Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2020 (vol. 68), issue 4
Evaluation of the Level of Length of Eating Time, Chewing and Parameters of Daily Increased Activity Depending on the Breed, the Lactation Number and the Period of the Year
Radim Codl, Jaromír Ducháček, Jan Pytlík, Luděk Stádník, Mojmír Vacek, Marek Vrhel
Acta Univ. Agric. Silvic. Mendelianae Brun. 2020, 68(4), 659-667 | DOI: 10.11118/actaun202068040659 
Eating time, rumination and activity is affected by many factors. Evaluation of the parameters obtained from Vitalimeter 5P was performed on 719 dairy cows Czech fleckvieh cattle and Holstein cattle and their hybrids within one farm. Data collecting took place for one year. As part of a detailed evaluation using the GLM procedure, the lactation number, the period of the year and the pedigree (P < 0.001) had a significant effect on the time of rumination, eating, increased activity and the sum of activities. The highest values in all monitored parameters were reached by H 51-87. Within the effect of the lactation number was evident a certain discrepancy...
Comparison of Hydraulic Conductivity Values Obtained from Empirical Formulae and Laboratory Experiments
Mario Hala, Lubomír Petrula, Zakaraya Alhasan
Acta Univ. Agric. Silvic. Mendelianae Brun. 2020, 68(4), 669-678 | DOI: 10.11118/actaun202068040669
Hydraulic conductivity determination plays an essential role in the investigation of groundwater flow regime which can then influence many field problems such as pumping capabilities in the area, transport of contaminant or heat and soil internal erosion. Numerous equations based on dimensional analysis or experimental measurements have been published since the end of the 19th century for the determination of hydraulic conductivity. However, not all of these formulae are applicable for every material and all of them bring some uncertainty in the value of hydraulic conductivity. This paper contains a description of experimental research carried...
Micropropagation of Camptotheca Acuminata Decne (Nyssaceae) - Endangered Ornamental and Medicinal Tree
Lilyana Nacheva, Nataliya Dimitrova, Valeria Ivanova, Fuliang Cao, Zunling Zhu
Acta Univ. Agric. Silvic. Mendelianae Brun. 2020, 68(4), 679-686 | DOI: 10.11118/actaun202068040679
Camptotheca acuminata Decne (Nyssaceae) (happy tree, tree of life, cancer tree) is a rapidly growing deciduous and endangered tree endemic to east Tibet and southern China (Liu et al., 2002). C. acuminata is an ornamental tree with monopodial growth, beautiful leaves and shade- and cold- tolerant in their natural environment. Recently, its demand has grown rapidly due to secondary metabolites production like Camptothecin and its derivatives with anti cancer and antivirus activity. The aim of the present study was to develop an efficient protocol for in vitro micropropagation of this valuable plant. Different cultural...
Cations (Ca, Mg, Na, K) in Bottom Sediment of the Lower Silesian Dam Reservoir
Magdalena Senze, Monika Kowalska-Góralska, Katarzyna Czyż
Acta Univ. Agric. Silvic. Mendelianae Brun. 2020, 68(4), 687-698 | DOI: 10.11118/actaun202068040687
The study was conducted on the Słup reservoir and the Nysa Szalona river (Poland). The material was benthic water and sediments. The aim of the study was to evaluate accumulation of Ca, Mg, Na and K in the sediments. The assessment of studied elements accumulation was based on calculations of the cumulation factor in the sediment. On this basis, an attempt was made to assess the possible impact of the compounds deposited in the sediment on the organisms living in the reservoir and on the change in the composition of water which constitutes the basis for drinking water. It was found that the studied sediments are rich in Ca, Mg and K compounds but relatively...
Smart Pig Nutrition: Effect of Piglet Weaning Nutrition Strategy on Their Growth Ability, Survival and Economics
Manfred Schönleben, Joachim Mentschel, Sebastian Feser, Luboš Střelec, Klaus Klunker
Acta Univ. Agric. Silvic. Mendelianae Brun. 2020, 68(4), 699-705 | DOI: 10.11118/actaun202068040699
Modern high-performance swine genetics, such as Danish hybrid sows, can yield large litter sizes. Especially in the suckling phase, managing these large litters with low piglet losses is often a challenge. To support the modern highly prolific sows and litters, the use of pre-starters as suckling pig supplementary feed, including sufficient freshwater access, are nowadays good professional practices. Neonatal piglets especially profit from liquid supplemental feed via the possible higher absolute dry matter intake potential, in comparison to solid feed or without supplement. Various studies also indicate that supplying additional liquid feed to piglets...
Effect of a Fermented Mixture of Papaya Leaf and Seed Meal on Production Traits and Intestinal Ecology of the Indonesian Indigenous Crossbred Chickens
Sugiharto Sugiharto, Endang Widiastuti, Isroli Isroli, Hanny Indrat Wahyuni, Turrini Yudiarti
Acta Univ. Agric. Silvic. Mendelianae Brun. 2020, 68(4), 707-718 | DOI: 10.11118/actaun202068040707
The work investigated the impact of a fermented mixture of papaya leaf and seed meal (FERM) on production traits, biochemical indices, intestinal ecology and carcass proportion of the Indonesian indigenous crossbred chickens (ICC). A 300 day-old ICC were assigned to five groups and fed on starter (1-4 weeks) and finisher diets (5-8 weeks) containing corn, soybean (CONT) or diets containing 1% (FERM1), 2.5% (FERM25), 5% (FERM5) or 7.5% (FERM75) of FERM. On week 8, blood was collected from birds prior to slaughter. The increased levels of FERM linearly reduced (P < 0.05) feed conversion and feed cost per kg weight gain, and increased (P...
Analysis of Serious and Fatal Occupational Accidents Associated with Tractors in Agriculture and Forestry in the Czech Republic
Zuzana Valeriánová, Zdeněk Patočka
Acta Univ. Agric. Silvic. Mendelianae Brun. 2020, 68(4), 719-727 | DOI: 10.11118/actaun202068040719
Agriculture and forestry have traditionally been one of the most hazardous occupations for workers. In both these sectors the tractor is one of the most used machinery. From a total of 89 detected serious and fatal accidents with tractors in the Czech Republic between the years 2009 and 2018 were 72 serious and 17 fatal. All the accidents affected men (no woman was affected). Men around 56 with low practice length were most at risk of injury. Categories created by the State Labour Inspection Office of the Czech Republic assign exactly one category to each injury. The most common cause of the accident was poor or insufficiently estimated risk (in 62...
Modeling the Equilibrium Price of the Companies Listed in the Prague Stock Exchange
Florin Aliu, Adriana Knápková, Hoang Khang Tran, Bashkim Nurboja
Acta Univ. Agric. Silvic. Mendelianae Brun. 2020, 68(4), 731-739 | DOI: 10.11118/actaun202068040731
Valuation provides proper evidence on the financial situation of the firms. Incorrect valuation delivers wrong signals for the market participants and stands on the concepts of markets with information asymmetry. The study measures the estimated intrinsic value of the selected companies listed in the Prague Stock Exchange. Moreover, the results of the work observe influencing factors that deviate stock prices of the companies listed in the Prague Stock Exchange (PSE) from their estimated intrinsic value. Valuation techniques and Monte Carlo Simulation were employed to detain the estimated intrinsic of the selected companies from the Prague Stock Exchange....
Ethnobotanical Survey of Plants Used as Amulets Among the Banen Ethnic Group in Ndiki Sub-Division (Centre Region of Cameroon)
Madeleine Johnson, Evariste Fongnzossie
Acta Univ. Agric. Silvic. Mendelianae Brun. 2020, 68(4), 741-753 | DOI: 10.11118/actaun202068040741
An ethnobotanical survey was carried in Ndiki sub-division of the Central Region of Cameroon to collect information on the use of plants in the manufacture of amulets among the Banen ethnic group. Focus group discussions and interviews were carried out from 2004 to 2010 and from 2013 to 2015 with a total of 50 respondents (34 men and 16 female) to gather information about local names of plants used, type of management (wild/cultivated), availability (common, sporadic, rare), existing threats, part(s) used, preparation methods, effects of amulets, associated taboos/beliefs, etc. A total of 11 plant species were recorded as used as amulet. They include...
Impact of Digital Supported Process Workflow Optimization for Hip Joint Endoprosthesis Implantation on Hospital-Specific Process and Quality Ratios
Benjamin Lahmann, David Hampel
Acta Univ. Agric. Silvic. Mendelianae Brun. 2020, 68(4), 755-763 | DOI: 10.11118/actaun202068040755
Considering the continuous change within the German health care system, German hospitals are forced to realize efficiency gains and, at the same time, try to enhance their quality standards. Digital support systems in surgery rooms intend to improve operational efficiency and reduce failure quotas. A dataset with 383 hip joint endoprosthesis surgeries from a German hospital was analysed using statistical methods, among others logit model, odds ratio and ANCOVA. Results show that digitally supported surgery results in a shorter hospital stay time and reduces acute hemorrhagic anemia as a postoperative complication. Finally, it is possible to conclude...
Efficiency Comparison and Efficiency Development of the Metallurgical Industry in the EU: Parametric and Non-parametric Approaches
Michaela Staňková
Acta Univ. Agric. Silvic. Mendelianae Brun. 2020, 68(4), 765-774 | DOI: 10.11118/actaun202068040765
This article deals with the development of technical (production) efficiency in the metallurgical industry in EU countries with an emphasis on the situation in the Czech Republic. The efficiency of individual countries was estimated for the period from 1995 to 2015. The parametric stochastic frontier analysis method with different settings was chosen to estimate efficiency and the results were verified using a competitive non-parametric data envelopment analysis method. It was found that during the period under review, there was an average increase in efficiency in the metallurgical industry. The largest increase in efficiency (confirmed by all types...
The Impact of Trade Credit Investment on Manufacturing Firms' Profitability: Evidence from Vietnam
Duong Phuong Thao Pham, Thi Cam Ha Huynh
Acta Univ. Agric. Silvic. Mendelianae Brun. 2020, 68(4), 775-796 | DOI: 10.11118/actaun202068040775
The aim of this study is to examine the effect that trade credit investment has on firms' profitability. The characteristics of this relationship have not been dealt with in depth for manufacturing firms. We use panel data for a total of 227 Vietnamese publicly listed manufacturing firms for the period 2005-2017. Different econometric estimation techniques such as the feasible generalized least squares, fixed effects and random effects and different calculation of firm performance such as non market-based measure (return on assets) and market-based measure (Tobin's q) are employed to validate the consistent results. The robust results confirm a statistically...
Consumption Function in the Context of Cultural Affinity Zones
Terézia Vančová, Luboš Střelec
Acta Univ. Agric. Silvic. Mendelianae Brun. 2020, 68(4), 797-806 | DOI: 10.11118/actaun202068040797
Consumers' purchasing behaviour is affected at the microeconomic level by personal, psychological, situational, social and cultural factors. Beside the political and economic factors, culture with its beliefs, values, attitudes and traditions plays a substantial role also at the macroeconomic level in affecting national aggregate consumption, despite the recent phenomenon of globalisation. There is an evidence of excess sensitivity in European countries, which confirms that income change is a good predictor of consumption change. Clusters of European countries constructed according to single consumption functions correspond to some extent to the cultural...