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Search Results: 1 - 10 of 5129 matches for " Angela Cividini "
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THE EFFECT OF PRODUCTION SYSTEM AND WEANING ON LAMB CARCASS TRAITS AND MEAT CHARACTERISTICS OF AUTOCHTHONOUS JEZERSKOSOL AVA BREED
Angela Cividini,Drago Kompan,Sivester ?gur
Poljoprivreda (Osijek) , 2007,
Abstract: Thirty-two Jezersko-Sol ava lambs were used in a 2X2 factorial design to evaluate the effect of production system (fattening in stable with hay and cereals ad libitum or on the pasture) and weaning (suckling or weaned lambs) on carcass and meat traits of lambs. Suckling lambs were slaughtered at 125 days of age (30 kg of live weight) and weaned lambs were slaughtered at 165 days (38 kg of live weight).INTRODUCTIONNo significant differences in daily gain and dressing percentage compared to the production system or weaning were observed. Lambs from pasture had greater percentage of liver, heart and spleen. They had longer and wider carcasses and lower carcass fatness as indicated by lower percentage of kidney fat (1.16 vs. 1.99) and lowerpercentage of fat in leg than lambs from stable. They also had higher percentage of shoulder and leg and lower percentage of back, loin and rib with flank. Production system also affected meat color. Lambs from pasture had higher CIE L, a and b values of Longissimus dorsi muscle. Mostly, weaning influenced carcass fatness and related traits. Suckling lambs had lower fatness score (4.94 vs. 6.25), lower percentage of kidney fat and fat in leg (8.66 vs. 10.31) and lower percentage of rib with flank than weaned lambs. Meat from suckling lambs was also of lighter colour. There was no significant interaction between production system and weaning on studied carcass or meat traits.
The crossbreeding of improved Jezersko-Solcˇava sheep with Charollais to improve carcass traits
Angela Cividini,Silvester Zgur,Dragomir Kompan
Italian Journal of Animal Science , 2010, DOI: 10.4081/ijas.2005.3s.163
Abstract: Thirteen improved Jezersko-Solcˇava lambs (JSR) and 16 crossbreds with Charollais (JSRxCH) were used to evaluate the effect of genotype and sex on carcass traits. Lambs were weaned at around 60 days of age. They were fed with commercial concentrate and hay ad libitum and slaughtered at 30 kg of average live weight at 103 days of age. Crossbred lambs had at the same live weight at slaughter better conformation (9.19 on 15 points scale) than JSR lambs (7.58). Carcasses of crossbred lambs had lower proportion of fat in hind leg and lower proportion of kidney fat. Female lambs had better dressing proportion (46.25%) than male lambs (42.72%). Females had also higher scores for both internal and subcutaneous fatness and higher percentage of kidney fat. They had higher proportion of fat and lower proportion of bone in hind leg.
The Effect of Live Weight at Slaughter and Sex on Lambs Carcass Traits and Meat Characteristics
Silvester ?gur,Angela Cividini,Drago Kompan,Du?an Birti?
Agriculturae Conspectus Scientificus (ACS) , 2003,
Abstract: Twenty-eight (12 male and 16 female) of improved Jezersko-solèava lambs with Romanov (JSR) were used to evaluate the effect of live weight and sex on carcass traits and meat quality. Lambs were weaned at around 60 days of age. They were fed with commercial concentrate and hay ad libitum and slaughtered at 29 kg or 43 kg of average live weight at 105 or 126 days of age. Daily gain from birth to slaughter was higher than 300 g/day and was very similar for both groups. There were no differences between light and heavy lambs in carcass conformation and dressing percentage. Heavy lambs were longer, wider and fatter. The difference in lungs, head and pelt percentage were statistically significant. With increased live weight at slaughter the percentage of neck, back and rib with flank increased and chuck, shoulder and hindleg decreased. Muscle percentage in hindleg increased and bone percentage decreased as live weight increased. Considering meat quality, heavier lambs had lower lightness and higher redness. Lighter lambs had higher pH45 value. Differences between sexes were statistically significant for dressing percentage and carcass fatness with higher values for females. Maleshad higher percentage of liver and head, higher proportion of neck, chuck and shoulder and lower proportion of back and loin. Males tended to have higher values for muscle and bone proportion, and lower proportion of fat in hindleg. Males had lighter meat. Sex had no effect on pH values.
Mare’s milk: composition and protein fraction in comparison with different milk species
Klemen Poto?nik,Vesna Gantner,Kre?imir Kuterovac,Angela Cividini
Mljekarstvo , 2011,
Abstract: The usage of the mare’s milk as functional food especial for children intolerant to cow’s milk, with neurodermitis, allergies and similar disorders desiring to improve the quality of life is fiercely debated for last decades but there were no scientific studies to suggest such use of mare’s milk based on scientific research. The objectives of this study were to determine similarities of mare’s milk in comparison with milk of ruminants (cattle, sheep and goat) and human milk in terms of milk composition and protein fraction as whey proteins, caseins and micelles size. All differences were discussed regarding usage of mare’s milk in human diet and compared to milk which is usually used in human nutrition. Regarding composition, the mare’s milk is similar to human milk in of crude protein, salt and lactose content, but it has significantly lower content of fat. Fractions of main proteins are similar between human and mare’s milk, except nitrogen casein (casein N) which has twice lower content in human than in mare’s milk. Content of casein N from all ruminants’ milk differ much more. Just for true whey N and non-protein nitrogen (NPN) similar content as human and mare’s milk has also goat milk. The casein content is the lowest in human milk; this content is three times greater in mare’s milk and six to seven times greater in goat’s and cow’s milk, while in sheep’s milk it is more than 10 times grater. In many components and fractions mare’s milk is more similar to human milk than milk of ruminants. A detail comparison of protein fraction shows quite large differences between milk of different species. More study and clinical research are needed that can recommend usage of mare’s milk in human diet as functional food on scientific bases.
Med imurje horse population in Slovenia
Klemen Poto nik, Mojca Sim i , Angela Cividini, Andrej alehar, Matja Mesari , Janez Rus, Tatjana Kavar, Peter Dov
Acta agriculturae Slovenica , 2011, DOI: 10.2478/v10014-011-0027-3
Abstract: In the nineteenth and early twentieth century the Med imurje horse played an important role as a draft and working horse in the river Mura region. Nowadays, this area is split between Hungary, Austria, Slovenia and Croatia. In the frame of the project "Management of traditional transboundary breeds on example of a nearly forgotten breed the Murinsulaner", we collected data for cold blooded horses similar to the Med imurje horse. Horses of this type do not exist in Austria anymore, in Croatia they were registered as an authothonous breed Medjimurje horse , and in Slovenia and Hungary this horse has a special section in the stud book for cold blooded horses as a Med imurje type of horse. The Slovenian part of the population of the Med imurje horse is quite heterogeneous regarding body measures. With respect to the scoring system used in the above mentioned project, the majority of scored animals were classified as desired or satisfactory . In order to further develop or to preserve this type of horse or to form a consolidated breed we would have to make a breeding program which would prevent mating among related animals and to cooperate with neighbouring countries in the field of breeding and selection. The only hope to preserve this type of horse on the long term in the region is by using it as a tourist attraction for carriage riding and/or as a draft horse in agriculture in marginal regions.
Stripe formation instability in crossing traffic flows
J. Cividini,H. J. Hilhorst
Physics , 2014, DOI: 10.1088/1751-8113/47/44/445002
Abstract: At the intersection of two unidirectional traffic flows a stripe formation instability is known to occur. In this paper we consider coupled time evolution equations for the densities of the two flows in their intersection area. We show analytically how the instability arises from the randomness of the traffic entering the area. The Green function of the linearized equations is shown to form a Gaussian wave packet whose oscillations correspond to the stripes. Explicit formulas are obtained for various characteristic quantities in terms of the traffic density and comparison is made with the much simpler calculation on a torus and with numerical solution of the evolution equations.
Wake-mediated interaction between driven particles crossing a perpendicular flow
Julien Cividini,Cecile Appert-Rolland
Statistics , 2013, DOI: 10.1088/1742-5468/2013/07/P07015
Abstract: Diagonal or chevron patterns are known to spontaneously emerge at the intersection of two perpendicular flows of self-propelled particles, e.g. pedestrians. The instability responsible for this pattern formation has been studied in previous work in the context of a mean-field approach. Here we investigate the microscopic mechanism yielding to this pattern. We present a lattice model study of the wake created by a particle crossing a perpendicular flow and show how this wake can localize other particles traveling in the same direction as a result of an effective interaction mediated by the perpendicular flow. The use of a semi-deterministic model allows us to characterize analytically the effective interaction between two particles.
Women entrepreneurship in Romania
Angela ON
Revista Romana de Economie , 2011,
Abstract: Considering entrepreneurship the domain with the greatest potential for creativity and innovation, any investigation on this field is recommended, in order to reveal new aspects that can influence the small enterprises development. From this point of view, female entrepreneurship represents an important source of innovation, only partially exploited or even forgotten.
Exact domain wall theory for deterministic TASEP with parallel update
J. Cividini,H. J. Hilhorst,C. Appert-Rolland
Physics , 2013, DOI: 10.1088/1751-8113/47/22/222001
Abstract: Domain wall theory (DWT) has proved to be a powerful tool for the analysis of one-dimensional transport processes. A simple version of it was found very accurate for the Totally Asymmetric Simple Exclusion Process (TASEP) with random sequential update. However, a general implementation of DWT is still missing in the case of updates with less fluctuations, which are often more relevant for applications. Here we develop an exact DWT for TASEP with parallel update and deterministic (p=1) bulk motion. Remarkably, the dynamics of this system can be described by the motion of a domain wall not only on the coarse-grained level but also exactly on the microscopic scale for arbitrary system size. All properties of this TASEP, time-dependent and stationary, are shown to follow from the solution of a bivariate master equation whose variables are not only the position but also the velocity of the domain wall. In the continuum limit this exactly soluble model then allows us to perform a first principle derivation of a Fokker-Planck equation for the position of the wall. The diffusion constant appearing in this equation differs from the one obtained with the traditional `simple' DWT.
Frozen shuffle update for an asymmetric exclusion process with open boundary conditions
C. Appert-Rolland,J. Cividini,H. J. Hilhorst
Physics , 2011,
Abstract: We introduce a new update algorithm for exclusion processes, more suitable for the modeling of pedestrian traffic. Pedestrians are modeled as hard-core particles hopping on a discrete lattice, and are updated in a fixed order, determined by a phase attached to each pedestrian. While the case of periodic boundary conditions was studied in a companion paper, we consider here the case of open boundary conditions. The full phase diagram is predicted analytically and exhibits a transition between a free flow phase and a jammed phase. The density profile is predicted in the frame of a domain wall theory, and compared to Monte Carlo simulations, in particular in the vicinity of the transition.
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