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Software and data qualityJ. VaníčekAgric. Econ. - Czech, 2006, 52(3):138-146 | DOI: 10.17221/5007-AGRICECON The paper presents new ideas in the International SQuaRE (Software Quality Requirements and Evaluation) standardisation research project, which concerns the development of a special branch of international standards for software quality. Data can be considered as an integral part of software. The current international standard and technical report of the ISO/IEC 9126, ISO/IEC 14598 series and ISO/IEC 12119 standard covert the whole software as an indivisible entity. However, such data sets as databases and data stores have a special character and need a different structure of quality characteristic. Therefore it was decided in the SQuaRE project create a special international standard for data quality. The main idea for this standard and the critical discussion of these ideas is presented in this paper. The main part of this contribution was presented on the conference Agricultural Perspectives XIV, aligned by Czech University of Agriculture in Prague, September 20 to 21, 2005. |
Information systems - tool for changing our futureE. Šilerová, K. LangAgric. Econ. - Czech, 2006, 52(10):447-450 | DOI: 10.17221/5049-AGRICECON The article deals with the usage of the information systems and expansion of the portals. In the part "results", there is elaborated a questionnaire applied on the agrarian sector. Today, the approach to the development of the information systems is oriented to the implementation of the portal solutions, which enables us a web access to the information and applications with an effective possibility of management and administration. Here, we are able to find typical user groups with quite specific information needs, who would find the specialized web portal very useful. This is because such kind of portal could offer them "everything at once and at one place", it means all of their needs would be satisfied immediately and users do not have to waste time with an information search at other places. |
Soybean (Glycine max) seed growth characteristics in response to light enrichment and shadingX. Liu, Herbert S.J., K. Baath, A.M. HashemiPlant Soil Environ., 2006, 52(4):178-185 | DOI: 10.17221/3363-PSE Seeds are the primary sinks for photosynthates during reproductive growth. Variation in light intercepted during and after seed initiation has been found a major environmental determinant of soybean [Glycine max(L.) Merrill] seed size. We investigated the influence of light enrichment and shading on seed growth rate, effective filling, cotyledon cell number, cell volume and endogenousABA concentrations of cotyledons/testas during seed filling of soybean. Evans, an indeterminate Group 0 soybean, was subjected to light reduction and enrichment treatments from the beginning of pod formation until final harvest for two years inMassachusetts. Higher rates of seed growth, greater seed dry weight, and higher cotyledon cell number were all observed with light enrichment. There was a reduction in seed growth rate and cotyledon cell number, along with a significant lowering of endogenousABA levels in testa and cotyledon with shade. The level ofABAin cotyledon during seed development was significantly correlated with seed growth rates only under shade treatments. Both the growth rates and seed filling duration were influenced by variation in light interception by the soybean canopy. The effects of varying light treatment on seed size, within one genotype, were most likely due to the differences in seed growth rate and cotyledon cell number. |
European Union: challenges and dilemmasA. RusekAgric. Econ. - Czech, 2006, 52(7):302-310 | DOI: 10.17221/5027-AGRICECON In the last two decades, the EU trails behind the USA in both the rate of economic growth and the rate of growth of productivity. In addition, in the next 25 years, the EU will experience demographic challenges in the form of the rapidly ageing population and a substantial increase in the dependency ratio. To answer these challenges, the EU needs economic policies which will facilitate the utilization of new technologies. To do that and to alleviate the growing pressures on the European social and economic model, the significant economic reforms are necessary. The key to that is the EU-wide integration of the financial sector. |
The effect of Lignofert organic fertilizer on formation and quality of head lettuce yieldM. Valšíková, A. VitekováHort. Sci. (Prague), 2006, 33(3):114-118 | DOI: 10.17221/3748-HORTSCI Nowadays soils for vegetable growing are poor in humus because the possibility of using stable dung is limited. The application of Lignofert organic carbonaceous fertilizer made of ground lignite seems to be a solution. It is intended as a fertilizer for the field or greenhouse growing of vegetables, as a component to composts, soil substrates and likewise. Lignofert effects on the formation of lettuce yield, weight of heads and NaNO3 content were studied in 2003 to 2005. Head lettuce grown in a greenhouse and in field conditions was a biological material. Average lettuce yields and average weight of heads in 2005 were statistically highly significantly higher in variants with Lignofert in comparison with the control variant grown in the greenhouse and in the field. The Lignofert effect on nitrate content in lettuce heads was not proved statistically. |
Regime and dynamics of soil moisture in forest ecosystems of Záhorská lowlandL. TužinskýJ. For. Sci., 2006, 52(3):108-117 | DOI: 10.17221/4492-JFS The paper describes the regime and dynamics of the soil moisture content of sandy soils in Záhorská lowland during different growing seasons. Research plots are situated near Kamenný mlyn, approximately 3 km from Plavecký Štvrtok and 8 km southward from the town of Malacky. Changes in the soil moisture content are described by soil moisture constants (MCC, PDA, WP) and its relation to atmospheric precipitation and to the character of undergrowth is shown. The low water-holding capacity of sandy soils and their high drainage together with dense root system do not allow the sufficient saturation of soil during the growing season. The low wilting point value (2%) leads to the consumption of all available water in the soil. The most frequent is the semiarid interval of soil moisture (PDA -WP) with reduced availability of water to plants (> pF 3.1). The arid interval (< WP) occurrence on hot summer days results in a decrease in transpiration and assimilation intensity of plants, their physiological weakening and premature fall of assimilation organs. |
Toxicity to honeybees of water guttation and dew collected from winter rape treated with Nurelle D®Mahmoud Abd-Allah Shawki, Dalibor Titěra, Jan Kazda, Jana Kohoutková, Vladimír TáborskýPlant Protect. Sci., 2006, 42(1):9-14 | DOI: 10.17221/2690-PPS The acute and chronic toxicity to honeybees, Apis mellifera of water guttation and dew collected from winter rape plants treated with the insecticide Nurelle D® (a.i. chlorpyriphos + cypermethrin) was investigated. Caged bees were fed on sugar syrup containing water guttation and dew for 24 h (acute toxicity test) and for 10 days (chronic toxicity test). Bee mortality and food consumption were determined daily. A contact toxicity test was performed within 24 h on bees kept in Petri dishes (10 bees per dish) lined with filter paper saturated with the test solution. The acute Nurelle D® contact and oral toxicity tests showed that the mortality of bees treated with water guttation and dew collected from the treated plants did not exceed 10%. A chronic toxicity test showed that adding contaminated water guttation and dew to the syrup caused an insignificant increase in bee mortality and reduced the syrup consumption significantly. The chlorpyriphos residue found in contaminated water guttation and dew were below the limit of detection (0.8 µg/kg) and the cypermethrin residue was below the detection levels. |
Role of talents in the development of agribusiness organisationsM. Horalíková, R. ZuzákAgric. Econ. - Czech, 2005, 51(6):265-270 | DOI: 10.17221/5106-AGRICECON Currently, the world of business is more and more dominated by companies which possess and know how to exploit their intangible resources, in particular the potential of their employees, to achieve competitiveness. The importance of learning organisations, knowledge organisations and corporate culture has been constantly growing. The article presents the outcomes of a survey carried out with the aim of identifying attitudes of managers of agribusiness organisations to talented people and the role of these people in gaining a competitive advantage. The survey has found that Czech agricultural enterprises are somewhat special in this area and that the existing conditions affect managers' approaches and distinguish them from other large companies in other industries. It has also shown that agricultural companies do not have the same opportunities as large companies to select and develop talented individuals, and therefore these activities should be carried out, to a large extent, by universities. |
Logistics in agricultural productionD. Vaněček, D. KalábAgric. Econ. - Czech, 2003, 49(9):439-443 | DOI: 10.17221/5429-AGRICECON In spite that the great importance of logistics in industry, business and other branches is generally acknowledged, this problem is not systematically investigated in agriculture. As a presumption of a detailed analysis, the knowledge of the volume and structure of the material flow is necessary. The authors have proposed their own methodological procedure which issues from technological indicators, published by the Ministry of Agriculture CR for individual plants and categories of animals and which makes possible a further classification of these data for enterprises with different level of farming. These published standards of the Ministry serve as basic stones and by means of their combination, the volume of material flow and its structure during one year periods is possible to calculate. The advantage of the proposed method is a fast finding out of necessary data and possibility of taking into account some specific conditions of the investigated enterprises. |
Winter wheat protection against diseases and pests in conventional programme of crop protection and in integrated pest managementOriginal PaperC. Jańczak, S. Pruszyński, P. BubniewiczPlant Protect. Sci., 2002, 38(10):221-226 | DOI: 10.17221/10359-PPS Results of researches carried out in 2000 and 2001 have demonstrated, that main factors determining yield of winterwheat are: agrotechnical measures, mainly proper choice of field, optimal nitrogen fertilization as well as choice ofcultivar well adapted to local climatic conditions. Chemical protection of winter wheat affects first of all stability ofyield. Regular inspections of fields with special account to present phytosanitary situation, thresholds of noxiousness andexpected development of disease and pest populations should decide on the need of chemical treatments. |
Fruit weight, firmness and soluble solids content during ripening of Karešova cv. sweet cherryJ. Blažková, I. Hlušičková, J. BlažekHort. Sci. (Prague), 2002, 29(3):92-98 | DOI: 10.17221/4470-HORTSCI Changes in fruit weight, firmness and soluble solids content during the ripening period of Karešova cv. Including relationships between these characteristics were studied in 1998-2001. These years differed from each other in the amount and distribution of rainfall and in the course of temperatures. The length of ripening period fluctuated from 14 to 21 days. An increase in average fruit weight during the ripening period was 0.1 g per day. The actual increase in fruit weight was in a close correlation with the amount of rainfall in a few previous days. After heavy rainfalls, above 40 mm, fruit weight increased by nearly 1 g within in a few days. In the course of the ripening period fruit firmness decreased from about 2.5 N at the beginning of the period to about 1.5 N at its end. This decrease seems to be mainly the function of time during ripening. However, a low correlation between the amount of rainfall in the previous days and the decrease in firmness was also found. This correlation could be connected with negative regression of fruit firmness on the weight of the fruit. In the more rainy years 1998 and 1999 these decreases in firmness were more significant than in the other two years. Soluble solids content (SSC) increased from about 12% Brix at the beginning of the period to about 16% at its end. There were also found positive correlations between the weight of fruits and SSC. Taking into account contributions of all studied factors and their changes a conclusion was drawn that Karešova cv. should be harvested within one week from the beginning of its ripening period. |
A statistical small-area method of estimation of spatial distribution of the tree damage degreeR. PodlaskiJ. For. Sci., 2003, 49(8):380-388 | DOI: 10.17221/4711-JFS The objectives of this study are to demonstrate a small-area method of estimation of the spatial distribution of the tree damage degree, and to initially verify it during the assessment of fir (Abies alba Mill.) and beech (Fagus sylvatica L.) vitality in the Świętokrzyski National Park. In order to estimate the degree of tree damage the classification based on the degree of defoliation, and assumed by the International Co-operative Programme on Assessment and Monitoring of Air Pollution Effects on Forests - ICP, was used. The tree damage degree is presented in P3 fields of the SINUS System of Information on Natural Environment. To estimate the spatial distribution of the tree damage degree an unrestricted simple random sampling scheme was used. During the initial verification of the presented method the total error as well as errors of the upper and lower intervals were analysed in two forest sections of the Świętokrzyski National Park, i.e. on the total area of 1,997.18 ha. The maximum total errors in individual P3 fields of the SINUS system for fir and beech amounted to 31.3%. The average errors (total, of upper and lower intervals) were lower than 25% for both tree species. The method presented in this paper can become a valuable complement to existing large-area methods of the tree damage degree estimation since it allows to determine the tree vitality in a whole forest district or national park, as well as in individual compartments or even subcompartments. |
Effect of climatic influences on the migrations of infective larvae of CyathostominaeI. Langrová, I. Jankovská, M. Borovský, T. FialaVet Med - Czech, 2003, 48(1):200 | DOI: 10.17221/5745-VETMED Migration to herbage of Cyathostominae from experimentally deposited fresh or incubated faecal samples containing a known number of cyathostome L3 was studied in the Czech Republicfor up to 1 year. It was found out that most larvae remained quite close to the faecal samples. Of all larvae recovered from herbage 89.18% were collected within 10 cm of the faeces. Temporal variation in the presence of Cyathostominae larvae on vegetation may account for poor recovery of Cyathostominae L3 in the field. A few infective larvae (0.05?2.74% of the larvae placed on the plot) were found as far as 30 cm from the faeces after 1 or 2 weeks. The number of larvae was significantly higher in June, with maximum recoveries of 4.97% (P < 0.05). Time of day was also significantly related to the number of L3 recovered, larval recovery was greater in the morning than at noontime, the highest number of L3 was observed at 8 am. Moisture and temperature were the most important weather factors associated with lateral larval migrations. There was a closer relation between the larval yields and monthly rainfall (r = 0.47) than between the larval recoveries and weekly rainfall (r = 0.23, r = 0.24). A significant amount of migration occurred during dew. An insignificant amount of migration occurred during dry weather. |
Price stabilization as a factor of competitiveness of agricultureL. GregaAgric. Econ. - Czech, 2002, 48(7):281-284 | DOI: 10.17221/5321-AGRICECON Price fluctuations make agriculture a risky business. High price fluctuation of agricultural commodities may have through its income effect a very unfavourable impact on the economic situation of agricultural subjects. In finding corresponding instruments of agricultural policy to stabilize prices and incomes, it is necessary to distinguish between various types of price changes. However, important question for conception of adequate price policy is how to protect against high price fluctuations and not to restrain function of price as a signal about market situation. Application of partial equilibrium analysis to evaluate impact of price stabilization policies is an adequate method, especially if price changes in the market do not cause significant price fluctuation in other markets. Using this methodological approach is possible to prove that price stabilization brings for common net benefit consumers and producers. However in practical application some additional aspects must be taken into account if dealing with stabilization of agricultural products prices. |
Jananese flowering cherriesReviewWybe Kuitert, Arie Peterse, Arie PeterseJ. For. Sci., 2002, 48(7):328 | DOI: 10.17221/11892-JFS The Japanese sato-zakura, literally "village cherries", represent perhaps the most popular subject of dendrology and ornamental horticulture. The authors rose to the occasion to write an extraordinary account of Japanese cherries and shed more light on a still confused group of these aristocratic flowering trees. Kuitert teaches at the Kyoto University of Art and Design while Peterse is a dedicated plant breeder and researcher of the Japanese flowering cherries. Rarely do professors have the time, or take the time, needed to solely write such a thoroughly prepared text. Both Dutchmen paid attention to detail, and the result is a well-written, high-quality product. |
Approach to comparing complex software implementation methodsI. Vrana, J. VránaAgric. Econ. - Czech, 2005, 51(2):84-92 | DOI: 10.17221/5081-AGRICECON Some of agriculture-food sector information systems are characterised by a high complexity and a large size. There are often many alternative solutions or technologies (implementation methods) and more then one possible way or approach to an information system design. Individual alternatives could considerably differ by their properties, e.g. costs of design of initial functionality, development and operational costs, run-time costs and technical parameters of the resulting information system (e.g. the access time). Unfortunately, existing metrics for quantification of this task usually do not deliver precise results but a rough estimate depending on many variable conditions. The paper will outline typical implementation methods and show approaches to assessment and comparison of certain types of properties of information systems for a computer support for management of large data systems, which use relational database. Authors presented part of these results also at the Agrarian Perspectives conference 2004 in the Applied Informatics session (Vrana I., Vrána J. 2004). |
The policy process on climate changeZ. Sarvašová, A. KaliszewskiJ. For. Sci., 2005, 51(3):108-114 | DOI: 10.17221/4549-JFS The United Nations Framework Convention on Climate Change accepted in 1992 at the Earth Summit in Rio de Janeiro provides principles and framework for cooperative international action on mitigating climate change. But it soon became clear that more radical targets were needed to encourage particular countries to reduce greenhouse gas emissions. In response, countries that have ratified the United Nation Framework Convention on Climate Change accepted the Kyoto Protocol in 1997. The rulebook for how the Kyoto Protocol will be implemented - the Marrakech Accord, was agreed in 2001. This paper describes political instruments and facilities of mitigating climate change by forestry proposed in those political documents. |
Tensions in land policy between EU-15 and the accession states of 2004F. GreifAgric. Econ. - Czech, 2005, 51(10):455-461 | DOI: 10.17221/5137-AGRICECON The ownership of land has always been the important precondition for lasting socio-economic situation and the development of the country. Despite that, there is a process of learning going on in practically all the new member countries, which are still learning that productive ability of the agriculture depends in a big degree on the stability of ownership of land and its tranquil farming. Despite many fundamental and substantial differences, we can say that hitherto development in land law was tremendous. But it also follows that significant social and economic divergences have not made full liberalisation of the land market possible without "yes, but". |
Prevalence of dental disorders in pet dogsM. Kyllar, K. WitterVet Med - Czech, 2005, 50(11):496-505 | DOI: 10.17221/5654-VETMED Oral disorders of the dog represent for veterinarians a medical challenge and an important field of interest from the economical point of view. Although many epidemiological studies on dental diseases in beagles bred under controlled conditions have been realized, information on frequency of these alterations in populations of pet dogs, especially in Central Europe, is far from complete. The aim of our study was to assess the prevalence of the most common oral diseases in dogs in a Czech urban region. A total number of 408 dogs, presented at a private Czech urban veterinary hospital for different reasons, were analyzed. Site specificity and severity of dental diseases were assessed using modified indexing systems. Dental alterations could be found in 348 out of 408 dogs (85.3%). The most frequent diseases were (i) periodontitis (60.0% of 408 dogs), (ii) calculus (61.3%), (iii) missing teeth (33.8%), and (iv) abnormal attrition (5.9%). Furthermore, single cases of caries, tumors and enamel hypoplasia could be observed. Periodontitis occurred preferentially in the upper jaw of small dogs and increased with age. The labial/buccal side of teeth was affected more severely than the lingual/palatinal side. Differences between left and right side could not be observed. Malocclusion and insufficient oral hygiene care seem to predispose to periodontitis. As periodontitis, dental calculus occurred preferentially in small dogs and increased with age. The prevalence of calculus formation did not differ between left and right side. However, the upper jaw showed a higher degree of affection than the mandible. On the labial/buccal side of the teeth, a thicker calculus layer could be observed than lingually/palatinally. Interestingly, the degree of calculus formation and of periodontitis did not correlate in all cases, supporting the hypothesis that supragingival calculus per se is not an irritant. The pattern of tooth loss was the same between left and right side and between upper and lower jaw. Most commonly, the first premolars were missing followed by incisors and other premolars and molars. Tooth loss for other reasons than periodontitis and single cases of tooth agenesis has not been detected in our study. (Abnormal) tooth wear was detected only in older dogs and affected mostly canines and premolars of large breeds. Age estimation based on dental attrition should be carried out with care, because tooth wear depends on keeping conditions and feeding of the dog. Our study confirmed the high prevalence of oral diseases in dogs. Veterinarians could improve the effectiveness of treatment concentrating their diagnostic efforts on age groups and types of teeth at highest risk, as assessed in this and other reports. |
Czech LETS (empirical study on local complementary currencies in the Czech Republic)L. ZagataAgric. Econ. - Czech, 2005, 51(6):271-278 | DOI: 10.17221/5107-AGRICECON The presented theoretical reflection of the institutionalization of money shows that the given features of money are always linked to certain social conditions. Nowadays there are visible several attempts to establish local currencies, which would work as a complement of national currencies and which be able to fulfill other functions than the purely economic ones. The circulation of the "own" currency brings all kinds of benefits to community members. The goal of this work is to elucidate in empirical perspective mechanism of the local currency systems operating in the Czech Republic. Results of the research show a peculiar form of the LETS, which tend to divert from the rather formalized trading systems known in the Western Europe. |
Two rapid diagnostic procedures for the identification of Campylobacter jejuni/coli in food matrixTomáš Jeleník, Zdeňka Šabatková, Kateřina Demnerová, Jarmila PazlarováCzech J. Food Sci., 2005, 23(3):121-125 | DOI: 10.17221/3381-CJFS Campylobacter species, in particular C. jejuni and C. coli, cause infections which vary in symptoms, ranging from asymptomatic to severe chronic illness. The only ISO method for the detection of Campylobacter spp. until now has been the cultivation by selective enrichment and distinct conditions of growth taking several days to complete. We compared the Singlepath® Campylobacter test which involved 24 h of enrichment in Bolton broth, with PCR-based identification. Chicken meat salad with mayonnaise was spiked with C. jejuni and C. coli and the detection limit was determined. PCR provided the same detection limit of 102 CFU/ml for both strains. The immunotest Singlepath® was positive with C. jejuni only, the quantity of cells being 103 CFU/ml. C. coli was undetectable by Singlepath®, even the concentration of 105 did not reveal a positive reaction. |
In sacco NDF degradability and mineral release from selected forages in the rumenZ. Čerešňáková, P. Fľak, M. Poláčiková, M. ChrenkováCzech J. Anim. Sci., 2005, 50(7):320-328 | DOI: 10.17221/4173-CJAS An in sacco technique was used to measure NDF degradability and release of Mg, Ca, Zn, Cu, Fe from six forages - lucerne hay from the 1st cut (LH1), from the 2nd cut (LH2), orchard grass (G), grass silage (GS), red clover silage treated with Feedtech (CSFT) and/or with Kofasil (CSKO). The forages differed in the content of NDF and minerals. There were large differences (P < 0.01) in element release in the rumen between experimental forages and the particular elements. The rate of release of elements was higher from LH1, LH2, CSFT,CSKO than from G and GS. The release of individual elements and NDF over all incubation times is very well expressed by cubic polynomials (R2> 0.9). Overall, across forages the release of mineral elements ranked as follows: Mg > Fe > Cu > Ca > Zn. The minimum and maximum disappeared portions of individual minerals from forages are as follows: Mg 74.7% from G and > 91.5% from LH1, Fe 29.7% from G and 99.9% from LH1 and LH2, Cu 64.3% from G and 99.8% from LH1 and LH2, Ca 28.4% from G and 75.4% from CSFT, Zn 12.0% from G and 38.2% from LH1, respectively. Calcium and zinc need a longer time for their maximum release. It can be concluded from the results of multiple regression analyses that only the Mg and Ca release is associated depending on NDF and time of observations, with a highly significant influence of forage on Zn and Cu. |
From timber management to forest management: an initial discussion on forest management evolutionM. S. IftekharJ. For. Sci., 2005, 51(9):412-429 | DOI: 10.17221/4576-JFS Forests have been subject to human intervention since the inception of human civilization. With enhanced knowledge, understanding and capacity humans exert an increasing pressure and influence on forests. Forests in general have undergone different ownership patterns. The requirements for forests have changed over time. The objectives of forest management are shifting from timber production to biodiversity conservation and nature protection. On the other hand, in many places the forests are dwindling due to the anthropic pressure. The management paradigms are changing in response to these triggering mechanisms. In this paper an attempt has been made to summarize the evolution of forest management practices and discuss some recent trends in forest management. |
Monitoring of regional development dynamics with use of process analysisM. Hrabánková, L. Svatošová, I. BoháčkováAgric. Econ. - Czech, 2005, 51(3):112-116 | DOI: 10.17221/5083-AGRICECON From the present course of solution of the project "Creation of diagnostic methods set for monitoring efficiency of support from the EU funds" knowledge, it resulted that the regional development potential, if you like the potential of regional development, is necessary to be perceived as a dynamic social-economic category, on which many influencing factors have an effect and is which in the region connected with space, in which many quantitative and qualitative processes take place. In the solved project, it is dealt with a complex conception of all factors influencing natural potential and processes connected with it, demographic, economic and social potential, and processes which work upon the change of this potential. On the base of the hitherto selected criteria, it has been possible to compare the social-economic development and economic efficiency of particular districts, resp. regions, and their following aggregation in the frame of regions of cohesion. |
Construction of a knowledge based portal for agribusinessJ. Havlíček, L. Dömeová, I. TicháAgric. Econ. - Czech, 2005, 51(11):495-502 | DOI: 10.17221/5144-AGRICECON Virtual portal (VIPO) is designed to provide users with a single-point access to information, and tools to support their decision-making. VIPO illustrates the best practice presented in terms of case studies coded along three dimensions: field, domain and objectives. The second major source of knowledge is based on software packages made available to users including tutor support. The third part of the portal provides useful links to the existing databases which have the potential to facilitate decision making in agribusiness. All three pillars of the VIPO are complemented by on-line consultancy services. |
Prediction of wheat milling characteristics by near-infrared reflectance spectroscopyJaroslav Blažek, Ondřej Jirsa, Marie HruškováCzech J. Food Sci., 2005, 23(4):145-151 | DOI: 10.17221/3384-CJFS The aim of this study was to explore the use of NIR spectroscopy of laboratory milled flour to predict the milling characteristics of wheat. Quantitative traits of the milling process of wheat were predicted by analyses of NIR spectra of six sets consisting of 94 samples. Reference data were obtained by grinding the samples on the laboratory mill Chopin CD1-auto (France), spectral data were measured on spectrograph NIRSystem 6500. Commercial spectral analysis software WINISI II was used to collect spectra, develop calibration equations and evaluate calibration performance. The quality of prediction was evaluated by coefficients of correlation between the measured and the predicted values from cross and independent validation. MPLS/PLS regression and ANN methods were used. A statistically significant dependence (at the probability level of 99%) was determined for all traits studied in the case of cross-validation. Satisfactory accuracy of the prediction models by independent validation was achieved only for semolina extraction rate, models for other characteristics did not show acceptable precision. |
Cathepsin involvement in muscle proteolysis in meat-type bullsS.J. Rosochacki, T. Sakowski, E. Juszczuk-Kubiak, A. Butarewicz, J. PołoszynowiczCzech J. Anim. Sci., 2005, 50(9):422-429 | DOI: 10.17221/4226-CJAS Measurements were done of some lysosomal proteolytic enzyme activities involved in skeletal muscle proteolysis of the masculus longissimus lumborum et thoracis muscle (MLLT) of bulls. Samples from the same region between the 11th and 13th vertebra were taken after slaughter from Limousin (n = 10), Hereford (n = 10), Charolais (n = 10), Angus (n = 11) and Simmental (n = 11) bulls about 15 months old fed complete diet ad libitum. The activity of cathepsin D was determined as pepstatin (cathepsin D inhibitor) sensitive activity (PSCatD) towards 1% haemoglobin. Pepstatin-insensitive acid (PIA) and leupeptin-insensitive (thiol proteinases inhibitor) acid (LIA) autolytic activities were measured in the presence of 1mM Mg++. MLLT was also analysed for RNA, DNA and protein variables. The data were processed by analysis of variance. The highest activities in PSCatD (P ≤ 0.05), AAA (P ≤ 0.01) and LIA (P ≤ 0.05) as well as percentage of inhibition by pepstatin in cathepsin D (P ≤ 0.01) were estimated in Angus bulls, and the lowest in Limousin ones. These breeds differed in the above-mentioned activities by 20.3, 21.1, 31.1 and 13.1%, respectively. RNA/g of tissue was highest in Hereford and lowest in Limousin bulls (by about 15.3%, P ≤ 0.01). Similar differences (14.3%) were between Charolais and Limousin (P ≤ 0.01). CPS (103 RNA/protein) was higher by 18.3% (P ≤ 0.01) in Charolais compared to the value in Simmental bulls; similar differences were between Hereford and Simmental (16.4%, P ≤ 0.01). The DNA concentration was highest in Hereford (by about 30%) compared to Charolais bulls. Protein/103DNA ratio (mg/mg) - FCS - was higher by 33.4% in Charolais compared toHereford; RNA/DNA ratio was higher by 40.2% in Charolais compared toLimousin bulls. These results indicate the fast turnover of proteins in the groups of examined bulls and it can be concluded that in hypertrophic MLLT of bulls an anabolic decrease in degradation occurred. |
Support of the use of agricultural land in less-favoured areas of the CRM. ŠtolbováAgric. Econ. - Czech, 2005, 51(5):221-224 | DOI: 10.17221/5099-AGRICECON Horizontal Rural Development Plan is one of the programme documents for taking advantage of the EAGGF - European Agricultural Guidance and Guarantee Fund. One of the measures are payments for farmers producing in less-favoured areas. The payments contribute to sustainable use of agricultural land, maintaining of land and support of sustainable agriculture in these areas. This contribution concerns the support for less favourable areas in the CR in 2004-2006 and analyses their impact on the use of land fund in confrontation with the proposed changes of the Regulation of the Commission on support for the development of countryside through European Agricultural Fund for Rural Development for next programme period 2007-2013. |
Comparison of organic matter digestibility determined by in vivo and in vitro methodsJ. Forejtová, F. Lád, J. Třináctý, M. Richter, L. Gruber, P. Doležal, P. Homolka, L. PavelekCzech J. Anim. Sci., 2005, 50(2):47-53 | DOI: 10.17221/3994-CJAS A total of 36 samples of feed - 19 samples of hays and 17 samples of silages were used for estimation of in vivo and in vitro digestibility. The organic matter digestibility (OMD) was estimated by in vivo and two in vitro techniques (method of Tilley and Terry and two-stage pepsin-cellulase method (Pepcel)). The regression equations were calculated from the results obtained in the experiment. Tilley and Terry method provided consistent results of OMD estimation for both the groups of roughages: in vivo OMD = 14.7 + 0.782 × [Tilley and Terry] (n = 18; R2 = 0.76); in vivo OMD = 36.3 + 0.513 × [Tilley and Terry] (n = 16; R2 = 0.75) for hays and silages, respectively. Different accuracy was found out in Pepcel method: in vivo OMD = 37.0 + 0.478 × [Pepcel] (n = 19; R2 = 0.49); in vivo OMD = 37.8 + 0.484 × [Pepcel] (n = 17; R2 = 0.87) for hays and silages, respectively. |
Oak mildew - possibilities of its controlF. SoukupJ. For. Sci., 2005, 51(5):195-202 | DOI: 10.17221/4590-JFS New possibilities of oak mildew (Microsphaera alphitoides) control were tested and compared with present methods. The results of three-year experiments in 6 localities (Cikar, Budkov, Planá nad Lužnicí, Vědomice, Voznice, Zadní Bor) clearly showed that the sulphur-based fungicides registered for the control of oak mildew (Sulikol K, Sulka) had a relatively good and stable effectiveness, and that two other newly tested preparations (Systhane 12 EC, Amistar) were even more effective when the percentage of infested plants did not exceed 2% (Systhane 12 EC) or 5% (Amistar) in any experimental locality. Their registration should be extended in this way. The biopreparations with fungicidal or fungistatic effects such as Supresivit, Polyversum and Ibefungin, known and used in forestry, showed that it was not possible to use them for oak mildew control, similar results were received in tentative testing of another preparation (PFR). Testing of preparations Bion 50 WG and Neem Triact 90 EC gave interesting and promising results. Besides their sufficient effectiveness in the control of oak infestation by the mildew, our experiments also indicated their generally positive influence on the health of plants; this could compensate their economic disadvantage compared to classical fungicides. |
