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Results 3391 to 3420 of 5824:

Successful elimination of PRRS virus from an infected farrow-to-finish herd by vaccinationOriginal Paper

M. Toman, V. Celer, J. Smola

Vet Med - Czech, 2017, 62(10):553-558 | DOI: 10.17221/68/2017-VETMED

Porcine reproductive and respiratory syndrome (PRRS) virus represents a major threat to the swine industry worldwide. This study describes the transmission of a European strain of PRRS-1 to a pig farm leading to the spread of the virus to different age categories of pigs and the development of clinical signs in pregnant sows and piglets. Porcine reproductive and respiratory syndrome aetiology was confirmed by serological tests and by virus isolation and subsequent sequencing. Repeated mass vaccination using modified live virus was used to synchronise the level of PRRS-specific immunity in all age categories of animals and to hinder virus circulation in the herd. Four months after the second mass vaccination, regular modified live virus vaccination of sows and gilts was implemented. Introduction of sentinel animals demonstrated cessation of virus circulation and the success of the control programme.

Nutritive value of red clover and lucerne forages for ruminants estimated by in vitro and in vivo digestibility methods

P. Homolka, V. Koukolová, M. Podsedníèek, A. Hlaváèková

Czech J. Anim. Sci., 2012, 57(10):454-468 | DOI: 10.17221/6346-CJAS

The aim of this study was to determine the nutrient and energy levels of red clover and lucerne forage. Investigation of forage at different maturity stages of three growths was carried out by chemical analysis, in vitro and in vivo digestibility methods. Generally, maturation caused a significant increase in fibre fractions. With the increasing maturity of forage samples the in vivo, in vitro, and calculated in vivo (in vivocalcul) digestibilities of organic matter (OM) linearly decreased. The in vitro and in vivocalcul digestibilities of OM averaged 0.754 and 0.708 for red clover and 0.717 and 0.667 for lucerne, respectively. The in vivo OM digestibility averaged 0.710 for red clover and 0.666 for lucerne. Gross energy (GE), digestible energy (DE), metabolizable energy (ME), net energy for lactation (NEL), and net energy for growth (NEG) averaged 18.12, 12.41, 9.60, 5.67, 5.50 and 18.09, 11.56, 9.01, 5.26, 4.99 MJ/kg of dry matter for red clover and lucerne, respectively. The effect of a vegetative stage on energy values of both forages was diverged for various growth times. When data were pooled across the estimated season, seven cutting-specific equations for descriptions of GE, DE, ME, NEL, NEG, in vitro, and in vivo OM digestibilities were obtained for red clover and lucerne, separately. The red clover model expression gave similar prediction equations for lucerne. It was possible to predict cutting-specific equations with coefficients of determination R2 > 0.719 for red clover and R2 > 0.400 for lucerne of the variation in GE, DE, ME, NEL, and NEG. The in vitro and in vivo OM digestibility equations were predicted with R2 being 0.840 (in vitro) and 0.707 (in vivo) for red clover, and 0.979 (in vitro) and 0.937 (in vivo) for lucerne. The parameters of these specific equations were statistically preferable than the general model expression which included both forages together.

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

P. Jankowski, K. Tomala, E. Szpadzik, N. Bary³ko-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.

Carbohydrate and nitrogen reserves in two cultivars of Japanese plum grown under organic and conventional managementOriginal Paper

Luis Felipe Pérez-Romero, Antonio Daza, Juan Francisco Herencia, Francisco Teodoro Arroyo

Hort. Sci. (Prague), 2017, 44(4):163-170 | DOI: 10.17221/92/2016-HORTSCI

Nitrogen and carbohydrate (soluble sugars and starch) reserves were analysed in twig samples of 'Red Beaut' and 'Showtime' Japanese plum (Prunus salicina Lindl.) cultivars cultivated in two similar experimental orchards under organic and conventional management. 'Red Beaut' is a vigorous cultivar while 'Showtime' is a middle to low vigorous cultivar. Both cultivars exhibited delayed flowering and premature defoliation under organic management. In general, there were no differences in the concentration of reserves between the two types of management for either of the two plum cultivars, and, likewise, no differences were observed between cultivars, regardless of their vigor. Additionally, reserves were also analysed in plantlets of 'Mariana 2624' rootstock (Prunus cerasifera Ehrh × Prunus munsoniana W. Wight & Hedrick) grown in a growth chamber that simulated conditions of spring and autumn periods and subjected to organic or mineral fertilisation. Plants subjected to organic fertilisation were smaller and defoliated earlier, but the sizes of carbohydrate and nitrogen reserves were similar to that of plants grown with mineral fertilisation.

Antagonistic activity of selected bacteria of the soil environment of carrotOriginal Paper

El¿bieta PATKOWSKA, Marzena B£A¯EWICZ-WO¬NIAK, Dariusz WACH

Plant Soil Environ., 2017, 63(6):277-281 | DOI: 10.17221/216/2017-PSE

The purpose of the present studies was to determine the antagonistic effect of bacteria Bacillus spp. and Pseudomonas spp. towards selected fungi from the soil environment of carrot. Oats (Avena sativa L.), tansy phacelia (Phacelia tanacetifolia Bentham) and vetch (Vicia satica L.) were used as cover crops in the cultivation of this plant. In the traditional cultivation of carrot the population of bacteria was the smallest, while after the application of oats it was the largest. Laboratory tests showed that cover crops promoted the development of antagonistic Bacillus spp. and Pseudomonas spp. Irrespective of the experimental treatment, those bacteria were the most effective in limiting the growth and development of Fusarium oxysporum and Thanatephorus cucumeris (syn. Rhizoctonia solani), while being less effective towards Altenaria dauci and Alternaria radicina, and the least towards Sclerotinia sclerotiorum. The best total antagonistic effect of Pseudomonas spp. and Bacillus spp. towards the tested fungi was found after using oats and vetch, while the worst - in the traditional cultivation of carrot.

How does general economy and agriculture sector performance influence farm producer support in the OECD countries?

Tomasz Siudek, Aldona Zawojska

Agric. Econ. - Czech, 2012, 58(3):101-118 | DOI: 10.17221/57/2011-AGRICECON

This paper assesses the effects of the performance of the OECD national economies and agricultural sectors on the farm producer support for the years 1986 to 2009. The study is complementary to the large amount of microeconomic research that highlights the importance of support to agricultural industry. Data for the analysis are taken from the OECD Producer and Consumer Support Estimates database and the World Bank World Development Indicators 2010 database. The Producer Support Estimate - PSE (expressed in absolute value, in percent of the total farm revenues and per 1 hectare of agricultural land) was taken as the dependent variable, whereas the selected indicators describing the performance of the economies (e.g. GDP per capita, unemployment, fiscal balance, government debt, government expense and tax revenue, exchange rate, agriculture share in GDP and employment, agricultural raw materials exports and imports) were the independent variables. Utilizing these variables, a simple linear regression analysis was conducted and resulted in many significant associations. In the period analyzed, there was a wide gap between the most and least farm supporting countries in terms of the annual average percentage PSE and the PSE per hectare. Substantial differences between the countries in the variability of the PSE over the time occurred. The empirical results obtained from the regression models reveal, among other, that when the countries were becoming richer, the percentage PSE was generally decreasing. Mixed results were obtained for the relationship between the percentage PSE and unemployment, as in some countries it was negative, while in the others positive. Expansionary fiscal policy exerted opposite effects on the PSE in different countries. Labour productivity in agriculture was inversely correlated with the percentage PSE.

Integration of the SMED for the improvement of the supply chain management of spare parts in the food sectorOriginal Paper

Jorge LOZANO, Juan Carlos SAENZ-DIEZ, Eduardo MARTINEZ, Emilio JIMENEZ, Julio BLANCO

Agric. Econ. - Czech, 2017, 63(8):370-379 | DOI: 10.17221/69/2016-AGRICECON

The Single Minute Exchange of Die (SMED) methodology is well-known. A great variety of studies in the field of manufacturing and production process use it, but there are few applications of this methodology in the area of the supply chain management. In the paper, the philosophy of the SMED methodology is applied to the part of the supply chain that includes the spare parts and fixtures in the food sector. This involves studying the relationship with the supplier of the installation of spare parts and fixture on the machine. The study shows how the spare parts management has several phases: the coordination and purchase of the spare parts to the supplier, the storage of these spare parts, the coordination of these spare parts and the scheduled maintenance, and the installation of these spare parts on the machine. The implantation of the developed working methodology has obtained a relevant improvement in the coordination and management of the spare parts. In such a way, that storage time has been reduced (inside the company's storages) and the performance has been increased, focusing on and detailing the maintenance task and scheduling the available resources.

Investigation of solar-powered drip irrigation: The case study of the Jordan ValleyShort Communication

Christoforos Perakis, George Kyriakarakos, Nabeel Bani Hani, Shaker Hammad, Markos Damasiotis

Res. Agr. Eng., 2017, 63(4):168-171 | DOI: 10.17221/12/2016-RAE

Agriculture is the sector that consumes by far most water globally. Much research efforts aim at minimizing losses through the use of drip irrigation. Rural agricultural areas often do not have access to a main electrical grid to power the pumps needed for drip irrigation; it reduces the options in paying for a grid extension, getting a diesel generator or investing in an off-grid renewable energy system. In this paper, these alternatives are assessed technically and economically under real world conditions through the Jordan Valley case study. The results show that the autonomous photovoltaic (PV)-battery system is preferable to the use of a diesel generator, as well as it is preferable to the main grid extension in many cases depending on the cost of grid electricity and distance from the grid. For current subsidized grid electricity retail price to farmers, the PV-battery system becomes more attractive above a 300 m distance from the grid, while if the actual cost of electricity production in Jordan is taken into account, then it breaks even to 128 m.

Silvicultural strategies for adapting planted forests to climate change: from theory to practice

W.L. Mason, M. Petr, S. Bathgate

J. For. Sci., 2012, 58(6):265-277 | DOI: 10.17221/105/2011-JFS

Adapting forests to climate change involves silvicultural measures such as use of a range of species and the fostering of mixed stands. We tested these in a Sitka spruce forest in southern Scotland, employing the Ecological Site Classification to match suitability of 24 species to six climatic and edaphic variables under values of accumulated temperature and moisture deficit projected for a medium emissions scenario for the present century. Both median and 90th percentile values were contrasted. In the first case there was a small change in species suitability with Sitka spruce, noble fir, downy birch, sycamore and aspen being the most suitable species. When the 90th percentile values were employed, the suitability of Sitka spruce and similar conifers had declined by the 2050's due to soil moisture deficits. The actual performance of a range of species in a long-term experiment on a similar, warmer site showed several productive conifers including Sitka spruce that maintained reasonable growth when planted in mixture. Mixed plots were developing into pure stands of the most productive species. Species diversification was the most practical adaptation measure for this forest and should concentrate on areas of the greatest risk like south-facing slopes with free-draining soils.

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.

Negative correlations between the susceptibilities of Czech and Slovak pollen beetle populations to lambda-cyhalothrin and chlorpyrifos-ethyl in 2014 and 2015Original Paper

Marek Seidenglanz, Jana Poslu¹ná, Pavel Kolaøík, Jiøí Rotrekl, Eva Hrudová, Pavel Tóth, Jiøí Havel, Eva Plachká, Ján Táncik, Kamil Hudec

Plant Protect. Sci., 2017, 53(2):108-117 | DOI: 10.17221/187/2015-PPS

Sixty-five Czech Meligethes populations were tested against lambda-cyhalothrin and chlorpyrifos-ethyl in 2014. In 2015, totally sixty Meligethes populations, some of which sampled also in Slovakia, were tested against the two insecticides. Adult vial tests by IRAC (Insecticide Resistance Action Committee) were used for testing (No. 011 v. 3 for lambda-cyhalothrin and No. 025 for chlorpyrifos-ethyl). For each of the tested populations the LC50, LC90, and in 2015 also LC95 values were determined for both these insecticides. Correlation analyses were made with transformed (log10 transformation) LC values. No significant correlation was recorded between the LC50 values. Contrary to that, significant (P < 0.05) negative (r values for negative) correlations were recorded between the LC90 and LC95 values. Pyrethroid resistance in pollen beetle populations should indicate their slightly higher susceptibility to chlorpyrifos-ethyl.

Comparison of qualitative and quantitative properties of the wings, necks and offal of chicken broilers from organic and conventional production systemsOriginal Paper

F.A.A. Abdullah, H. Buchtova

Vet Med - Czech, 2016, 61(11):643-651 | DOI: 10.17221/286/2015-VETMED

The aim of the present study was to investigate qualitative and quantitative properties of wings, offal (liver, heart and gizzard) and necks of chickens from organic and conventional production systems, currently available on the market for Czech consumers. Production properties (yield and weight), surface colour (lightness, redness, yellowness) and chemical indicators (dry matter, total protein, net protein, collagen, hydroxyproline, fat, ash and phosphorus) were evaluated in fresh chicken broilers. Conventionally produced chickens had higher carcass yields but higher wing yields and weights were observed in organic broilers. The skin, bones, tip (left wings) and the meat with skin (right wings) of organic broilers were heavier (P < 0.05) than those of conventional chickens. The dry matter and total protein content of deboned organic broiler wings (meat with skin) was greater (P < 0.01) than those of conventional wings. Similarly as for yields, the offal (heart, gizzard) and necks of organic chickens had significantly (P < 0.01) higher weights in comparison with conventional chickens. Colour indicators showed that the external surface of the livers, necks and gizzards (muscle) from organic chickens were darker (lightness; P < 0.01). Total protein content in livers, hearts and necks of organic chickens was greater; fat content in the livers and necks of organic broilers was also higher (P < 0.05) than those of conventional broilers. The ash and phosphorus in the necks of conventional broilers was higher (P < 0.05) than in organic chickens. This study indicates that the quantity and quality of offal and neck from organic broilers are slightly superior compared to conventional chickens.

Germination of Corylopsis seeds evaluated by X-ray imaging and cold stratificationOriginal Paper

Ji Hee Kim, Kyung Ok Kim, Ae Kyung Lee, Mark S. Roh, Jeung Keun Suh

Hort. Sci. (Prague), 2017, 44(2):105-111 | DOI: 10.17221/194/2015-HORTSCI

Effects of immersing seeds in water and X-ray imagining on germination of Corylopsis seed were investigated. Seeds that sank or floated were collected after immersing in water for 5 min, 4 h or 16 h, and germinated with or without 5°C cold stratification (CS). In C. coreana and C. sinensis var. calvescens, 52% and 89%, respectively, of seeds that sank immediately developed embryos and cotyledons germinated. Germination of C. sinensis var. calvescens seeds that sank after 16 h increased to 45% after the first CS treatment, as compared to 12% without CS. Immersing seeds in water for 16 h to collect full and mostly full seeds is recommended. X-ray imaging coupled with immersion is effective technique to select viable seeds. Dormancy could be partially released by immersing seeds in water for 16 h; however, germination was improved after CS.

Soil mineral nitrogen and the rating of CaCl2 extractable nutrientsOriginal Paper

Remigiusz £UKOWIAK, Przemys³aw BAR£ÓG, Witold GRZEBISZ

Plant Soil Environ., 2017, 63(4):177-183 | DOI: 10.17221/92/2017-PSE

It was assumed that the determination of the mineral nitrogen (Nmin) content in the 0.01 mol/L CaCl2 could rely on measurements of single form NO3--N, NH4+-N or both, and even including other extractable nutrients. This hypothesis was verified based on some primary data from 17 fields: ten with oilseed rape and seven with maize as indicatory crops during three consecutive seasons in a production farm in Górzno, Poland. The contents of NO3--N, NH4+-N, P, K, Mg and pH were measured in soil prior to the spring vegetation start and after a crop harvest (autumn). Phosphorus in spring and NH4+-N in autumn, were variables discriminating against the number of clusters. It was higher in cropping sequences (CSs) with maize than with oilseed rape. The reliability of Nmin determination and distribution between clusters in spring based only on NO3--N was fully corroborated for maize CSs. In autumn, irrespective of the CS, the decisive factor in Nmin prediction and distribution over clusters was the NH4+-N pool. This study resulted in the rating of CaCl2 extractable nutrients, indicating their availability status, shortage or excess, on the background of the Nmin temporary rating.

Effects of insecticides used against the European corn borer on thrips abundance on maizeOriginal Paper

Pawe³ Krystian Bere¶, Halina Kucharczyk, Dariusz Górski

Plant Protect. Sci., 2017, 53(1):44-49 | DOI: 10.17221/78/2016-PPS

The effect of a single chemical treatment against Ostrinia nubilalis (Hbn.) on thrips abundance on maize in south-eastern Poland was evaluated. Two insecticides: Karate Zeon 050 CS, containing lambda-cyhalothrin, and Proteus 110 OD, containing thiacloprid with deltamethrin, were tested. Maize was sprayed in the second ten days of July, during the abundant occurrence of O. nubilalis larvae, which coincided with the population peak of thrips on plants. The tested active substances showed high effectiveness against thrips, but a better effect, reflected in a decrease in thrips abundance, was found for the mixture of thiacloprid with deltamethrin. The tested insecticides significantly reduced the population of thrips for up to 14 days after treatment.

Protective effects of the antioxidants curcumin, ellagic acid and methionine on motility, mitochondrial transmembrane potential, plasma membrane and acrosome integrity in freeze-thawed Merino ram spermOriginal Paper

A.D. Omur, K. Coyan

Vet Med - Czech, 2016, 61(1):10-16 | DOI: 10.17221/8677-VETMED

The aim of this study was to determine the effects of curcumin, ellagic acid and methionine on sperm parameters following the freeze-thawing of Merino ram semen. Ejaculates were collected via an artificial vagina from four Merino rams, evaluated microscopically and pooled at 37 °C. The pooled semen samples were diluted in a Tris-based extender and separated into groups containing curcumin (1, 2, 4mM), ellagic acid (1, 2, 4mM), methionine (1, 2, 4mM) and no antioxidant (control). The diluted semen was cooled to 5 °C slowly and equilibrated for 3 h. After the equilibration, the samples were frozen in liquid nitrogen vapour, and plunged into liquid nitrogen (-196 °C) for storage. Frozen straws were thawed at 37 °C for 30 s in a water bath for microscopic sperm evaluation, individually. All antioxidants led to a higher percentage of sperm motility in comparison to the control group. The freezing extender supplemented with methionine (1mM), curcumin (1 and 2mM) and ellagic acid (1 and 2mM) led to higher percentage of sperm plasma membrane integrity when compared to other groups (P < 0.05). Antioxidant supplementation also resulted in a higher percentage of sperm acrosome integrity in comparison to the control. Methionine, curcumin and ellagic acid (1mM: 27.7 ± 2.4, 28.0 ± 2.1 and 26.8 ± 2.0) groups provided higher protection in terms of sperm mitochondrial activity when compared to other groups (P < 0.05). The findings of this study show that varying concentrations of curcumin, methionine and ellagic acid have markedly different effects on the spermatological variables under study.

Grain sorghum transpiration efficiency at different growth stagesOriginal Paper

Sushil THAPA, Bob A. STEWART, Qingwu XUE

Plant Soil Environ., 2017, 63(2):70-75 | DOI: 10.17221/796/2016-PSE

Transpiration efficiency (TE) is an important physiological trait associated with drought tolerance of plants. Currently, little is known about the grain sorghum TE and its dynamics with the age of plants. To compare the sorghum TE at different growth stages, four studies (two in the greenhouse and two in the growth chamber) were conducted under controlled environmental conditions. Plants were grown in lid-covered boxes and harvested at six-leaf, flag leaf, grain filling and maturity stages. The mean shoot TE values were 4.47 and 4.10 kg/m3 for two greenhouse studies, and 4.85 and 4.30 kg/m3 for two growth chamber studies, respectively. The shoot TE was not different among four growth stages within each study, suggesting that sorghum plants used the same amount of water per unit of biomass production for different growing periods. Because crops grown under dryland environments often run out of water during reproductive periods, result supports the ideas that soil water availability at later growth stages is crucial to achieve the yield potential of dryland sorghum.

Responses of rice yield and the fate of fertilizer nitrogen to soil organic carbonOriginal Paper

Weifu PENG, Yongjun ZENG, Qinghua SHI, Shan HUANG

Plant Soil Environ., 2017, 63(9):416-421 | DOI: 10.17221/389/2017-PSE

Soil organic carbon (SOC) plays a critical role in rice production, but its feedback to the fate of fertilizer nitrogen (N) is not clear. In this study, a pot experiment was conducted to investigate the responses of rice yield and the fate of fertilizer N to different SOC levels using 15N-labelled urea. The results showed that rice biomass, yield and the total N uptake increased significantly with increasing SOC content. Both rice N uptake from soil and urea increased significantly with increasing SOC content. The recovery rate and residual rate of fertilizer N improved significantly with increasing SOC content, leading to a reduced rate of not-specified fertilizer N. Therefore, it was concluded that high SOC could not only improve rice yield and fertilizer N recovery, but also could increase the retention of fertilizer N and decrease the not-specified N in the paddy soil.

Trade practices of retail chains as far as the transaction cost analysis in relationships manufacturer - retailer are concerned in the milk industry

Jaroslav KITA, Katarína MÁZIKOVÁ, Marta GROSSMANOVÁ, Pavol KITA

Agric. Econ. - Czech, 2012, 58(6):264-274 | DOI: 10.17221/61/2011-AGRICECON

The primary purpose of this article is to discuss the trade practices used by retail chains from the point of view of the possible solutions of conflicts between the members of the distribution channel, which have an influence on selling prices for the end users. It is based on the knowledge of the theory of the transaction cost analysis, which makes it possible for the members of the distribution channel to make decisions on the number of forms of the organization in order to realize their activities successfully. In this framework and using the example of milk, the article shows the trade practices of retail chains to improve the relationships manufacturer - retailer in the Slovak consumer market.

Transformation of the agricultural financial system in the age of globalisationOriginal Paper

Anna BRZOZOWSKA, Dagmara BUBEL, Antonina KALINICHENKO, Larysa NEKRASENKO

Agric. Econ. - Czech, 2017, 63(12):548-558 | DOI: 10.17221/155/2016-AGRICECON

The paper is an attempt to address the advantages and risks connected with the wave of financial globalisation, with a focus on its impact on financial policy in European agriculture. The aim of the paper is to identify the basic conditions of the functioning and change of the financial system of agriculture under the conditions of the globalisation of financial markets. Financial globalisation, also referred to as financial integration or openness, is understood as an increase in global ties and interdependences caused by capital flows. Potentially, globalisation can bring a lot of benefits, which are manifested in an acceleration of economic growth and decreased fluctuation in consumption, which should further improve the level of overall prosperity. On the other hand, however, internationalisation of financial flows entails a range of threats, including the possibility of crisis.

Translocation of the upper soil layer in multiple operations of seedbed preparationOriginal Paper

Petr Novák, Josef Hùla

Res. Agr. Eng., 2017, 63(10):S46-S52 | DOI: 10.17221/40/2017-RAE

Translocation of tracers incorporated into the upper layer of topsoil was evaluated in the course of seedbed preparation for winter wheat. Aluminium cubes with the edge length of 16 mm were used as tracers that were placed into the soil before its tillage into furrows perpendicular to the direction of passes. After the passes of the OPALL-AGRI combined cultivator, the tracers were searched and marked using a metal detector. The translocation of tracers was evaluated during multiple passes on flatland and on the slope. During the seedbed preparation on the slope, downslope and upslope passes in a fall line direction were chosen. Results of the tracers movement measuring that simulate the soil particle translocation indicate a pronounced movement of the upper layer of topsoil during multiple downslope passes of the combined cultivator. A significant translocation was also observed after passes on flatland. A significantly smaller lengthwise translocation of tracers was found out at upslope passes. The type of translocation on flatland and upslope was quite similar, on the other hand, downslope movement was much larger. The upslope passes were found to have a very limited function with regard to the correction of the undesirable downslope movement of soil particles that occurs in the course of tillage.

Structure of the montane taiga forests of West Khentii, Northern Mongolia

M. Mühlenberg, J. Appelfelder, H. Hoffmann, E. Ayush, K.J. Wilson

J. For. Sci., 2012, 58(2):45-56 | DOI: 10.17221/97/2010-JFS

Studies were undertaken to investigate the composition, structure and diversity of four different types of North Mongolian montane forest near the southern border of the taiga. These forest types, classified as willow-poplar, larch-birch, spruce-fir and Siberian-pine forests, were found to be significantly different with respect to the elevational gradient. In the study area, two fire regimes could be distinguished at lower and drier elevations, frequent surface fires resulted in less diverse forests comprising coniferous species, which in their adult form were found to be fire-resistant, burn-colonizing and light-demanding deciduous tree species. In contrast, the forests colonizing the moist, higher elevations and shaded slopes had a higher diversity of tree species with greater basal area, higher proportion of deadwood, and more regenerating trees; here the coniferous shade trees experienced infrequent but destructive treetop fires. Overall, our results showed that the four forest types differed in composition according to the tree species, diameter and height classes.

Geographical origin of honey from eight sub-regions of Bosnia and HerzegovinaFood Analysis, Food Quality and Nutrition

Vildana Alibabiæ, Melisa Ora¹èanin, Nada Vahèiæ

Czech J. Food Sci., 2017, 35(6):488-495 | DOI: 10.17221/82/2017-CJFS

Principal component analysis (PCA) and cluster analysis (CA) were used to define the geographical origin of three types of monofloral (chestnut, linden, and acacia), two types of multifloral (meadow and mixed), and forest honey produced over two consecutive harvest seasons in the Una-Sana Canton (Bosnia and Herzegovina), which is geographically divided into eight sub-regions. Statistical analysis was applied to the measurement of physico-chemical and sensory parameters, as well as micro- and macronutrient (K, Na, Mg, Zn, Fe, Mn, and Al) content, along with some heavy metals (Cd, Pb, and As). Using the PCA method the characteristic parameters for all eight sub-regions were determined, while the CA grouping method was used to determine the characteristic parameters for six sub-regions. Chestnut honey is predominantly found in Cazin, chestnut and linden honey in Bosanska Krupa, chestnut and acacia honey in Bu¾im, acacia honey in Sanski Most, mixed honey in Velika Kladu¹a and forest honey in Kljuè.

Evaluation of combining ability in ornamental sunflower for floral and morphological traitsOriginal Paper

Sandra CVEJIÆ, Sini¹a JOCIÆ, Emina MLADENOVIÆ, Milan JOCKOVIÆ, Dragana MILADINOVIÆ, Ivana IMEROVSKI, Aleksandra DIMITRIJEVIÆ

Czech J. Genet. Plant Breed., 2017, 53(2):83-88 | DOI: 10.17221/50/2016-CJGPB

Ornamental sunflowers are widely cultivated for use as cut flowers and/or as garden plants. The objective of the study was to investigate breeding values of new F1 ornamental sunflower hybrids using incomplete diallel crossing of four ornamental inbred lines: Heliopa, Talia, Iskra and Neoplanta. Six traits important for ornamental market use were studied. Additive gene effects prevailed in most tested traits except for lateral floral diameter and duration of lateral flowering, which exhibited non-additive effects. The results indicated that the Talia × Neoplanta hybrid combination was the most promising for cut flowers due to long and strong branches, relatively big lateral flowers while Heliopa × Iskra and Heliopa × Talia hybrids were suitable for use as garden plants due to strong plant habit, long flowering time and desirable plant height. The results obtained from this study will be helpful for further ornamental sunflower breeding.

Weed suppression and early sugar beet development under different cover crop mulchesOriginal Paper

Christoph Kunz, Dominic J. Sturm, Markus Sökefeld, Roland Gerhards

Plant Protect. Sci., 2017, 53(3):187-193 | DOI: 10.17221/109/2016-PPS

Field experiments were conducted at two locations in 2014-2015 and 2015-2016 to investigate the weed suppressive ability of cover crop mulches in sugar beets. Three cover crops and two cover crop mixtures were tested in all four experiments. Weed densities ranged from 2 up to 210 plants/m2 in Chenopodium album L. and Stellaria media (L.) Vill. as predominant species. Sinapis alba grew significantly faster than Vicia sativa, Raphanus sativus var. niger, and both cover crop mixtures. Sinapis alba, Vicia sativa, Raphanus sativus var. niger reduced weed density by 57, 22, and 15% across all locations, respectively. A mixture of seven different cover crops reduced weed emergence by 64% compared to the control plot without cover crop mulch. Early sugar beet growth was enhanced by all mulch treatments in 2015 and decelerated in 2016.

Pax5 as a potential candidate marker for canine B-cell lymphomaOriginal Paper

S. Sirivisoot, S. Techangamsuwan, S. Tangkawattana, A. Rungsipipat

Vet Med - Czech, 2017, 62(2):74-80 | DOI: 10.17221/100/2016-VETMED

Immunophenotyping is a valuable method for prognosis in canine malignant lymphoma. The general B-cell marker is CD79a; however, Pax5 or B-cell specific activator protein, a transcription factor that controls B-cell identity and cell maturation, could also be used as a B-cell indicator in canine lymphomas. This study aimed to use Pax5, CD79a and CD3 expression in immunohistochemistry of spontaneous canine lymphomas, in order to carry out diagnosis and histopathological classification according to the World Health Organization guidelines. Forty-six retrospective cases including 33 multicentric, eight extranodal, and five alimentary lymphomas in dogs were immunostained by anti-Pax5 and anti-CD79a antibodies for B-cell identification, and anti-CD3 antibody for T-cell identification. T-cell lymphomas (CD3+/Pax5-/CD79a-) accounted for 30.43% of cases (14/46), and four of the lymphomas (28.57%) presented with CD3+/Pax5-/CD79a+. Conversely, B-cell lymphomas (CD3-/Pax5+/CD79a+) accounted for 69.57% of cases (32/46) and 12.5% of these (4/32) showed only Pax5-positive cells (CD3-/Pax5+/CD79a-). Therefore, in dogs, Pax5 appears to be a more useful marker for staining all B-cell subtypes compared to CD79a. Immunophenotyping with both Pax5 and CD3 are necessary for lymphoid lineage identification in canine lymphomas.

Evaluation of the contraceptive effects of carprofen, flunixin meglumine and meloxicam in ratsOriginal Paper

Z. Paksoy, A. Kirbas

Vet Med - Czech, 2017, 62(5):274-278 | DOI: 10.17221/67/2016-VETMED

The objective of this study was to determine the suitability of carprofen, flunixin meglumine and meloxicam for use in emergency contraception. Forty-eight pregnant Sprague-Dawley rats were used as material. Five groups were subjected to treatments while one group served as a control. The numbers of animals in each group were equal (n = 8). Treatment groups were administered carprofen (10 mg/kg, single or double dose, s.c.), flunixin meglumine (5 mg/kg, single or double dose, i.m.) and meloxicam (2 mg/kg, a single dose, s.c.) on the third day after mating. The control group received saline. The rats were sacrificed on Day 7 of gestation. Luteal spots and implantation sites were recorded. Pre-implantation loss was calculated by subtracting the number of luteal spots from the number of implantation sites. Compared with the control, the administration of flunixin meglumine (double dose), carprofen (double dose) and meloxicam highly significantly decreased the implantation rate (P < 0.001). Single dose administration of flunixin meglumine and carprofen led to significant decreases (P < 0.01). In conclusion, this study indicates that carprofen, flunixin meglumine and meloxicam treatment cause a decline in implantation rate in rats.

First report of the molecular detection of Ancylostoma caninum in Lahore, Pakistan: the threat from petsOriginal Paper

A. Rehman, R. Akhtar, H. Akbar, F. Riaz, I. Rashid, W. Shehzad, S. Islam, A.A. Bajwa, M. Waqas

Vet Med - Czech, 2017, 62(10):559-564 | DOI: 10.17221/14/2017-VETMED

The molecular prevalence of Ancylostoma caninum was determined in stray and pet dogs in Lahore, Pakistan from July 2014 to August 2015. A total of 500 dog faecal samples were first evaluated using a sedimentation technique and further through a PCR assay targeting the ITS-2 region of the A. caninum genome. Overall, 130 (26%) samples were positive for hookworm infestation by microscopic examination. Only microscopically positive samples were processed for PCR and 89 (17.6%) were positive for A. caninum. Sequence analysis of amplicons showed 100% homology with A. caninum and the genotypes clustered in one clade with Brazilian A. caninum hookworms. There was a significantly (P < 0.05) increased prevalence in male dogs younger than six months old. Labrador retrievers had higher A. caninum incidence compared to German shepherds and other breeds. To the best of our knowledge, this is the first report of the molecular prevalence of A. caninum in dogs in Pakistan. The novel results of the present study allow us to conclude that A. caninum is more prevalent in pet dogs, especially puppies, and this can be a potential threat for humans that come into contact with such animals. Therefore, the routine monitoring of pets, especially the more susceptible breeds, is essential for disease control.

The long-term changes in soil organic matter contents and quality in ChernozemsOriginal Paper

Jan HORÁÈEK, Pavel NOVÁK, Peter LIEBHARD, Eduard STROSSER, Mária BABULICOVÁ

Plant Soil Environ., 2017, 63(1):8-13 | DOI: 10.17221/274/2016-PSE

For the purposes of assessment of long-term changes, two sets of Chernozems soil samples were analysed and compared in parallel: 'old' file samples obtained during the Soil Survey 1960-1970 in the former Czechoslovakia and a 'present' (2013) set of samples from exactly the same sites as the archive samples. The recently collected samples revealed worse qualitative parameters (lower humic acid to fulvic acid (HA/FA) ratios and higher colour quotient Q4/6 values) than the file samples, for all the localities. On the other side, the quantitative soil organic matter (SOM) parameters (oxidizable carbon (Cox) and all its determined components) showed contrary results. The amount of total SOM at the same sites is higher now than it was about 50 years ago. It can be concluded that the current decline in SOM quality in Chernozems is partly compensated for by higher accumulation of SOM in the soils. All the analysed Chernozem samples were found to have much worse qualitative SOM parameters than the values mentioned for this soil type in the older literature. However, a comparison of the current data and the file data of Chernozem SOM quality can still be considered an open issue and require more complex research.

Legal and environmental aspects of authorizing edible insects in the European UnionOriginal Paper

Nicole GRMELOVA, Tomas SEDMIDUBSKY

Agric. Econ. - Czech, 2017, 63(9):393-399 | DOI: 10.17221/3/2016-AGRICECON

Nutritional values of different foodstuffs have been examined in various studies on a number of occasions. However, so far, little attention has been paid to the legal aspects of introducing edible insects in the European Union. Yet, the rearing of this mini-livestock for food and feed has a potential of developing into a new agricultural sector, which is sustainable, unlike the breeding of the traditional livestock. The aim of this paper is to provide a comprehensive overview of the legal background of authorizing edible insects in the European Union, taking into account the environmental impacts thereof. At present, the Member States are free to regulate this field, however, only until the transitional period established by the European Union (EU) rules has expired, since the EU wide regulation for authorizing edible insects is to be introduced as of 1st January 2018.

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