Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2008 (vol. 56), issue 5
Obsahy minerálních živin v půdě a půdní mikrobiální aktivita u vinné révy naočkované arbuskulární mykorhizní houbou (AM) v Chile
Soil mineral concentrations and soil microbial activity in grapevine inoculated with arbuscular mycorrhizal (AM) fungus in Chile
Eduardo von Bennewitz, Estrella Garrido, Claudio Fredes, Lorena Gutierrez, Tomáš Lošák
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 13-17 | DOI: 10.11118/actaun200856050013 
A two year-experiment was carried out to study an effect of root inoculation with arbuscular mycorrhizal (AM) fungus on soil mineral concentrations and soil microbial activity in grapevine (Vitis vinifera) cv. "Cabernet Sauvignon" cultivated in Chile. Plants were inoculated with a commercial granular inoculant (Mycosym Tri-ton®) and cultivated in 20 L plastic pots filled with an unsterilized sandy clay soil from the Vertisols class under climatic conditions of Curicó (34°58' S; 71°14' W; 228 m ASL), Chile.Soil analyses were carried out at the beginning of the study and after two years (four samples of rhizospheric soil for...
Antibakteriální účinky komerčních fosfátů na vybrané mikroorganismy
Antibacterial effects of commercially available phosphates on selected microorganisms
Leona Buňková, Pavel Pleva, František Buňka, Pavel Valášek, Stanislav Kráčmar
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 19-24 | DOI: 10.11118/actaun200856050019
In the food industry, phosphates, polyphosphates and their salts are used, for example, as emulsifying agents in the production of processed cheese. The inhibitory effects of three commercially available phosphates and polyphosphates differing in their chain length (690, S9 and HBS) were tested on a set of 15 gram-positive or gram-negative CCM (Czech Collection of Microorganisms) strains and on 12 bacterial strains isolated from processed cheeses. Five different concentrations of each phosphate were chosen (0.1, 0.2, 0.3, 0.4 and 0.5% w/v) in order to observe the inhibitory effects of the phosphate salts on the growth of the microorganisms tested....
Kvalita surového kravského mlieka z ekologického a konvenčného poľnohospodárstva
The raw milk quality from organic and conventional agriculture
Juraj Čuboň, Vladimír Foltys, Peter Haščík, Miroslava Kačániová, Iveta Ubrežiová, Stanislav Kráčmar
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 25-30 | DOI: 10.11118/actaun200856050025
In the experiment the parameters of milk quality from organic and conventional dairy farm were analyzed. The number of somatic cells was 219. 103.ml-1 in the organic milk and 242. 103.ml-1 in the conventional milk. It seems that conditions of organic farming could be able to have a positive effect of health of mammary gland. We found the highest number of somatic cells at the end of the year (336.103.ml-1 in organic milk in December, respectively 336.103.ml-1 in conventional milk in November). The total bacteria count was higher in organic milk (86.103...
ANALÝZA KONDENZÁTU ZE SUŠENÍ DŘEVA V KONDENZAČNÍ SUŠÁRNĚ ŘEZIVA
The analysis of condensate fluid from wood drying in the condensation drying kiln
Aleš Dejmal, Jiří Zejda
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 31-38 | DOI: 10.11118/actaun200856050031
Some associated substances which are not innate to the drying wood may be evaporated together with moisture to the surrounding environment during the drying process. These substances in high concentrations can be dangerous and have negativ influence on the living environment. This work deals about the results of expertize condensation arose during the drying of spruce wood. Wet spruce lumber was dried by dehumidification system with low temperature conditions (55 °C). The analysis of condensate fluid (water) collected during the first part of drying process shows on a content of some volatile organic compounds. The condensed fluid was get from drying...
Biomechanické parametry stromů ve stadiu aktivní reorientace
Biomechanical performances of trees in the phase of active reorientation
Jana Dlouhá, Tancrède Alméras, Bruno Clair, Joseph Gril, Petr Horáček
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 39-44 | DOI: 10.11118/actaun200856050039
The purpose of the present paper was to investigate the accumulation of growth stresses in a cross section of a tree in active reorientation process and its biomechanical performances i.e. up-righting efficiency and stem flexibility. Effect of two factors was analysed in details: occurrence of juvenile wood and viscoelasticity of wood tissues. In a phase of active reorientation, wood tissues close to the pith are submitted to significant levels of compressive stresses. Production of juvenile wood in earlier stage of a tree life seems to increase the stem flexibility during active reorientation for both softwoods as well as hardwoods. Concerning the...
VLIV KATEGORIE SKOTU NA JAKOSTNÍ PARAMETRY JATEČNĚ UPRAVENÉHO TĚLA
The effect of cattle categories on carcasses quality parameters
Radek Filipčík, Jan Šubrt, Marek Bjelka, Martin Hošek, Petra Puklová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 45-50 | DOI: 10.11118/actaun200856050045
The main aim of the study was the evaluation of the quality of carcasses of bulls (n = 196), heifers (n = 83), steers (n = 39) and cows (n = 61) by morphometric analysis and cutting of right parts of carcasses. All categories under study were bred on the farm in Moravia and East Bohemia. Bulls and heifers were slaughtered at average age 661 days, whereas their average age was 668 ± 52 kg. Cows were slaughtered at the age from 2.5 to 8 years, while their average weight was 573 ± 121 kg. Statistically highly significant differences (p < 0.01) were found between length and low-level size of body of all categories under study. The best...
Rozdíly některých ukazatelů vlastností syrového mléka a zejména minerálního složení mezi malými přežvýkavci ve srovnání s kravami v České republice
Differences of some indicators of raw milk properties and especially mineral composition between small ruminants as compared to cows in the Czech Republic
Oto Hanuš, Marcela Vyletělová, Václava Genčurová, Irena Hulová, Hana Landová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 51-56 | DOI: 10.11118/actaun200856050051
Sheep and goat farming is returning back into the Czech Republic (CR) because of positive effects of alternative milk consumption on human health. Especially the elements Ca and Mg are important for nutrition. Paper presents the comparison of mineral milk composition of goats (White short-haired-W, n = 60), sheep (Tsigai-C, n = 60) and cows (Holstein-H, n = 36; Czech Fleckvieh-B, n = 93). Cow milk results were considered as reference. The herds were kept at altitude 260 m (H), 360 m (B), and 572 m above sea level (W, C) with total precipitation 449, 700 and 1200 mm per year and mean air temperatures 9.6, 7.0 and 3.7 °C. Bulk milk samples (4-8 animals...
Validace hlubokého zamrazování pilotních vzorků pro kontrolu stability výsledků nepřímých analýz základního složení mléka a pro jejich dlouhodobou údržnost
Validation of deep freezing of pilot samples for checking of time stability of indirect analyses of basic milk composition and for their long shelf-life
Oto Hanuš, Pavel Hering, Václava Genčurová, Zdeněk Motyčka, Jr., Radoslava Jedelská, Jaroslav Kopecký
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 57-68 | DOI: 10.11118/actaun200856050057
Essential part of raw milk component measurement is indirect infraanalyse. The checking of time measurement stability is important there. The preparation of pilot samples was described. Information about deep frozen milk pilot sample stability are sporadic. Aim of this work was to verify the stability of long-term stored and deep frozen pilot samples (FPSs). Pilot samples were frozen in liquid nitrogen bath -196 °C and after that stored at -21 °C for one month (A) and more months (B) till analyse. The pilot samples were measured by CombiFoss 6000: fat F (%); protein CP (%); lactose L (%); casein C (%); solid non fat SNF (%); urea U (mg/100ml); somatic...
Hodnocení variability tvarů slepičích vajec
On the evaluation of chicken egg shape variability
Miroslav Havlíček, Šárka Nedomová, Jana Simeonovová, Libor Severa, Ivo Křivánek
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 69-74 | DOI: 10.11118/actaun200856050069
Although recently reported models for determining egg shape are highly accurate, certain complicated measurements or computations are to be performed. Thus relatively simple and attainable analysis methods of chicken egg shape variability were chosen and used for the purpose of presented research. Sample of 250 eggs of ISA BROWN strain was examined. Geometrical parameters were measured and calculated with following expression of their coefficient of variation - namely egg length 3.56 %, egg maximum width 2.84 %, shape index 3.80 %, surface area 5.08 %, and egg volume 7.23 %. The second method consisted in shape quantitative measuring by the score of...
VLIV ŠŤOVÍKU TUPOLISTÉHO (RUMEX OBTUSIFOLIUS L.) NA KVALITU TRAVNÍCH SILÁŽÍ
Effect of broad-leaved dock (Rumex obtusifolius L.) on grass silage quality
Stanislav Hejduk, Petr Doležal
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 75-80 | DOI: 10.11118/actaun200856050075
The effect of broad-leaved dock (BLD) on nutritive value and fermentation process of grassland forages was studied together with the effect of formic acid addition (4.0 vs. 2.0 l.t-1) and inoculation by lactic acid bacteria (LAB). Herbage of dock exhibits low DM content, crude protein and fibre contents, yet its NEL concentration is low.Despite of the low DM content in BLD silages, the fermentation process was successful, but the silages show significantly higher contents of lactic acid (176.5 %), acetic acid (198.2 %) and lover pH values (4.24 vs. 4.39) as compared with than the grass silage. Silages made of dock do not contain butyric...
POROVNÁNÍ VLASTNOSTÍ DŘEVA SMRKU ZTEPILÉHO - PICEA ABIES (L.) KARST. V RŮZNÉM STAVU A STUPNI DEGRADACE DŘEVOKAZNOU HOUBOU SERPULA LACRYMANS (WULFEN) J. SCHRÖT.
Comparison of the properties of the Spruce wood Picea abies L. (Karst.) in various state and rate of degradation by wood-destroying fungus Serpula lacrymans Schröter
Jiří Holan, Lukáš Merenda
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 81-88 | DOI: 10.11118/actaun200856050081
This article deals with the change of mechanical properties of the Spruce wood (Picea abies L. Karst.) which was exposed to the attack of the wood-destroying fungus Serpula lacrymans Schröter.An activity of the wood-destroying fungus has negattive effect on the wood and its properties. Growth of the wood-destroying fungus causes degradation of the chemical components of wood. Due to this the mechanical properties are changed and strength of the degraded wood is decreasing with extend of the activity time of the wood-destroying fungus. Together with this Serpula lacrymans Schröter causes the weight-shortage.For tests in...
ODOLNOST DŘEVA VŮČI OHNI V ZÁVISLOSTI NA TLOUŠŤCE MATERIÁLU
The fire resistance of wood depending on material's thickness
Jiří Holan, Lukáš Merenda
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 89-96 | DOI: 10.11118/actaun200856050089
The paper presents the resisitance of wood against a pilot flame. The fire has negative effect on the wood and its properties. The fire and its high temperature cause a degradation of chemical components of wood. Hence the physical properties are changed and strength of the wood is decreased. The combustion velocity and the loss weight depend on the material's thickness. For tests have been chosen groups of samples with thickness of 5, 10, 15 and 20 mm.The result of submitted work is a time estimation of the fire penetration and an observation of weight losses coupled with visual changes observation of degraded samples. It have been established...
OVĚŘENÍ VÝNOSOVÉHO MONITORU ACT 40 PRO SYSTÉM PRECIZNÍHO ZEMĚDĚLSTVÍ
Verify yield monitor ACT 40 for precision farming system
Milan Hrůza, František Bauer
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 97-104 | DOI: 10.11118/actaun200856050097
One of the most important parts in a precision farming system is the crop yield mapping. The pre-processing of the point data from combine harvesters, the transfer of the yield data onto the management grid and the interpolation of the yields are discussed, as well as using of the yield data themselves. The goal of the contribution was to verify, with the help of the field measuring on two stations, the dependence of the yield obtained by processing of the measured yield data from the combine harvester (where the yield monitor is installed) on the weighted yield. This is because of yield variability, which is the basic dependent variable of majority...
VLIV VĚKU NA SENZORICKOU KVALITU MASA KOHOUTKŮ NOSNÉHO TYPU
The effect of age of sensory meat quality of males of laying hybrids
Alžbeta Jarošová, M. Lichovníková, P. Straka
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 105-110 | DOI: 10.11118/actaun200856050105
The aim of the study was to evaluate the sensory quality of carcass of layer males ISA Brown. The males were fattened to 90 and 132 days. In both ages samples of breast and thigh were used for the sensory evaluation.The birds were provided by a private producer. There were 20 birds in each experimental group. Both the groups were housed on deep litter and fed a commercial broiler diet. The first group was slaughtered at 90 days of age at a processing plant, the second group continued fattening till 132 days at the Department of Animal Breeding. At 132 days, the birds were slaughtered at the in-house abattoir.The sensory evaluation was carried...
Složení a toxicita sinic rybníků jižní Moravy v závislosti na intenzitě rybářského hospodaření
Diversity and toxin content of cyanobacteria in fish ponds (South Moravia, Czech Republic) related to fishery management intensity
Radovan Kopp, Andrea Ziková, Jan Mareš, Stanislav Navrátil, Ondřej Adamovský, Miroslava Palíková
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 111-118 | DOI: 10.11118/actaun200856050111
During the vegetative period of the year 2005 (June-October) we carried out hydrobiological and hydrochemical monitoring of selected ponds inhered in Southern Moravia in relation to different fishery management intensities. Water temperature, dissolved oxygen content, pH, conductivity and water transparency were monitored directly at taking place, N-NH4+, N-NO2-, N-NO3-, P-PO43- content and chlorophyll-a concentration were measured in hydrochemical laboratory. At the same time, water samples for taxonomical analyses of phytoplankton and assessment of toxin content...
Vliv rychle fermentovaného prasečího hnoje na výnosové parametry brokolice a vybrané půdní parametry
The effect of quickly fermented pig manure on the broccoli yield parameters and selected soil parameters
Peter Kováčik, Anton Uher, Tomáš Lošák, Peter Takáč
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 119-124 | DOI: 10.11118/actaun200856050119
The effect of Difert (a pig manure fermented by caddices of domestic flies produced on sawdust litter) on broccoli yield parameters and selected soil parameters were investigated on gleic fluvisol in a small-plot field trial localized at area of Slovak University of Agriculture in Nitra (48°18' N, 18°05' E).The results showed that Difert applied in doses of 250 kg N.ha-1 and 350 kg N.ha-1 acted positively on the yields of fresh primary broccoli roses. However, the results are not statistically significant. Also a positive effect on N, P, K, Ca, Mg contents in broccoli roses was recorded. Difert has a moderate alkalizing effect...
Dielektrické vlastnosti materiálů při mikrovlnných frekvencích
Dielectric properties of materials at microwave frequencies
Ivo Křivánek
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 125-132 | DOI: 10.11118/actaun200856050125
The paper introduces the review of the present state of art in the measurement of the interaction of electromagnetic waves with different kinds of materials. It is analysis of the possibilities of the measurement of the interaction of high frequencies waves (microwaves) with materials and proposal of the experimental method for the studies mentioned above.The electromagnetic field consists of two components: electric and magnetic field. The influence of these components on materials is different. The influence of the magnetic field is negligible and it has no impact on practical use. The influence of the electric field is strong as the interaction...
Základní srovnání celkové kvality hroznů ze dvou odlišných stanovišť révy vinné (Vitis vinifera)
The basic comparision of total grape quality of vine from two different locations of vine (Vitis vinifera)
Lubomír Lampíř, František Muška
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 133-140 | DOI: 10.11118/actaun200856050133
The aim of the work was to compare the course of agro-ecological indicators according to the internationally acknowledged parameters - the balance of vine bunches, the berry balance, the weight of vine bunches, the berry weight in 7 varieties of vine in three resistant white varieties Merzling, Malverina and Hibernal and in one blue variety - Medina, then in classical varieties Aurelius, Chardonnay and Muscat Moravian in two locations Perna (sub-region Mikulovice) and Sadek (sub-region Znojmo). The evaluation of the grape quality was carried out in accordance with common standards used in the Czech Republic. The following parameters were monitored...
Synanthedon mesiaeformis (Herrich-Schäffer) nově v České republice a ve Španělsku (Lepidoptera: Sesiidae)
Synanthedon mesiaeformis (Herrich-Schäffer) new to the Czech Republic and to Spain (Lepidoptera: Sesiidae)
Zdeněk Laštůvka, Aleš Laštůvka
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 141-146 | DOI: 10.11118/actaun200856050141
Synanthedon mesiaeformis (Herrich-Schäffer, 1846) has been found in the Czech Republic and in Spain for the first time. The species was found in the south-easternmost part of the Czech Republic, near the town of Břeclav (faunistic quadrat 7267) in May 2008. The holes and pupae were found only in one, solitary growing group of trees about 20 years old. This finding place lies at a distance of more than 250 km from the localities in SW Hungary and about 550 km from the localities in eastern Poland. In June 2008, the species was found also in alders growing in the flat river alluvium on gravel sands between La Jonquera and Figueres in northern...
Konstitutivní rovnice másla při statickém zatěžování
Constitutive equation of butter at static loading
Šárka Nedomová, Libor Severa
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 147-152 | DOI: 10.11118/actaun200856050147
This study focuses on the constitutive modelling of finite deformation in the commercially obtained butter (composition is 83 % of milk fat) at the temperature 17-20 °C. The specimens from the butter (height L0=14.6 mm and diameter 20 mm) have been compressed between two parallel metal plates at a fixed crosshead speed 20 mm/min using of the testing device TIRA TEST. The force F and the deformation ΔL are measured during compression and both quantities are recorded. The experimental records force F - displacement (deformation) were obtained. These records have been transformed into stress-strain dependences and...
Vliv intenzity využívání a úrovně hnojení na produkci a kvalitu píce trvalého travního porostu na fluvizemi glejové
Effects of utilisation intensity and fertilization level on forage production and quality of permanent grassland on a fluvisoil
Pavel Nerušil, Alois Kohoutek, Petr Komárek, Věra Odstrčilová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 153-162 | DOI: 10.11118/actaun200856050153
In 2003-2007 the issue of the forage production and quality on the permanent grassland was researched by the Crop Research Institute Prague, Research Station Jevíčko. The long-term small plot trials with tall oatgrass stand type (Arrhenatherion) were established in 2003 on a fluvisoil. Four types of utilisation were used in the trial: 1. Intensive (I1) - 4 cuts per year (1st cut on 15th May, every next after 45 days); 2. Medium intensive (I2) - 3 cuts per year (1st cut on 30th May, every next after 60 days); 3. Low intensive (I3) - 2 cuts per year (1st cut...
Vliv redukčních a oxidačních činidel na reologii pšeničného těsta
The influence of reducing and oxidising agents on the rheology of wheat flour dough
Pavlína Pečivová, Vladimír Pavlínek, Jan Hrabě, Stanislav Kráčmar
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 163-170 | DOI: 10.11118/actaun200856050163
The effects of a reducing agent (L-cysteine hydrochloride monohydrate), oxidising agents (inactivated dry yeast, L-tyrosine) and other two amino acids (L-threonine and L-tryptophan) on the rheological characteristics of wheat flour dough and its quality were studied. The addition of oxidising agents increases the values such as tenacity and decreases extensibility which were measured on the alveograph. From the consistograph values, weakening of the dough also decreases. While reducing agents increase the extensibility and weakening of the dough, they decrease its deformation energy. The addition of L-tryptophan caused a higher increase in tenacity...
NĚKTERÉ SLOŽKOVÉ A ZDRAVOTNÍ UKAZATELE KVALITY MLÉKA DOJNIC S VYŠŠÍ UŽITKOVOSTÍ PŘI ZAŘAZENÍ VYBRANÝCH DRUHŮ OBILOVIN DO KRMNÉ DÁVKY
Some compositional and health indicators of milk quality of dairy cows with higher milk yield at including of selected corn species into feeding ration
Jan Pozdíšek, Oto Hanuš, Kateřina Vaculová, František Mikyska, Jaroslav Kopecký, Radoslava Jedelská
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 171-180 | DOI: 10.11118/actaun200856050171
Because of economical reasons the substitution of maize by feed corn as wheat (Sulamit) and triticale (Kitaro) was revolved in concentrate part of dairy cow feeding rations. The design of mentioned replacement in feeding rations was carried out according to results of previous research (Pozdíšek and Vaculová, 2008) for nutrition experiment. The aim of this paper was to evaluate the possible effects of corn replacement in cow feeding rations on milk composition and properties. The expressively different variants of corn were selected for experiment in comparison to maize (reference). Dairy cows were fed by total mixed ration on the basis of maize and...
POROVNÁNÍ ZÁKLADNÍCH TĚLESNÝCH MĚR ACHALTEKINSKÝCH KONÍ CHOVANÝCH V ČESKÉ REPUBLICE, RUSKU A KAZACHSTÁNU
The comparison of the body measures of the Akhalteke horses bred in Czech Republic, Russia and Kazakhstan
Michaela Prausová, Iva Jiskrová, Eva Sobotková, Libor Majvelder
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 181-186 | DOI: 10.11118/actaun200856050181
Our research object was to record and to measure as much as possible Akhalteke horses, which are bred in Czech Republic, Russia and Kazakhstan. We measured and recorded 3 basic body measures - Height at withers, chest girth and girth of cannon. The only condition we have was the age of horses determined on to 3.5 years and older. At the end we recorded 260 horses. We divided the values to the groups according to state, sex and age cathegory. We use the GLM method and Tukey-B test to evaluate the results. The results of the analyse of the Height at withers (HW) shew the statistically conclusively lower values of Czech horses than in horses from Russia...
SLOŽENÍ A TECHNOLOGICKÉ VLASTNOSTI MLÉKA ZÍSKANÉHO Z RANNÍHO A VEČERNÍHO DOJENÍ
The chemical composition and technological properties of milk obtained from the morning and evening milking
Martin Skýpala, Gustav Chládek
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 187-198 | DOI: 10.11118/actaun200856050187
Milk yield varies during lactation, following what is termed a lactation curve. ŽIŽLAVSKÝ and MIKŠÍK (1988) recorded changes in milk yield within a day, too. TEPLÝ et al. (1979) a KOUŘIMSKÁ et al. (2007) published variation within a day ± 1.10 kg in milk yield, ± 0.75 % in milk fat content and ± 0.20 % in milk protein content. Milk yield of cows can be expressed in many different ways, for instance, in kilograms per lactation or in kilograms per day. A practical parameter describing milk production is milk yield (kg) per milking.The object of experiment were 12 cows of Holstein cattle on the first lactation from the...
Zoobentos malých toků Svitavska
Zoobenthos of small brooks of the Svitavy region
Ivo Sukop
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 199-202 | DOI: 10.11118/actaun200856050199
The qualitative and quantitative composition of macrozoobenthos of two brooks of the Svitavy region was studied. Both brooks rise in the region with formerly mines. Altogether, 61 taxa of macrozoobenthos were determined. Saprobical indices of both brooks correspond to beta-mesosaprobity class at all sampling sites.
Změny ve vybraných produkčních parametrech a ve složení mastných kyselin slunečnice (Helianthus annuus, L.) v závislosti na aplikaci dusíku a fosforu
Changes in selected production parameters and fatty acid composition of sunflower (Helianthus annuus, L.) in response to nitrogen and phosphorus applications
Petr Škarpa, Tomáš Lošák
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 203-210 | DOI: 10.11118/actaun200856050203
The effect of N and P fertilization on the dry matter content, concentration of nutrients (N, P, K, Ca and Mg) and their intake by the plant, production characteristics (achene yields, head diameter, 1000-seed weight, oil content and oil production) and the content of fatty acids (palmitic, stearic, palmitooleic, oleic, linoleic and linolenic) was evaluated in the one-year pot trial with sunflower (Helianthus annuus, L.). Nitrogen application had a positive effect on dry matter production and increased N intake by plants as early as the beginning of vegetation (4th true leaf). The effect of P on dry matter production was not markedly...
OPTIMALIZACE PROCESU MRAŽENÍ VEPŘOVÉHO A HOVĚZÍHO MASA PRO VÝROBU FERMENTOVANÉHO "MÉTSKÉHO SALÁMU"
Optimalization of frozing period of pork and beef for processing of fermented "Mettwurst"
Hana Šulcerová, Radka Burdychová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 211-220 | DOI: 10.11118/actaun200856050211
In this work, the level of microbial contamination of pork and beef meat for processing of heat-untreated fermented meat products was monitored. In company providing samples for this work, meat was kept frozen for period of 6 days (144 hours), which was not effective due to the financialy expensive frozing storages. The relationship between meat freezing period and number of selected technological as well as hygienical significant microorganisms was monitored, with the aim to optimize frozing period to keep microbial quality of meat and meat products. Microbiological analysis of meat samples was performed before freezing of meat and after 48, 72, 96,...
Polymorfismus prolaminových bílkovin u vybraných odrůd ozimé pšenice registrovaných v České republice
Polymorphism of prolamin proteins in selected varieties of winter wheat registered in the Czech Republic
Tomáš Vyhnánek
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 221-226 | DOI: 10.11118/actaun200856050221
In 2006 and 2007 samples of harvested grain were used to verify the possibility of distinguishing 12 winter wheat genotypes and of detecting impurities on the basis of polymorphism of prolamin kernel proteins. Uniform electrophoretic patterns were detected in genotypes of Athlet, Buteo, Dromos, Ebi, Etela, Florett, Livia, Simila wheat in 2006 and 2007. On the basis of the identity index two sister prolamin lines with different share, depending on the year of harvest, were discovered in 3 wheat genotypes (Astella, Brea and Hana). The proportion of sister gliadin lines in the Astella and Brea genotypes was the same in both years. There was only minor...
STANOVENÍ KVALITY FERMENTACE PIVOVARSKÉHO MLÁTA SILÁŽOVANÉHO V KOMBINACI S PŘÍDAVKEM SLADOVÉHO KVĚTU A CHEMICKÉHO SILÁŽNÍHO ADITIVA
Evaluation of fermentation quality of brewers' grains ensiled in combination with malt sprouts and chemical conservation additive
Ivo Vyskočil, Petr Doležal, Jan Doležal, Václav Pyrochta, Libor Kalhotka
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 227-234 | DOI: 10.11118/actaun200856050227
The aim of the work was to evaluate the effect of addition of humidity absorbent (malt sprouts) and chemical conservation additive on fermentation process quality of brewer grains' silage. Chemical conservation additive was based on formic acid, propionic acid, benzoic acid and ammonium formate content. In a model experiment the fresh brewer grains were used. A dry matter (DM) content of brewer grains was 187.4 g/kg. Six treatments with three repetitions per treatment were prepared. The treatments A1, A2 and A3 were not supplied by humidity absorbent. Treatment A1 was a control treatment without any additive. The treatments...
VLIV ODLIŠNÉHO ZPRACOVÁNÍ PŮDY NA ZAPLEVELENÍ JARNÍHO JEČMENE V PODMÍNKÁCH SRÁŽKOVĚ SUŠŠÍ OBLASTI ČESKÉ REPUBLIKY
The impact of different soil tillage on weed infestation of spring barley in conditions of dryer climatic areas Czech Republic
Jan Winkler
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 235-242 | DOI: 10.11118/actaun200856050235
The impact of soil tillage on weeds in spring barley was observed on the field trial. The field trial was established in very warm and dry climatic region (experimental field station in Žabčice, Mendel University of Agriculture and Forestry Brno, Czech Republic). In the experiment there was used 7-strip crop rotation and three variants of soil tillage: conventional tillage (CT), minimum tillage (MT), when soil is shallow loosened and no tillage (NT) what means direct sowing without any soil tillage. The weed infestation was evaluated by counting method before herbicide application. Analysis of variance (ANOVA) and then LSD methods, DCA (Detrended...
Ovlivnění obsahu síry a fosforu u brambor po aplikaci selenu do půdy
The effect of selenium application to the soil on the sulphur and phosphorus content in potatoes
Ľubica Zemková, Jaroslav Hlušek, Tomáš Lošák, Miroslav Jůzl, Petr Elzner
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 243-250 | DOI: 10.11118/actaun200856050243
In a small-plot trial with potatoes were applied increasing doses of selenium to the soil (0, 12, 24, 48 and 72 kg Se.ha-1) and after harvest were explored the content of selenium, phosphorus and sulphur in raw tubers and in the tops. The trials were conducted in two localities - Žabčice and Valečov using the semi-early variety Ditta. Selenium was applied to the soil in the form of sodium selenite before planting the potatoes. Chemical analyses discovered that with the applied dose the level of selenium increased in both tubers and tops and that the correlation between the applied selenium dose and its content in tubers and tops was significant...
Vliv microcystinů na změny biochemických parametrů u ryb
Biochemical indices are modulated in fish exposed to cyanobacterial toxins (microcystins)
Jana Hlávková, Ondřej Adamovský, Radovan Kopp
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 255-262 | DOI: 10.11118/actaun200856050255
In this work were summarized changes of biochemical markers of fish under the thumb of cyanobacterial toxins (microcystins). Among the most studied biomarkers of the influence of cyanobacterial toxins on fish belong oxidative stress parameters - glutathione S-transferase (GST), non-enzymatic antioxidant glutathione (GSH), superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), lipid peroxidation (LPO), malondialdehyde (MDA), glutatione reductase (GR), parameters of blood - values of haemoglobin (Hb), haematocrit (PCV), mean corpuscular haemoglobin concentration (MCHC), mean corpuscular volume (MCV), mean corpuscular haemoglobin (MCH),...
Vliv microcystinu, toxinu sinic, na laboratorní hlodavce in vivo
Impacts of microcystin, a cyanobacterial toxin, on laboratory rodents in vivo
Andrea Ziková, Radovan Kopp
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 263-274 | DOI: 10.11118/actaun200856050263
Cyanobacterial water blooms became a global problem/issue because beside a dramatic deterioration of water quality parameters they also produce cyanobacterial toxins being harmful for animals and humans. Cyanotoxins especially the most prominent one, microcystin-LR (MC-LR), are of major concern and they have been reported to cause even death of mammals following ingestion or ingurgitation due to hepatotoxic modes of action. The aim of the recent study is to summarize briefly the impacts of microcystin on laboratory rodents, mice and rats, being used as models for other mammals including human beings. Most experimental approaches used intraperitoneal...
SROVNÁNÍ VYBRANÝCH METOD DIGITÁLNÍ KLASIFIKACE DŘEVINNÉ SKLADBY Z LETECKÝCH SNÍMKŮ
Comparison of the tree species select classification methods from aerial photo
Martin Gabzdyl
Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 279-292 | DOI: 10.11118/actaun200856050279
This article describes a comparison of various programs for the automatic supervised classification used for identification of forest tree species representation from the aerial photographs. These programs were represented by American software Erdas Imagine 8.4, Czech products LuciaG 4.0 and TopoL DMT 6.014. The study displays a minor production forest area with proportion of four most frequently occurring tree species - spruce, larch, oak and ash in the research area of the forest region around Bystřice pod Hostýnem, the Czech Republic. For the reason of lower quality of spectrozonal photographs it was necessary to use some corrections; such as highlighting...