Fulltext search in archive



« advanced mode »

 previous    ...   101   102   103   104   105  106   107   108   109   110   ...    next 

Results 3121 to 3150 of 5716:

Agricultural performance in the V4 countries and its position in the European UnionOriginal Paper

Luboslav SZABO, Miroslav GRZNAR, Michal ZELINA

Agric. Econ. - Czech, 2018, 64(8):337-346 | DOI: 10.17221/397/2016-AGRICECON

The paper is devoted to an analysis of the development of agrarian farms in Visegrad Group (V4) countries, primarily in terms of results and the most important production inputs of production factors and their efficiency in the period from 2004 to 2013 based on the EU Farm Accountancy Data Network (FADN). The results of the analysis show that if farms in the V4 countries want to achieve the same performance as developed countries, they must invest more in purchasing intensification factors and adjust the structure of assets production specification. It will be necessary to stop the reduction in the numbers of livestock and to strive for growth in gross farm income, mainly through the processing of agricultural raw materials.

Identification of biphenyls - contaminants responsible for off-flavour in soft drinksFood Chemistry and Safety

Iveta ŠÍSTKOVÁ, Vojtěch KRUŽÍK, Aleš RAJCHL, Helena ČÍŽKOVÁ

Czech J. Food Sci., 2018, 36(1):16-21 | DOI: 10.17221/297/2017-CJFS

Off-flavour in soft drinks is one of the main threats to manufacturers, which can result in expensive recalls, and discredit the brand. Off-flavours can occur for a variety of reasons (e.g . chemical contamination of raw material). The presented case study has proved there is a relationship between the identification of biphenyl and its derivatives in the used preser vative (benzoate) and off-flavours in the drink . The project consisted of three phases: (1) the assessment of the probable cause of off-f lavours based on sensor y evaluation and GC-MS -Olfactometr y profiling of volatiles; (2) the quantification of biphenyls and the characterisation of their sensor y properties; (3) the screening of commercially available benzoates for the presence of biphenyls. Based on the odour threshold obtained by GC-O (0.03 mg/l for 4-methyl-1,1'-biphenyl and 0.02 mg/l for biphenyl in an aqueous solution) and the common benzoate content in soft drinks (0.14 g/l), the 'non-obser vable sensory' levels of contamination were determined to be maximally 0.143 mg/g of benzoate for biphenyl and 0.214 mg/g of benzoate for 4-methyl-1,1 '-biphenyl .

Effect of yeast harvest moment on a brewing process in beer produced on an industrial scaleFood Microbiology and Safety

Krzysztof KUCHARCZYK, Tadeusz TUSZYŃSKI, Krzysztof ŻYŁA

Czech J. Food Sci., 2018, 36(5):365-371 | DOI: 10.17221/157/2017-CJFS

The aim of this study was to determine the effect of yeast harvest timing on the process performance, total yeast count and the content of volatile components in beer. The experiments were performed on an industrial scale with fermentation and maturation conducted in three fermentation tanks with a capacity of 3800 hl (cylindro-conical tanks - CCT). All processes were carried out using the same technological conditions. The worts were aerated with sterile air and yeast after the second fermentation (third generation) was added. The duration of the maturation phase and the processes of the yeast harvest were conducted at different times (1st, 4th and 6th day) after finishing the primary fermentation process. During fermentation and maturation, changes in the contents of the extract, yeast, and volatile components were investigated. These experiments showed that the use of different times during yeast harvest had a significant impact on the course of fermentation and maturation and impact on the total yeast count during the maturation process and on the amount of volatile components in beer. With a delay in the start of yeast cropping, the content of acetaldehyde and vicinal diketones decreased and the content of esters increased. The timing of the yeast crop significantly influenced the final beer quality.

An unusual foreign body in a cat: a case reportCase Report

C.F. Agudelo, Z. Filipejova, L. Frgelecova, O. Sychra

Vet Med - Czech, 2018, 63(4):198-202 | DOI: 10.17221/8/2018-VETMED

Foreign bodies that affect airways are a well-recognised problem in small-animal practice. Cats in par­ticular, may be especially at risk of aspiration due to their predatory behaviour. Here, we report a case of an insect as a foreign body, namely a beetle in the tracheal bifurcation of a cat. Radiographs suggested a wide range of possibilities for differential diagnosis, but the presence of a foreign body was initially suspected. A final diagnosis was not pursued by the owner and the cat was euthanised. The presence of a summer chafer was then confirmed. To the authors' knowledge, this is the first time such a foreign body and radiographic findings are reported in the literature.

Surgical correction of persistent right aortic arch in a cat and three dogsOriginal Paper

M. Caliskan, P. Can, I.G. Sancak, O. Besalti

Vet Med - Czech, 2018, 63(11):522-526 | DOI: 10.17221/43/2018-VETMED

We here report the diagnosis and surgical outcomes of a cat and three dogs with persistent right aortic arch causing oesophageal enlargement. The chief complaint in all cases was regurgitation just after solid food intake. Barium oesophagographic examinations revealed enlarged oesophaguses cranial to the heart and strictures due to arteriosus ligament constriction of the oesophagus. Surgical correction was carried out using left fourth intercostal thoracotomy and severance of the ligamentum arteriosum. The cases frequently displayed residual clinical signs and still required modified diets after a mean follow-up period of 8.6 months, but owner satisfaction was acceptable.

Structural and functional apple genomics and its application in breedingReview

Sylwia Elzbieta KELLER-PRZYBYŁKOWICZ

Czech J. Genet. Plant Breed., 2018, 54(4):147-153 | DOI: 10.17221/59/2017-CJGPB

The present paper summarized some knowledge of modern technologies, applied in apple (Malus domestica) genome studies. New generation sequencing allowed single nucleotide polymorphism (SNP) chip technologies for genotyping, description of functional apple genes, characterization of the evolutionary results in apple genome fragment transition, as well as phylogenetic reconstruction of the genus Malus, being the confirmed progeny of M. sieviersii. Based on these technologies, newly developed putative markers may give the most important biological data such as age, geographical origins, tissue type determination, and external visible characters. The new generation genotyping platforms, representing very high efficiency, are now successfully applied for random apple genome-wide association (GWA) studies as well pedigree-based analysis and marker-assisted selection (MAS).

New highly aggressive pathotype 354 of Plasmopara halstedii in German sunflower fieldsOriginal Paper

Otmar Spring, Reinhard Zipper

Plant Protect. Sci., 2018, 54(2):83-86 | DOI: 10.17221/99/2017-PPS

Downy mildew of sunflower is a recurrent threat for crop production and a permanent challenge for resistance breeding. Since 2016, a new pathotype of the oomycete Plasmopara halstedii has been found in fields of cutting sunflower in Southern Germany. Infection assays based on sunflower differential lines identified the pathogen as pathotype 354 which has not yet been described anywhere else. The new pathotype readily infected the host lines Ha-304, RHA-265, PM13, 803-1, and Ha-335, whereas RHA-274, PM17, HAR-4, and QHP1 remained uninfected. It is the first isolate of Plasmopara halstedii to overcome the Pl-6 resistance of sunflower in Germany.

Ribosomal protein SA and its pseudogenes in ruminants: an extremely conserved gene familyOriginal Paper

A. Van den Broeke, M. Van Poucke, A. Van Zeveren, L.J. Peelman

Czech J. Anim. Sci., 2013, 58(2):79-90 | DOI: 10.17221/6618-CJAS

The ribosomal protein SA (RPSA), also known as 37-kDa laminin receptor precursor/67-kDa laminin receptor (LRP/LR), has been identified as a multifunctional protein, playing an important role in multiple pathologies like cancer and prion diseases. Since RPSA is involved in the binding and internalization of the prion protein, mutations in the ovine RPSA gene, influencing the RPSA-PrPC/PrPSc binding, can potentially play a part in the resistance to prion diseases. Our goal was to further characterize the complex RPSA gene family and to detect structural mutations which can play a role in this disease. In a prior study, 11 ovine pseudogenes were detected experimentally. As the whole genome shotgun ovine genome became accessible, an in silico genome-wide screening was performed and 37 new pseudogenes (36 processed and one semi-processed pseudogene) were detected, bringing the total to 48 ovine RPSA pseudogenes. Additionally, the complete bovine genome was screened in silico and 56 pseudogenes were identified. Once these sequences were known, it was possible to analyze the presence of mutations in the coding sequence and exon-flanking regions of the ovine functional full-length RPSA gene without the interference of pseudogenic sequences. Nineteen mutations were found: one in the 5' UTR, a silent one in the coding region, and seventeen in the exon-flanking regions, including an interesting mutation in the SNORA62 gene, localized in intron 4 of RPSA, leading to potential ribosomal defects. Structural mutations of the RPSA gene can be ruled out to play a role in transmissible spongiform encephalopathies but regulatory mutations still can have an effect on these diseases.

The effect of herbicides and biostimulants on sugars content in potato tubersOriginal Paper

Krystyna ZARZECKA, Marek GUGAŁA

Plant Soil Environ., 2018, 64(2):82-87 | DOI: 10.17221/21/2018-PSE

The objective of the present work was to determine changes in total sugars, reducing sugars and sucrose content in potato tubers under conditions involving an application of biostimulants and herbicides. Research material included table potato tubers obtained in a three-year field experiment. The experiment was a split-plot design with three replicates. The factors were as follows: factor I - three table potato cultivars (Bartek, Gawin and Honorata), factor II - five methods of biostimulant and herbicide application (1. control - without biostimulants or herbicides; 2. Harrier 295 ZC (linuron + chlomazon); 3. Harrier 295 ZC (linuron + chlomazon) and growth regulator Kelpak®SL; 4. Sencor 70 WG (metribuzin); 5. Sencor 70 WG (metribuzin) and growth regulator Asahi®SL. Variance analysis demonstrated that total sugars, reducing sugars and sucrose content were affected by the biostimulants and herbicides applied as well as cultivars and weather conditions. Compared with control, a significant increase in total sugars followed an application of Sencor 70 WG as well as Sencor 70 WG and the growth regulator Asahi®SL whereas reducing sugars and sucrose content significantly increased after Sencor 70 WG and the growth regulator Asahi®SL were applied.

Effect of using selected growth regulators to reduce sunflower stand heightOriginal Paper

Tomáš SPITZER, Jan BÍLOVSKÝ, Jan KAZDA

Plant Soil Environ., 2018, 64(7):324-329 | DOI: 10.17221/213/2018-PSE

Influence of plant growth regulators chlormequat chloride, chlormequat chloride + ethephon, ethephon, and mepiquat chloride + prohexadione-Ca + pyraclostrobin + ammonium sulphate (BAS67800F + BAS00800D) on decreasing sunflower height was evaluated. It was determined that sunflower height can be reduced by as much as 30 cm. In the case of BAS67800F + ammonium sulphate, there was a slight difference between application at BBCH 31-33 and BBCH 50-51, whereas for ethephon better application time was at BBCH 50-51. For chlormequat chloride, application at BBCH 31-33 was better, but height reduction did not endure until harvest. Flower head diameter shortly before harvest was not affected at any tested regulator. Flowering was delayed primarily at applications at BBCH 50-51.

Utilisation of the natural potential of rural areas for social inclusionOriginal Paper

Jakub HUSÁK, Helena HUDEČKOVÁ

Agric. Econ. - Czech, 2018, 64(4):149-162 | DOI: 10.17221/13/2016-AGRICECON

The paper presents selected results of the sociological research focused on social inclusive activities that use and are located in the natural environment of rural areas. The paper is based on the contemporary form of the concept of a fully integrated modern society, and deals with the implementation of this concept within the strategy of social inclusion in both the European and Czech context. The authors have created, based on secondary research, a typology of social inclusive activities within Czech rural areas. Primary research, consisting of a questionnaire survey, was used to study the awareness of these issues among the rural population. Based on the selected results of both the primary and secondary research, the authors conclude that a possible path to social inclusion, is, alongside specific social services, social farming, which harmonizes the potential of the rural natural environment with the attitudes of the rural population (the actors and observers of social inclusive activities within their locality).The ongoing research is focused on monitoring barriers to the development of this business sector, which are crucial for the rural actors.

Investigation of hepatitis A and E viruses in mussels collected from the Bosphorus, in Istanbul, Turkey - short communicationFood Microbiology and Safety

Huseyin YILMAZ, Utku CIZMECIGIL, Eda Altan TARAKCI, Ozge AYDIN, Aysun YILMAZ, Mehmet CALICIOGLU, Gurhan CIFTCIOGLU, Ali AYDIN, Kamil BOSTAN, Tansel SIRELI, Mine GUZEL, Asiye KARAKULLUKCU, Bekir KOCAZEYBEK, Wim van der POEL, Juergen RICHT, Nuri TURAN

Czech J. Food Sci., 2018, 36(3):215-220 | DOI: 10.17221/233/2017-CJFS

Hepatitis A and E viruses (HAV and HEV) are recognised as food- and water-borne infections and shellfish are a well-documented source of these viruses. The presence of HAV and HEV in mussels has not previously been investigated in Bosphorus, Istanbul, Turkey, and therefore the aim of this study was to investigate the frequency of HAV and HEV in mussels collected from this location. A total of 92 pooled samples representing 736 mussels originating along the Bosphorus coast were collected from fish distributors. RNA was extracted using the RNeasy Plant Mini Kit and a TaqMan real-time RT-PCR was performed using primers specific to HAV and HEV. Amongst the 92 pooled samples tested, 3 (3.3%) were found to be positive for HAV by the TaqMan real-time RT-PCR. No HEV was detected in any of the mussels tested. A 174 bp product was observed on gel electrophoresis with HAV positive samples detected by SYBR Green real-time PCR after reverse transcription. This product was sequenced and confirmed to contain HAV sequences by alignment using the data in GenBank. This is the first report describing the presence of HAV in mussels harvested in the Bosphorus, Istanbul, Turkey, indicating the potential contamination of aquatic environment and risk to public health.

A survey of feline trichomonosis suggests a low incidence of Tritrichomonas blagburni among cats in the Czech RepublicOriginal Paper

V. Ceplecha, V. Svobodova, C. Lendon, R. Husnik, K. Horackova, M. Svoboda

Vet Med - Czech, 2017, 62(5):269-273 | DOI: 10.17221/106/2016-VETMED

Tritrichomonas blagburni (previously called T. foetus) has been implicated as an aetiological agent of long-term large-bowel diarrhoea in cats in many countries worldwide. The aim of this study was to determine the presence of, and risk factors for T. blagburni among a cohort of cats living in different conditions in the Czech Republic. Samples were collected from 170 cats living in different environments. The InPouch™ TF-Feline medium method was used for diagnosis of feline trichomonosis. A single case (0.6%) with motile trichomonads identified as Pentatrichomonas hominis was found in a cat from a multi-cat household. Our study suggests that trichomonads and in particular, T. blagburni, infection may be much less common in the Czech Republic than in neighbouring countries, despite the inclusion of cats that were likely to be from higher-risk groups. A review of studies of the association of trichomonads and feline diarrhoea carried out in different countries revealed variation in the frequency of trichomonads detected. Different combinations of PCR or culture methods for screening or confirmation have been utilised, with or without species differentiation; however, this could not solely account for the variation in the occurrence between countries. From those studies where differentiation was performed, we calculated from the combined studies that T. blagburni occurred in six cats without diarrhoea (1.1%) and 47 cases with diarrhoea (5%). This finding supports an association with diarrhoea as well as the occurrence of asymptomatic cases. We note that in many studies, including our own, the occurrence of T. blagburni may well be underestimated and suggest that future studies use a combination of PCR screening of both faeces and faecal cultures, with differentiation of trichomonad species.

Field occurrence of avian infectious bronchitis virus in the Czech Republic and SlovakiaOriginal Paper

M. Klimcik, R. Currie

Vet Med - Czech, 2018, 63(3):137-142 | DOI: 10.17221/109/2017-VETMED

The epidemiological situation regarding the infectious bronchitis virus (IBV) population in Europe as well as the presence of predominant IBV strains is well described. The aim of this epidemiological study was to describe the real field situation in the Czech Republic and Slovakia, as no data are available for the last ten years. The study was also focused on differentiation between field IBV strains and vaccine/vaccine origin IBV strains in different poultry segments including backyard flocks. Between July 2013 and July 2016, cloacal, tracheal and/or visceral swab samples were collected from 145 Czech and Slovak chicken broiler, breeder and layer flocks. The majority of flocks was kept for production purposes, but to enable a more complete picture of the situation in the field backyard flocks with more than 50 birds were also included. As in other cases which were reported worldwide and based on collaboration with x-Ovo laboratories, samples were analysed using the real-time polymerase chain reaction (RT-qPCR) to detect the presence of the RNA of IBV. When positive, approximately 400 base pairs encoding the hypervariable region of the IBV S1 protein were sequenced. Sequencing results, cycle threshold values and vaccination history were used as criteria to try and distinguish vaccine strains from field strains. A significant percentage of all flocks presented clinical signs suggestive of IBV infection. From the total number of samples examined, 16.5% were negative. In 12.4% of the samples that did contain RNA from IBV, the genotype could not be determined. In most cases, this was due to the recovery of RNA quantities below the lower limit of detection of the sequencing PCR. The remaining positive samples predominantly contained RNA from IBV strains that belonged to the 4/91 - 793B - CR88 (44.7%), Massachusetts (30%), D274 - D207 (11.6%) and D388 - QX (8.7%) genotypes. Estimations indicated that approximately 23.9%, 48.4%, 58.3% and 0% of these detections, respectively, were vaccine strains. Infections with types UKR/27/2011, CK/CH/Guandong/Xindadi/0903 and K33/09 were observed sporadically. The results confirm that IBV infections are highly prevalent in Czech and Slovak chickens and that at least seven different IBV types were circulating during the monitored period. This underlines the necessity of providing flocks with a strong and broad protective immunity against IBV.

Mehlich 3 extractant used for the evaluation of wheat-available phosphorus and zinc in calcareous soilsOriginal Paper

Ondřej SEDLÁŘ, Jiří BALÍK, Martin KULHÁNEK, Jindřich ČERNÝ, Milan KOS

Plant Soil Environ., 2018, 64(2):53-57 | DOI: 10.17221/691/2017-PSE

Relation between wheat (Triticum aestivum) nutritional status determined at the beginning of stem elongation and during anthesis, respectively, and available content of phosphorus (P-M3) and zinc (Zn-M3) determined by the Mehlich 3 extractant was studied. Both one-year pot experiment with spring wheat and two-year on-farm trials with winter wheat were run on various calcareous soils (pH values of 7.18-7.94, median 7.80, P-M3 1-289 ppm, median 54, and Zn-M3 2-14 ppm, median 4), in the Czech Republic (Central Europe). Phosphorus nutrition index (ratio of phosphorus concentration in shoot biomass to critical phosphorus concentration - Pc) was calculated using the Belanger et al.'s model: Pc = -0.677 + 0.221N - 0.00292N(2), where both phosphorus and nitrogen concentrations were expressed in g/kg shoot dry matter. Unlike phosphorus concentration in shoot biomass, phosphorus nutrition index significantly correlated with P-M3 content in soil. Optimal values of the phosphorus nutrition index were recorded if P-M3 was 51-68 ppm. Zinc concentration in shoot biomass more strongly correlated with P:Zn ratio (M3) in soil compared to Zn-M3 content in soil. P:Zn ratio in shoot biomass of 130:1 did not lead to phosphorus deficiency and corresponded to P:Zn (M3) ratio in soil of 9.3:1-14.3:1.

Use of biologically active substances in hopsShort Communication

Pavel PROCHÁZKA, Přemysl ŠTRANC, Kateřina PAZDERŮ, Jan VOSTŘEL, Jan ŘEHOŘ

Plant Soil Environ., 2018, 64(12):626-632 | DOI: 10.17221/655/2018-PSE

In four-year experiments, hop was treated with 7 biologically active substances in two terms during vegetation: Lignohumate max (a mixture of humic acids and fulvic acids), Lexin (a mixture of humic acids and fulvic acids enriched with auxins), Lexenzym (a mixture of humic acids and fulvic acids enriched with auxins, phytohormones and enzymes precursors), Ascophyllum nodosum seaweed extract, synthetic auxin, humic acids and fulvic acids alone. The chlorophyll content was monitored after the application both in the vine leaves and in the branch leaves. After harvesting of the hops from the individual treatments, the yield of dry hops was determined and the cones were analysed for the content of alpha bitter acids. The results show that the most effective hop treatment was the application of Lexin and Lexenzym. The Lexenzym treatment provided a yield of dry hops of 1.86 t/ha, i.e. 0.47 t/ha higher compared with untreated control. The Lexin treatment provided yield higher by 0.41 t/ha of dry hops compared with the untreated control, while the harvested cones contained the most alpha-bitter acids (4.57%).

Response to selection of a breeding program for Suffolk sheep in the Czech RepublicOriginal Paper

Martin Ptáček, Jaromír Ducháček, Jitka Schmidová, Luděk Stádník

Czech J. Anim. Sci., 2018, 63(8):305-312 | DOI: 10.17221/21/2018-CJAS

Lamb growth performance traits in relation to parental breeding values (BVs) for these traits were evaluated in a purebred Suffolk sheep population in the Czech Republic. The research lasted over 8 years and included 24 886 lambs. Four relevant parental BVs were observed: BV predicted for lamb live weight direct effect (BVLW-DE), BV predicted for lamb live weight maternal effect (BVLW-ME), BV predicted for lamb musculus longissimus lumborum et thoracis depth (BV-MLLT), and BV predicted for lamb backfat thickness (BV-BT). The lamb live weight (LW; kg), musculus longissimus lumborum et thoracis depth (MLLT; mm), and backfat thickness (BT; mm) were assessed at 100 days of age. A dataset was created using the most current parental BVs for each year (2007-2014) and subsequent growth traits of their lambs in the next season (2008-2015). Linear regressions showed an increased tendency when one point in dam BVs was associated with an increase in lamb LW (0.393 kg; P < 0.01 in BVLW-DE and 0.090 kg; P < 0.05 in BVLW-ME), MLLT (0.340 mm; P < 0.01 in BV-MLLT), or BT (0.243; P < 0.01 mm in BV-BT). Lower (but significant - P < 0.01) values on linear regression were detected for sire BVs, when 0.135 kg of LW, 0.217 mm of MLLT, and 0.214 mm of BT corresponded to 1-point increases of BVLW-DE, BV-MLLT, or BV-BT. This was confirmed by ANOVA evaluation, especially for LW and MLLT traits. Maximal differences (P < 0.05) in lamb LW were 1.84 kg or 0.88 kg regarding to dam or sire BVLW-DE groups. Similarly, the difference (P < 0.05) in lamb MLLT reached 0.82 mm in dam BV-MLLT, while 0.57 mm was detected in sire BV-MLLT groups. These results have practical implications for the objectives of selection schemes used in the Suffolk sheep population in the Czech Republic.

Productivity and tree performance of new plum cultivars from the Czech RepublicOriginal Paper

Jan Blažek, Lubor Zelený, Jana Křelinová

Hort. Sci. (Prague), 2018, 45(2):64-68 | DOI: 10.17221/97/2017-HORTSCI

This 12-year study was conducted to evaluate the performance of new plum cultivars from the Czech Republic. A new cultivar, 'Stáňa', was the most productive, followed by 'Kamir' and the standard cultivar 'Stanley'. The new plum cultivar 'Stáňa' also had the highest mean yield per cubic meter of tree canopy. Next in order of production efficiency were 'Stanley', 'Amátka', 'Kamir' and 'Čačanska lepotica'. According to canopy volume, the most vigorous cultivar was 'Kamir' followed by 'Samera' and 'Stáňa'. The least vigorous was 'Dwarf', having a canopy volume distinctly smaller than 'Amátka', which was next in the order. The shape of tree canopies ranged from 'Dwarf', which had the most upright canopy, to 'Simona' with a more distinctly overhanging canopy at the opposite extreme. The highest percentages of fruiting on first and second year wood were observed on trees of 'Simona' and 'Čačanska lepotica'.

Digitization and mapping of national legacy soil data of MontenegroOriginal Paper

Edin SALKOVIĆ, Igor DJUROVIĆ, Mirko KNEŽEVIĆ, Vesna POPOVIĆ-BUGARIN, Ana TOPALOVIĆ

Soil & Water Res., 2018, 13(2):83-89 | DOI: 10.17221/81/2017-SWR

This paper describes the process of digitizing Montenegro's legacy soil data, and an initial attempt to use it for digital soil mapping (DSM) purposes. The handwritten legacy numerical records of physical and chemical properties for more than 10 000 soil profiles and semi-profiles covering whole Montenegro have been digitized, and, out of those, more than 3000 have been georeferenced. Problems and challenges of digitization addressed in the paper are: processing of non-uniform handwritten numerical records, parsing a complex textual representation of those records, georeferencing the records using digitized (scanned) legacy soil maps, creating a single computer database containing all digitized records, transforming, cleaning and validating the data. For an initial assessment of the suitability of these data for mapping purposes, inverse distance weighting (IDW), ordinary kriging (OK), multiple linear regression (LR), and regression-kriging (RK) interpolation models were applied to create thematic maps of soil phosphorus. The area chosen for mapping is a 400 km2 area near the city of Cetinje, containing 125 data points. LR and RK models were developed using publicly available digital elevation model (DEM) data and satellite global land survey (GLS) data as predictor variables. The digitized phosphorus quantities were normalized and scaled. The predictor variables were scaled, and principal component analysis was performed. For the best performing RK model an R2 value of 0.23 was obtained.

Reduced microbiological contamination following irrigation of germinated seed for foodsFood Technology and Economy, Engineering and Physical Properties

Honorata DANILČENKO, Elvyra JARIENÉ, Dalé TELEVIČIUTÉ, Skaidré SUPRONIENÉ, Jurgita KULAITIENÉ, Živilé TARASEVIČIENÉ, Alvyra ŠLEPETIENÉ, Judita ČERNIAUSKIENÉ

Czech J. Food Sci., 2018, 36(2):139-145 | DOI: 10.17221/267/2017-CJFS

Germinated seeds are rich in various nutrients but are vulnerable to fungal contamination which favours micromycete formation on the sprouts. The main aim of this work was an investigation of strategies to reduce the contamination of sprouted seed foods. Over the course of 96 hours of sprouting, seeds of organic spring wheat (Triticum aestivum L.), winter wheat (Triticum aestivum L.), naked oat (Avena nuda L.), triticale (xTriticosecale) and rye (Secale cereale L.) were irrigated in water filtered using the Pazdroid Med-1500 filtration device with and without 4% ethyl alcohol. Germinated seeds were stored at 18°C for one, three and seven days and the levels of Mucor spp., Penicillium spp., Alternaria spp., Aspergillus spp., Fusarium spp. and Bipolaris spp were determined. Micromycete numbers were greater in sprouted winter wheat and rye but were reduced when these were soaked and irrigated with filtered water and filtered water containing 4% ethyl alcohol. Filtered water led to greater reductions in micromycete numbers in sprouted winter and spring wheat than in other seeds.

The effect of freezing storage on physical and chemical properties of wild boar meatFood Technology and Economy, Engineering and Physical Properties

Marian GIL, Paulina DUMA-KOCAN, Renata STANISŁAWCZYK, Mariusz RUDY

Czech J. Food Sci., 2018, 36(6):487-493 | DOI: 10.17221/62/2018-CJFS

The colour, chemical composition, texture parameters, hydration properties and fatty acids profile of fresh wild boar meat and meat after 2 months of freezing were compared. The research material was the M. longissimus dorsi muscle cut out of wild boar carcasses (Sus crofa). Analyses of physical and chemical properties of samples taken from 16 boars were performed. Samples were packed and frozen to -18°C and stored under such conditions for a period of two months. Freezing storage significantly increased the elasticity value and the colour of the meat as indicated by the decrease in L* and b* values. In frozen meat there slightly increased thermal drip and forced drip. The changes in the fatty acid profile under the effect of freezing were found more often in fat from muscle M. longissimus dorsi than in back fat of wild boar. In conclusion, it should be noted that freezing storage in a short time does not affect negatively the quality of frozen meat.

Factors influencing reproductive efficiency and pregnancy in Pura Raza Española maresOriginal Paper

A. Akourki, A. Echegaray, M.V. Falceto, O. Mitjana

Vet Med - Czech, 2017, 62(4):186-191 | DOI: 10.17221/205/2015-VETMED

The aim of this study was to analyse ovarian activity and pregnancy in 140 Pura Raza Espanola mares over a period of two consecutive years. The data were analysed using SPSS software to evaluate the effects of age, category of mares and season on pre-ovulatory follicle size, ovulation rate, interval from foaling to pregnancy, gestation length, incidence of twin pregnancies and pregnancy losses. The results showed that follicular diameter was significantly (P < 0.05) smaller in fillies (3-year-old) and maiden mares than in older and multiparous mares. Within the group of animals treated with gonadotropin hormone hCG, 87.23% ovulated 48 h following administration. Length of gestation varied from 305 to 356 days and all gestation pregnancies of less than 305 days resulted in a non-viable foal. In addition, foaling season affected (P < 0.05) the post-partum conception interval and the length of gestation, which were shorter and longer in the winter foaling, respectively. Regarding the other parameters, mares of this stud exhibited relatively very low rates of double ovulations, twin pregnancies and pregnancy losses. We conclude that age and category of mares and foaling season influence fertility and foaling rates by affecting pre-ovulatory follicle size, pregnancy loss and gestation length.

Diagnosis of cerebral ventriculomegaly in felines using 0.25 Tesla and 3 Tesla magnetic resonance imagingOriginal Paper

P. Przyborowska, Z. Adamiak, P. Holak, Y. Zhalniarovich, W.S. Maksymowicz

Vet Med - Czech, 2018, 63(1):28-35 | DOI: 10.17221/59/2017-VETMED

Twenty European shorthair cats with neurological disorders, aged 1-3 years and with body weights of 2.6-4.05 kg, were studied in low-field and high-field magnetic resonance imaging systems. Aims of the study were to evaluate the dilation of lateral ventricles in the examined population of cats with the use of quantitative analysis methods and to identify any differences in the results of low- and high-field magnetic resonance imaging. The average brain height was determined to 27.3 mm, and the average volume of the brain was 10 699.7 mm3. Moderately enlarged ventricles were observed in 16 symptomatic cats. Moderate unilateral enlargement was observed in one cat. Mild ventricular asymmetry was described in four animals. The average difference in ventricular height between measurements obtained in low- and high-field magnetic resonance imaging was 0.37 ± 0.16% and for ventricular volume it was 0.62 ± 0.29%. The magnetic resonance imaging scan did not reveal statistically significant differences in brain height or volume between healthy and cats with ventriculomegaly. The differences in the results of low- and high-field magnetic resonance imaging were not statistically significant. Described findings could facilitate the interpretation of magnetic resonance images in cats with ventriculomegaly or hydrocephalus.

Differences between the Italian and Slovak legal systems with respect to animal protectionOriginal Paper

R. Balajty, D. Takacova, G. Ruffo, P. Fossati

Vet Med - Czech, 2018, 63(6):292-297 | DOI: 10.17221/4/2018-VETMED

This paper provides a comparative analysis of the legal content of animal protection legislation in the Slovak Republic with that of Italian legislation. Firstly, we compare the legal systems in the Slovak Republic and Italy with respect to the animal protection laws, especially criminal law in both countries. This comparison of the two different legislations allows detection of identical or different characteristics in the area of animal protection, which could be used later as an inspiration for lawmakers in both countries.

Overgrazing depresses soil carbon stock through changing plant diversity in temperate grassland of the Loess PlateauOriginal Paper

Guangyu ZHU, Zhuangsheng TANG, Lei CHEN, Zhouping SHANGGUAN, Lei DENG

Plant Soil Environ., 2018, 64(1):1-6 | DOI: 10.17221/610/2017-PSE

This study mainly estimates the effect of grazing on plant diversity and soil storages on the northern Loess Plateau of China. Four grazing intensities of ungrazed (UG), light (LG), moderate (MG), and heavy (HG) grassland were selected according to the vegetation utilization across the study area, in which plant diversity, heights, above- and belowground biomass, and soil carbon (C) stock were investigated. The results showed that overgrazing negatively affected plant growth and soil C stock. Plant cover, height, litter, above- and belowground productivity, as well as soil C stock significantly decreased with the increasing grazing intensity. Meanwhile, the UG and LG had higher grasses biomass together with lower forbs (P < 0.01) compared with MG and HG. The abundance of dominating grasses species, such as Stipa bungeana and S. grandis were decreased through long-term grazing as grasses species are palatable for herbivores, and the dominating forbs species, such as Artemisia capillaries and Thymus mongolicus were significantly increased with increasing grazing intensities. The results indicated that grazing exclusion or light grazing had positive effects on the sustainable development of grassland ecosystems. Therefore, a balanced use and a long-term efficient management of grasslands were better measures to counteract their local degradations.

Fertiliser from sewage sludge ash instead of conventional phosphorus fertilisers?Original Paper

Magdalena JASTRZĘBSKA, Marta KOSTRZEWSKA, Kinga TREDER, Przemysław MAKOWSKI, Agnieszka SAEID, Wiesław JASTRZĘBSKI, Adam OKORSKI

Plant Soil Environ., 2018, 64(10):504-511 | DOI: 10.17221/347/2018-PSE

Recycling of phosphorus (P) from municipal waste for the use as a fertiliser can be an alternative to the non-renewable resources of this element as well as a method in the management of civilisation by-products that are a burden to the environment. An innovative phosphorus suspension fertiliser, produced on the basis of ash from incineration of sewage sludge and phosphorus solubilising bacteria Bacillus megaterium was compared in field trials with spring wheat conducted in 2014 and 2015 with superphosphate and phosphorite. The new fertiliser was not inferior to the commercial fertilisers in terms of the effect on wheat yield volumes, the uptake of P by wheat and the sanitary condition of the wheat field, especially when grown protected from weeds, pathogens and pests. It is expected that such a fertiliser can be an alternative to fertilisers produced from non-renewable resources, provided it does not deteriorate the quality of agricultural production and will be safe for the environment.

Rumen undegradable protein (RUP) and its intestinal digestibility after steam flaking of cereal grainsOriginal Paper

Maria Chrenkova, Zuzana Formelova, Zuzana Ceresnakova, Catalin Dragomir, Matus Rajsky, Ana Cismileanu, Martin Riis Weisbjerg

Czech J. Anim. Sci., 2018, 63(4):160-166 | DOI: 10.17221/74/2017-CJAS

While it is known that heat treatment of cereal grains generally improves the nutritional value for ruminants, simultaneous information on rumen degradability and intestinal digestibility of the rumen by-pass is scarce, especially for non-starch constituents. The effect of steam flaking at 90°C for 30 min on protein quality of maize, wheat, and barley was studied. In addition to proximal chemical analyses, protein rumen degradability was determined in vitro and intestinal digestibility of rumen undegraded protein was determined using the mobile bag method. No significant effects of steam flaking on chemical composition of cereal grains (crude protein, acid detergent fibre, neutral detergent fibre, and starch) were observed. The protein fractions that are relevant to rumen degradability were significantly influenced by the steam flaking: the non-protein nitrogen fraction (A) was reduced (P < 0.05) by 43-93% for all three cereal grains, whereas the fraction that represents true soluble protein (B1) was reduced (P < 0.05) for wheat grains (by 77%) and barley (by 93%). Although the difference was not significant, a decrease of 41% for B1 fraction was also observed for maize. On the other hand, steam flaking markedly increased buffer insoluble but neutral detergent soluble protein fraction (B2) by 15-25% for all three cereal grains, whereas effects on B3 fraction were not significant. Steam flaking was also associated with an increase of the rumen undegradable protein fraction (C) in the case of barley, from 6.6 to 11.1% of total N (P < 0.05) and wheat, from 5.2 to 8.4% of the total N (P < 0.05). Overall, the changes of the protein fractions led to a considerable increase of the rumen undegradable protein (RUP) for all steam-flaked cereal grains (P < 0.05). Steam flaking also increased (P < 0.05) intestinal digestibility of RUP of the cereal grains (by 3.6-34.8%), leading to a more efficient protein use in ruminants.

Drivers of grain price volatility: a cursory critical reviewOriginal Paper

Fabio Gaetano Santeramo, Emilia Lamonaca, Francesco Contò, Gianluca Nardone, Antonio Stasi

Agric. Econ. - Czech, 2018, 64(8):347-356 | DOI: 10.17221/55/2017-AGRICECON

Understanding the determinants of price volatility is a key step to prevent the potential negative consequences of the uncertainty faced by farmers. The presented critical review provides a novel categorization of grain price volatility drivers. The authors distinguish the endogenous and exogenous causes and conclude on the potential effects that each of the identified factors may generate on the price dynamics. In particular, there is deepened the contribution of endogenous factors, such as the spatial and temporal arbitrage, as well as the drivers of shocks of demand and supply.

Adrenal gland tumours. Different clinical presentations in three dogs: a case reportCase Report

A. Loste, M. Borobia, M. Borobia, D. Lacasta, M. Carbonell, A. Basurco, M.C. Marca

Vet Med - Czech, 2013, 58(7):377-384 | DOI: 10.17221/6919-VETMED

Three dogs were evaluated due to the presence of unilateral adrenal gland masses with or without clinical signs. Case 1 showed a unilateral non-functional adrenocortical adenoma, discovered accidentally while Case 2 presented a unilateral cortisol-secreting adrenocortical adenoma; a pheochromocytoma was accidentally discovered in Case 3. The adrenalectomy was the treatment of choice in all cases. The development of diagnostic imaging techniques, mainly ultrasonography, and its application to routine abdominal examinations, have allowed the detection of adrenal gland masses more frequently. However, there is no pattern of echogenicity or architecture which would help in the differentiation in a functional tumour from a non-functional tumour, a pheochromocytoma, a metastatic lesion to the adrenal or a granuloma. A complete description of history, clinical signs, laboratory analysis and imaging studies is included. Moreover, a revision of the different types of adrenal gland tumours, with their clinical presentation, a standardised diagnosis protocol and options for treatment are discussed.

Development of a triplex real-time PCR for simultaneous detection of allergenic ingredients in processed foodFood Chemistry and Safety

Wenju ZHANG, Yulei ZHAO, Qingjin XU, Qin CHEN

Czech J. Food Sci., 2018, 36(1):22-27 | DOI: 10.17221/28/2017-CJFS

SYBR Green real-time or quantitative PCR (Q-PCR) is a suitable system in which to establish a multiplex method to detect allergenic ingredients in food. In this study, a triplex Q-PCR method was developed to detect trace amounts of peanut, soybean and sesame in processed food. Specific PCR primer sets were designed and the concentration of the primers used in the triplex PCR was optimised. The triplex method showed high specificity and sensitivity which were similar to those of the simplex method, and it was applied for the detection of allergenic ingredients in commercially available processed food. The results demonstrate that the developed triplex Q-PCR is a quick, reliable and efficient method for the detection of allergenic ingredients in processed food.

 previous    ...   101   102   103   104   105  106   107   108   109   110   ...    next