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Search Results: 1 - 10 of 32884 matches for " Osmar Antonio;Ludke "
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Effect of fasting time at farm and transport conditions of slaughter pigs on lairage resting behaviour and skin injuries EFEITO DO JEJUM NA GRANJA E CONDI ES DE TRANSPORTE SOBRE O COMPORTAMENTO DOS SUíNOS DE ABATE NAS BAIAS DE DESCANSO E LES ES NA PELE
osmar antonio dalla costa,Jorge Vitor Ludke,Mateus Jose Rodrigues Paranhos da Costa,Luigi Faucitano
Ciência Animal Brasileira , 2009,
Abstract: The objective of this study was evaluate the effect of pig fasting time at farm (TJG= 9, 12, 15 or 18 hours) and the pen position into the lorry’s livestock compartment (PBO= anterior, middle or rear), deck (PPI= lower or upper) and side (PLA= left or right) on swine and carcass skin bruises occurrence and swine resting behaviour on lairage pens at abattoir. One hundred ninety two females weighing 133.1±10.9 kg from two finishing pig farms were evaluated. A high percentage of pigs with skin bruises were observed at the farm (53.7%), before loading (80.7%), after unloading (91.2%) and before slaughtering (95.8%). Pigs submitted to a TJG of 15 hours presented lower incidence of skin injuries at loading and higher incidence of injuries at downloading and the carcasses had higher incidence of lesions generated by fights when compared to pigs submitted to TGJ of 12 hours. Pigs transported in anterior lorry’s compartment had lower incidence of skin damage on carcass due to density that those transported in the middle position. It is concluded that pigs submitted to 15 hours of fasting time at farm present higher incidence of skin bruises. Pigs transported in anterior lorry’s compartment had lower incidence of skin damage than pigs hold in middle lorry’s compartment. The fasting time at farm had no effect on pigs resting behaviour in abattoir lairage pens. KEY WORDS: Carcass evaluation, heavy-weight slaughter pigs, pig skin injuries index, pig slaughter conditions, pre-slaughter management. Key words: Carcass evaluation, heavy-weight slaughter pigs, pig skin injuries index, pig slaughter conditions, pre-slaughter management O objetivo deste trabalho foi avaliar a influência do tempo de jejum na granja (TJG= 9, 12, 15 e 18 horas) e da posi o do suíno no box da carroceria do caminh o (PBO= anterior, central e posterior), no piso da carroceria (PPI= inferior e superior) e lado (PLA= direito e esquerdo) sobre a ocorrência de les es nos suínos e nas carca as e no comportamento dos suínos nas baias de descanso no frigorífico. Utilizaram-se 192 fêmeas de abate com peso de abate de 133,1±10,9 kg oriundas de duas granjas. Verificou-se alta porcentagem de suínos com les o na pele na granja (53,7%), no embarque (80,7%), no desembarque (91,2%) e ao abate (95,8%). Suínos submetidos a TJG de 15 horas apresentaram menor incidência de les o de pele no embarque e maior incidência de les o no desembarque e, na carca a, maior incidência de les o originada por briga em rela o aos suínos submetidos TJG de 12 horas. Os suínos transportados no box da frente apresentaram menor i
Desempenho, características de carca?a, qualidade da carne e condi??o sanitária de suínos criados nas fases de crescimento e termina??o nos sistemas confinado convencional e de cama sobreposta
Dalla Costa, Osmar Antonio;Amaral, Armando Lopes do;Ludke, Jorge Vitor;Coldebella, Arlei;Figueiredo, Elsio Antonio Pereira de;
Ciência Rural , 2008, DOI: 10.1590/S0103-84782008000800033
Abstract: the objective of this study was to evaluate the effect of housing system on live performance, carcass characteristics, meat quality, and the sanitary condition of pigs raised in six different systems. a total of 803 ms58 x (landrace x large white) hybrid type pigs was used in seven subsequent lots, during the nursery and growing-finishing phases. at the nursery period, the systems evaluated were: conventional (co), deep litter (cs), and intensive free range (siscal), while during the growing-finishing phase only the co and cs systems were evaluated, being the cs system subdivided into three substrates (wheat straw, rice hulls and wood shaving). the factors considered on the statistical analysis were lot, treatment (combination of housing type used during nursery and growing-finishing phases), age (84, 105, 126, 147 e 160 days), and the interaction treatment x age. a significant effect of housing type was observed on weight gain, carcass characteristics, and weight of heart, liver, full stomach and stomach content. animals housed on conventional treatment had higher (p<0.05) weight gain (824 vs. 779g), higher hot carcass weight (75 vs. 69kg) and higher fat thickness (18 vs. 17mm) than the ones raised on deep litter, however, these, on the other hand, presented larger (p<0.05) gut content (360 vs. 204g) and less degree of gut lesion than those of the conventional treatment, eventhough with higher sneeze prevalence. the housing system did not influence the health, however pigs housed on deep litter system during the growing-finishing phase presented lower performance and carcass values than the ones housed in the conventional housing system despite the housing system used during the nursery phase.
Efeito do manejo pré-abate sobre alguns parametros fisiológicos em fêmeas suínas pesadas
Dalla Costa, Osmar Antonio;Ludke, Jorge Vitor;Coldebella, Arlei;Kich, Jalusa Deon;Costa, Mateus José Rodrigues Paranhos da;Faucitano, Luigi;Peloso, José Vicente;Dalla Roza, Darlan;
Ciência Rural , 2009, DOI: 10.1590/S0103-84782009000300033
Abstract: the aim of the research was to evaluate the effect of pig lairage time (pdf=3, 5, 7 and 9 hours) and evaluate the effect of pig position into the truck (pbo) during transportation to slaughterhouse, in winter or summer conditions, on some physiologic parameters evaluated on 64 heavyweight females with mean liveweight of 130kg during pre-slaughter events. the following effects were considered in the statistical analysis of variance model: block (bl=summer farm or winter farm), pdf, pbo and interaction (block x pdf), under other factors. the pdf influenced significativelly blood lactate and saliva cortisol levels. pig submitted to 5 and 7 hours of lairage had higher levels of lactate when compared to pigs submitted to 3 and 9 hours of lairage. during transport the heart rate were higher than in other pre-slaughter events. it is concluded that increasing pdf above 3 hours had no effects on heart frequency, glucose and cpk levels and salivary cortisol levels but affects the blood lactate levels.
Modelo de carroceria e seu impacto sobre o bem-estar e a qualidade da carne dos suínos
Dalla Costa, Osmar Antonio;Ludke, Jorge Vitor;Costa, Mateus José Rodrigues Paranhos da;Faucitano, Luigi;Peloso, José Vicente;Dalla Roza, Darlan;
Ciência Rural , 2007, DOI: 10.1590/S0103-84782007000500031
Abstract: this experiment was aimed at evaluating the effect of three truck-tier models (mc) (metallic simple tier, metallic duple tier and wood simple tier) on the frequency of different kinds of carcass lesions (flc) and pork quality. for this study, three hundred and sixty gilts with an average body weight of 132.72±11.09kg were used. statistic analysis of the data considered the effects of blocks (bl), mc and the interaction mc x bl. mc had significant effect on frequency of lesions caused by fighting, on total frequency of injuries, on ph1 of muscle semispinalis capitis (sc), on phu of muscle sc, longissimus dorsi (ld) and semimembranosus (sm) and on color of the muscles ld e sm. pigs transported in simple metallic truck-tier showed increased values of ph and muscles color. as a conclusion, transportation of slaughter pigs in simple wood truck-tier affects animal welfare negatively, while metallic truck-tier showed positive effects on meat ph and color compared to.
Período de descanso dos suínos no frigorífico e seu impacto na perda de peso corporal e em características do est?mago
Dalla Costa, Osmar Antonio;Coldebella, Arlei;Costa, Mateus José Rodrigues Paranhos da;Faucitano, Luigi;Peloso, José Vicete;Ludke, Jorge Victor;Scheuermann, Gerson Neudí;
Ciência Rural , 2006, DOI: 10.1590/S0103-84782006000500038
Abstract: pre-slaughter events might result in qualitative and quantitative losses on pig carcasses in inadequate management conditions. this study was aimed at evaluating the resting time at the processing plant (pdf= 3, 5, 7, and 9 hours) and the pen position in the lorry's livestock compartment (pbo) on body weight loss (ppc), weight of stomach (full= pec and empty= pev), weight of stomach contents (pce) and stomach lesion score (elg) related to gastric ulcer. for this study, 192 females with average body weight of 130.0±9.9kg were used. the following effects were considered in the statistical analysis: block (season of the year), pdf, pbo and the interaction between block and pdf. there was no significant effect of pdf on the evaluated variables. for pbo, a significant effect was observed on body weight loss, with pigs transported in the frontal pens losing more body weight than those transported in middle and back pens. eleven percent of the animals showed elg characterizing gastric ulcer, while a high percentage of the pigs (41.9%) showed elg grade 1, which characterizes paracheratosis. it is concluded that pigs transported in the frontal pens of the lorry's livestock compartment do have higher body weight losses, and that increasing the resting time at the processing plant from 3 to 9 hours does not impact body weight losses or the incidence of gastric ulcer.
Tempo de jejum na granja sobre o perfil hormonal e os parametros fisiológicos em suínos de abate pesados
Dalla Costa, Osmar Antonio;Ludke, Jorge Vitor;Costa, Mateus José Rodrigues Paranhos da;Faucitano, Luigi;Coldebella, Arlei;Kich, Jalusa Deon;Peloso, José Vicente;Dalla Roza, Darlan;
Ciência Rural , 2008, DOI: 10.1590/S0103-84782008000800032
Abstract: the aim of this study was to evaluate the effect of fasting time on the farm (tjg) and the position of the animals on truck compartment during transport to slaughterhouse in the hormonal and physiological status of heavy-weight swine in order to obtain future management improvements and to reduce meat quality downgrades. sixty-four females obtained from two farms and averaging 133+11kg body weight were used. fasting time evaluated on farms were 9, 12, 15 and 18 h while the positions considered in the truck were box (front, middle, and back), deck (under and upper level) e side (right and left). swine blood concentration of glucose, lactate and cpk were evaluated at slaughter. cortisol concentration on saliva (ccs) was evaluated on the farm (24 hours before uploading and after loading) and at slaughterhouse (after downloading and before slaughter). hearth frequency was continuously evaluated during pre-slaughter management. interaction between tjg and moment of salivary cortisol sampling and heart rate data recording were observed. ccs and heart rate values increased from farm to truck downloading at slaughterhouse, while pre-slaughter resting reduced (p<0.05) the values. the ccs values ranged in a gradient fashion in function of tjg and moment of salivary cortisol sampling in the following manner: pigs submitted to 18 hours of fasting showed smallest changes (p<0.05) of ccs during the pre-slaughter management when compared with ccs of pigs submitted to lower fasting times and, between those, the animals with 9 hours of fasting showed the greatest (p<0.05) variations. before slaughter swine submitted to 9 hours of fasting at farm presented the highest values (p<0.05) of ccs when compared with the other fasting times evaluated. it is concluded that pre-slaughter management conditions affect (p<0.05) the salivary cortisol levels and heart rate but the evaluated tjg had no effects (p>0.05) on glucose, lactate and cpk levels at slaughter time.
Tempo de jejum dos suínos no manejo pré-abate sobre a perda de peso corporal, o peso do conteúdo estomacal e a incidência de úlcera esofágica-gástrica
Dalla Costa, Osmar Antonio;Costa, Mateus José Rodrigues Paranhos da;Ludke, Jorge Vitor;Coldebella, Arlei;Kich, Jalusa Deon;Peloso, José Vicente;Faucitano, Luigi;Dalla Roza, Darlan;
Ciência Rural , 2008, DOI: 10.1590/S0103-84782008000100032
Abstract: the objective of this study was to evaluate the effect of fasting time period (9, 12, 15 and 18 hours) at the farm (tjg) and the pig?s position in the lorry?s livestock compartment (pbo) during the transport from the farm to the processing plant on: body weight loss (ppc), weight of stomach (full= pec and empty= pev), weight of stomach contents (pce), and incidence of gastric ulcer (elg). a total of 192 females with average 34.51±11.80kg of body weigh were used. the statistical model considered the effects of: block (season, bl), tjg, pbo and the interaction between bl and tjg. there was a significant effect of tjg only on stomach content. there was no effect of pbo on any of the evaluated variables. a pec inferior to 500g was observed in 90.3% of the animals, while 8.56% of the pigs presented pec between 500 and 800g. incidence of elg was low (14.97%), and among the elg animals, 13.90% showed grade 1 lesion, and 1.09% grade two lesion. as a conclusion, pigs submitted to a fasting period of 15 hours have less stomach contents at the processing.
Dabigatran, a direct thrombin inhibitor, in atrial fibrillation: Is it already time for a change in oral anticoagulation therapy?
Osmar Antonio Centurion
Journal of Atrial Fibrillation , 2010, DOI: 10.4022/jafib.v1i10.559
Abstract: Atrial fibrillation (AF) is a common arrhythmia, and its prevalence increases with aging and the severity of heart disease. AF affects more than 2 million people in the US, and more than 4 million in Europe. It is expected that the age adjusted prevalence in US will excede 10 million people by the year 2050 .In the last decade, we were able to see the light shed by several trials that dealt with AF mechanisms and the appropriate management of AF patients. Clinical studies have focused mainly on the electrophysiological properties of the substrate in the atrial muscle during sinus rhythm and on the atrial electrical responses elicited by premature timulation method . However, many undamental aspects of this arrhythmia have been poorly understood until quite recently, and there are several features on the mechanisms of AF that makes it difficult to manage it properly. Increasing awareness of AF as a disease with possible fatal complications rather than as an acceptable alternative to sinus rhythm has led to search for clear arguments to support a certain strategy as a golden standard.
Atrial fibrillation complicating congestive heart failure: Electrophysiological aspects and its deleterious effect on cardiac resynchronization therapy
Osmar Antonio Centurion
Journal of Atrial Fibrillation , 2009, DOI: 10.4022/jafib.v1.i7.538
Abstract: More successful recognition and treatment of cardiovascular risk factors and diseases continues to decrease mortality and increase the proportion of elderly population. Therefore, there are more people with increased risk of developing heart failure and atrial fibrillation in the course of their lives. Atrial fibrillation (AF) can complicate the course of congestive heart failure (HF) leading to acute pulmonary edema. The prevalence of AF, in patients with heart failure, increases with the severity of the disease, reaching up to 40% in advanced cases. In these HF patients, AF is an independent predictor of morbidity and mortality increasing the risk of death and hospitalization. Despite the excellent results obtained with different drugs, the optimal medical treatment can fail in the intention to improve symptoms and quality of life of patients with severe HF. Thus, the necessity to use cardiac devices emerges facing the failure of optimal medical treatment in order to achieve hemodynamic improvement and correction of the physiopathological alterations. Cardiac resynchronization therapy (CRT) can reduce the interventricular and intraventricular mechanical dissynchrony in HF patients. It has been shown that CRT increases the left ventricular filling time, decreases septal dissynchrony, mitral regurgitation, and left ventricular volumes allowing a hemodynamic improvement. However, the development of AF in this setting can avoid the beneficial effects of CRT. Therefore, this manuscript will review the available data on this topic, the electrophysiological aspects of AF, to determine what can be done in the event of an AF complicating congestive HF in CRT patients.
Electrophysiological Changes of the Atrium in Patients with Lone Paroxysmal Atrial Fibrillation
Osmar Antonio Centurion,Shojiro Isomoto,Akihiko Shimizu
Journal of Atrial Fibrillation , 2010, DOI: 10.4022/jafib.v1i12.566
Abstract: Introduction: Paroxysmal atrial fibrillation (PAF) is a common arrhythmia, and it is associated with various cardiac conditions. On the other hand, lone PAF has no identifiable underlying cause, and can occur any time for no apparent reason. The underlying causes may modify the electrophysiological properties of the atrium in different ways and extent. However this setting may be different in patients with lone PAF. We sought to investigate the atrial electrophysiological properties in lone PAF. Material and Methods: This study included 62 control subjects (Control group) and 58 patients with lone PAF (LAF group). The following atrial vulnerability parameters induced by programmed atrial stimulation were assessed and quantitatively measured: 1) the atrial effective refractory period (ERP), 2) the atrial conduction delay (CD) zone, and 3) the maximum CD. Results: The mean atrial ERP of the Control group was 215?29 ms, and that of LAF group was 20828 ms, p<0.05. The mean atrial CD zone of the LAF group was (5028 ms) significantly greater than that of controls (3422 ms) (p<0.01). The mean maximum CD of the LAF group (6229 ms) was also significantly greater than that of controls (4320 ms) (p<0.01). Conclusions: There is a greater conduction delay of the atrium and shorter refractoriness in patients with lone PAF. Patients without underlying causes for the development of PAF exhibit abnormalities in the electrophysiological properties of the atrium. Key words: Atrial vulnerability. Atrial refractory period. Atrial conduction time. Atrial fibrillation. Atrial conduction delay.
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