet), experimental diet (E-diet) was formulated by replacing 8% neutral detergent fibre (NDF) from straw and alfalfa hay with soybean hulls and wheat bran. E-diet had a lower physical effectiveness factor (pef) (0.37 vs 0.34; P<0.001) and physical effective NDF (peNDF) (15.5 vs 14.6%; P<0.01). Feeding and sorting behaviour, ruminal activity, milk yield and composition and blood metabolites were measured. The results indicated that dry matter intake was not affected by diet. Cows fed the experimental TMR spent less time eating (192 vs. 178 min/d; P<0.05) but showed the same number of meals per day. C-diet fed cows sorted against peNDF in a greater extent (98.3 100.9%; P<0.05). Treatments did not affect cows time budget of general behaviors, with particular regard to ruminating activity. Despite different forage sources in TMR, no significant differences in milk yield and quality were detected.
Effect of unsaturated fatty acid supplementation on performance and milk fatty acid profile in dairy cows fed a high fibre diet
Giorgio Marchesini,Igino Andrighetto,Anna-Lisa Stefani,Paolo Berzaghi
Italian Journal of Animal Science , 2010, DOI: 10.4081/ijas.2009.391
Abstract: The influence of unsaturated fatty acid (UFA) supplement on productive performance, physiochemical properties and fatty acid (FA) profile of milk, was investigated in lactating dairy cows fed with high fibre diets. According to a cross-over design, twelve cows were assigned to two experimental settings characterized by different FA profiles. Cows received a high fibre diet (~42% NDF on DM basis) supplemented with soybean based mixtures with these FA compositions: 92.0% of saturated FA (SFA), 2.8% of monounsaturated FA (MUFA) and 5.2% of polyunsaturated FA (PUFA) in the control diet (C-diet); 19.1% of SFA, 20.9% of MUFA and 60.0% of PUFA in the experimental diet (E-diet). The E-diet did not affect dry matter intake nor milk yield. Milk composition and coagulation traits resulted similar between treatments, except for the lactose level, which was lower in the E-diet (5.0 vs 4.8%; P<0.05) and the freezing point (-0.546 vs -0.535 °C; P<0.05). As respects the milk FA profile, the E-diet significantly increased the percentage of UFA because of their greater amount in the ration; however the “transfer” of UFA in milk was limited by the high level of FA biohydrogenation (BH) at the ruminal level. UFA showed low values of carry over in milk (67.5 vs 39.7%; P<0.001) due to the saturation process; on the contrary SFA had a threefold increment (124 vs 323%; P<0.001), mostly due to a peak in the production of stearic acid. In this study, the percentage of CLA in milk (0.50 vs 0.62%; P<0.05) was quite low for both diets, if compared with other studies, and this was probably due to a low vaccenic acid supply at duodenal level.
Colour traits in the evaluation of the ripening period of Asiago cheese
Giorgio Marchesini,Stefania Balzan,Severino Segato,Enrico Novelli
Italian Journal of Animal Science , 2010, DOI: 10.4081/ijas.2009.s2.412
Abstract: The research was carried out on Asiago d’Allevo cheese samples produced in a single farm located in the Altopiano dei Sette Comuni (above 1000m a.s.l.). After 6-12-18 and 36 months of ripening, samples were analyzed for quality traits, in order to evaluate the effect of ripening on colour and gross composition. As expected crude protein and fat significantly increased through the considered period. Ripening led to a significant decrease of L*, a* and b* values. Lightness showed a negative relationship with crude protein, meanwhile a* and b* were both negatively related to fat content. Concerning L*, the trend could be explained by water loss and N-soluble compounds concentration, which could alter protein matrix. a* and b* reduction was probably related to degradation processes such as lipolysis, which seemed to be extensive in hard and long ripened cheese. Ripening affected significantly the light reflectance at all λ with green cheese having the higher values.
Lecithin: a by-product of biodiesel production and a source of choline for dairy cows
Giorgio Marchesini,Severino Segato,Anna-Lisa Stefani,Sandro Tenti
Italian Journal of Animal Science , 2012, DOI: 10.4081/ijas.2012.e37
Abstract: The aim of the present study was to compare the effects of soy lecithins (L), a by-product of the biodiesel production process, and choline chloride microencapsulated with hydrogenated vegetable oils (C) on dry matter intake, milk yield, milk quality traits, milk choline and haematological profile of dairy cows. A total of 12 mid-lactating Holstein Friesian cows were assigned to one of two experimental groups and fed according to cross-over design (2 diets x 2 periods). Diets were isoenergetic, isofibrous and isonitrogenous and had the same content of choline. Dry matter intake was not affected by the diet, but L led to lower milk choline (P<0.05) and to a significantly higher milk yield (P<0.05), although the 3.5% fat-corrected milk (FCM) did not change owing to the higher content of fat in the milk of the C-diet group (P<0.01). The remaining milk components were unaffected by the supplements, except for the milk urea, which was lower in the L-diet group (P<0.01), reflecting a more effective use of degradable proteins by the micro-organisms present in the rumen. With regard to the haematological profile, L led to lower urea (P<0.001) and to higher values of glucose (P<0.01) and non-esterified fatty acids (NEFA)/Cholesterol ratio (P< 0.05), but all of the values fell within the physiological range of lactating dairy cows. Results indicated that soy lecithins can be used as an available and cost-effective source of choline in mid-lactating dairy cows.
Coronary artery anomalies presenting with ST-segment elevation myocardial infarction
Jlenia Marchesini,Gianluca Campo,Riccardo Righi,Giorgio Benea
Clinics and Practice , 2011, DOI: 10.4081/cp.2011.e107
Abstract: ST-segment elevation MI (STEMI) is a rare presentation in patients with coronary artery anomalies. In these patients, the identification of the culprit lesion and its treatment may be difficult, particularly in the emergency setting of primary percutaneous coronary intervention (PCI). From January 2008 to April 2011, 1015 STEMI patients received coronary artery angiography and primary PCI in our centre. Of these, 5 (0.4%) patients showed a coronary artery anomaly. In this paper we reported two rare cases: i) the first is a single coronary artery originating from right sinus of Valsalva; ii) the second is a separate origin of 3 coronary arteries originating from the right sinus of Valsalva. In conclusion, coronary artery anomalies presenting with STEMI are really uncommon, but often are a challenge. The integration between traditional coronary artery angiography and multidetector computerized tomography is crucial to optimize the interventional and medical management of these patients
Anemia pós-cirurgia bariátrica: as causas nem sempre s?o relacionadas à cirurgia
Baretta, Giorgio Alfredo Pedroso;Marchesini, Jo?o Batista;Marchesini, Jo?o Caetano Dallegrave;Brenner, Sérgio;Sanches, Maria Elize Rocha;
ABCD. Arquivos Brasileiros de Cirurgia Digestiva (S?o Paulo) , 2008, DOI: 10.1590/S0102-67202008000200012
Abstract: background: iron deficiency anemia, pernicious and megaloblastic are common after gastric bypass and biliopancreatic diversion. the main causes are due to duodenal exclusion and anastomotic ulcers. however, low protein diet, vitaminic supplementation, medicines, alcohol and tumors must be remembered. cases report: the authors relate two cases of severe anemia after bariatric procedures that were diagnosed as metastatic melanoma in small bowel and a colorectal cancer treated surgically with good results. conclusion: anemias are common after bariatric surgery, however unusual causes like tumors must be suspected in the elderly and in those patients that clinical treatment didn't have good results.
From QCD Lagrangian to Monte Carlo simulation
Marchesini, Giuseppe
High Energy Physics - Phenomenology , 2007,
Abstract: I discuss old and recent aspects of QCD jet-emission and describe how hard QCD results are used to construct Monte Carlo programs for generating hadron emission in hard collisions. I focus on the program HERWIG at LHC.
Il personaggio scontornato in kola dlja Durakov. Dal romanzo di Sa a Sokolov agli adattamenti teatrali
Irina Marchesini
Between , 2012,
Abstract: ITALIAN: Il romanzo kola dlja Durakov (A School for Fools, 1976) di Sa a Sokolov è un’opera particolarmente complessa, che, come osserva acutamente D. Barton Johnson (1986:640)[1] “depicts [the] world through the eyes, and pure, if eccentric, language, of a schizophrenic youth”. Partendo dal dato della sua singolarità, com’è possibile tradurre simili caratteristiche linguistiche e gli effetti che creano in un altro medium? Questa domanda si pone alla base del presente studio, che intende affrontare la questione della traduzione intermediale attraverso la presentazione di un case-study. Scuola degli Sciocchi è stato infatti portato a teatro da diversi registi, tra cui Andrej Mogu ij (Formalnyj Teatr, San Pietroburgo, Russia). Al fine di produrre un effetto simile alla costruzione dell’illusione messa in atto da Sokolov, Mogu ij introduce un nuovo tipo di approccio teatrale, che definisce “vizualnaja associacija” (“associazione visuale”). In una recente intervista il regista spiega come questo procedimento richiami il metodo impressionista di osservazione della natura volta all’ottenimento di un effetto simile. Per meglio comprendere questo processo, la ricerca si concentrerà sulla costruzione di personaggi ibridi e inusuali, mettendone in evidenza le caratteristiche costitutive nel romanzo e nell’adattamento. L’indagine contribuirà non soltanto il dibattito teorico, ma servià ad arricchire la conoscenza in Italia degli artisti discussi. [1] Johnson, D. Barton (1986) “Sasha Sokolov's Twilight Cosmos: Themes and Motifs”, in: Slavic Review, 45, 4 (Winter 1986), pp. 639-649. ENGLISH: Sokolov’s Shkola dlya Durakov (A School for Fools, 1976) is an extremely complex novel, which “depicts [the] world”, as D. Barton Johnson (1986:640)[1] poignantly observes, “through the eyes, and pure, if eccentric, language, of a schizophrenic youth”. How is it possible to translate such linguistic features and the effects they create into another medium? This question lies at the core of my proposal, which aims to approach the problem of intermedial translation from prose to theatre through the presentation of an individual case-study. In fact, A School for Fools has been staged by the director Andrey Moguchy (Formalny Theatre, Saint Petersburg, Russia). With the intention of reproducing Sokolov’s aesthetic construction of illusion, Moguchy introduces a new genre in the theatrical context, the so-called “vizualnaya associaciya” (“visual association”). As the director explained in a recent interview, this original genre recalls the Impressionists’ position in observing and re
The reclaiming of the “izja naja slovesnost’”: observations on the “proethic” language of Sasha Sokolov
Irina Marchesini
Slavica TerGestina , 2012,
Abstract: In the context of the so-called “writing as resistance” (Caramitti 2010), it is possible to outline a tendency towards the recovery of historical continuity within Russian literature. This recuperation is achieved through the (re-)appropriation of the antique Russian literary and cultural tradi-tions, inseparable from the religious element, and through the retrieval of numerous motifs linked to the natural world, in opposition to the So-viet “grand narrative”. In this regard, Sokolov’s work proves to be exemplary, and it is thus analysed in the present research.
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