Effect of glycerol on the growing performance of broilers and on the nutrient content of meat, as well as apparent metabolizable energy content of glycerol in the nutrition of broiler chickens [Untersuchungen zum Einfluss von Glyzerin auf die Wachstumsleistung von Broilern und den Nährstoffgehalt des Broilerfleisches sowie zur Ermittlung des Gehaltes an scheinbar umsetzbarer Energie von Glyzerin in der Broilerfütterung]
Schmidt J.,Westungarische University |
Zsedely E.,Westungarische University
Archiv fur Geflugelkunde | Year: 2012
The experiment was conducted with broilers to determine the utilisation of glycerol derived from biofuel by-product and the effect of different doses of glycerol supplementation on growing performance (weight gain, feed, energy and protein utilisation) and the chemical composition of breast and thigh meat. A total of 300 Ross 308 genotype cocks was divided into 3 groups and their diets were supplemented with 0, 5 or 10% glycerol. The AME N content of the fed glycerol was evaluated in a metabolism experiment which was carried out with 24 birds. The apparent metabolizable energy content of the feed grade glycerol (86.3%) was assessed as 13.47 MJ/kg, which represents 93.2% of the GE. During the whole trial the dose of 5 and 10% glycerol increased the feed intake of birds by 21.4 and 16.2%, respectively. The feed consumption rose to a larger extent in the first 3 weeks than in the second part (4-6 weeks) of the trial. In consequence of the higher feed consumption the average live weight of the animals fed 5 or 10% glycerol was 2445 and 2459 g (respectively) at the end of the trial (42 days of age). The values were 13.5 and 14.1% significantly higher compared to the control group (2154 g). In the case of feed, energy and protein utilisation 10% glycerol supplementation achieved the most favourable values, but only small differences were found between the results of the 3 treatments. Glycerol addition did not affect the protein, fat and ash content of breast and thigh meat. Further dietary glycerol influenced the fatty acid profile of meats (breast and thigh) slightly. © Verlag Eugen Ulmer, Stuttgart.
Nemeth K.,Westungarische University |
Zsedely E.,Westungarische University |
Doka O.,Westungarische University |
Schmidt J.,Westungarische University
European Poultry Science | Year: 2014
The aim of the experiment was to determine the AMEN value of feed grade glycerol for laying hens on the one hand and on the other hand to assess the effect of glycerol on egg production, egg weight, egg mass, egg yolk and eggwhite ratio, nutrient content of egg (energy, protein and fat content), and fatty acid profile of yolk. The experiment was conducted with 48 Tetra SL laying hens, placed into individual metabolic cages. Birds were divided into four groups and they consumed a mash laying hen diet supplemented with 0 (control), 5.0, 7.5 or 10% glycerol.The AMEN content of feed grade glycerol (glycerol content: 86.8%) was determined as 15.36 MJ/kg, which is 95.8% of gross energy (15.59 MJ/kg). Feeding the diet supplemented with 5.0, 7.5 or 10% glycerol did not significantly influence egg production, egg weight and egg mass. Furthermore, it did not affect significantly egg yolk and eggwhite proportion, energy, protein and fat content of eggs. But, supplementation of glycerol influenced significantly contents of several fatty acids in egg yolk. Supplementation of 5.0 and 7.5% glycerol increased significantly myristic (C14:0) and arachidic acid (C20:0) content. In contrary, content of heptadecanoic acid (C17:0) was decreased significantly for supplementation of 5% glycerol. In summary, supplementation of glycerol increased the proportion of saturated fatty acids, which is negative for human nutrition. Supplementation of glycerol significantly decreased the content of heptadecanoic acid (C17:1) and increased the content of arachidonic acid (C20:4). Supplementation of 7.5% glycerol significantly increased the contents of linolenic acid (C18:3) and eicosatrienoic acid (C20:3). Simultaneously, feeding the diet with 5% glycerol significantly reduced the contents of docosatetraenoic acid (C22:4) and docosahexaenoic acid (C22:6). This resulted in a narrower (relatively 11%) n-6/n-3 ratio, which is a favorable effect in view of the nutritive value of the egg. Although glycerol supplementation caused significant changes in the case of some fatty acids, the rate of changes was not remarkable. © Verlag Eugen Ulmer, Stuttgart.
Bartha D.,Westungarische University
Acta Botanica Hungarica | Year: 2011
The crown architecture of the trees has only researched in the last decades. In this respect Hallé's study is very important (Hallé et al. 1978), in this they described 23 architectural models about tropical tree species. This kind of model can not use for trees, which are in the temperate zone, therefore Pfisterer and Roloff (2010) worked out another architectural models. This present study gives a classification about the architectural models and types of native, frequently cultivated alien tree and shrub species in the Pannonian Basin. We classified the species into 8 architectural models, within it are 17 different architectural types. Three architectural models (Attims, Leeuwenberg, Scarrone) and 5 architectural types (Aesculus, Cryptomeria, Syringa, Thuja, Tsuga) only contain alien species.
Tanai A.,Westungarische University |
Peredi J.,Westungarische University |
Zsedely E.,Westungarische University |
Toth T.,Westungarische University |
Schmidt J.,Westungarische University
Archiv fur Geflugelkunde | Year: 2011
Experiments were conducted with broilers to determine the effect of dietary CLA supplement on growth performance (weight gain, feed, energy and protein utilisation), fatty acid profile of breast and thigh meat and oxidative stability of meat samples. A total of 200 Ross 308 broilers were divided into 4 groups. Dietary supplements were used as follows: control group: 4% sunflower oil (SO); experimental group 1: 3% SO + 1% CLA product (0.535% CLA); experimental group 2: 2% SO + 2% CLA product (1.07% CLA); experimental group 3: 4% CLA product (2.14% CLA). Body weight of the experimental groups 1 and 2 was significantly higher than that of the control at the end (42 days) of the experiment. The experimental group 1 had the highest body weight. The diet containing 2.14% CLA decreased final weight of chickens compared to the control. The experimental group 1 showed the most favourable feed conversion rate, energy and protein utilisation. Increasing CLA supplement significantly increased CLA content of the meat samples. In parallel with this, meat SFA proportion increased and MUFA and PUFA group's fatty acid quantity decreased in the fat. The MDA content of the breast and thigh meat decreased with increasing CLA supplements proportionally. © Verlag Eugen Ulmer, Stuttgart.
Kiss-Geosits B.,Westungarische University
European Journal of Mental Health | Year: 2010
It is obvious to professionals employed in teaching and education that over the course of their work they continuously need to face a multitude of emotional reactions from children and adults, and need to address the reasons and effects of such. Thus, it is important for them to be knowledgeable of the factors that render easier or more difficult the education process itself, their work, and the conscious ways of combating these difficulties; this, while staying psychologically and emotionally functional both in their work and in their private life. In their helping profession, their most important tool is obviously their own personality. It is important for them to be able to help others, but it is equally important to be able to take care of themselves, these being the two sides of the same process. A person's emotional life affects others - therefore it is not simply a private issue - whereas others, their circumstances, and their way of life affect the state of their inner self. This study set the goal of examining the factors influencing burnout in teachers. It therefore focuses on certain elements of choosing a profession, interests, needs, the relationship between the individual and the environment, parental upbringing attitudes, career patterns in the family, and satisfaction about career choice. Through the question of work and mental health, the author examines the degree to which professional, financial, and moral recognition influence burnout, the impact of the relationship with colleagues and the manager on the risk of burnout, and the connection between symptoms of physical health (days off work / sick leave) and mental health. The author further refines the issue studied along factors of sex, years spent in the profession, and manager / employee status. © 2010 Akadémiai Kiadó, Budapest.