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Results 721 to 750 of 1498:

Change of selected antioxidant parameters of red wines during maturationFood Technology and Economy, Engineering and Physical Properties

Ján Mezey, Peter Czako, Ivana Mezeyová, Daniel Bajčan, Radoslav Kobolka

Czech J. Food Sci., 2016, 34(4):356-361 | DOI: 10.17221/517/2015-CJFS

The effects of red wine maturation on the contents of selected parameters of bioactive compounds in wine were determined. Samples of Alibernet, Cabernet Sauvignon, and Torysa wines were studied by spectrophotometric analysis after 3, 7, 11, 19, and 28 months of aging and the selected parameter content was statistically evaluated. Statistically highly significant changes in total polyphenol content, total anthocyanin content, antioxidant activity, and wine colour density were found depending on the aging according to the used statistical analyses. The obtained results can be used for the optimisation of the wine aging process and they allow producers to time the optimal date of wine release onto the market, depending on the desired content parameters.

Monitoring of selected emissions of internal combustion engineOriginal Paper

M. Králik, J. Jablonický, Z. Tkáč, Ľ. Hujo, D. Uhrinová, J. Kosiba, J. Tulik, R. Záhorská

Res. Agr. Eng., 2016, 62(10):S66-S70 | DOI: 10.17221/72/2015-RAE

The paper deals with the possibility of appropriate measurement and evaluation of emissions of nitrogen oxides. Development of exhaust systems which captures the solid particles emitted from engine, lost an objective assessment of the emission status of the diesel engine of agricultural tractor. Therefore, it is necessary to find a new method of measuring and quantifying the emission state of the diesel engine by measuring emissions, which should be economic and time-saving, but especially universal and sufficiently precise. The selected method should also provide sufficient information on such emissions that are subject to approval but they are not controlled during periodic checks.

Adaptation strategies for the Greek agricultural cooperatives during the economic crisisOriginal Paper

Achilleas KONTOGEORGOS, Fotios CHATZITHEODORIDIS, Efstratios LOIZOU

Agric. Econ. - Czech, 2016, 62(1):26-34 | DOI: 10.17221/22/2015-AGRICECON

Because of the Greek economic crisis, almost all businesses are facing difficult times with severe consequences for employment and the whole economy. Responding to the economic crisis, the companies cut off investments, wages and reduced personnel. However, the companies have to adapt their business strategies to cope with the crisis. This paper conducts a strategic assessment of the Greek agricultural cooperatives during the first half of 2013 using in-depth interviews with cooperative executives in order to illustrate how they have responded to the crisis and also to investigate their strategic options for the upcoming period. The results of the analysis show that agricultural cooperatives have chosen the retrenchment and cost-cutting strategies by restraining their activities while they appear eager to export their production. In addition, the cash shortage forced them to count exclusively on their members to finance any new economic activity. According to the cooperatives' executives, their adaption strategies exclude abandoning the activities and selling the equipment and their real estate properties, while they involve exports, the experienced personnel and marketing investments. These results could provide helpful directions not only for the agricultural cooperatives' management boards but also for the food industry businesses operating under a severe economic situation such as the present Greek economic crisis.

The assessment of forestry companies in the Czech Republic with focus on profitabilityOriginal Paper

M. Levá, H. Čermáková, M. Stárová, H. Vostrovská

J. For. Sci., 2016, 62(3):116-125 | DOI: 10.17221/88/2015-JFS

The paper deals with the evaluation of economy of forestry companies. The evaluation stems from the results of economic analyses of enterprises that are further monitored in the context of forestry and development of economic financial ratios of evaluated companies. Furthermore, the evaluation is based on real possibilities of companies stemming from resources which they have at their disposal and on the facts that occurred in the selected companies in the monitored period. The development of important factors influencing the whole branch of forestry and their real state are introduced in the first part of the paper. After that, methods used in financial analysis of enterprises are described. The fact that forest land in the Czech Republic covered 2.66 million hectares in 2014 and its proportion in the total area of the country is 34% adds importance to the topic (Czech Statistical Yearbook 2015).

Pneumatosis coli in a dog - a serial radiographic study: a case reportCase Report

T.S. Hwang, Y.M. Yoon, S.A. Noh, D.I. Jung, S.C. Yeon, H.C. Lee

Vet Med - Czech, 2016, 61(7):404-408 | DOI: 10.17221/255/2015-VETMED

A 12-year-old intact female poodle was presented with a history of an acute episode of tenesmus and passage of ribbon-shaped stools. Anaemia, leucocytosis, hypoalbuminaemia, hyperglycaemia, and elevated ALP were found. Faecal floatation and wet mount preparation were negative for parasites. Anaerobic faecal culture resulted in a heavy growth of Clostridium. Survey abdominal radiographs revealed extensive intramural emphysema of colon and rectum. Ultrasonography of the abdomen revealed bright echoes within the layers of the colon wall, confirming the accumulation of intramural gas. Abdominal computed tomography revealed extraluminal gas tracking along the colon and the rectum. Based on the radiographic, ultrasonographic, and computed tomographic findings, the present case was diagnosed as pneumatosis coli with an underlying cause of bacterial overgrowth. The patient was treated with antibiotics for seventeen days. Clinical signs were resolved after three days of treatment. Decreased intramural gas accumulation was evident during radiography of the abdomen performed at fourteen days after the initial evaluation. Therefore, pneumatosis coli should be considered when a dog is presented with clinical signs of colitis.

Medicinal plants of the family Lamiaceae as functional foods - a reviewReview

Klaudija Carović-Stanko, Marko Petek, Martina Grdiša, Jasna Pintar, Dalibor Bedeković, Mirjana Herak Ćustić, Zlatko Satovic

Czech J. Food Sci., 2016, 34(5):377-390 | DOI: 10.17221/504/2015-CJFS

Historically, species of the family Lamiaceae have enjoyed a rich tradition of use for flavouring, food preservation, and medicinal purposes, due to both their curative and their preventive properties. It is well known that each species has a special, complex mixture of bioactive compounds in which each component contributes to its overall bioactivity. Their value lays in the production of a wide range of secondary metabolites with potent antibacterial, antioxidant, anti-inflammatory, antimicrobial, antiviral, and anticancer activities. This review focuses on the Lamiaceae species and their secondary metabolites encompassing a wide array of beneficial functions and their applicability as sources of functional foods. It could help in addressing specific consumer needs as healthy diet is a part of the lifestyle that maintains or improves overall health.

Forest certification as a tool to support sustainable development in forest managementOriginal Paper

A. Mikulková, M. Hájek, M. Štěpánková, M. Ševčík

J. For. Sci., 2015, 61(8):359-368 | DOI: 10.17221/16/2015-JFS

The concept of sustainable development is currently known and used in many contexts across a wide range of industries. Nevertheless, specific approaches to achieving the strategy of sustainability can be found in the individual sectors. The beginnings of sustainable management in forestry go back to the mid-18th century. Currently, certification systems contribute to sustainable behaviour in forests. In the Czech Republic, this concerns in particular PEFC and FSC certification systems. Both these certification systems include two different processes, forest management certification and chain of custody certification, i.e. including the wood-processing companies, where only certified wood must strictly be used. This article aims to evaluate the importance of certification for sustainable development in forestry. Given the clear superiority of the PEFC system in the Czech Republic, this paper focuses on the potential benefits for PEFC certificate holders. To determine the benefits of PEFC certification for sustainable development, a questionnaire survey was chosen. Assessment of the benefits for sustainable development depends on the subjective assessment of certification holders. The results suggest that the beneficial effect on sustainable development in forest management is clear in the forest property area of over 500 ha.

Maternal immunity induced by inactivated S. Typhimurium vaccine is less protective to S. Derby challenge than to S. Typhimurium challenge in suckling pigletsOriginal Paper

J. Gebauer, A. Osvaldova, H. Kudlackova, M. Maceckova, F. Sisak, H. Havlickova, P. Ondrackova, L. Leva, M. Faldyna, J. Matiasovic

Vet Med - Czech, 2016, 61(1):23-27 | DOI: 10.17221/8679-VETMED

Salmonella enterica serovar Typhimurium and Salmonella enterica serovar Derby are the most common serovars of Salmonella enterica ssp. enterica found in pigs in Europe. We previously observed that suckling piglets of sows vaccinated with an S. Typhimurium-based inactivated vaccine are protected against homologous strain challenge. To develop this vaccine for commercial use, potential crossprotectivity of this vaccine to challenge with S. Derby was tested. Two sows were vaccinated with an S. Typhimurium-based inactivated vaccine while two other sows remained serologically negative. Four-day-old suckling piglets from both groups were orally challenged with S. Derby or S. Typhimurium. Maternally-derived immunity against S. Typhimurium protected piglets against S. Typhimurium challenge, when a significant (P < 0.05) decrease in S. Typhimurium count was found in ileocaecal and submandibular lymph node, tonsil, ileum and ileum content. On the other hand, after S. Derby challenge, significant (P < 0.05) decrease in S. Derby count was detected only in ileum content. Although both serovars belong to the same O:4 serogroup, other antigenic structures, for example the flagellin, are different. In a subsequent in-vitro experiment, we found that serum from vaccinated sows inhibited the motility of S. Typhimurium but not the motility of S. Derby. Our results indicate that protectivity of S. Typhimurium vaccine against S. Derby infection is limited.

Sensory typology of apples used to evaluate scab-resistant cultivars as compared to known commercial applesOriginal Paper

P. Jankowski, K. Tomala, E. Szpadzik, N. Baryłko-Pikielna, G. Wasiak-Zys

Hort. Sci. (Prague), 2016, 43(2):51-58 | DOI: 10.17221/40/2015-HORTSCI

The aim of this work was to verify a comparative procedure for evaluating apple cultivars based on typology and comparing the sensory features of the examined cultivars during cold storage and simulated shelf-life. The procedure was applied experimentally to compare scab-resistant apples to known commercial cultivars. The procedure consisted of four sensory profiling analyses of internal apple characteristics: after two and four months of cold storage and after an additional ten days of shelf-life following each cold storage period. Eleven sensory attributes were evaluated at each timing, resulting in four general types of apple cultivars indicated and the cultivar storability over long cold storage time and shelf-life rated. The study was performed on 8 scab-resistant and 14 commercial apple cultivars evaluated over two consecutive years. The examined cultivars were then segmented into six groups of different sensory characteristics, which allowed for indicating those scab-resistant cultivars which might replace the conventional ones of equivalent sensory features.

Assessing economic pressure on the forest fund of Maramureș County - RomaniaOriginal Paper

C.C. Draghici, D. Peptenatu, A.G. Simion, R.D. Pintilii, D.C. Diaconu, C. Teodorescu, R.M. Papuc, A.M. Grigore, C.R. Dobrea

J. For. Sci., 2016, 62(4):175-185 | DOI: 10.17221/72/2015-JFS

Romania is also included among the European Union countries where deforested areas have radically increased in recent years, with mountain areas being the most affected. The pressure on the forest fund was analysed in the Maramureş County, as one of the most deforested counties of Romania. In view of assessing the forest area evolution, forested and deforested areas have been calculated for the period 2001-2012, using the Global Forest Change 2000-2012 database provided by the Department of Geographical Sciences, Maryland University. The economic pressure quantification was monitored by developing a database on economic activities based upon the loggings carried out in the period 2001-2012. This database comprises the number of companies, their turnover, profit and the number of employees for the economic sectors causing pressure on the forest fund. The outcomes show a dramatic increase in deforested areas, amounting to over 16,500 ha in the Maramureș County. Nearly 5,000 ha have been deforested in Borșa, the commune with the largest deforested areas in the period 2000-2012, causing major imbalances to the local ecosystem.

Shape memory compression anastomosis clips in gastrointestinal surgery in dogsOriginal Paper

P. Holak, Z. Lekston

Vet Med - Czech, 2016, 61(9):524-527 | DOI: 10.17221/1/2016-VETMED

This paper describes clinical experiences with the use of shape memory nickel-titanium (NiTi) clips in gastrointestinal surgery in dogs. Side-to-side small bowel anastomosis was performed in eight dogs where intestinal continuity had to be restored after bowel resection. Billroth's operation I was performed in one case. Compression anastomosis clips with two-way shape memory were used in all surgical procedures. Intestinal and gastrointestinal anastomoses involving shape memory clips were effective in all patients. Anastomotic leaks were not observed, and all clips were expelled 5-7 days after surgery. The outcomes of surgical procedures performed on canine patients with the use of shape memory NiTi clips indicate that sutureless compression anastomosis is a safe, effective and simple method of restoring gastrointestinal continuity, which can be widely applied in veterinary practice.

Least developed countries - the case of BurundiOriginal Paper

Vladimír JENÍČEK, Šárka GROFOVÁ

Agric. Econ. - Czech, 2015, 61(5):234-247 | DOI: 10.17221/48/2014-AGRICECON

The contribution is focused on the food problem in the least developed countries, on the chosen areas where the overall situation is the most problematic. It deals with Burundi, belonging to the low income food deficit countries with one of the world's lowest rates of the gross domestic product per capita. The paper defines the food security situation in the global connection, representing a wide complex of economic, social, demographic, technologic and political aspects of production, distribution, shift and consumption of foodstuffs. The inter-related causes of food insecurity are mainly the long lasting civil wars, a limited access to land, environmental degradation, climatic shocks and the rapid population growth resulting from the high birth rates and the return of refugees. Subsistence crops and livestock products represent the main source of income for most households. The performance of these subsectors is very low, and generates chronic food deficits. Agriculture is thus the key sector in the predominantly rural economies and there is still a significant room for growth, diversification, increasing productivity and improving competitiveness.

Development of a seroprevalence map for Mycoplasma gallisepticum in broilers and its application to broilers from Comunidad Valenciana (Spain) over the course of two years (2009-2010)Original Paper

C. Garcia, J.M. Soriano, P. Catala-Gregori

Vet Med - Czech, 2016, 61(3):136-140 | DOI: 10.17221/8764-VETMED

The aim of this study was to design and implement a Seroprevalence Map based on Business Intelligence for Mycoplasma gallisepticum (M. gallisepticum) in broilers in Comunidad Valenciana (Spain). To obtain the serological data we analysed 7363 samples from broiler farms over 30 days of age over the course of two years (3813 and 3550 samples in 2009 and 2010, respectively, from 189 and 193 broiler farms in 2009 and 2010, respectively). Data were represented on a map of Comunidad Valenciana to include geographical information of flock location and to facilitate the monitoring. Only one region presented with average ELISA titre values of over 500 in the 2009 period, indicating previous contact with M. gallisepticum in broiler flocks. None of the other regions showed any pressure of infection, indicating a low seroprevalence for M. gallisepticum. In addition, data from this study represent a novel tool for easy monitoring of the serological response that incorporates geographical information.

Impact of the changes in excise duties on households in the Czech RepublicOriginal Paper

Petr JANSKÝ

Agric. Econ. - Czech, 2016, 62(2):51-61 | DOI: 10.17221/31/2015-AGRICECON

Excise duties are an important source of the government revenue and their rates change relatively often in the Czech Republic. Reforms of excise duties change the prices of goods, a change to which the households respond by adjusting their expenditures. In the contribution, there are used detailed Czech Statistical Office data and the estimates of own- and cross-price and income elasticities for the individual households to create a microeconomic simulation model that enables to simulate the impact of changes in excise duties on the households' demands. There is shown the distributional impact of the current excise duties and then the impact of the hypothetical increases of 10 per cent in each of them is simulated. Further, there is simulated the impact of certain approved or proposed changes in the excise duties including the unsuccessful 2012 proposal to introduce an excise duty on wine.

Effect of mycorrhizal inoculation of leek Allium porrum L. on mineral nitrogen leachingOriginal Paper

L. Kučová, J. Záhora, R. Pokluda

Hort. Sci. (Prague), 2016, 43(4):195-202 | DOI: 10.17221/182/2015-HORTSCI

This study evaluated the influence of the arbuscular mycorrhizal fungi (AMF) inoculation of leek (Allium porrum L.) on the leaching of ammonia and nitrate nitrogen from the experimental pots filled with either sterile or non-sterile soil mix, consisting equally of the arable soil and horticultural substrate. Leek plants were inoculated by Funneliformis mosseae, Claroideoglomus claroideum, Rhizophagus intraradices and by their combinations. Based on the obtained data, it can be concluded that: (a) the influence of AMF on nitrate leaching does not follow some simple rules, (b) the amounts of percolating nitrates can be affected also by sterilization and by the combination of AMF inocula, (c) AMF can, in general, reduce the nitrate leaching from soil even though mycorrhizal colonization of roots did not achieve extremely high rates. These conclusions may be useful in the horticultural practice and ecological sustainability of the soil quality.

Predicting the earthwork width and determining the annual growth loss due to forest road construction using artificial neural network and ArcGISOriginal Paper

S. Peyrov, A. Najafi, A.R. Nourodini

J. For. Sci., 2016, 62(7):337-344 | DOI: 10.17221/110/2015-JFS

The area of forest destruction as well as the annual growth loss due to road construction before constructing a road was predicted. To do this, road cross sections of 88 points along the 10 km proposed road were predicted using Multilayer Perceptron Neural Network with two input parameters of hillside slope and rock share within MATLAB software. Then according to the predicted width, the area of road earthwork as well as the area of roadside with a 10 m width was calculated in ArcGIS software. Finally, by overlaying the inventory network layer on the road map and by knowing the annual growth (m3) for each plot the growth loss of the area of road earthwork was calculated and one-third of the annual growth increment was considered to calculate the growth loss of the roadside. According to the results, for the construction of a 10 km long road in the region, 12.98 ha of forest area is destructed due to road construction, of which 5.36 ha is destructed resulting from earthwork operations and 7.61 ha occurs in the roadside and its growth is influenced by road construction. With the construction of the road, in total, 32.606 m3 of growth will be lost annually, of which 22.221 m3 is due to road earthwork that is completely removed from the forest annual growth cycle and 10.384 m3 of the growth loss belongs to the roadside which is decreased resulting from road construction.

Changes in lymphocyte function and subset counts in cats with spontaneous chronic kidney diseaseOriginal Paper

S. Kralova-Kovarikova, L. Leva, Z. Knotek, M. Toman

Vet Med - Czech, 2016, 61(10):553-559 | DOI: 10.17221/282/2015-VETMED

Chronic kidney disease alters the immune response in humans and dogs and it is thought to be one of the causes of immunosuppression in cats. Haematological, biochemical, and immunological examinations were performed on blood samples obtained from 20 cats with chronic kidney disease, and were compared with the results of 18 healthy cats. In cats with chronic kidney disease, statistically significantly lower numbers of total lymphocytes (P < 0.01), especially T lymphocytes (P < 0.001), were observed. When the results were compared with the lymphocyte transformation test in healthy cats, decreased responses to phytohaemaglutinin, concanavalin A, and pokeweed mitogen were found in cats with chronic kidney disease. Our results document an alteration of counts and activity of lymphocytes in cats with chronic kidney disease. Thus, higher susceptibility to infection may be expected in these patients.

Uni- and multivariate approaches to evaluating the susceptibility of wheat hybrids to Fusarium head blightOriginal Paper

Maria SURMA, Tadeusz ADAMSKI, Halina WIŚNIEWSKA, Zygmunt KACZMAREK, Iwona MEJZA, Stanisław MEJZA, Anetta KUCZYŃSKA, Karolina KRYSTKOWIAK, Krzysztof MIKOŁAJCZAK, Piotr OGRODOWICZ

Czech J. Genet. Plant Breed., 2016, 52(4):132-138 | DOI: 10.17221/86/2016-CJGPB

Fusarium head blight (FHB) is a disease of small grain cereals caused by Fusarium species. The pathogens affect spikes and kernels, resulting in reductions of yield and its quality. The present study was conducted to evaluate variation in the FHB resistance of wheat F2 hybrids derived from 16 crosses between winter wheat cultivars of various origin and with different susceptibility to FHB. Plants were inoculated with a conidial suspension consisting of a mixture of F. culmorum, F. graminearum and F. avenaceum isolates. After harvest 1000-kernel weight, number of kernels per spike and kernel weight per spike were evaluated in inoculated and control plants. Disease symptoms were observed on kernels of infected plants and the percentage of Fusarium-damaged kernels (FDK) was calculated. The data were statistically evaluated using uni- and multivariate analyses. A significant influence of genotype and treatment on all observed characteristics was detected. Contrasts between control and inoculated plants showed that inoculation lowered the mean values of all the yield-related traits significantly (in the statistical sense). Results of uni- and multivariate analyses enabled us to find three cross combinations which exhibited a low FDK percentage and simultaneously a relatively low reduction of 1000-kernel weight after inoculation. They may be promising for breeding wheat with improved resistance to FHB.

Postulation of seedling stem rust resistance genes of Yunnan wheat cultivars in ChinaOriginal Paper

Tian-ya LI, Xian-xin WU, Xiao-feng XU, Wan-lin WANG, Yuan-yin CAO

Plant Protect. Sci., 2016, 52(4):242-249 | DOI: 10.17221/137/2015-PPS

To determine stem rust resistance genes of wheat varieties in Yunnan province, 11 Chinese strains of Puccinia graminis f.sp. tritici with different virulence and 1 artificial mutant strain were used in 110 wheat varieties. The results indicated that among the 45 Sr genes, Sr31, Sr5, SrTmp, Sr30, Sr36, Sr8a, Sr11, Sr24, Sr29, Sr34, Sr9e, Sr26, Sr38, Sr47, and SrTt3 were characterised in 55 wheat varieties singly or in combination. Sr5, Sr31, SrTmp, Sr36, and Sr30 were contained in 17, 16, 5, 5, and 3 cultivars, respectively. Six cultivars contained Sr24 and/or Sr34. Three plant materials likely contained one or more of Sr8a, Sr11, Sr34, and Sr23 genes as well as other unknown genes. The 16 immune or highly resistant varieties contained one or more of Sr9e, Sr26, Sr38, Sr47, SrTt3, and other unknown resistance genes. The reaction types on 22 of the tested cultivars were different from those on Sr genes tested, and their resistance genes could not be analysed. Additionally, 17 varieties were susceptible to all the tested strains, having no postulation value. Our study provides a basis for improved breeding of stem rust resistant wheat in China.

Intraday variation of metabolic key indicators in serum of dairy cows between week 2 antepartum and week 12 postpartumOriginal Paper

S. Wiedemann, K. Horstmann, M. Piechotta, U. Meyer, G. Flachowsky, M. Kaske

Czech J. Anim. Sci., 2013, 58(8):343-350 | DOI: 10.17221/6900-CJAS

Metabolic diseases during early lactation in dairy cows can be routinely diagnosed assessing key indicators in blood. The objectives of the present study were to characterize the impact of interindividual along with intraday variation on specific metabolites and to investigate the effect of the sampling time point relative to calving. Serum samples of four high-yielding, clinically healthy, multiparous dairy cows (body weight 589 ± 27 kg) were obtained in 3-h intervals during 24-h intervals throughout the transition period and early lactation (week -2 antepartum (ap), weeks 1, 2, 3, 5, 7, and 12 postpartum (pp)). The lowest intraday variation (less than 15%) as indicated by relative coefficients of variation (CV) was found for glucose, cholesterol, and aspartate aminotransferase (AST). Intraday variation characterized by a CV between 15 and 30% was typical of urea, β-hydroxybutyrate (BHB), total bilirubin, and non-esterified fatty acids (NEFA). The highest intraday variation (CV > 30%) was assessed for insulin. Week relative to calving had significant influence on interindividual means of BHB, NEFA, insulin, and cholesterol in blood, but did not affect the interindividual variation of all parameters investigated. No significant intraday variation patterns were found. It is concluded that the considerable intraday variation of especially BHB and NEFA has to be taken into account in herd health monitoring for estimating the proportional outcome in respect to animals exceeding thresholds for specific metabolic key parameters.

Genetic correlations between longevity and conformation traits in the Czech Holstein population

L. Zavadilová, M. Štípková

Czech J. Anim. Sci., 2012, 57(3):125-136 | DOI: 10.17221/5566-CJAS

Genetic correlations between longevity and conformation traits were estimated using data on Czech Holstein cows first calved in the years 1993-2008. Longevity traits considered were length of productive life and number of lactations initiated and their functional equivalents (i.e. the longevity traits corrected for milk production). Conformation traits were twenty one linear descriptive type traits, six composite traits and height at sacrum measured in cm. A possible nonlinear relationship between conformation and longevity traits was also investigated. The heritabilities ranged from 0.05 to 0.43 for conformation traits and from 0.03 to 0.05 for longevity traits. Low to moderate genetic relationships between conformation and longevity traits were found. The genetic correlations were higher for functional longevity than for direct longevity traits. Negative genetic correlations with all longevity traits were found for height at the sacrum, stature, dairy form, body conformation, and capacity. Final score showed weak genetic correlation with all analyzed longevity traits. Positive genetic correlations occurred between feet and legs and direct longevity and functional longevity (0.19, 0.14) and between udder and direct longevity (0.10). Body condition score and angularity showed strong genetic correlations with functional longevity (body condition score 0.30, angularity -0.31). Foot and leg traits showed weak genetic correlations with longevity traits except rear legs set (side view) (-0.24) and hock quality (0.19). The udder traits showed inconsistent and rather weak genetic correlations with longevity traits, with the exception of a stronger genetic correlation between rear udder width and functional longevity (-0.22) and between central ligament and number of lactations (-0.18, -0.19). The teat traits showed always negative genetic correlations with longevity traits. The strongest correlations were found for rear teat position (-0.28) and the weakest for teat length (-0.03). Some conformation traits showed markedly stronger genetic correlations with functional longevity than with direct longevity (rear udder width and rear udder height, dairy form, body condition score, angularity, rear legs set (side view), rear legs rear view). A quadratic relationship between conformation and longevity traits did exist. Even if the linear relationship generally prevailed, the quadratic relationship should be taken into account.

Determining the guidance system accuracy with the support of a large GNSS datasetOriginal Paper

V. Rataj, J. Galambošová, M. Vašek

Res. Agr. Eng., 2013, 59(10):S65-S70 | DOI: 10.17221/60/2012-RAE

Several methods are used presently to assess the accuracy of machinery guidance systems. However, these offer a limited number of records and are time and cost consuming. As the machinery is often equipped with a monitoring system for the management purposes, these data can be used. The aim of this work was to develop and verify a method to determine the accuracy of the machinery guidance systems based on a large dataset obtained from the machinery monitoring system. The proposed method uses the transformation of global navigation satellite systems (GNSS) data into a rectangular coordinate system SJTSK (National projection system - Krovak projection). Based on the geometry principle, the ideal line can be determined, and afterwards, the off-track error of each actual position can be calculated. After the verification of this method, it can be concluded that it brings benefits in terms of further use of the data from the monitoring systems, the estimation of the error based on a robust dataset, elimination of subjective and measurement method errors, as well as spatial localisation of the off-track errors at the field.

Analysis of the genetic structure of a model Scots pine (Pinus sylvestris) seed orchard for development of management strategiesOriginal Paper

O. Ivanek, Z. Procházková, K. Matějka

J. For. Sci., 2013, 59(10):377-387 | DOI: 10.17221/39/2013-JFS

Genetic structure, diversity and clonal homogeneity were determined on the basis of the isozyme gene markers in a model Scots pine seed orchard in the north-eastern part of the Czech Republic that originated from natural forest regions NFR 28 and 29 (Jeseníky Mts.) and the 2nd and 3rd forest altitudinal zones (FAZ). Clone and ramet crop variation for the 2009-2011 period was assessed. Comparing the loci measured also in two pine orchards in central Slovakia, a similar proportion of homogeneous clones but considerably lower expected heterozygosity were found out for most of the measured isozyme loci. Heterozygosity of the investigated orchard did not change considerably after the exclusion of alien and wrongly placed ramets. No difference in average cone production between clones originating from different NFR was observed. Verification of the clone identity of seed orchards managed in a certain way can be suggested with the subsequent removal of alien ramets.

Food crisis, food production and poverty

Šárka Grófová, Karel Srnec

Agric. Econ. - Czech, 2012, 58(3):119-126 | DOI: 10.17221/91/2011-AGRICECON

There is a sufficient global potential to produce the food required to feed the world population on the global level. Despite this, the number of hungry people worldwide was 925 million in 2010. Developing countries account for 98% of the world undernourished people and have a prevalence of undernourishment of 16%. Food security increasingly depends on non-agricultural factors like energy, trade and finance. The negative economic and social impacts of food, energy and the global economic and financial crises showed the vulnerability to poverty. High and rising food prices further undermined the food security and threatened the livelihoods of the most vulnerable by decreasing their already limited purchasing power. The main step in reducing poverty and hunger in developing countries is to invest in agriculture and rural development. Scaled-up investments in social protection that focus on nutrition and health are also crucial for improving the lives of the poorest people.

Animal welfare in the newborn piglet: a review

D. Mota-Rojas, J. Martinez-Burnes, D. Villanueva-Garcia, P. Roldan-Santiago, M.E. Trujillo-Ortega, H. Orozco-Gregorio, H. Bonilla-Jaime, A. Lopez-Mayagoitia

Vet Med - Czech, 2012, 57(7):338-349 | DOI: 10.17221/6262-VETMED

The objective of this review is to integrate clinical findings and laboratory analyses in such a way to improve the welfare of newborn piglets and achieve better prognoses of neonatal viability. Deaths during the intrapartum period account for a significant proportion of pre-weaning mortality in farms worldwide. Piglets which die during parturition generally have normal size and typically lack gross lesions at post-mortem examination. However, circulatory abnormalities in the umbilical cord help in assessing piglet viability. Cord lesions can be classified as normal (adhered), oedematous, congested or haemorrhagic and should always be evaluated in perinatal deaths. The likelihood of neonatal survival decreases rapidly as the severity of umbilical cord lesions increase. The physiometabolic blood profile which includes acid-base balance, degree of dehydration, mineral balance, metabolic expenditure and gas exchange are also useful clinical elements for properly assessing neonatal viability. Neonatal survival is notably reduced when the blood pH falls below 7.0, lactate rises above 90 mg/dl, bicarbonate drops below 10 mmol/l, or the pCO2 increases above 110 mm/Hg. Blood calcium is also an excellent indicator of neonatal stress when used in combination with the other parameters mentioned above. Trembling due to an imbalance in the movement of calcium in muscle is also a factor involved in neonatal mortality. Neurological function in the newborn piglet could also be evaluated by adapting the Apgar score widely used in human perinatology. Neonates with scores lower than 6 in a 10 point scale have generally lower survival rates. The two most important indicators for this vitality score are breathing latency and bradycardia. If the neonate has apnoea for more than 5 min and the cardiac frequency does not increase to more than 110 beats per minute the prognosis for survival is rather poor.

Hard machining of agricultural machines partsOriginal Paper

R. Drlička, J. Žarnovský, R. Mikuš, I. Kováč, M. Korenko

Res. Agr. Eng., 2013, 59(10):S42-S48 | DOI: 10.17221/50/2012-RAE

For the renovation and/or improvement of the surface properties of machine elements, hard facing is often used. Hard structures obtained in layers or by heat treatment achieve a hardness of up to 68 hardness (HRC) or even more. The grinding of these surfaces demands the use of processing fluids and causes sometimes changes in the surface layers structure. Hard turning can replace grinding when certain requirements are fulfilled, particularly tough machining system. Hard deposits of two weld-on materials on a sample of steel grade S235JRG1 have been turned using cemented carbide inserts with a TiAlN coating of PVD type. The surface roughness measurements along with the observation of insert wear have been conducted to find proper machining parameters and conditions for this application. Cutting inserts manufacturer guidelines for special application could be insufficient or even not provided. Besides that, it is necessary in the experiments to take into account and examine the cutting ceramics and cubic boron nitride (CBN)/polycrystalline cubic boron nitride (PCBN).

Partial equilibrium model - beefOriginal Paper

Michal MALÝ

Agric. Econ. - Czech, 2013, 59(6):247-261 | DOI: 10.17221/221/2011-AGRICECON

The main goal of the presented paper is to propose, specify and quantify a model of partial equilibrium in the beef meat vertical in the Czech Republic. Characterized within the analyzed relations in the commodity vertical will be the demand-offer relationships on partial levels of the commodity chain on the basis of which the functional relations of the simultaneous model of the above-mentioned market will subsequently be specified. The quantified model enables the definition and description of the main determinants of the beef offer and demand. The data used was acquired from the Situation and Forecast Reports (MA CZ), from the Annual Reports on the State of Agriculture (UZEI) and from the Family Accounts Statistics (CSU), for the period from 1995-2010. With regard to respecting the simultaneous relations, the model estimate was carried out by the means of the two-level method of least squares with the subsequent statistic-econometrical verification. The acquired model shows a sufficient robustness for market analyses and the possible simulation calculations.

Stand structure indices as tools to support forest management: an application in Trentino forests (Italy)Original Paper

F. Pastorella, A. Paletto

J. For. Sci., 2013, 59(4):159-168 | DOI: 10.17221/75/2012-JFS

Stand structure and species diversity are two useful parameters to provide a synthetic measure of forest biodiversity. The stand structure is spatial distribution, mutual position, diameter and height differentiation of trees in a forest ecosystem and it highly influences habitat and species diversity. The forest stand and species diversity can be measured through indices that provide important information to better address silvicultural practices and forest management strategies in the short and long-term period. These indices can be combined in a composite index in order to evaluate the complex diversity at the stand level. The aim of the paper is to identify and to test a complex index (S-index) allowing to take into account both the tree species composition and the stand structure. S-index was applied in a case study in the north-east of Italy (Trentino province). The results show that the Norway spruce forests in Trentino province are characterized by a medium-low level of complexity (S-index is in a range between 0.14 and 0.46) due to a low tree species composition rather than to the stand structure (diametric differentiation and spatial distribution of trees).

Verification of applicability of ABB robots for trans-planting seedlings in greenhouses

P. Hůla, R. Šindelář, A. Trinkl

Res. Agr. Eng., 2008, 54(3):155-162 | DOI: 10.17221/715-RAE

The article deals with the verification of applicability of different types of ABB industrial robots for trans-planting seedlings. Initial hypothesis was formulated at the beginning namely that the robots with full rotary series and parallel kinematical structure can be employed in the operation of trans-planting seedlings. Testing was performed on real types of robots IRB 1400, IRB 140T and IRB 140B, and using model application. The robot IRB 340 was tested in virtual simulation only. Based on the measurements, it was found out that all real robots tested are able to perform the operation of seedlings trans-planting involving 36 plants with the cycle duration below 2.7 min and at 100% success rate. Within the given range of the movement velocity no statistically significant differences in the cycle duration or in the number of wrongly trans-planted seedlings were found between different robot types. It can be therefore concluded that all the robots tested can be used for trans-planting seedlings.

Evaluation of the morphologic method for the detection of animal and herbal content in minced meatFood Technology and Economy, Engineering and Physical Properties

Javad Sadeghinezhad, Bahador Hajimohammadi, Farkhondeh Izadi, Fatemeh Yarmahmoudi, Rocco Latorre

Czech J. Food Sci., 2015, 33(6):564-569 | DOI: 10.17221/167/2015-CJFS

The quantitative and qualitative accuracy of the routine histological method for the determination of unauthorised animal and herbal content in minced meat was to evaluated. Laboratory adulterated minced beef meat; each containing 5, 10, 15 and 20% of soya and chicken gizzard was prepared. Then each sample was divided into three parts and four paraffin embedded blocks were prepared from each part. The sections were stained using haematoxylin and eosin, toluidine blue and Masson's trichrome. The histological examination revealed the soya and gizzard tissues clearly in all the samples. The histometrical analysis showed that there was no significant difference between the estimated percentages of both additive tissues and the real related percentages. Overall, neither was there any significant difference between the data of the three parts of each sample and the real percentages. The findings of the present research suggest the histological technique as an effective method for qualitative and quantitative evaluations of minced meat.

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