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Changes in quality parameters of vodka filtered through activated charcoalLucie Siříšťová, Šárka Přinosilová, Kateřina Riddellová, Jana Hajšlová, Karel MelzochCzech J. Food Sci., 2012, 30(5):474-482 | DOI: 10.17221/361/2011-CJFS The production technology of high-quality vodka used in Russia involves filtration through activated charcoal. To approach the quality of renowned Russian vodka, one prominent Czech spirit-producing company installed on its production premises a filtration device including a charcoal column, and launched test runs during which different filtration conditions were tested. Samples collected during the test runs were analysed by GC-FID and GC-MS with the aim to compare their composition; sensory analysis was an integral part of the evaluation. The results documented a positive effect of charcoal filtration on the quality of produced vodka, which was not reduced when higher flow rates were applied. |
Microbial community dynamics and function associated with rhizosphere over periods of rice growthQ. Hussain, G.X. Pan, Y.Z. Liu, A. Zhang, L.Q. Li, X.H. Zhang, Z.J. JinPlant Soil Environ., 2012, 58(2):55-61 | DOI: 10.17221/390/2010-PSE A field experiment was conducted to illustrate the different degree and dynamics of microbial community structure and function in the rhizosphere across four growing stages (before plantation and three growth stages) using a combination of biochemical (enzyme assay and microbial biomass carbon) and molecular approaches of qPCR and PCR-DGGE (polymerase chain reaction-denaturing gradient gel electrophoresis). Rice plant cultivation promoted higher enzyme activities (invertase and urease), microbial biomass carbon (Cmic), bacterial (16S rRNA) and fungal (ITS rRNA) genes abundances in the rhizosphere compared to unplanted soil. Principal component analyses of PCR-DGGE profile also revealed that structures of bacterial and fungal communities of rice planted soil were well distinct from unplanted soil. Moreover, enzyme activities showed a significant positive correlation with the total microbial biomass in the rhizosphere throughout growth stages of rice plant. Relative fungal: bacterial ratios were significantly higher in rice planted soil compared to unplanted soil, suggesting rice plantation enhanced the fungal community in the rice rhizosphere environment. These results further suggest a significant linkage between the microbial community dynamics and function in the rhizosphere associated with rice plant over time. |
Prediction of crude protein content in rice grain with canopy spectral reflectanceH. Zhang, T.Q. Song, K.L. Wang, G.X. Wang, H. Hu, F.P. ZengPlant Soil Environ., 2012, 58(11):514-520 | DOI: 10.17221/526/2012-PSE Non-destructive and rapid monitoring methods for crude protein content (CPC) in rice grain are of significance in nitrogen diagnosis and grain quality monitoring, and in enhancing nutritional management and use efficiency. In this study, CPC and canopy spectra in rice were measured based on rice field experiment. Key spectral bands were selected by principal component analysis (PCA) method, and the predicted models were built by multiple linear regressions (MLR), artificial neural network (ANN) and partial least squares regression (PLSR). The results showed that there is a significant correlation between CPC content and key spectral bands. The results of prediction for the three models were in order of PLSR > ANN > MLR with correlation values of 0.96, 0.92 and 0.90, respectively, for the validation data. Therefore, it is implied that CPC in rice (grain quality) could be estimated by canopy spectral data. |
Body conformation, carcass composition and physicochemical and sensory properties of meat from pheasants of different originD. Kokoszyński, Z. Bernacki, Ł. DuszyńskiCzech J. Anim. Sci., 2012, 57(3):115-124 | DOI: 10.17221/5564-CJAS Mongolian × Versicolor and common pheasants were investigated. Birds were kept in a confined, environmentally controlled facility without outdoor access and fed ad libitum commercial diets for slaughter pheasants. Body weight was determined at the end of 6, 10 and 13 weeks of rearing, and body weight and body measurements were determined in 16-week-old pheasants. At 16 weeks, 20 pheasants were taken from each genetic group for slaughter. After slaughter, pH15 of muscles was determined and carcasses were dissected. Samples of breast and leg muscles were collected to determine water holding capacity, colour, and sensory properties of meat. Compared to common pheasants, Mongolian × Versicolor hybrids were characterized by similar body weight and body measurements except for length of trunk with neck in females. The carcasses of Mongolian × Versicolor pheasants of both sexes contained more breast muscles, leg muscles, skin with subcutaneous fat and abdominal fat. Differences in the values of these traits were not significant. Significant differences in the composition of carcasses from the groups under comparison were only found for the content of skin with subcutaneous fat and abdominal fat content in females, which were significantly higher (P ≤ 0.05) in Mongolian × Versicolor females. The leg muscles had significantly higher pH15 in Mongolian × Versicolor females and significantly lower (P ≤ 0.05) redness (a*) in males. Compared to the common pheasants, the breast muscles of Mongolian × Versicolor pheasants received lower scores for aroma and tenderness and higher scores for taste, whereas leg muscles had higher scores for intensity of aroma and taste, and lower scores for taste and tenderness. |
Growth of the dominant follicle and endometrial folding after administration of hCG in mares during oestrusR. Dolezel, K. Ruzickova, G. MaceckovaVet Med - Czech, 2012, 57(1):36-41 | DOI: 10.17221/4970-VETMED The purpose of the trial was evaluation of follicular growth and endometrial folding in mares after human chorionic gonadotropin (hCG) treatment in comparison with untreated mares during oestrus. In addition, the influence of follicle size at the time of hCG treatment on these parameters was evaluated. HCG (3000 IU) was administered intravenously in 17 mares bearing dominant follicles 35-40 mm in diameter (Group A) and in 13 mares with larger follicles (Group B). Ten mares with follicles ≥ 35 mm were untreated (Group C). Ultrasonographical examination of the mares continued in 6 h intervals until ovulation. Growth of the dominant follicle was faster in Group A than in Groups B and C (1.3 vs. 0.3 and 0.7 mm/6h, P < 0.05) but diameters of the preovulatory follicles were similar - 44, 48 and 44 mm in Groups A, B and C, respectively. Similarly, reduction of endometrial folding (on a three point scale) during observation was higher in Group A than in B and C (2.1 vs. 1.2 and 1.8, A : B P < 0.05) but endometrial folding values in the term before ovulation were not different (0.6, 0.9 and 0.6 in Groups A, B and C). A positive correlation between the speed of follicular growth and reduction of endometrial folding was found (rs - 0.479, P = 0.003). Irregularity in follicle shape (the difference between the longest axis and its perpendicular axis) at the beginning of observation (3.3, 4.0 and 3.2 mm) was lower than before ovulation (7.4, 10.4 and 9.2 mm) in all groups (P < 0.01). The interval from the beginning of observation until ovulation was significantly shorter in Groups A and B versus C (37 and 31 vs. 103 h, P < 0.01). The results show that growth of dominant follicles after hCG is influenced by the size of the follicles at the time of treatment and correlates with reduction in endometrial folding as well as irregularity of follicle shape. Nevertheless, hCG treatment does not influence the size and shape of preovulatory follicles or endometrial folding immediately before ovulation. |
The cortical branches of the middle cerebral artery in the otter (Lutra lutra)B. Skoczylas, W. Brudnicki, W. Nowicki, K. Kirkillo-Stacewicz, R. Jablonski, J. WachVet Med - Czech, 2012, 57(6):282-286 | DOI: 10.17221/6014-VETMED The cortical branches of the middle cerebral artery in the otter were described using 60 hemispheres. It was demonstrated that the artery is divided into ten permanent branches. Two rhinal arteries supply the region of the brain located on the border between the old and the archicortex and the neocortex. The other eight branches are divided into three branches running towards the frontal lobe, two branches - to the region of the parietal lobe and three temporal branches which supply blood to the neocortex only. The frontal, parietal and temporal branches descended independently from the main trunk of the middle cerebral artery or first formed a common trunk. Common trunks for specific groups of bifurcations were described as the middle cerebral artery (anterior, superior and posterior). |
Reducing erosion from forest roads and skid trails by management practicesM. Akbarimehr, R. NaghdiJ. For. Sci., 2012, 58(4):165-169 | DOI: 10.17221/136/2010-JFS A road network in forest lands provides easy access to forest resources for extraction, regeneration, protection and recreation activities. Erosion from forest roads and skid trails is a major concern in forest management due to the capability to cause adverse environmental effects. The objective of this paper is to introduce two methods for reducing erosion on forest roads and skid trails: water diversion and vegetation cover. Factors affecting erosion on forest roads and skid trails are climate, quality of forest road surfacing material, traffic, slope and vegetation cover. There are several management practices to mitigate the impact of logging and forest road and skid trail construction on stream water quality. Sediments delivered to streams from roads and skid trails lead to a number of dramatic effects on water quality and aquatic life. These management practices were found to be effective in controlling and reducing the runoff volume and soil erosion. Therefore, management and maintenance of forest roads and skid trails are essential elements to mitigate erosion. |
Apate monachus (Fabricius, 1775), a bostrichid pest of pomegranate and carob trees in nurseries - Short CommunicationCarmelo Peter BonsignorePlant Protect. Sci., 2012, 48(2):94-97 | DOI: 10.17221/53/2011-PPS The attacks of adult Apate monachus (Fabricius) on pomegranate (Punica granatum L.) and carob (Ceratonia siliqua L.) trees in a plant nursery in southern Italy was described. The adult beetles produce circular holes and large sinuous tunnels on young trees that can involve the trunk and branches. The same plant can be affected by large numbers of such access holes. The adults appear during late June and reach a peak during the first three weeks of July. Given the increase in the spread of cultivation of these trees and, therefore, in the rate of spread of this pest species, further damage to crops is expected. |
Effect of storage temperature on the quality of dry fermented sausage PoličanJosef Kameník, Alena Saláková, Gabriela Bořilová, Zdeněk Pavlík, Eva Standarová, Ladislav SteinhauserCzech J. Food Sci., 2012, 30(4):293-301 | DOI: 10.17221/284/2011-CJFS The influence of different storage temperatures (5°C and 15°C) on the quality of vacuum-packed dry fermented sausage Poličan was determined. The salami mixture, finished salamis (the maturing period of 30 days), and salamis stored for 30, 60, 90, and 120 days were analysed. The analyses performed (physical/chemical, sensory, microbiological) found no differences in sensory properties or basic physical/chemical and microbiological parameters in the products after storage under different temperature conditions for 120 days. When stored at 15°C, the total content of biogenic amines in samples was higher than that for samples stored at 5°C with statistical differences P ≤ 0.05. If the principles of good manufacturing practice are observed at all phases of the technological process, the storage temperature of 15°C does not represent a risk as the consequent concentration of biogenic amines and polyamines remains extremely low. |
Surface activity of salt-tolerant Serratia spp. and crude oil biodegradation in saline soilT. Wu, W.J. Xie, Y.L. Yi, X.B. Li, H.J. Yang, J. WangPlant Soil Environ., 2012, 58(9):412-416 | DOI: 10.17221/217/2012-PSE An ideal strain for crude oil degradation in saline soils would be one with high salt-tolerance. A novel bacterial strain, Serratia sp. BF40, was isolated from crude oil contaminated saline soils. Its salt-tolerance, surface activity and ability to degrade crude oil in saline soils were evaluated. It can grow in liquid culture with NaCl concentration less than 6.0%. Its surface activity characterized as an efficient surface tension reduction, was significantly affected by salinity above 2.0%. BF40 inoculation could decrease surface tension of soil solutions and facilitate crude oil removal in soils with 0.22-1.20% salinity, but the efficiency was both significantly lower than its biosurfactant addition. The BF40 strain has a high potential for biodegradation of crude oil contaminated saline soils in view of its high surface activity and salt-tolerance, which is the first report of biosurfactant producing by the genus Serratia for petroleum degrading. We suggest that biosurfactant addition is an efficient strategy. Simultaneously, the growing status of the strain and how to boost its surface activity in saline soils should deserve further studies in order to achieve a continuous biosurfactant supply. |
Allometric growth of calcium, phosphorus, magnesium, sodium, and potassium in slow- and fast-growing young chickensJ. ZelenkaCzech J. Anim. Sci., 2012, 57(12):557-561 | DOI: 10.17221/6413-CJAS Allometric growth of body macrominerals was examined in slow-growing laying-type cockerels (SG) and in fast-growing male broiler hybrids (FG) during the growing period from hatch to day 22. Allometric coefficients for dry matter, calcium, phosphorus, magnesium, sodium, and potassium in relation to body weight were 1.091, 1.427, 1.383, 1.284, 0.843, and 1.097 for SG chickens and 1.075, 1.276, 1.233, 1.216, 0.943, and 1.144 for FG chickens, respectively. Allometric coefficients describing the relationships of Ca, P, Mg, Na, and K with dry matter weight were 1.302, 1.260, 1.172, 0.772, and 0.998 for SG chickens and 1.185, 1.143, 1.127, 0.878, and 1.059 for FG chickens, respectively. High allometric coefficients for Ca, P, and Mg in both genotypes likely indicate a rapid growth of skeletal tissues which requires an adequate mineral nutrition during this period of growth. The deposition of Ca and P relative to dry matter was higher (P < 0.05) and that of Na lower (P < 0.01) in SG chickens thus suggesting that the relative growth of these minerals may be affected by genotype. |
Pathological and immunohistochemical studies on rare cases of primary extragenital transmissible venereal tumours in the mammary glandK. Gupta, N.K. SoodVet Med - Czech, 2012, 57(4):198-206 | DOI: 10.17221/5917-VETMED Transmissible venereal tumours (TVT) are normally seen on the genitalia of both male and female dogs, and at times may be observed on extra-genital sites such as lips, oral mucosa, and peritoneum, or in organs such as the tonsils, eye, liver, spleen, kidney, lung, and musculature. The present communication deals with two rare cases of primary extragenital TVT involving the mammary glands of dogs and their pathology and immunohistochemistry. The study indicated that apart from routinely used markers such as vimentin, p53, PCNA, Ki-67 and c-myc, the oncogenes Rb and cyclin D1 proved to be novel markers of TVT in dogs. To the authors' knowledge, this is the first report of extra-genital mammary TVT in canines. |
Evaluation of full tree skidding by HSM-904 skidder in patch cutting of aspen plantation in Northern IranR. Mousavi, M. Nikooy, A. E. Nezhad, M. ErshadfarJ. For. Sci., 2012, 58(2):79-87 | DOI: 10.17221/78/2011-JFS This paper presents research results of the performance of HSM-904 grapple skidder using a full tree harvesting method in a non-native aspen Populus deltoides plantation in even terrain conditions in Shafaroud, Northern Iran. Patch cutting as a silvicultural method was used in the plantation (2,000 ha). To evaluate the newly introduced machine to a ground skidding system in the aspen plantation and the possibility to increase the production rate, an empirical time study was conducted. The elements of the skidding work phase were identified and 58 cycles were recorded for the study. The models for effective time consumption, total productivity and work phase models are calculated. The average load per cycle was 2.2 m3, the average one-way skidding distance was 253 m. The average travel speed of unloaded skidder was 5.53 km.h-1 and the average speed of loaded skidder was lower than the speed of the unloaded one by 2.94 km.h-1. The average output in the study was 7.1 m3 per effective hour and the unit cost was 13.9 USD.m-3. |
Arbuscular mycorrhizal technology for the growth enhancement of micropropagated Spilanthes acmella MurrKuldeep YADAV, Narender SINGH, Ashok AGGARWALPlant Protect. Sci., 2012, 48(1):31-36 | DOI: 10.17221/21/2011-PPS Spilanthes acmella (Asteraceae) is an endangered ornamental cum medicinal annual herb. This study reports on the effect of two arbuscular mycorrhizal fungi (Glomus mosseae and Acaulospora laevis) applied either alone or in combination on post-transplanting performance of micropropagated S. acmella. Complete plantlets of S. acmella were raised by direct organogenesis from nodal explants on Murashige and Skoog medium supplemented with various cytokinins. S. acmella plantlets responded to all three mycorrhizal treatments in a significantly different way. G. mosseae enhanced the survival rate of S. acmella plantlets to 100%. Plant height, plant spread, number of branches per plant, number of leaves per plant, leaf area, biomass production, and chlorophyll content were significantly higher in AM inoculated plantlets as compared to the uninoculated ones. This clearly demonstrates that AM inoculation improved not only the survival rate of micropropagated plantlets but also their growth and biomass yield. |
Outdoor environment as a source of Listeria monocytogenes in food chainTereza Gelbíčová, Renáta KarpíškováCzech J. Food Sci., 2012, 30(1):83-88 | DOI: 10.17221/7/2011-CJFS We monitored the presence of Listeria monocytogenes in environmental sources and to evaluate the phenotypic and molecular characteristics of the isolates recovered. L. monocytogenes was isolated in 12 (11.2%) of the 107 samples from the wild, farm environment, and vegetation. Most isolates (83.3%) were of serotype 1/2a and the remainder (2) were of serotype 4b. All 12 isolates were susceptible to the whole range of antimicrobials tested. These12 strains were carriers of the virulence genes prfA, hlyA, actA, plcA, plcB, inlA, inlB, inlC, and inlJ. The detection of the inlA gene in 4 (33.3%) of 12 strains using the PCR-RFLP suggests the potential of some of these strains to penetrate into epithelial cells of the intestinal barrier. Macrorestriction analysis also confirmed clonal identity of some environmental isolates with food and human isolates. These results indicate that the external environment is a source of potentially pathogenic strains of L. monocytogenes. |
Effects of exogenous proline and trehalose on physiological responses in rice seedlings during salt-stress and after recoveryN. Nounjan, P. TheerakulpisutPlant Soil Environ., 2012, 58(7):309-315 | DOI: 10.17221/762/2011-PSE Two osmoprotectants (proline - Pro; trehalose - Tre) were exogenously supplied to seedlings of rice cvs. Pokkali (PK - salt-tolerant) and Khao Dawk Mali 105 (KDML105 - salt-sensitive) to investigate their effects on plants exposed to 200 mmol/L NaCl for 6 days and 5 days after recovery from stress. The reduction of growth, increase in Na+ to K+ ratio, high level of hydrogen peroxide (H2O2) content, enhanced activity of antioxidant enzymes (superoxide dismutase - SOD, peroxidase - POX, catalase - CAT and ascorbate peroxidase - APX) were observed in both rice cultivars under NaCl treatments. Exogenous Pro and Tre supplement to NaCl-stressed plants did not mitigate the reduction of growth during salt-stress. Nevertheless, during recovery plants previously supplied with Tre showed markedly higher percentage of growth recovery than those treated with NaCl alone or supplied with Pro. The beneficial effect of Tre on growth recovery was clearly demonstrated in KDML105 in which growth enhancement was related to reduction in Na+ to K+ ratio. Exogenous Pro was able to reduce H2O2 in both cultivars during salt stress whereas Tre could reduce it only in KDML105. Exogenous Tre did not enhance any antioxidant enzymes during stress but enhanced APX activity in KDML105 during recovery. Exogenous Pro enhanced the activity of APX in PK, and POX, CAT and APX in KDML105 during both stress and recovery period. |
Physiologic specialization of wheat leaf rust (Puccinia triticina Eriks.) in the Slovak Republic in 2009-2011Original PaperAlena Hanzalová, Taťána Sumíková, Jozef Huszár, Pavel BartošCzech J. Genet. Plant Breed., 2012, 48(3):101-107 | DOI: 10.17221/28/2012-CJGPB In 2009-2011 virulence of the wheat leaf rust population was studied on Thatcher near-isogenic lines with Lr1, Lr2a, Lr2b, Lr2c, Lr3a, Lr9, Lr11, Lr13, Lr15, Lr17, Lr19, Lr21, Lr23, Lr24, Lr26 and Lr28. Samples of leaf rust were obtained from different parts of the Slovak Republic. A total of 122 wheat leaf rust isolates were analysed. Resistance gene Lr19 was effective to all tested isolates. Virulence to Lr9 was found, however only in one isolate. Gene Lr24 conditioned resistance to almost all rust collections. A lower frequency of virulence to Lr2a and Lr28 was also observed. Nineteen winter wheat cultivars grown in Slovakia were tested with 8 leaf rust isolates. Winter wheat cultivar Bona Dea was resistant to all isolates applied in the greenhouse test. Presence of Lr genes was estimated according to the reactions of the tested cultivars. Presence of Lr10, Lr26, Lr34 and Lr37 was studied by molecular markers. |
Toxoplasma gondii and Neospora caninum antibodies in goats in the Czech RepublicE. Bartova, K. SedlakVet Med - Czech, 2012, 57(3):111-114 | DOI: 10.17221/5850-VETMED Toxoplasma gondii is zoonotic protozoan parasite that causes infections in many vertebrate species. The present study determined the seroprevalence of T. gondii and N. caninum in goats from the Czech Republic. Serum samples were collected from 251 healthy adult goats in the Czech Republic during the years 2006 to 2009. Sera samples were tested for serum antibodies to Toxoplasma gondii by an enzyme-linked immunosorbent assay with cut off equal to or higher than 50% S/P. The same samples were tested for serum antibodies to Neospora caninum by a competitive-inhibition enzyme-linked immunosorbent assay with cut off equal to or higher than 30% inhibition; positive sera were confirmed by an indirect fluorescent antibody test with cut-off titre equal to or higher than 40. Sera positive in both tests were marked as positive. In total, 166 (66%) and 15 (6%) goat sera reacted positively for T. gondii and N. caninum antibodies, respectively. All sera positive for N. caninum antibodies were simultaneously positive for T. gondii antibodies. This is the first detection of N. caninum antibodies in goats in the Czech Republic. Our findings indicate that goats in the Czech Republic are frequently exposed to T. gondii, but less frequently to N. caninum. |
The spinal nerves forming the brachial plexus in mole-rats (Spalax leucodon)A. Aydin, M. KaranVet Med - Czech, 2012, 57(8):430-433 | DOI: 10.17221/6311-VETMED In this study, the brachial plexus in the mole-rat was investigated. Six adult mole-rats were used and the brachial plexus of each was dissected. It was found that the brachial plexus in the mole-rat was formed by the rami ventralis of C5. A single root was formed from a major part of the ramus ventralis of C5 and through the joining of the whole of the ramus ventralis of C6, C7, C8 and T1. Thus, in mole-rats, the spinal nerves forming the brachial plexus and the joining of these spinal nerves to each other differ from other rodents and mammals. |
Globalisation - content, dynamicsVladimír JeníčekAgric. Econ. - Czech, 2012, 58(3):127-134 | DOI: 10.17221/136/2011-AGRICECON The notion of international relationships is supplemented by other phenomena during the last time. One of them is globalisation, called on by technological, social and cultural changes, which have shortened the economic distance among countries. The improvement of transport and communication technologies has decreased transport costs of goods, people and information. Traditional governmental policies limiting the cross-border transactions were liberalised or removed what in consequence brought about the growth of international trade and foreign direct investments (FDI). Globalisation changes the properties of the world economy and influences the core of the successful economic approaches to development, what increases the need to secure the sustainability of economic development. |
Influence of growing Bt maize on Fusarium infection and mycotoxins content - a reviewJan Nedělník, Hana Lindušková, Martin KmochPlant Protect. Sci., 2012, 48(10):S18-S24 | DOI: 10.17221/36/2012-PPS The literature linking Bt maize versus non-Bt maize and the changes in the fungal microflora spectrum and in the mycotoxins content have been summarised. The European corn borer reportedly promotes the infection of maize by Fusarium spp. Stalk and ear rots caused by Fusarium spp. are often related to mycotoxin accumulation in maize kernels. As a result, food and animal feed from maize are more severely contaminated with Fusarium mycotoxins: e.g. fumonisins (FUM), deoxynivalenol (DON), and zearalenone (ZEA). Mycotoxins in field maize lead annually economic losses of hundreds of millions of dollars in all regions of the world. The insecticidal proteins in genetically modified hybrid Bt maize reduce insect damage caused by certain Lepidopteran larvae, which in turn can reduce the infection of the grain by the mycotoxigenic fungi. Where such insect damage is a major factor in mycotoxin contamination, Bt maize can lower mycotoxin levels in many cases. The protection of maize plants against insect damage (European corn borer) through the use of Bt technology seems to be one of the ways to reduce the contamination of maize by Fusarium species and mycotoxins. |
Effects of whole buckwheat flour on physical, chemical, and sensory properties of flat bread, LavaşGökçen YILDIZ, Nermin BILGIÇLICzech J. Food Sci., 2012, 30(6):534-540 | DOI: 10.17221/10/2012-CJFS The whole buckwheat flour (WBF) was used in Turkish flat bread, lavaş, up to 30% level without gluten, and up to 40% level with gluten and sodium stearoyl-2-lactylate (SSL) additions. Some physical, chemical, and sensory properties of lavaş bread samples were determined. While ash, crude fiber, phytic acid (PA), Fe, K, Mg, and P contents of lavaş breads increased with WBF addition, gluten supplementation caused an increase especially in protein and Ca contents. Leavening process decreased PA contents in the breads compared to raw material, but WBF substitution increased PA contents up to 729 mg/100 g. As a result, the utilisation of WBF in lavaş bread improved the nutrients contents of the bread except PA. The dark colour and slight bitter taste of the WBF affected the sensory score of lavaş bread negatively at 40% substitution level, but the overall acceptability values did not change significantly (P < 0.05) compared to control sample. |
Effect of long-term cattle slurry and mineral N, P and K application on concentrations of N, P, K, Ca, Mg, As, Cd, Cr, Cu, Mn, Ni, Pb and Zn in peeled potato tubers and peelsP. Šrek, M. Hejcman, E. KunzováPlant Soil Environ., 2012, 58(4):167-173 | DOI: 10.17221/610/2011-PSE Little information is available on how fertilizer application affects concentration of many elements in peeled potato (Solanum tuberosum) tubers and peels. We analyzed how long-term application of cattle slurry and mineral N, P and K fertilizers affects the yield of tubers, their dry matter content and concentrations of elements. In 2009, potatoes tubers were collected in control, cattle slurry (CS), mineral N4P2K2 and combined CSN4P2K2 treatment of the Ruzyně Fertilizer and Crop Rotation Experiment established on Illimerized Luvisol in Prague (Czech Republic) in 1955. Amount of N, P and K supplied by CS was 138, 30 and 172 kg/ha and the amount supplied by N4P2K2 was 110, 31 and 186 kg/ha. Yield of fresh potatoes ranged from 20.6 in the control up to 31.2 t/ha in CSN4P2K2 treatment. Dry matter content of unpeeled tubers, peeled tubers and potato peels was not significantly affected by fertilizer treatments probably because of not excessive N application. Normal cropping practices with application of CS and mineral N, P and K fertilizers did not significantly increase concentrations of trace elements in peeled tubers or potato peels on neutral soil with low trace elements availability. Concentrations of many elements (N, P, K, Ca, Mg, Cd, Cr, Cu, Mn, Ni, and Zn) were higher in potato peels than in peeled tubers, but the differences in the case of trace elements were relatively small. |
Changes in soil fertility status of maize-wheat system due to long-term use of chemical fertilizers and amendments in an alfisolG. Verma, R.P. Sharma, S.P. Sharma, S.K. Subehia, S. ShambhaviPlant Soil Environ., 2012, 58(12):529-533 | DOI: 10.17221/133/2012-PSE The present study was undertaken to quantify changes in the status of soil nutrients, their depletion and build-up after continuous long intensive cropping for last 36 years in a permanent manorial trial which has been in progress since 1972 in an alfisol of western Himalayas. The rotation was maize-wheat which included various combinations of N, P, K, Zn and FYM (farmyard manure). Continuous cultivation influenced pH, OC (organic carbon), available N (nitrogen), P (phosphorus) and K (potassium). An increase in the status of organic carbon was observed in 100% NPK + FYM treatments for more than three decades from initial value of 7.9 to 12.0 g/kg. The use of either FYM or lime alongwith 100% NPK sustained crop productivity or improved nutrient status. However, imbalanced use of nutrients i.e. NP or N alone is adversely affecting the fertility of soil by aggravating the problem of soil acidity. Application of S free P fertilizer DAP (diammonium phosphate) drastically reduced the yield of both the crops. Thus, continuous use of balanced fertilizers is necessary for sustaining soil fertility and productivity of crops. |
Prevalence, antimicrobial resistance, and molecular characterization of Campylobacter jejuni and C. coli isolated from retail raw meat in PolandK. Wieczorek, R. Szewczyk, J. OsekVet Med - Czech, 2012, 57(6):293-299 | DOI: 10.17221/6016-VETMED The study was conducted to investigate the presence of Campylobacter spp. in meat sold to consumers at a retail market in Poland. Antimicrobial resistance and the presence of putative virulence genes of the isolates were also examined. A total of 558 meat samples, including beef (n = 105), pork (n = 85), and poultry (n = 368) were collected over an almost three year study period. It was found that 321 samples, all of them originating from poultry, were contaminated with Campylobacter spp. Most of the obtained isolates were classified as C. coli (189 strains, 58.9%), whereas C. jejuni was identified in 132 (41.1%) samples. All Campylobacter strains were susceptible to gentamicin and all but one C. coli isolate to erythromycin. On the other hand, the highest level of resistance among Campylobacter tested was to ciprofloxacin (91% for C. jejuni and 86.1% for C. coli) and nalidixic acid (89.3% for C. jejuni and 85% for C. coli). Furthermore, resistance to two or more classes of antibiotics was found in the majority (60.9%) of Campylobacter spp. and among them one C. coli strain showed resistance to four different classes of antimicrobials. Identification of virulence genes in the isolated Campylobacter showed that all of them had the flaA and cadF genes. The iam marker was found more often in C. coli strains (88.8%) compared to C. jejuni isolates (53.8%). On the other hand, the virB11 gene was identified only in 4.2% of C. coli and in 6.1% of C. jejuni strains, respectively. Furthermore, the prevalence of the cdtA, cdtB, and cdtC genes among C. jejuni strains was 97.7%, 93.2%, 96.2%, respectively, and was significantly higher than for C. coli regarding the cdtC (66.7%) gene. The obtained results showed that the presence of Campylobacter in retail meat may represent a threat to public health. |
Impact of Scots pine admixture in European beech stand on dissolved organic carbon and nitrogen leaching from organic and humic horizons of Dystric Arenosols in Northern PolandJ. Jonczak, A. ParzychJ. For. Sci., 2012, 58(6):278-286 | DOI: 10.17221/7/2012-JFS The effect of Scots pine admixture in European beech stand on the leaching of dissolved organic carbon (DOC), dissolved organic nitrogen (DON), nitrate nitrogen (NO3-N) and ammonium nitrogen (NH4-N) from organic and humic horizons of Dystric Arenosols was studied in northern Poland in 2008-2009. Three zero-tension lysimeters under organic and humic horizons were installed in pure beech and mixed pine-beech stands. Water samples were collected after each rainfall, measured volumetrically, filtered and analysed. In each sample pH and concentrations of DOC, DON, NH4-N and NO3-N were analysed. Stronger acidification of leachates was observed in mixed stand compared to pure beech. About twice higher concentration of DOC and its fluxes per unit area were determined in mixed stand. The fluxes of DOC from unit mass of soil were less varied. In general, lower concentrations of DON, NH4-N and NO3-N as well as fluxes of the components (calculated in mg.kg-1DM.year-1 and mg.m-2.year-1) were observed in mixed stand. |
The assessment of the economic risks level of sugar beet growing for the farm economyJosef Pulkrábek, Miroslav Kavka, Vladimír Rataj, Jaroslav Humpál, Ladislav Nozdrovický, Zdeněk Trávníček, Vladimír PačutaAgric. Econ. - Czech, 2012, 58(1):41-48 | DOI: 10.17221/111/2010-AGRICECON The risk rate of sugar beet growing was analyzed by using the algorithm for modelling and generating the random numbers based on the conditions determined in advance and the statistical distribution of sugar beets yield, the total costs, earnings and gross profit. On the bases of results of the analysis of economic risks of sugar beet production in years 1995-2009, it follows that the sugar beet growing in all regions is highly risky in the Czech Republic. The subsidy SAPS and TOP-UP per 1 hectare of sugar beet have a positive impact on its economics though not sufficient enough. In practice, it means that it is highly probable that the break-even point will not be achieved and thereby it is highly probable that the fixed costs are not covered and the update of machines is significantly limited. This happens mainly in the marginal regions. If the agricultural companies count on the separate sugar payment, the sugar beet growing is in all regions of the Czech Republic with acceptable risk. |
Reaction of selected apple cultivars to wilt pathogen Verticillium dahliaMuwaffaq R. KARAJEH, Saed J. OWAISPlant Protect. Sci., 2012, 48(3):99-104 | DOI: 10.17221/61/2011-PPS The reaction of five apple cultivars to olive wilt caused byVerticillium dahliae Kleb was evaluated. Five apple cultivars (Royal Gala, Delicious Anabri, Double Red, Golden Delicious, Granny Smith) and one olive cultivar (Nabali Mohassan) were inoculated with V. dahliae and grown under partially controlled greenhouse conditions. Typical symptoms of the disease were developed on the inoculated olive seedlings. However, all tested apple cultivars did not show the typical symptoms of Verticillium wilt except cv. Delicious Anbari, which showed 8.31% disease severity. The average percentage of disease severity was 61.2% in Nabali Mohassan. The pathogen was positively re-isolated from the inoculated seedlings of cvs Nabali Mohassan and Delicious Anbari after 12 months from the inoculation date. Results indicate that an apple plantation to replace dead or severely diseased olive trees infested with Verticillium wilt is an appropriate low-cost and environmentally sound IPM alternative approach to control Verticillium wilt. |
Differences in the amino acid composition of the breast muscle of wild and farmed pheasantsAdam Brudnicki, Anna Kułakowska, Dominika Pietruszyńska, Małgorzata Łożyca-Kapłon, Jan WachCzech J. Food Sci., 2012, 30(4):309-313 | DOI: 10.17221/17/2011-CJFS Numerous studies show the slaughter yield and also basic chemical composition of pheasant meat. The results reveal a higher biological value of the meat of pheasants which were fed naturally, in comparison to the meat of pheasants fed with commercial mixtures. In many countries, the pheasant is selected with the aim of producing high quality meat with very desirable nutritional values. There are only few publications on amino acid composition of pheasant meat. The knowledge of amino acid composition of pheasant meat can be used to determine its potential nutritional value. The amino acid compositions were compared of the meats of wild and farm pheasants. In the study, the following amino acids were determined: Asp, Thr, Ser, Glu, Pro, Gly, Ala, Val, Ile, Leu, Tyr, Phe, His, Lys, Arg. An improved amino acid profile was found in the breast muscle of pheasants kept at the farm in comparison with that of wild pheasants. |
Nodulation of lucerne (Medicago sativa L.) roots: depth distribution and temporal variationF. Li, T. Kautz, R. Pude, U. KöpkePlant Soil Environ., 2012, 58(9):424-428 | DOI: 10.17221/314/2012-PSE This study was undertaken in order to test whether the development of nodule density over the vegetation period is different in lucerne stands grown for 1, 2 or 3 years continuously. For rapidly assessing nodule density in the field, a modified profile wall method was applied. Nodules were counted on a vertical profile wall, after spraying away a 2 cm layer of soil. For validating this method nodule density was determined on roots washed from monolith samples. Field data indicate that there is a shift of nodulation towards deeper soil layers with increasing maturity of lucerne stands. In 1-year lucerne nodulation was limited virtually to the top 15 cm of soil. In the 15-30 cm soil layer and in the subsoil (30-80 cm), nodule density increased with the cropping duration (1 year < 2 years < 3 years). Temporal decreases in nodule density during the vegetation period associated with dry spells were more pronounced for 2-years as compared with 3-years lucerne. |
