Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2008 (vol. 56), issue 4
Rozdíl v genových a genotypových četnostech mléčného proteinu kapa-kaseinu u býků nabízených do inseminace a jejich skutečný podíl v populaci krav
A difference in allele and genotype frequencies of Milkprotein kappa-casein in bulls offered for artificial insemination and their real proportion in a population of cows
Jiří Bezdíček
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 13-20 | DOI: 10.11118/actaun200856040013 
The aim of this study was an evaluation of allele and genotype frequencies of Milkprotein kappa casein (CSN3) in bulls offred by breeding companies (n = 287) and of a real proportion of these fathers (genotypes) in a population of Czech Fleckvieh cows (n = 27 970) born between 1994 and 2004. An average frequencies of genotypes of the offered fathers and their real proportion in a population of cows was in 1994-2004: AA = 0.3902; 0.4572; AB = 0.4774; 0.3993; AE = 0.007; 0.0004; BB = 0.115; 0.1394 and BE = 0.0105; 0.0036. EE genotype was not found. An average frequency of allele was A = 0.6324; 0.6571; B = 0.3589; 0.3409 and E = 0.0087; 0.002.The...
SLEDOVÁNÍ VÝSKYTU PSYCHROTROFNÍCH MIKROORGANISMŮ V SYROVÉM MLÉCE
Monitoring of psychrotrophic microorganisms in raw milk
Radka Burdychová, Petra Hoferková
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 21-28 | DOI: 10.11118/actaun200856040021
The group of psychrotrophic microorganisms belongs to the microorganisms representing a risk for human health as well as a risk of milk and milk products spoilage. Some genus are considered to be significant producers of proteolytic and lipolytic enzymes. In this work, we analysed raw milk samples (n = 109) originated from 26 different suppliers from the area of North and Middle Moravia. The screening was performed from March 2007 to February 2008. The total bacterial counts (TBC) ranged between 3.2 × 103 to 8.3 × 106 CFU/ml. The psychrotrophic bacterial counts (PBC) ranged between 1.0 × 103 to 8.2 × 106...
VLIV LEPENÍ NA MNOŽSTVÍ EMISÍ VOC
Influence of adhesive bonding on quantity of emissions VOCs
Petr Čech
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 29-36 | DOI: 10.11118/actaun200856040029
The study deals with the influence of urea-formaldehyde glue and veneered bolstering on technological operation veneering on quantity of emission VOCs (volatile organic compounds).The so-called Volatile Organic Compounds (VOC) are among the largest pollution sources of both the internal and external environments.VOC is defined as emission of any organic compound or a mixture thereof, with the exception of methane, whereby the compound exerts the pressure of 0.01 kPa or more at the temperature of 20 °C (293.15 K) and reaches the corresponding volatility under the specific conditions of its use and can undergo photochemical reactions with nitrogen...
KOROZNÍ POŠKOZENÍ NÝTOVÝCH SPOJŮ
Corrosion damage of rivet joints
Michal Černý, Josef Filípek
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 37-46 | DOI: 10.11118/actaun200856040037
The work describes the effect of the atmospheric corrosion upon the mechanical properties of blind rivets. The subject of given research is: corrosion of metal materials, system resistance, design modification and others means of prevention against the corrosion attack. The problem of blind rivets, blind rivet setting, setting equipment, terminology and definitions, characteristic, and special blind rivet setting is also analysed. The experiment itself, the experimental method and the evaluation of the test are described. Mechanism of riveted joint damage produced by galvanic corrosion is proposed. Considerable corrosion damage occurred at combination...
TRVANLIVOST NÁTĚROVÝCH SYSTÉMŮ SE SNÍŽENOU EKOLOGICKOU ZÁTĚŽÍ V LABORATORNÍCH A PROVOZNÍCH PODMÍNKÁCH
Durability of paint systems with reduced environmental impact in laboratory and in-service conditions
Josef Filípek
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 47-56 | DOI: 10.11118/actaun200856040047
The paper presents the results of selected paints durability testing. The paints are applicable for use in agricultural environment, they have been tested for direct contact with drinking water and feedstuff, and they contain reduced amount of environment impacting pollutants and components. Durability testing has been carried out in pure environment of condensation chamber with presence of SO2, and during 10-year experiment in atmospheric conditions. The properties of the paints exposed to different conditions are compared and discussed. According to the results, it is not possible to use the accelerated laboratory experiments for reliable...
Vyhodnocení některých ukazatelů pitné vody ve vybraných, různě hospodařících chovech dojnic v České republice
Drinking water indicator evaluation in selected dairy cow farms with different management system in the Czech Republic
Václava Genčurová, Oto Hanuš, Libor Janů, Antonín Macek, Marcela Vyletělová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 57-76 | DOI: 10.11118/actaun200856040057
The paper evaluates drinking water quality on selected dairy farms on the territory of the Czech Republic. The drinking water samples were collected in the farm milk storage rooms of 30 farms with subsequently made analyses. The pre - selected chemical and microbiological indicators were stated according to the regulation No. 252/2004 Coll. (pH, conductivity, chemical oxygen demand, colour, turbidity, Fe, ammonia ions, nitrites, nitrates, colony count growing at 36 °C, colony count growing at 22 °C, coliform bacteria, Escherichia coli, Ca, Mg, Na, K, Zn, Cu, Mn, Pb, Cr and Ni). The statistical evaluation was performed in the obtained data file...
ZHODNOCENÍ PŮSOBENÍ ROZDÍLNÝCH HLADIN SELENU NA LISTOVOU POKRYVNOST (LAI), VÝNOS A OBSAH SELENU V HLÍZÁCH BRAMBOR
Analysis of different selenium levels influence on leaf area index (LAI), hectare yield and selenium content in potato tubers
Miroslav Jůzl
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 77-84 | DOI: 10.11118/actaun200856040077
In this work are described results of field trials in years 2006 and 2007. In these small plot trials we observed an influence of different selenium levels (control; 12, 24, 48 and 72 kg Se.ha-1 to the soil; 200 and 400 g Se.ha-1 foliar application) on development of leaf area index during vegetation (approx. 60, 67 and 75th day after planting), hectare yield of tubers and on concentration of selenium in tubers.We found out, that development of leaf area index was significantly affected by year, variety and also by dose of applied selenium. The highest value of LAI was reached by control variant and the lowest value...
ANALÝZA KRITÉRIÍ ZÁPISU DO PLEMENNÉ KNIHY RAKOUSKÉHO TEPLOKREVNÍKA
Analysis of criteria for entry of the austrian warm-blood horse into the stud book
Dana Karásková, Iva Jiskrová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 85-94 | DOI: 10.11118/actaun200856040085
The focus of the investigation was on an analysis of criteria for the entry of mares of the Austrian warm-blood horse into the stud book and analysis of the pedigree of the mares. The objective of the thesis was to compare the selected properties of the mares based on their pedigree and to evaluate the effect of the Trakehner horse on the frame, type and conformation of the Austrian warm-blood, to analyse the influence of selected effects on the physique and mechanics of movement on entry into the stud book of the Austrian warm-blood, and to compare selected properties of the mares with the pedigree standard of the Austrian warm-blood. The database...
Obecný model dřeva v typických vázaných úlohách, Část I. - Fenomenologický přístup
General model of wood in typical coupled tasks. Part I. - Phenomenological approach
Petr Koňas
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 95-102 | DOI: 10.11118/actaun200856040095
The main aim of this work is focused on FE modeling of wood structure. This task is conditioned mainly by different organized structures/regions (tissues, anomalies...) and leads to homogenization process of multiphysics declaration of common scientific and engineering problems. The crucial role in this paper is played by derivation of coefficient form of general PDE which is solvable by nowadays numerical solvers. Generality of supposed model is given by wide range of coupled physical fields included in the model. Used approach summarizes and brings together models for various fields of matter and energy common in wood material in wood drying process,...
Obecný model dřeva v typických vázaných úlohách, Část II. - Slabé řešení
General model of wood in typical coupled tasks, Part II. - Weak solution
Petr Koňas, Eva Přemyslovská
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 103-108 | DOI: 10.11118/actaun200856040103
The main aim of this work is focused on weak solution of coupled physical task the microwave drying of wood with stress-strain effects and moisture/temperature dependency. Due to well known weak solution for separated physical fields without coupled effect, author concerns with coupled stress-strain relation coupled with moisture and temperature distribution. For scale dependency the subgrid upscaling method was used. Solved region is assumed to be divided into discontinual subregions according to investigated scale. This approach sugests sequential type of solution for highly coupled task. This way, very huge structures (huge according to geometry...
Dynamika impedance sliznice pochvy a poševní předsíně u cyklujících koz
Impedance pattern of vaginal and vestibular mucosa in cyclic goats
Ivo Křivánek
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 109-114 | DOI: 10.11118/actaun200856040109
The changes of vaginal and vestibular impedance during the oestrous cycle in goats were examined. The onset of oestrus was teased with a buck once a day during the experiment. Impedance was measured by a four-terminal method. The vaginal impedance was recorded under slight pressure of electrodes to the vaginal dorsal wall at the cervix. The vestibular impedance was recorded under slight pressure of electrodes to the vestibular dorsal wall 5 cm from the vulva and at the vulva. The impedance was measured once a day from 4 days before the expected oestrus to 6 days after onset of oestrus. The vaginal impedance at the cervix decreased during pro-oestrus...
PENTOSANY VE VZTAHU K JAKOSTI ŽITA
Pentosans relate to rye quality
Jindřiška Kučerová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 115-120 | DOI: 10.11118/actaun200856040115
The aim of this contribution is the evaluation rye pentosans in the relation to protein content, Falling number, content of maltose and amylograph values. Population and hybrid varieties of rye were grown during 2003-2005. Trials were situated in three different locations of the Czech Republic - Hradec nad Svitavou, Krásné údolí and Staňkov. Content of pentosans varied between 6.60-9.21 %. The highest content of pentosans (average of the three years and three locations) achieved the hybrid variety Picasso (8.11 %), which had the highest Falling number (235.8 s) and amylograph maximum (625.5 AJ), too. The location Hradec nad Svitavou (8.21 % pentosans)...
Vliv genotypu a věku na kvalitu jatečně opracovaného těla u brojlerů a nosných kohoutků
The effect of genotype and age on the carcass quality of broilers and males of the laying hybrids
Martina Lichovníková, Alžbeta Jarošová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 121-126 | DOI: 10.11118/actaun200856040121
In the study the carcass quality of fast growing broilers (F) and slow growing layer males (S) was compared. The effect of age on the carcass quality of S (S1, S2) was also evaluated. The weights of the carcasses were as follows: F 1110 g, S at 90 days of age 1116 g (S1) and S at the age of 132 days 1878 g (S2). Despite similar carcass weight in F and S1, the weight of the breast, and it's proportion to the total body weight was significantly higher (P < 0.001) in F (265 g and 23.9% vs. S1 174 g and 15.6%). Continued fattening of the layer males resulted in increased breast weight (S2 276 g, P < 0.001) but not in breast proportion (S2 14.7%).The...
VLIV BEZOREBNÉHO PŘÍSEVU NA VÝNOSY A BOTANICKÉ SLOŽENÍ PASTEVNÍHO POROSTU
Effect of owersowing on yields and botanical composition of pasture sward
Martin Müller, František Hrabě
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 127-134 | DOI: 10.11118/actaun200856040127
There are several metods of permanent pasture renovation. Different technologies were investigated on a pasture sward. Three seeders (Einböck seeder with the tine harrow, no-till Sulky disc seeder and SPP 8 strip seeder) and two fertilization regimes (with no fertilization and with mineral fertilization N90P30K60 kg.ha-1) were used to determine optimum methods of establishment and the use of oversowed pasture swards. In the first year, renovated plots had a higher DM production than control plots. The pasture oversowing had no effect on herbage production in the second production year. The fertilization had...
Vliv poldrů na průběh povodní v povodí Tiché Orlice
Effects of polders on the course of floods in the watershed of the Tichá Orlice river
Vladimír Pavlík
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 135-142 | DOI: 10.11118/actaun200856040135
Polders show an important water-management function in the flood-control protection of watersheds. The course of actual floods in recent decades and effects of the water works on flood flows have proved the suitability of the construction within integrated flood-control measures in particular watersheds of the Czech Republic. To determine the transformation effect of flood-control measures in watersheds mathematical modelling is an important method, which is used not only in the preparation and design of retention areas but also in dealing with the flood protection of towns and villages. Easy verification of other measures in watersheds is also useful....
KONEČNĚ-PRVKOVÝ MODEL STUPNĚ TŘMENOVÉHO SCHODIŠTĚ
Finite-element model of tread of stair with loadbearing bolts
Radek Pospíšil, Zdeňka Havířová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 143-150 | DOI: 10.11118/actaun200856040143
Stair with load bearing bolts is the special modern type of wooden staircase. This new type of staircase needs a basic verification by valuable standards for using in a different indoor using. Stair with load bearing bolts is combined wooden and metal materials and their mechanical properties in construction.The goal of this paper is to review wooden tread behaviour as consequence of static load defining by Eurocode 5, implemented in Czech standards. Static load is exactly defined in different load values and the loading places. The three different loading place dimensions are defined by Eurocode 5 too.The wooden tread mechanical behaviour...
Chování broskví při výbuchovém zatěžování pod vodou
Behaviour of the peach under underwater shock wave loading
Libor Severa
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 151-160 | DOI: 10.11118/actaun200856040151
The paper concerns with the experimental and numerical study of the peach (Red Haven) at underwater shock wave loading. The behaviour of the peach skin as well as peach stone can be described in terms of elasticity. Following experiments have been performed: tensile testing of the skin (exocarp) specimens at constant elongation at strain rate 0.01 s-1, compression test of the mesocarp specimens at different strain rates corresponding to quasi - static loading, compression test of the mesocarp specimens at the high rates of strain (about 1000 s-1), and compression test of the whole peach stone at strain rate corresponding...
Hodnocení tvarů a mechanických vlastností broskví Red Haven v různých stadiích zralosti
Shape and strength of Red Haven peaches at the different stages of their maturity
Libor Severa
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 161-168 | DOI: 10.11118/actaun200856040161
Global shape of the peaches of the Red Haven variety (harvested on different days during July, 2007) has been characterized by calculating the H/Ds, H/Dc and Dc/Ds ratios. There is no, or nearly no, differences between peaches harvested at the different days. The shape of the all tested peaches was very close to round one. The more detailed description of the peach shape is based on the Elliptic Fourier analysis (EFDs) of the digital photos. The knowledge of the parameters (curvature etc.) is very useful e.g. for the evaluation of the results of the strength tests. Compression tests have been also perforemd...
Vývoj pevnosti broskví během období sklizně
Development of the peach firmness during harvest period
Libor Severa
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 169-176 | DOI: 10.11118/actaun200856040169
The objective of the present study is to characterize the rheological properties of peaches according to the results of puncture test force/displacement curves. The measurements were carried out on the universal testing machine. The firmness of the peaches was measured on the equatorial side of the fruit. Four measurements were carried out on each fruit by varying the orientation at intervals by about 90°. The used approach computed six texture parameters from the curves, which were supposed to be representative of skin hardness, fruit deformation before skin rupture, flesh firmness and mechanical work needed to penetrate the fruit. The data were fitted...
Efekt polymorfismu genu růstového hormonu (GHRH/HaeIII) na mléčnou užitkovost holštýnsko-fríských krav v Polsku
Effect of growth hormone-releasing hormone gene polymorphism (GHRH/HaeIII) on milk performance in polish holstein-friesian cows
Małgorzata Szewczuk, Sławomir Zych, Ryszard Chaberski
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 177-182 | DOI: 10.11118/actaun200856040177
The objective of this study was to evaluate the relationship between the polymorphism within GHRH gene (GHRH/HaeIII) and milk production traits for Polish Holstein-Friesian using PCR-RFLP technique for genotyping. The molecular background of this mutation was defined as the A→C transversion at the intron 2. A total of 220 cows were examined. The following frequencies were established: 0.0227 for genotype AA, 0.3227 for AB, and 0.6546 for BB; 0.1841 for the allele GHRHA and 0.8159 for GHRHB. A highly significant association was found between the GHRH/HaeIII...
VLIV ZPŮSOBU A DÉLKY SKLADOVÁNÍ NA VLHKOST A SENZORICKOU JAKOST TRVANLIVÝCH SALÁMŮ
Influence of different method and different storage life on moisture and senzorial evaluation of durable salamis
Hana Šulcerová, Jiří Štencl, A. Šulcová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 183-196 | DOI: 10.11118/actaun200856040183
Heat-treated salamis "Vysočina" were produced with standard way in a meat factory; their diameter was 55 mm. Samples were stored under laboratory conditions at different temperatures: 5, 10, 15, 20, and 25 °C and sensory analysed every week during one month storage. The dry matter (d.m.) was measured, too. Descriptors of general appearance, sausage casing, texture, cut surface, dry edge, smell, taste, and salty were monitored. Biggest changes were in descriptors general appearance and sausage casing (P < 0.001) and also in dry edge (P < 0.010) during the month period. Germs of moulds were found only at 5 and 10 °C. Rapid increase of d.m. in samples...
Záchrana cenného genotypu borovice blatky s využitím mikropropagačních technik
Preservation of a rare bog pine genotypes using micropropagation techniques
Hana Vejsadová, Helena Vlašínová, Ladislav Havel
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 197-206 | DOI: 10.11118/actaun200856040197
Bog pine (Pinus uncinata DC. subsp. uliginosa (Neumann) Businský) is a subendemic species and appears to be one of the most endangered tree species of the Czech Republic. Its rare populations are at the present time greatly endangered namely by spontaneous hybridization with the Scots pine (Pinus sylvestris L.). Regarding the fact that its protection is insufficient even in national nature reserves (NNR) and the classical propagation by cuttings is problematic, modern methods were adopted for a long-term preservation of the taxon. Growth regulation conditions were investigated for the induction of organogenesis and somatic embryogenesis....
ÚČINNOST REDUKOVANÝCH DÁVEK HERBICIDŮ CALLISTO 480 SC + ATPLUS 463 A BASAGRAN SUPER NA LASKAVEC OHNUTÝ (AMARANTHUS RETROFLEXUS)
Efficacy of reduced doses of herbicide Callisto 480 SC + Atplus 463 and Basagran super on redroot pigweed (Amaranthus retroflexus)
Michal Vondra, Vladimír Smutný
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 207-214 | DOI: 10.11118/actaun200856040207
As far as the field of weed control is concerned, there is a possibility to use methods based on measurements of chlorophyll fluorescence or reflectance of impacting radiation. The application of these methods can contribute to a decrease in the amount of applied pesticides so that it is possible to the reduce costs associated with their purchasing on the one hand and to control risks of environmental damage on the other. Within the period of 2005-2007, a small-plot experiment with grain maize was established and carried out in the Field Experimental Station of Mendel University of Agriculture and Forestry in Žabčice. The experimental doses of the...
Ověření stability RNA pomocí reverzní transkripce a PCR v reálném čase
Determination of RNA stability using reverse transcription real-time PCR
Karel Bílek, Jana Zrůstová, Aleš Knoll
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 219-222 | DOI: 10.11118/actaun200856040219
The aim of this study was to verify an effect of RNA storage in different laboratory conditions. Especially, this work was focused on the importance of using diethylpyrocarbonate (DEPC) treated water for storage of isolated RNA. The effect of storage of RNA samples in different temperatures was monitored according to various times as well. Isolated RNA was incubated at 20 °C, 4 °C, -20 °C and -80 °C, whereas the temperature -80 °C was used as a control. After incubation only mRNA was converted to cDNA by reverse transcription. The polymerase chain reaction in real time (real-time PCR) was used for a measurement of RNA degradation. No statistically...
Dotazníková akce o odčervovacích praktikách v chovech koní v České republice
A survey of helminth control practices in equine establishments in Czech Republic
Marie Borkovcová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 223-230 | DOI: 10.11118/actaun200856040223
In year 2006 a survey was done in Czech Republic, in order to gain data about strategy of parasite control and grazing management of horse breeders and owners. 80 questionnaires were evaluated altogether. 82.5% of breeders claimed self-responsibility for helminth control. All interviewed do the parasite control in all horses at the same time. The results show that in stabled horses the helminth controls are done in interval of 2-4 months. 55% do the helminth control in April. 91.25% variegate the medicaments. Most frequently used drug was Panacur. Calculation of needed dose is by 47.5% respondents done according to the weight of horse. 86.25% graze...
VLIV PLEMENE, POHLAVÍ A ČETNOSTI VRHU NA RŮST, ZMASILOST A PROTUČNĚNÍ IN VIVO U JEHŇAT
Effect of breed, sex and litter size on growth and meatiness and fattiness in vivo in lambs
Martin Hošek, Leona Konečná, Jan Kuchtík, Radek Filipčík
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 231-238 | DOI: 10.11118/actaun200856040231
The main aim of the study was the evaluation of the effects of breed (Suffolk, Merinoladschaf, Oxford Down and Charollais), sex and litter size (singles, twins and triplets) on growth. The study was carried out on the farm in Žabčice in 2007. Within the frame of evaluation of meatiness and fattiness in vivo in lambs the following ultrasound measurements were carried out: depth of musculus longissimus lumborum et thoracis (Dm.l.l.t.) and fat thickness (FT). Ultrasound measurements was done between last pectoral and first lumbar vertebrae after tease out of wool, by ultrasound Aloka SSD 500 with 5 MHz linear probe. The breed had...
ÚLOHA VEGETAČNÍCH PRVKŮ V SOUDOBÉM ZTVÁRNĚNÍ ARCHITEKTONICKÉHO DÍLA
Function of the vegetative elements in contemporaneous interpretation of the architectonic work
Markéta Krejčí
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 239-246 | DOI: 10.11118/actaun200856040239
The creative process during which a vegetation element finds itself in the position of a fundamental part of material design of the building can be found in the field of modern architectural production. Along with other building materials, it has its own task to participate in the composition of architectural space. This represents an authentic approach of the current production where the dominating position of the vegetation material determines the unique character of the final work. In these existing factors of practice, the vegetation material is treated, according to the three branches of purposefulness after Friedrich Schinkel, as fundamental...
POSOUZENÍ KVALITY ČERSTVÉHO A SILÁŽOVANÉHO PIVOVARSKÉHO MLÁTA V PRŮBĚHU SKLADOVÁNÍ
Appreciation of qualities of fresh and ensiled brewers grains during storage
Vladimír Majer
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 247-256 | DOI: 10.11118/actaun200856040247
The main objective of this paper is to assess the changes of content of essential organic nutrients, yeasts and moulds and effect of aerobic fermentation when the fresh (untreated) and treated brewers grains (BG) is stored in the stall conditions. Both the fresh brewers grains from Radegast brewery and that treated by mixture of sodium benzoate (22.9%) sodium propionate (8.3%) and following 90 days anaerobic fermentation were mounded in the entrance of stall and tested in two tests, one during the winter period in February, the other one during the summer period in June. Influence of treatment was evident on the process of fermentation, levels of the...
POROVNÁNÍ UV A VODOU ŘEDITELNÝCH LAKŮ Z POHLEDU MNOŽSTVÍ EMISÍ VOC
Comparing of UV and waterborne lacquers in view of amount of VOCs' emissions
Milan Meloun
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 257-264 | DOI: 10.11118/actaun200856040257
This contribution investigates the problematic of indoor air pollution. There were tested low emitting types of lacquers - UV and waterborne lacquers. The work has been splitted in to two parts. In the first part samples of lacquers were applied on the particle board with beech veneer on the surface. Samples of air with VOCs (Volatile Organic Compounds) from lacquers were taken 3 and 24 hours after application. Tests proved that film layer of UV lacquer emit much smaller volumes of VOCs than acrylic waterborne lacquers or than 2-component epoxide waterborne lacquer. Acrylic waterborne lacquers' materials emitted especially butoxyethylene, epoxide lacquer...
ZHODNOCENÍ EKONOMICKÉHO EFEKTU PŘI ZAŘAZENÍ HRACHU A BOBU DO KRMNÝCH SMĚSÍCH PRO PRASATA
The efficiency of feed pea and faba beans usage in feed mixture for pigs
Antonín Ponížil, Ladislav Zeman, Petr Mareš
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 265-272 | DOI: 10.11118/actaun200856040265
The agricultural company which produces the feeding mixtures endeavor to substitute a part of the feeding dose of soybean meal (content of crude protein: 48 %; below as SBM48) by peas and faba beans coming from the own production with the respect to the economic preferability. Peas are favorable to include into the feeding mixtures when the price of SBM48 overcomes 7.50 CZK/kg, while faba beans by the price of SBM48 higher than 11.40 CZK. By the current prices of feeding cereals (at the beginning of 2008) the level of the cost-effectiveness of breeding and fattening in pigs is 38.20 CZK/kg. The integration of peas into the feeding mixtures the level...
Dynamika růstu listů Festulolium a Dactylis glomerata na konci vegetačního období
Leaf dynamics of Festulolium and Dactylis glomerata L. at the end of the growing season
Jiří Skládanka
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 273-280 | DOI: 10.11118/actaun200856040273
The paper is focused on the assessment of leaf extension rate (LER), leaf appearance rate (LAR) and leaf senescence rate (LSR) in the Festulolium (Festuca arundinacea Schreb. × Lolium multiflorum Lam.) and in the Dactylis glomerata L. at the end of the growing season from the end of September to the beginning of December. In summer, the swards were used for a single cut (beginning of June) or for a double cut (beginning of June and end of July). Measurements were made in three periods from 14 Sept. to 11 Oct., from 11 Oct. to 29 Oct., and from 29 Oct. to 6 Dec. In the first period, LER was higher in Dactylis glomerata...
Účinnost větrolamů na základě měření větrného pole a optické porozity
The efficiency of windbreaks on the basis of wind field and optical porosity measurement
Tomáš Středa, Petra Malenová, Hana Pokladníková, Jaroslav Rožnovský
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 281-288 | DOI: 10.11118/actaun200856040281
Windbreaks have been used for many years to reduce wind speed as a wind-erosion control measure. To assessment of windbreak efficiency two main parameters are using: height of windbreak (H) and aerodynamic porosity. In South Moravian Region the total area of windbreaks is approximately 1200 ha. For purposes of horizontal profile measurement of wind speed and wind direction windbreaks with various spices composition, age and construction in cadastral territory Suchá Loz and Micmanice were chosen. Windbreak influence on horizontal wind profile was found out in distance of 50, 100, 150 and 200 m in front and behind windbreak in two-meter height above...
Příspěvek k poznání preference dřevin bobrem evropským (Castor fiber L., 1758) v břehových porostech nelesních půd v oblasti Soutok (Česká republika)
Contribution to the knowledge of woods preferences of European beaver (Castor fiber L. 1758) in bank vegetation on non-forest land in the forest district Soutok (Czech Republic)
Jakub Urban, Josef Suchomel, Jan Dvořák
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 289-294 | DOI: 10.11118/actaun200856040289
From 2003 to 2005, this work studied the preference of tree species on non-forest land in the forest district Soutok (Southern Moravia, Czech Republic) in order to evaluate the suitability of the area for the development and the its importance in relation to the decrease of damage in neighbouring production forests. The diet included the total of 14 tree species with diameter interval reaching from 1-10 cm to 191-200 cm. The most preferred species was Common Ash (Fraxinus excelsior) (40.5 %) with the diameter 1-10 cm and willow (Salix spp.) (31.7 %) with the diameter 11-20 cm - both species with good ability to regenerate. Activities...