Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2004 (vol. 52), issue 5
Náklady spojené s tvorbou biologického odpadu v lesním hospodaření a možnosti jejich snížení
Biological waste by-production costs in forest management and possibilities for their reduction
Jiří Kadlec
Acta Univ. Agric. Silvic. Mendelianae Brun. 2004, 52(5), 7-12 | DOI: 10.11118/actaun200452050007 
Biological wastes in forestry were observed from view of their by-production in silvicultural and logging operations. There were identified points where biological waste was produced in this paper, waste costs ratio for silvicultural and logging operations and were made suggestions for reduction of these costs. Biological waste costs give 34.4% of total costs of silvicultural operations and 30% of total costs of logging operations. Natural regeneration and minor forest produce operations are opportunities for reduction of these costs.
Využití denních teplotních extrémů a úhrnu srážek k odhadu globálního slunečního záření
Estimates of daily global solar radiation based on the daily temperature extremes and precipitation sums
Miroslav Trnka
Acta Univ. Agric. Silvic. Mendelianae Brun. 2004, 52(5), 13-28 | DOI: 10.11118/actaun200452050013
Two methods for estimating daily global solar radiation (RG) based on the daily temperature extremes and precipitation sum are compared in the study. All parameters necessary for application of both methods were derived either from literature or from climatic characteristics easily available at the given meteorological stations excluding need for measured RG data. The performance of both methods was assessed with a help of meteorological database including 4 stations in the Czech Republic (data were provided by the Czech Hydrometeorological Institute) and 6 in Austria (data provided by the Austrian Weather Service) containing...
Porovnání metodických přístupů v bilanci organické hmoty ve vztahu k výnosům u monokultury jarního ječmene
Comparison of humus balance methods in relation with yields of monoculture spring barley
Jiří Dubec, Jan Křen, Blanka Procházková, Tamara Dryšlová, Jan Dovrtěl
Acta Univ. Agric. Silvic. Mendelianae Brun. 2004, 52(5), 29-40 | DOI: 10.11118/actaun200452050029
Long term stationary field experiments with continuous spring barley were conducted in the maize-growing region on heavy gleic fluvisol from 1974 to 2002. Two variants of straw management (straw harvested and incorporated into soil), two variants of soil tillage (conventional plough tillage to 0.22 m, shallow disc tillage to 0.12-0.15 m) and three variants of fertilization (30, 60 and 90 kg. N ha-1) were studied. The results of organic matter balance in the examinated period according to particular methods were related to trends of real humus content which is presented in Cox in particular experiment variants. The examinated method...
Vliv podílu svaloviny na obsah intramuskulárního tuku v MLLT u testovaných hybridních prasat
An influence of lean meat kontent on a kontent of intramuscular fat in MLLT of tested hybrid pigs
Libor Sládek, Marie Čechová, Vladimír Mikule
Acta Univ. Agric. Silvic. Mendelianae Brun. 2004, 52(5), 41-46 | DOI: 10.11118/actaun200452050041
The aim of the study was to evaluate a content of intramuscular fat in musculus longissimus lumborum et thoracis (MLLT) of tested carcass pig hybrids (two combinations of multi-breed commercial hybridization) - (CLW x L) x (D x H) (n = 50) and (BU x L) x D (n = 43).Determined values of a content of intramuscular fat of each combination were noted according to sex and according to group of sort in SEUROP system (% of lean meat). High conclusive difference (P≤0.01) was found in measured values of IMT between combinations (CLW x L) x (D x H) (3.39%) and (CLW x L) x D (2.69%). Small difference was determined between sex in both combinations - gilts...
Antropogenní vlivy v podhůří Ždánického lesa
Anthropogenical influences in the underground of the Ždánice forest
Jiří Obršlík
Acta Univ. Agric. Silvic. Mendelianae Brun. 2004, 52(5), 47-60 | DOI: 10.11118/actaun200452050047
On the basis of the pedological research in the years 1962 and 2003 were found following results: in the underground of the Ždánice forest descended the appearance of chernozem from 64% to 39%. From the full measure. From that measure there is only 10.2% of haplic chernozem and 28.8% of eroded chernozem. Further there descended rapidly the appearence of orthic luvisol from 21.6% to just 0.6% of glyic fluvisoils from 14.4% to 9.2%. Three new soils types were registred in the year 2003: colluvial - soils 8% , antropic-soils 8.9% and pararendzin (calcavic regosol) 34.3%. On the basis of the comparison of aerial photos from the year 1971 with present state...
Identifikace živočišného druhu a konkrétního kusu v masných výrobcích při využití PCR
Identification of the species and individual animals in the processed meat products by PCR - based analyses
Lucie Přívětivá, Pavel Stehno, Lenka Putnová, Josef Dvořák
Acta Univ. Agric. Silvic. Mendelianae Brun. 2004, 52(5), 61-72 | DOI: 10.11118/actaun200452050061
The aim of the work was to establish and optimize the molecular-genetic methods, which could be used in the Laboratory of Applied Molecular Genetics (LAMGen) at the Department of Genetics MZLU Brno for the monitoring of food products safety.During the work, the methods of PCR reactions for the detection of cattle, porcine and chicken tissues were optimized and the presence of declared tissues in meat products from the markets was proved. Throughout the identification of individuals in the meat mixture products (after the different technological interventions), we were able to confirm the presence of the concrete head of animal. When accumulating...
O identifikaci elastických vlastností vaječných skořápek při kvazi statickém stlačování
On the identification of the eggshell elastic properties under quasistatic compression
Jana Simeonovová, Jaroslav Buchar
Acta Univ. Agric. Silvic. Mendelianae Brun. 2004, 52(5), 73-82 | DOI: 10.11118/actaun200452050073
The problem of the identification of the elastic properties of eggshell, i.e. the evaluation of the Young's modulus and Poisson's ratio is solved. The eggshell is considered as a rotational shell. The experiments on the egg compression under quasistatic loading have been conducted. During these experiments a strain on the eggshell surface has been recorded. By the mutual comparison between experimental and theoretical values of strains the influence of the elastic constants has been demonstrated.
Metodika snímání a měření vzorků vidličkové zkoušky kvality dřeva
Methodology of scanning and measuring the prong test samples
Aleš Dejmal
Acta Univ. Agric. Silvic. Mendelianae Brun. 2004, 52(5), 83-90 | DOI: 10.11118/actaun200452050083
The proposal of scanning and digitizing of prong test samples used for casehardening of wood is provided. The measurement of magnitude and stress state of residual stresses is usually done by prong test samples. Recently the numerical approach of given problem is more and more applied. To verify the credibility of the model, the comparison with factual specimen is needed. Therefore, the optimal methodological approach and process of specimen digitizing is out of demand. There are two means how to scan the samples, (1) using the analogical camera or (2) scanner. Both means has bean tested. The results of scanning actual prong test samples show that...
Hodnocení trakčních vlastností traktoru na válcové zkušebně
Evaluation of traction properties of tractors in a roller testing station
Pavel Sedlák, František Bauer
Acta Univ. Agric. Silvic. Mendelianae Brun. 2004, 52(5), 91-100 | DOI: 10.11118/actaun200452050091
The aim of this study was to analyse pulling and slipping parameters of tractors on the base of performed pulling tests and to develop general mathematic formulas suitable for the evaluation of pulling properties of tractors of different types in a roller testing station. For these measurements a JOHN DEERE 7820 tractor was used. Pulling characteristics of this tractor were measured in the roller testing station, which was equipped with a dynamometer VDU E270T-E150T. This paper presents results of such tests and enables to estimate with a good degree of accuracy and statistical significance final parameters of pulling properties of tractors. Final...
Vliv přídavku kvasinkové kultury na užitkovost telat
The effect of yeast culture addition on utility of calves
Petr Doležal, Jan Doležal, Ladislav Zeman
Acta Univ. Agric. Silvic. Mendelianae Brun. 2004, 52(5), 101-106 | DOI: 10.11118/actaun200452050101
In the present study, examined was the effect of a yeast culture (Saccharomyces cerevisiae, Strain 47) on performance (especially on daily gains, feed conversion and condition) in an experiment with a group of Holstein calves within the period of plant nutrition. Animals received a diet consisting of 3 kg of good maize silage, 5.5 kg of grass haylage, 1 kg of meadow hay and 1.6 kg of supplementary starter feed mixture ČOT B. The yeast culture was added to the starter in the dose of 1 g.kg-1. This means that each experimental calf received 1.6 g of yeast culture per day. The supplement of yeast culture showed a positive effect on daily gains...
Porovnání masné užitkovosti býků montbéliardského a českého strakatého plemene vykrmovaných do živé hmotnosti 680 kg
Comparison of meat performance of Montbeliarde and Czech Pied bulls fattened to live weight of 680 kg
Gustav Chládek, Jiří Žižlavský
Acta Univ. Agric. Silvic. Mendelianae Brun. 2004, 52(5), 107-114 | DOI: 10.11118/actaun200452050107
Czech Pied bulls (C, n=18) and Montbeliarde bulls (M, n=18) were fattened up to the live weight of 680 kg in identical conditions with the aim to compare their meat performance. Mean values of the observed meat performance characteristics were as follows: slaughter weight 682.1 kg, age at slaughter 593.8 days, daily weight gain 1.088 kg, carcass weight 378.2 kg, net weight gain 0.640 kg, dressing percentage 55.4%, weight of hide 59.3 kg, weight of head and tongue 20.6 kg, weight and proportion of kidney fat 14.9 kg and 2.18%, carcass conformation score 3.06, carcass fatness score 2.20 and weight of the right side of carcass 185.9 kg. The weight and...
Návrh kompostárny v mikroregionu Lednicko-Valtického areálu
Proposal on placing of composting place in micro-region Lednice and Valtice
Pavel Zemánek, Patrik Burg
Acta Univ. Agric. Silvic. Mendelianae Brun. 2004, 52(5), 117-122 | DOI: 10.11118/actaun200452050117
In relation to entrance of Czech Republic to the European union and with wo-revolving harmonization of our law order with EU direction, happen to classification of composting meaning. In presents act there are two circle of problems. First is utilization of rising waste, the second is perfection of soil fertility and raising of enviroment quality.The contribution deal with problems of modelling solution of place to biowaste composting and it's optimum placing, applied on concrete conditions of the Lednice-Valtice Area. The basis is placement of dominant producer of biowaste, their kind, quantity and season in relation to prescription of compost...
Ověření nutriční hodnoty a hypocholesterolemického efektu jarních linií ječmenů na laboratorních potkanech
Verification of nutritive value and hypocholesterolemic effect of spring barley lines in rats
Sylva Pipalová, Jiřina Procházková, Jaroslava Ehrenbergerová, Kateřina Vaculová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2004, 52(5), 123-130 | DOI: 10.11118/actaun200452050123
The aim of a growth model experiment in laboratory rats was to check the nutritive value of the set of newly bred spring barley lines with different grain characteristics. The followed set contained feed type hulless lines bred in the Agricultural Research Institute Kroměříž , Ltd. KM1771 (1), KM 1057 (2), food type hulless lines KM 2082 (3), KM 2092 (4), KM 2062 (5) and lines formed on the basis of crossing with food donors of a waxy endosperm type - hulless line Wabet x Washonubet (6), hulled line Wabet x Krona (7) and Wabet x Kompakt (8). The line Kompakt x Krona (9) and the malting variety Nordus were used as a control (10).The best results...
Podnikatelské subjekty lesního hospodářství České republiky a získávání informací z účetních dat
Entrepreneurial subjects in forestry and data mining from accounting data in the Czech Republic
Zbyněk Šmída
Acta Univ. Agric. Silvic. Mendelianae Brun. 2004, 52(5), 131-146 | DOI: 10.11118/actaun200452050131
Forests owned by the state in the Czech Republic are managed by Forests of the Czech Republic, state enterprise with its headquarters in Hradec Králové. The private companies (established during the economic reform in 1992 and privatization in 1994) carry out silvicultural and logging activities in state forests on the basis of contracts. This study is focused on forest enterprises (contractors); the current situation of business environment in the Czech Republic was studied. There have been found 38 236 forestry entrepreneurs in the Czech Republic, and divided according to legal title, to numbers of employees onto groups on the basis of size and availability...
Aplikace systému opatření proti vodní erozi v porostech speciálních kultur
Application of the system of water erosion control measures in growths of special cultivations
Vítězslav Hálek
Acta Univ. Agric. Silvic. Mendelianae Brun. 2004, 52(5), 147-154 | DOI: 10.11118/actaun200452050147
The aim of the study is to select an optimal variant of the system of water erosion control measures. The water erosion issue was observed and evaluated in 15 blocks of special cultivations-vineyards and orchards. These blocks are situated in the managed area of the join-stock company PATRIA Kobylí. At first the average long-term loss of soil with the influence of water erosion is calculated. The universal Wischmeier-Smith equation is used for this purpose. If the calculated loss of soil exceeds the permissible value, the erosion control measures have to be suggested. The optimal variant has been selected on the bases of the evaluation of several kinds...
Dendrochronologická analýza krovu kostela Nanebevzetí Panny Marie a sv. Ondřeje ve Starém Hobzí
Dendrochronological analysis of the roof of the Nanebevzetí Panny Marie and Sv. Ondřeje church in Staré Hobzí
Michal Rybníček
Acta Univ. Agric. Silvic. Mendelianae Brun. 2004, 52(5), 155-168 | DOI: 10.11118/actaun200452050155
The work deals with dendrochronological analysis of the roof truss of parish church in the locality of Stare Hobzi. The dendrochronological analysis gave an integrated view on a complicated development of this building and it helped us to restore the succession of building adjustments performed on this building. The work is also to introduce the dendrochronology branch to people who participate on or direct perform building-historical research and to show them that it could be an essential helper in their work.