Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2019 (vol. 67), issue 6
Towards an Understanding of Specific Response of Metallothionein (Sub)Isoforms to Exposure to Platinum-Based Anticancer Drugs
Sofie Blížkovská
Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(6), 1407-1417 | DOI: 10.11118/actaun201967061407 
Metallothioneins (MTs) are small cysteine-rich proteins involved in a number of pathophysiological processes. Particularly their linkage to cancer processes has been vastly studied and it is well known that MTs can inactivate metal-based cytostatics or scavenge free radicals. These processes result in pronounced chemoresistance and a poor prognosis for patients. Despite this knowledge, involvement of specific (sub)isoforms into this phenomenon requires further elucidation. Our results identified CisPt as the cytostatic which provoked the highest cell death exp followed by CarboPt and OxaliPt. Fluorescence microscopy visualized the oxidative cell stress....
The Analysis of Reproduction in Population of the Slovak Spotted Dairy Cows
Jozef Bujko, Juraj Candrák, Peter Strapák, Július Žitný, Cyril Hrnčár, Anton Kováčik
Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(6), 1419-1426 | DOI: 10.11118/actaun201967061419
The aim of study was to analyse the reproduction and factors affecting on reproduction traits of dairy cows in population of Slovak Spotted cattle from 2007 to 2016 the results for 37,274 dairy cows: days to first service (DFS), days open (DO), number of inseminations per conception (NIC), age of first calving (AFC) and calving interval (CI). The basic statistical analysis were analysed using the SAS version 9.3. For the actual computation a linear models with fixed effects was used: For the actual computation a linear models with fixed effects was used: yijklm = μ + HYSi + BTj+ Fk+ Bl +eijklm....
Productivity of Krivovir Strain and its Importance on Sheep Farming in Republic of Serbia
Bogdan Cekic, Dragana Ruzic-Muslic, Nevena Maksimovic, Violeta Caro Petrovic, Ivan Cosic, Zorica Bijelic, Aleksandar Stanojković
Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(6), 1427-1431 | DOI: 10.11118/actaun201967061427
The area of central Serbia is very suitable for sheep production, because of it's hilly and mountainous configuration. Such area is rich in pastures for ruminants. In the territory of central Serbia, representative of autochthonous (indigenous) sheep breeds is pramenka (zackel) with its differentiated strains: Sjenica strain, Svrljig strain, Krivovir strain, Karakachan strain, Pirot strain, Lipa strain and Bardoka (White Metohian strain). Aim of this study was to investigate Krivovir strain: number of controlled heads and their part in total sheep population, their productivity parameters and milk parameters. In this study, total of 789 adult animals...
Anaerobic Acidification of Coconut Water Waste by Lactobacillus acidophilus Culture for Biotechnological Production of Lactic Acid
Darwin, Ulfa Triovanta, Ridho Rinaldi, Atmadian Pratama
Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(6), 1433-1440 | DOI: 10.11118/actaun201967061433
The biotechnological production of lactic acid could be carried out via anaerobic acidification process. In order to achieve an optimal production of lactic acid, the role of inoculum would be essential. The current study aimed to investigate as well as evaluate the effect of inoculum concentration on the anaerobic acidification of coconut water waste for the production of lactic acid. Results showed that the addition of 20% inoculums to the reactor fermenting coconut water waste was sufficient for the optimal production of lactic acid. In the batch process anaerobic acidification of coconut water waste inoculated with 20% inoculums of Lactobacillus...
Sheep Shearing Impact on Garutian Sheep Physiological Responses
Hudiana Hernawan
Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(6), 1441-1445 | DOI: 10.11118/actaun201967061441
This study aims to determine the sheep' physiological response as a result of shearing by evaluating heat tolerance coefficient. The observed measurements of heat tolerance coefficient were rectal temperature and respiratory rate. The results of this experimental method showed that the average rectal temperature of all Garut sheep groups ranged from 38.6 ℃-39.0 ℃, while the average respiratory rate of both sheep groups was 35.1 breaths per minute to 45.1 breaths per minute. Most of the Garut sheep groups during the study have 2.5 to 3.0 heat tolerance coefficient in which the recommended normal animal heat tolerance coefficient is 2....
Detection of Autosomal Hemizygous Regions in the Fleckvieh Population Based on SNP-chip Data and Parent Offspring Pairs
Judith Himmelbauer, Gábor Mészáros, Johann Sölkner
Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(6), 1447-1452 | DOI: 10.11118/actaun201967061447
A Copy Number Variation (CNV) is a loss or a gain in the DNA sequence, ranging from 50 basepairs to a few megabasepairs. Most studies use whole genome sequencing data to detect deletions. Due to the fact that SNP-chip data is more commonly used in livestock, especially in cattle, the detection of deletions based on SNP-chip data is of interest. In the present study an approach based on SNP chip data and the analysis of Mendelian mismatches in parent-offspring-pairs was developed. Use was made of the fact that deletions appear as homozygous after SNP Chip genotyping. For some SNPs with high number of mismatches, the inheritance of the mismatches could...
Micropropagation of Incarvillea delavayi Bureau et Franchet (Bignoniaceae)
Tomáš Hovorka, Iva Viehmannová, Jan Vitamvas, Petra Hlásná Čepková, Eloy Fernández
Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(6), 1453-1456 | DOI: 10.11118/actaun201967061453
A simple and efficient protocol for micropropagation of Incarvillea delavayi (Bignoniaceae), an ornamental plant from China, was developed in this study. As initial plant material, adventitious shoots were used. Effect of 0, 0.1, 0.5 and 1 mg l-1 BAP in half-strength MS medium on shoot multiplication was studied. For rooting, 0.1 and 0.3 mg l-1 NAA were tested. The highest shoot number (8.60 ± 0.78 shoots per explant) and plant height (5.50 ± 0.31 cm) were obtained on medium supplemented with 1 mg l-1 BAP. The shoots optimally rooted on medium with addition of 0.3 mg l-1 NAA (8.48 ±...
Level of Inbreeding in Norik of Muran Horse: Pedigree vs. Genomic Data
Radovan Kasarda, Nina Moravčíková, Ondrej Kadlečík, Anna Trakovická, Marko Halo, Juraj Candrák
Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(6), 1457-1463 | DOI: 10.11118/actaun201967061457
The objective of this study was to analyse the level of pedigree and genomic inbreeding in a herd of the Norik of Muran horses. The pedigree file included 1374 animals (603 stallions and 771 mares), while the reference population consisted of animals that were genotyped by using 70k SNP platform (n = 25). The trend of pedigree inbreeding was expressed as the probability that an animal has two identical alleles by descent according to classical formulas. The trend of genomic inbreeding was derived from the distribution of runs of homozygosity (ROHs) with various length in the genome based on the assumption that these regions reflect the autozygosity...
Models and Algorithms of Adaptive Animal Flow Control in Rotary Milking Parlors
Vladimir V. Kirsanov, Andrey Y. Izmaylov, Yakov P. Lobachevsky, Oksana A. Tareeva, Sergey N. Strebulyaev, Roman F. Filonov
Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(6), 1465-1484 | DOI: 10.11118/actaun201967061465
The study addresses the influence of milking duration of individual cows on the performance of conveyor-like rotary milking parlors and seeks to optimize their operation parameters and operating modes.The observational experiment was conducted in the Zhdanovsky Farm in Nizhny Novgorod Region, Russia. The dairy farm had a herd of 600 cows, divided into 10 groups by physiological characters and milk yield, and operated a 36 point milking parlor. Distribution of milking time of individual cows was studied using statistical analysis methods. The cyclogram of parlor operation and the functional connection of main parameters were analyzed using Maple...
Routine Determination of Milk Fat Composition for Nutritional and Technological Purposes
Eva Samková, Oto Hanuš, Jiří Špička, Lenka Pecová, Jan Bedrníček, Pavel Kopunecz, Zdeňka Klímová, Jaroslav Kopecký
Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(6), 1485-1491 | DOI: 10.11118/actaun201967061485
78 individual milk samples (IS) were taken in the Czech Fleckvieh and Holstein dairy cow herds and 33 bulk milk samples (BS) were taken in 13 Holstein dairy cow herds to compare two methods for the determination of fatty acids (FAs) - routine/indirect (infrared (IR) spectroscopy, MIR-FT) and reference/direct (gas chromatography, GC). The IS results show that the fatty acids C16:0 and C18:1 and the group of saturated (SFA) and unsaturated (UFA) FAs can be determined using routine method with a relatively high reliability (correlations (r) 0.7543, 0.7607, 0.8424 and 0.9492; P < 0.001). In case of polyunsaturated FAs is the r lower (0.2891; P <...
Inspection of the Cogwheel Using Virtual Instrumentation
Michaela Šidiková, Radek Martinek, Martina Ládrová, René Jaroš, Petr Bilík, Zdeněk Macháček, Lukas Snajdr, Vlastimil Slaný, Ján Jobbágy
Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(6), 1493-1501 | DOI: 10.11118/actaun201967061493
This paper deals with use of machine vision for the needs of automated inspections based on virtual instrumentation using a visualization tool named Vision Builder for Automated Inspection (VBAI) - National Instruments (NI). An application for camera tests of dimensions, shapes and presence is designed in experimental parts. This work is focused on the control, detection and distribution properties of internal holes.
Study of Some Mechanisms of Tolerance and Avoidance of Water Deficit in Barley (Hordeum vulgare L.)
Mimouna Zerrouki, Zineb Regagba, Ahmed Adda
Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(6), 1503-1512 | DOI: 10.11118/actaun201967061503
Some mechanisms of drought tolerance and avoidance have been studied in eight barley genotypes. These include three local cultivars (Ttichedrett, Beldi, Saida) and five introduced (Malouh, Seg09, Mari29, Awblack, Beecher) which were grown under three different water supply (100% FC, 60% FC, 30% FC). The increase in intensity of the water deficit reduces differently the relative water content among tested genotypes. Thus, in the treatment of 60% FC, this reduction varies between 1% (Beldi) and 6% (Tichedrett, Beecher), while in the lot of 30% FC it reaches the limits of 3% (Beldi) and 18% (Seg09). The results show that plants grown under water deficit...
Determinants of the Dividend Payout Policy of Stock Companies within the European Union
Patrick Arndt, Zuzana Kučerová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(6), 1515-1524 | DOI: 10.11118/actaun201967061515
The problem-field dividend payout policy is a very complex issue. Particular within the low-interest phase in Europe, the significance of this issue is growing for all investors, equal to whether private or institutional investors. The aim of this study is to research the European area to provide a contribution to a region, which, unfortunately, has given sparse attention in the past. In order to ensure the relevance for this exploration, the major European stock index Euro Stoxx 600 has been used. The results of the multiple linear regression show the unequal dividend distribution between stock companies from the industrial sector and the service...
Factors of Employee Engagement at the Workplace. Do Years of Service Count?
Roxana Hinzmann, Martina Rašticová, Jakub Šácha
Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(6), 1525-1533 | DOI: 10.11118/actaun201967061525
This article deals with employee engagement in SMEs when the employee's years of service are taken into consideration. The aim of the paper is to show if seniority influences engagement and if there are further factors that have major impact on employee engagement. To fulfill the aim quantitative methodology was applied. It is based on the analysis of data that derives from an engagement survey that was conducted in 2017 with 70 SMEs globally that belong to the mechanical engineering industry. The sample consists of 5,078 employees that participated in the engagement survey. The survey was standardized based on the engagement model from Aon Hewitt...
Data Envelopment Analysis Models in Non-Homogeneous Environment
Josef Jablonský
Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(6), 1535-1540 | DOI: 10.11118/actaun201967061535
Data envelopment analysis (DEA) is a non-parametric method that is widely used for relative efficiency and performance evaluation of the set of decision-making units (DMUs). It is based on maximization of a weighted sum of outputs produced by the unit under evaluation divided by the weighted sum of inputs of the same unit, and the assumption that this ratio for all other units has to be lower or equal to 1. An important assumption for applications of DEA models is the homogeneity of the units. Unfortunately, the homogeneity assumption is not fulfilled in many real applications. The paper deals with the analysis of efficiency using DEA models in the...
Chatbots for Enterprises: Outlook
Pavel Kostelník, Ivo Pisařovic, Mikuláš Muroň, František Dařena, David Procházka
Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(6), 1541-1550 | DOI: 10.11118/actaun201967061541
Chatbots are going to be the main tool for automated conversations with customers. Still, there is no consistent methodology for choosing a suitable chatbot platform for a particular business. This paper proposes a new method for chatbot platform evaluation. To describe the current state of chatbot platforms, two high-level approaches to chatbot platform design are discussed and compared. WYSIWYG platforms aim to simplicity but may lack some advanced features. All-purpose chatbot platforms require extensive technical skills and are more expensive but give their users more freedom in chatbot design. We provide an evaluation of six major chatbot solutions....
Qualified Electronic Signature - eIDAS Striking Czech Public Sector Bodies
Radka MacGregor Pelikánová, Eva Daniela Cvik, Robert MacGregor
Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(6), 1551-1560 | DOI: 10.11118/actaun201967061551
Electronic IDentification, Authentication and trust Services ("eIDAS") is a standardized system for trustworthiness, effectiveness and efficiency. Since 2018, Czech public sector bodies have to use qualified electronic signatures when officially acting via electronic documents. This calls for a pioneering study entailing three purposes: (i) to identify provisions set by the EU law and Czech law of this duty and to interpret them, (ii) to study and assess how this duty is materialized and observed while using a pioneering Czech micro case study and (iii) to discuss and compare the yielded results with the status quo in other EU member states....
How Change in Industry Mix Can Improve the Financial Performance of Regional Economies: Evidence from the Portfolio Approach
Marina Malkina
Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(6), 1561-1575 | DOI: 10.11118/actaun201967061561
The aim of the study is to adapt the portfolio approach to optimization of the industrial structures of regional economies and to assess its results. The research is based on data of the Russian regions and federal districts in 2004-2016. The ratio of a balanced financial result to gross regional product referred to as financial return, and its volatility, called financial risk, were used as target parameters of regional economies. The application of the portfolio approach allowed us to evaluate financial return and risk in the regions and districts and decompose them by industries. Further, we solved three optimization problems: maximization of financial...
Assessing Web Surface Credibility by Generation Y: A Q Methodological Study
Stanislav Mokrý
Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(6), 1577-1585 | DOI: 10.11118/actaun201967061577
Online marketing includes a variety of activities. Website presentation is one of the most striking. For many business providers it is vital to have a web-site and therefore there are currently more than 1.8 billion websites on the Internet. This situation has an impact on people who access the sites in terms of problems of decision making and confidence in the credibility of the website. This article deals with so-called surface credibility and analyses research data using the Q-method. The research was conducted with 70 respondents from generation Y. 40 anonymized web pages were used as sorted variables. The web pages were divided into 8 categories:...
The Determinants of Capital Structure: New Evidence from Listed Companies in Vietnam
Phuong Dung Thi Nguyen, Thanh Nhan Thi Do, Michael Joseph Dempsey
Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(6), 1587-1595 | DOI: 10.11118/actaun201967061587
This study examines the factors which affect the capital structure of 608 non-financial firms in Vietnam during the period 2009-2017. Our findings indicate that companies with more tangible assets prefer longer term to shorter term debts while larger companies tend to borrow more to finance their activities. Furthermore, companies with high profit and high growth in Vietnam are able to opt for alternative options for raising capital in addition to borrowing. Overall, we recommend that capital structures in Vietnamese firms can be understood within a framework of the pecking order theory. Interestingly, audit reputation is the single considered determinant...
Predicting Volatility and Dynamic Relation Between Stock Market, Exchange Rate and Select Commodities
Saif Siddiqui, Preeti Roy
Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(6), 1597-1611 | DOI: 10.11118/actaun201967061597
Commodities play a vital role in the development of emerging economies, like India. From this perspective, the study presents dynamic correlation in the prices of gold, crude oil, exchange rate and Indian stock market from April 01, 2014 to March 28, 2018. VARMA-BEKK-GARCH model is estimated for return and volatility spillovers across markets. Bidirectional returns spillover was found between Nifty and WTI and WTI and Gold pair. Whereas the bidirectional volatility spillover between Nifty and Gold pair. From the DCC-GARCH correlational analysis, Gold was found to be effective hedging commodity for Indian stock investors than Crude Oil. The asymmetric...
The Czech Agrarian Trade Comparative Advantages Distribution Based on Value and Volume Approach
Luboš Smutka, Mansoor Maitah, Miroslav Svatoš
Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(6), 1613-1625 | DOI: 10.11118/actaun201967061613
In the last two decades, the Czech agrarian trade has undergone a very significant transformation. It had been considerably influenced by several dynamically developing factors, which originate not only in the area of economics, but also within the political and social sphere.The objective of this paper is to identify the roots of Czech agrarian trade competitiveness in relation to EU and non-EU countries. The results of comparative advantages analyses are discussed in relation to Czech agrarian trade nominal value and volume performance. The paper identifies the set of items when trade performance is induced by increasing volume (increasing exports...
The Relationship Between Work Engagement of Different Generations and Mobile Learning
Gita Statnickė, Asta Savanevičienė, Ignas Šakys
Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(6), 1627-1642 | DOI: 10.11118/actaun201967061627
As regards work engagement, different generations are affected by different factors. The aim of this paper is to determine whether there is a relationship between work engagement and mobile learning and whether there are significant variances between work engagement and mobile learning among different generational cohorts. Methods: Quantitative research was performed using "Individual Innovativeness Scale" developed by Hurt, Joseph and Cook (1977) and "The Mobile Learning Scale (MBC)", formed by Fatima, Ghandforoush, Khan and Masico (2017), applying the Technology Acceptance Model (TAM). The research included 231 representatives of different generations...
The Analysis of Strategy Types of the Renewable Energy Sector
Adam Sulich, Adam Grudziński
Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(6), 1643-1651 | DOI: 10.11118/actaun201967061643
Environmental goals can be essential for the realization of modern organization strategies, especially in the case of renewable energy sector company's development in Poland. The aim of this article is to discover different strategies formulated by Polish energy supply companies as a result of the green management. The tools to analyse this type of management and to indicate the common direction of undertaken activities are the SWOT analysis and the Hellwig's taxonometric method. These common points can be described by some factors which are related to the creation of green jobs and the reduction of environmental impact. This analytical study explains...
The Excess Smoothness and Sensitivity of Consumption in the V4 Countries
Terézia Vančová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(6), 1653-1663 | DOI: 10.11118/actaun201967061653
This paper contributes to the debate on the Permanent Income Hypothesis (PIH) and excess consumption smoothness and sensitivity in the context of conditions in the V4 countries. This paper also shows results contrary to the belief of the Permanent Income Hypothesis/Random Walk Hypothesis that the change in consumption is an innovation which is not predictable by lagged saving or lagged income change. The paper tests the implication of the Permanent Income Hypothesis/Random Walk Hypothesis, using quarterly aggregate data for 1995-2017 in the V4 countries. A vector autoregression for saving and changes in disposable income is used to generate a forecast...
Comparison Between Data Envelopment Analysis Models with Penalties
Petra Zýková
Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(6), 1665-1669 | DOI: 10.11118/actaun201967061665
The paper deals with Data Envelopment Analysis (DEA) models with advanced voting systems for ranking of candidates with penalties. The main aims of the system are to find a general winner and ranking of all candidates. Every voter gives the ranking of the first t-candidates and can give penalties to candidates who he/she surely does not want to vote for. Advanced voting systems are being used based on the use of data envelopment analysis models. The original contribution of the paper consists in the formulation of a new DEA/AR model with penalties. This model is derived from the DEA/AR model with penalties. The proposed models are illustrated on a...
Digital Transformation Maturity: A Systematic Review of Literature
Roman Teichert
Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(6), 1673-1687 | DOI: 10.11118/actaun201967061673
The goal of this paper is to present contemporary developments in the field of digital maturity models. By conducting a systematic literature review finally 24 relevant studies including 22 different models were identified and various characteristics of different digital maturity models were extracted. Focus was placed on the dimensions used to measure digital maturity in different model approaches. Special light was shed on organizational culture and to what extent it is represented in the models. Among other things, the findings indicate, that dimensions applied in various models can be very different and that just a few models incorporate transformational...