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Accumulation of copper and zinc in soil and plant within ten-year application of different pig manure ratesOriginal PaperY. Xu, W. Yu, Q. Ma, H. ZhouPlant Soil Environ., 2013, 59(11):492-499 | DOI: 10.17221/121/2013-PSE Fertilization of crops with pig manure is a common practice throughout the world. Nevertheless, due to the relatively high copper (Cu) and zinc (Zn) contents in pig manure, continuous application of pig manure could have negative effects on soil and plant. The study aimed at the impacts of long-term applying different pig manure rates (equivalently 0, 100, 250 and 500 kg total N/ha/year from 2002 to 2008 and 0, 10, 25 and 50 t fresh weight/ha/year from 2009 to 2011, respectively) on Cu and Zn accumulation in soil and plant. During the 10 years of the experiment, a total of 2.04 to 10.20 kg/ha/year for Cu, 3.15 to 15.73 kg/ha/year for Zn were applied to the soil. Results from this study showed that long-term pig manure application resulted in serious accumulation of Cu and Zn in soil, total Cu and Zn concentrations increased by 204% and 107% at high application rates, respectively. Although topsoil Cu and Zn concentrations were below concentrations considered phytotoxic to crops, according to current Chinese legislation, it would take only less time than 16 and 27 years of high application rates to reach the allowable limits. Our result also suggested that Cu and Zn leaching occurred in the tested soil. The Cu and Zn concentrations in stalks and grains were not affected by the application of pig manure, and these values were lower than the threshold values for animal and human ingestion. |
Curcumin offers antioxidant protection to cryopreserved bovine semenOriginal PaperEva Tvrdá, Hana Greifová, Alica Mackovich, Faridullah Hashim, Norbert LukáčCzech J. Anim. Sci., 2018, 63(7):247-255 | DOI: 10.17221/33/2017-CJAS Evidence shows that oxidative stress associated with sperm cryopreservation may lead to a significant decrease of the structural integrity and functional activity of male gametes. Curcumin (CUR) has become a substance of scientific interest for its free radical-quenching abilities, which could enhance the post-thaw quality of male gametes. This study assessed the effects of CUR on the post-thaw vitality and selected oxidative stress markers of bovine spermatozoa. Thirty ejaculates collected from 10 breeding bulls were divided into two aliquots and cryopreserved in the absence (control) or presence of CUR (50 μmol/l). Immediately before use, the control or experimental straws were thawed at 37°C for 20 s. CUR administration led to a significantly higher preservation of spermatozoa motion (P < 0.001) as well as membrane (P < 0.05) and acrosomal (P < 0.01) integrity in comparison with the control. Moreover, spermatozoa exposed to CUR exhibited a significantly higher mitochondrial activity (P < 0.001). Significantly decreased amounts of reactive oxygen species (P < 0.01) and superoxide (P < 0.001) were detected following CUR supplementation. Finally, a significant decrease of oxidative damage to proteins (P < 0.01), lipids (P < 0.001), and DNA (P < 0.05) was recorded in samples to which CUR was administered in comparison to the control. In this study, CUR proved to act as an efficient antioxidant molecule offering protection to male gametes against oxidative damage during cryopreservation. |
Characteristics of 3rd (Querci-fageta s. lat.) and 4th (Fageta (abietis) s. lat.) vegetation tiers of north-eastern Moravia and Silesia (Czech Republic)O. Holuša, J. Holuša, Sr.J. For. Sci., 2008, 54(10):439-451 | DOI: 10.17221/50/2008-JFS Detailed characteristics (tree species composition, tree representation, identification features) are presented by 3rd (i.e. geobiocenoses of Querci-fageta s. lat.) and 4th (Fageta (abietis) s. lat.) vegetation tiers in north-eastern Moravia and Silesia. 3rd VT occupies 45.6% of the study area - from 190 m a.s.l. up to 430 m a.s.l. Fagus sylvatica is a dominant tree (with the height of 35-40 m). Quercus robur and Quercus petraea have their ecological optimums there with the representation of up to 30%. Abies alba occurs in the crown level with the representation of up to 10%. 4th occupies 35.2% of the study area - from 310 m a.s.l. up to 650 m a.s.l. Fagus sylvatica is dominant (the height over 50 m). Abies alba occurs in the co-dominant level (sporadically in the level exceeding the main level) with the representation of ±20% and the height of up to 50 m. Quercus petraea and Quercus robur occur only as an interspersed species with the representation of up to 10%, they do not reach the co-dominant tree level any more. Carpinus betulus is represented regularly only in the overtopped tree level. |
Single fixed-time laparoscopic intrauterine insemination as a tool to obtain low-diversity porcine embryosOriginal PaperK.-P. Brüssow, A. Vernunft, B. Kempisty, J. RatkyVet Med - Czech, 2013, 58(8):412-416 | DOI: 10.17221/6980-VETMED Double fixed-time insemination after ovulation induction is commonly used in pigs to obtain in vivo produced embryos at defined stages of development for downstream biotechnological applications. However, variations in the time of ovulation and fertilisation of the ovulated oocytes by spermatozoa, mainly in one of the inseminations, can cause diversities in embryo development. The aim of the present study was to reduce embryo diversity and to achieve a 'uniform outcome' of porcine embryo stages using single laparoscopic fixed-time insemination (LIUI). Altogether, 48 puberal German Landrace gilts were included in the study. Estrus of gilts was synchronized by 15-day long altrenogest (Regumate®) feeding and follicle development was stimulated with 850 IU eCG 24 h after the final altrenogest application. Ovulation was induced with 500 IU hCG 80 h after eCG. LIUI was performed 31 h after hCG treatment. Gilts under general anaesthesia were fixed in a dorsal position, a pneumoperitoneum was produced and three trocar cannulas were inserted into the abdomen for optics and instruments. Each uterine horn was carefully punctured 10-15 cm caudal from the utero-tubal junction with a 2.5 mm trocar. A 2.2 mm catheter was inserted about 3 cm into the uterine lumen and 20 ml of extended fresh boar semen (32.2 × 106 sperm cells/ml) were injected. Embryos were surgically flushed from the genital tract two (Day 2) and three (Day 3) days after insemination. Altogether, 778 oocytes/embryos were recovered (recovery rate 68 ± 17%); 45 of 48 gilts (93.8%) revealed fertilisation and 76.1% of the recovered embryos (n = 592) were at the 2- and 4-cell stage. On Day 2 (n = 22 gilts), a higher percentage of gilts (72.7%, P < 0.05) displayed only 2-cell embryos compared with gilts which had 2- and 4-cell (22.7%), or only 4-cell embryos (4.6%). On Day 3 (n = 23 gilts), the proportion of gilts with 2-cell, 2- and 4-cell, and only 4-cell embryos shifted to 4.3%, 0% and 95.7%, respectively (P < 0.05). The results of the present study demonstrate high rates of fertilisation and homogenously developed embryos after single fixed-time laparoscopic intrauterine insemination in gilts. Additionally, these results were achieved by inseminating a 60% lower number of sperm cells per insemination dose compared to usual doses used for transcervical insemination. In conclusion, LIUI can be recommended for the in vivo production of embryos in a homogeneous developmental stage, and also as an alternative method for low-dose insemination. |
Optimisation of oil extraction from quinoa seeds with supercritical carbon dioxide with co-solventsFood Technology and Economy, Engineering and Physical PropertiesGrażyna WEJNEROWSKA, Anna CIACIUCHCzech J. Food Sci., 2018, 36(1):81-87 | DOI: 10.17221/122/2017-CJFS In the present work supercritical fluid extraction with carbon dioxide was performed to obtain oil from quinoa seeds. The effects of extraction variables - namely pressure, temperature, time, particle size, and co-solvent, on supercritical carbon dioxide extraction are investigated. Total extraction yields and compositions using pure CO2 and CO2 + selected co-solvents are compared. The maximum recovery for quinoa oil is found to be about 89%, and is obtained when extractions are carried out at 25 MPa, 40°C for 80 minutes. A significant effect on the oil recovery is exerted by size reduction of seeds to a particle size ≤ 0.50 mm and addition of co-solvent to seed in an amount of 20% - methanol/ethanol (1 : 1, w/w). Irrespective of the extraction method and conditions, the fatty acid composition is not substantially changed. |
Rheological properties of dough and baking quality of products using coloured wheatOriginal PaperLuděk HŘIVNA, Veronika ZIGMUNDOVÁ, Iva BUREŠOVÁ, Roman MACO, Tomáš VYHNÁNEK, Václav TROJANPlant Soil Environ., 2018, 64(5):203-208 | DOI: 10.17221/62/2018-PSE The experiment included testing of rheological properties of dough as well as the baking quality of bread flour and bran obtained by grinding coloured wheat grains with purple pericarp (cultivars Rosso, Konini and PS Karkulka) and blue aleurone (cv. Scorpion). Common wheat cv. Mulan was used for comparison. Formulas containing 10, 15 and 20% of bran were prepared. The addition of bran increased the water loss during baking by an average of 1.28%, specific volume of bread decreased by 2 to 10 mL, and the ratio number decreased from 0.57 to 0.51. The dynamic oscillatory rheometry simulated processes occurring during baking. A higher content of bran increased the complex viscosity of dough. In the initial stages of heating, the increasing presence of bran promoted dough weakening. Starch gelatinization was also influenced by the content of bran. |
Influence of soil conservation practices on legume crops growthOriginal PaperJan KOUKOLÍČEK, Marcel HEROUT, Josef PULKRÁBEK, Kateřina PAZDERŮPlant Soil Environ., 2018, 64(12):587-591 | DOI: 10.17221/549/2018-PSE In a three-year experiment, three types of soil conservation techniques were tested in the legumes cultivation systems. Our treatment types were no-till, standard tillage to the depth of 8 cm and deep tillage to 20 cm. The study evaluated winter pea (cv. Enduro), spring pea (cv. Eso), white lupine (cv. Amiga), narrow-leaved lupine (cv. Boregine) and soybean (cv. Merlin) in two autumn terms (winter pea only) and in spring term (all legume species). In no-till technology, the average yield of all legumes was 2.24 t/ha. For standard tillage (2.58 t/ha) and deep tillage (2.62 t/ha), yields were significantly higher than in no-till technology. From the monitored parameters, deep tillage appeared as the best soil treatment. Although the yield was similar to standard tillage, the soil was less stiffened, resulting in a higher content of nitrogen in the seed and a better use of the pre-crop value of the legumes. In the experiment, winter pea spring sowing term (2.93 t/ha) was better than both autumn sowings (2.68 t/ha and 2.65 t/ha). |
Assessment of gross calorific value of crop and bio-energy residuesOriginal PaperJános Jóvér, Károly Antal, József Zsembeli, Lajos Blaskó, János TamásRes. Agr. Eng., 2018, 64(3):121-127 | DOI: 10.17221/13/2017-RAE This study assessed the gross calorific values (GCV) of crop and bio-energy residues. In addition, it assessed the calorific values of sweet sorghum to clarify its potential as energy crop in the region. Furthermore, it statistically analysed the ash remaining after burning three bio-energy residues, bagasse, oil cakes and fermented sludge of biogas production, to identify their potential for agricultural use. Finally, the study calculated alkali content based on nutrient content and GCVs. Significant differences were found among the GCVs of the investigated materials. Among the crop residues, the least significant difference (LSD) (P ≤ 0.05) of the calorimetric values was 76.26 kJ/kg, and among the by-products of bio-energy production, it was 20.80 kJ/kg. Significant differences were also found in nutrient content. In the case of the alkali content of bio-energy residues, the LSD was 0.04 kJ.kg-1. For the bagasse and compost, the study recommends some technical operations to avoid slagging. |
Fractionation, antioxidant and inhibitory activity of Thai mango seed kernel extractsFood Chemistry and SafetyChaianun NAMNGAM, Supakorn BOONYUEN, Praphan PINSIRODOMCzech J. Food Sci., 2018, 36(1):8-15 | DOI: 10.17221/225/2017-CJFS Mango seed kernel extracts (MSKE) from Kaew and Choke-Anan mango cultivars were fractionated using Sephadex LH-20 column chromatography. Antioxidant activity and the inhibitory effects on tyrosinase, 5-lipoxygenase, hyaluronidase and α-glucosidase of MSKE fractions were evaluated. The key components of polyphenol, found in the most active fraction, were identified using LC-ESI-MS. Three major isolates were obtained from both cultivars of the MSKE with the absorbance being higher for Choke-Anan than Kaew. Fraction 3 of MSKE from both cultivars showed significantly (P ≤ 0.05) higher antioxidant activity and 5-lipoxygenase, hyaluronidase and α-glucosidase inhibitory activity with Choke-Anan more effective than Kaew. Six different polyphenols were found in fraction 3 of both cultivars. These were tri-o-galloyl-glucoside, tetra-o-galloyl-glucoside, maclurin tri-o-galloyl-glucoside, penta-o-galloyl-glucoside, hexa-o-galloyl-glucoside, and hepta-o-galloyl-glucoside. In the MSKE from Choke-Anan, hexa-o-galloyl-glucoside, and tetra-o-galloyl-glucoside were the two major components, whereas in the MSKE from Kaew tetra-o-galloyl-glucoside was the only major component. The results indicate that MSKE is a suitable by-product that could be utilised for adding value to the mango processing industry and could represent a valuable input into functional foods and pharmaceutical production. |
Comparison of intraocular pressure, tear production and cardiorespiratory variables before and after induction of anaesthesia with either propofol or ketofol in dogs premedicated with midazolamOriginal PaperH. Imani Rastabi, A. Baniadam, A. Ronagh, A. Khajeh, M. KamyabniaVet Med - Czech, 2018, 63(6):271-278 | DOI: 10.17221/18/2017-VETMED The objective of the present study was to compare the effects of propofol and ketofol on intraocular pressure, tear production and cardiorespiratory variables in dogs premedicated with midazolam. Six castrated adult mixed-breed dogs were used in a cross-over design with a one-week interval. Twenty minutes after premedication with midazolam (0.2 mg/kg), animals were assigned randomly to two groups and received either propofol (6 mg/kg) or ketofol (3 mg/kg; 1 : 1 mg/ml ratio) treatments intravenously. Intraocular pressure, tear production, heart rate, respiratory rate, rectal temperature and direct mean arterial blood pressure were measured at base (before induction), and at 5, 10, 15, 20 and 30 min after induction of anaesthesia. Blood gas samples were obtained at base (before induction), and at 5, 15 and 30 min after administration of treatments. Intraocular pressure showed significantly higher values at 5 min after induction in ketofol compared with propofol (16.1 ± 4.5 mm Hg vs 8.2 ± 1.2 mm Hg, respectively). There were no significant changes in tear production in either group. Significantly higher heart rate and mean arterial blood pressure were detected in ketofol at several time points. Respiratory depression occurred in both groups with no significant differences between them. In conclusion, although ketofol improved heart rate and mean arterial blood pressure and did not elicit more pronounced respiratory depression than propofol, it resulted in significantly higher values of intraocular pressure at 5 min after administration in dogs. Despite the small number of dogs in this study, our results indicate that ketofol should not be recommended for ophthalmic surgical procedures in dogs. Appropriate oxygenation should be provided when propofol is used for ophthalmic surgeries. |
Improving nutritional quality of wheat through soil and foliar zinc applicationOriginal PaperK. Bharti, N. Pandey, D. Shankhdhar, P.C. Srivastava, S.C. ShankhdharPlant Soil Environ., 2013, 59(8):348-352 | DOI: 10.17221/158/2013-PSE A field study was conducted to ascertain the effect of three zinc (Zn) levels: 0, 20 kg ZnSO4/ha and 20 kg ZnSO4/ha + foliar spray of 0.5% ZnSO4, on wheat grain Zn content and factors contributing to or hindering in its bioavailability. Increasing Zn levels were established as serviceable in improving the nutritional status of genotypes. Soil application + foliar spray proved to be paramount for all the traits leading to an 80% increase in grain Zn content, 61.3% in methionine content and a decrease of 23.2% in phytic acid as an average of all genotypes and both years. The genotype UP 2382 was found more suited to Zn fertilization in allocating Zn and maintaining a lower phytate to Zn molar ratio. |
Influence of mulching on gherkins at two levels of irrigationOriginal PaperVojtěch Ptáček, Martin Koudela, Josef Sus, Jitka DoležalováHort. Sci. (Prague), 2018, 45(3):139-144 | DOI: 10.17221/200/2016-HORTSCI The field experiments described here were conducted over a period of three years. The effect of mulching on emergence, phenophase, the weight of single fruits and yield of the 'Elisabet F1' and 'Harriet F1' cultivars of gherkins were evaluated, using wheat straw, black non-woven fabric and Ekocover paper mats as mulch compared to a non-mulched control variant. A positive effect of mulching on emergence was found using non-woven fabric at a reduced level of irrigation. The use of non-woven fabrics (21.01 t/ha) and wheat straw (22.92 t/ha) as mulch positively affected yield compared with the non-mulched variant (20.97 t/ha). Reduced levels of irrigation positively influenced the representation of market fruit compared to optimum levels of irrigation (about 1.5 to 3.1%), but these fruits were lighter (about 0.5 to 2.0 g). The influence of the cultivar on the evaluated properties of gherkins was insignificant. Higher yield (9%) and a higher percentage of market fruit (about 0.8 to 2.0%) was found for the 'Harriet F1' compared to 'Elisabet F1'. |
Structural and compositional responses to timber harvesting for an old-growth forest on Changbai Mountain, China - Short CommunicationH. Gu, L. DaiJ. For. Sci., 2008, 54(6):281-286 | DOI: 10.17221/20/2008-JFS Broadleaved-Korean pine (Pinus koraiensis) mixed forest is a dominant native vegetation type in the eastern Eurasian Continent. We intended to examine the implications of high-intensity timber harvesting (ca 70% of stand volume) for the sustainable management of a mixed forest ecosystem. We measured trees at three sites: control without cutting, older-cut site cut in 1987 and newer-cut site (cutting in 1997). There were significant differences in structure and composition between these three sites in 2003. There were 4,441 trees of 14 species with basal area 56 m2 at control plot, 6,314 trees of 16 species with basal area 9 m2 at newer-cut site and 8,438 trees of 21 species with basal area 31 m2 at older-cut site (all on the area of 1 ha). The high-intensity timber harvesting system helped promote natural regeneration and the growth of small trees but it also allowed light-demanding tree species to invade into the forest. Dominant position and suitable diameter distribution of economically important species (Pinus koraiensis and Tilia amurensis) were maintained across the three sites. The existing timber harvesting appears to consider short-term economic values to a larger extent than long-term ecological values. To manage the broadleaved-Korean pine mixed forest for both timber production and biodiversity conservation, timber-harvesting intensity must be lowered. |
Do stand structure and admixture of tree species affect Scots pine aboveground biomass production and stability on its natural site?Original PaperOndřej ŠPULÁK, Jiří SOUČEK, Jakub ČERNÝJ. For. Sci., 2018, 64(11):486-495 | DOI: 10.17221/117/2018-JFS The paper analyses stand structure and production on two experimental forest stand series of mature pure and mixed Scots pine stands, growing on natural Scots pine sites in the Czech Republic. Sessile oak was the main admixed species. In mixed stands, Scots pine constituted the dominant level of the stand, admixed species grew mostly as subdominants. Admixture increased stand densities and aboveground biomass production compared to pure stands. Sessile oak with the 20-30% number share within the Scots pine stand led to an increase of the Scots pine tree dimensions and mean stem merchantable wood (DBH ≥ 7 cm) volume compared to the pure Scots pine stand of similar density. The Scots pine and sessile oak slenderness ratios increased in mixed stands compared to monocultures, however, the stand mechanical stability was not threatened. |
Molecular identification of wheat leaf rust resistance genes in sixty Chinese wheat cultivarsOriginal PaperZhikuan REN, Zaifeng LI, Lingzhi SHI, Xiaodong WANG, Lin ZHU, Xing LI, Daqun LIUCzech J. Genet. Plant Breed., 2018, 54(1):1-8 | DOI: 10.17221/6/2016-CJGPB Common wheat (Triticum aestivum L.) is the major crop cultivated in Xinjiang and Anhui provinces of China. The climate in these two provinces is favourable for wheat leaf rust (Puccinia triticina) (Pt) infection. Here, we demonstrate a detailed investigation on the leaf rust resistance of 60 major wheat cultivars cultivated in these two regions. A mixture of high virulent Pt races (THTT, THTS, THTQ and PHPS) were used to phenotype all the collected wheat cultivars at an adult plant stage. Phenotypic disease severity (FDS) and the area under the disease progress curve (AUDPC) for each of these wheat cultivars were calculated. Among all the tested wheat cultivars, three cultivars (Xindong20, Xindong 29 and 99AR142-1) with the lowest FDS and AUDPC may carry major resistance genes. Twenty-seven cultivars (45% of the total tested ones) showed a relatively lower resistance with an average of 12.52% FDS and 126.3 AUDPC. Minor resistance or slow rusting genes may be present in this group of cultivars. Molecular markers for leaf rust resistance genes Lr1, Lr9, Lr19, Lr24, Lr26 and Lr34 were further used for the genotypic screening. Lr1, Lr19, Lr26 and Lr34 were detected in 19 (31.7%), 1 (1.7%), 12 (20%) and 6 (10%) wheat cultivars, respectively. Neither Lr9 nor Lr24 could be detected in any of the tested cultivars. These results will greatly improve wheat molecular breeding for leaf rust resistance in these areas. |
Estimation of genetic parameters of fatty acids composition in flesh of market size common carp (Cyprinus carpio L.) and their relation to performance traits revealed that selective breeding can indirectly affect flesh qualityOriginal PaperMartin Prchal, Marc Vandeputte, David Gela, Marek Doležal, Hana Buchtová, Marek Rodina, Martin Flajšhans, Martin KocourCzech J. Anim. Sci., 2018, 63(7):280-291 | DOI: 10.17221/30/2018-CJAS Fish are a rich source of omega-3 polyunsaturated fatty acids (n-3 PUFAs) and thus, they should be an integral part of human diet at least twice a week. As a result, high attention has been devoted to the improvement of fatty acids (FA) content in the flesh of farmed fish through nutrition. Conversely, there are very few data on the potential of selective breeding to improve FA composition in fish. We estimated genetic parameters of fillet fatty acid content and performance traits in market size common carp cultured under semi-intensive pond conditions. The experimental stock arose through factorial mating of 7 dams and 36 sires. All families were reared communally. Pedigree was reconstructed with microsatellite markers, and 158 individuals were dressed out and selected for flesh FA composition analysis. Heritability estimates of total muscle fat, FA composition in total fat (TF) (n-3 PUFA-TF, PUFA-TF, EPA-TF - eicosapentaenoic acid, n-6/n-3 - omega6/omega3 PUFA ratio), and most performance traits were moderately heritable (h2 = 0.23-0.41), and body weight was highly heritable (h2 = 0.62 ± 0.20). Genetic correlations show that selection for faster growth would indirectly lead to fillet yield improvement (rg = 0.50-0.62) while having little impact on muscle fat (rg = 0.21). However, lipid quality in flesh would be affected: n-3 PUFA-TF would decrease and the n-6/n-3 PUFA ratio would increase. A likely interpretation is that faster growing genotypes consume more supplemental feed, which was poor in the beneficial FAs. For sustainable selective breeding, supplemental feed composition should be modified, so that faster growing carps would maintain an appropriate flesh quality. |
Yield and crown structure characteristics in a black locust (Robinia pseudoacacia L.) stand: A case study - Short CommunicationShort CommunicationKároly RÉDEI, Beatrix BAKTI, Tamás KISS, Marianna TAKÁCS, Zsolt KESERŰJ. For. Sci., 2018, 64(2):96-100 | DOI: 10.17221/118/2017-JFS The paper provides the results of a detailed analysis of timber volume and the most important crown variables of black locust (Robinia pseudoacacia Linnaeus) based on an experimental plot in southern Hungary. At the age of 20 years the crop trees belonged to different height classes. If the volume of the mean tree from height class I is considered as 100%, the volume of the mean tree of class II is 44.0%, and the mean tree of class III is only 30.3%. In case of timber volume per 1 m2 crown surface, the values are 72.9 and 61.7%. The DBH of trees showed a positive linear correlation with crown diameter (r = 0.942). Additionally, there were also positive linear relationships between crown diameter and volume (r = 0.901), between crown length and volume (r = 0.721) as well as tree height and crown length (r = 0.661). The variation of crown indices is height even within the same stand and indicates the importance of following a selective thinning operation method. |
Dietary effects of the inclusion of white lupine seeds and different types of binders on the blood indicators of young Dwarf Lop rabbitsOriginal PaperV. Simek, L. Kudelkova, E. Strakova, P. Suchy, D. ZapletalVet Med - Czech, 2018, 63(8):379-389 | DOI: 10.17221/12/2018-VETMED The aim of the present study was to evaluate the effects of the inclusion of whole seeds of white lupine and different binder types in complete pelleted diets on selected haematological and plasma biochemical indicators of growing dwarf rabbits. The individual litters of Dwarf Lop rabbit kits were randomised after birth into control (n = 12) and experimental (E) groups. The young rabbits of the E group (n = 24) received an experimental pre-weaning diet containing a 25% share of white lupine seeds. At the time of weaning, the live weights of eight-week-old rabbits in the control group and E group were 727 g and 743 g, respectively. The weaned rabbits of the E group were further equally divided into two post-weaning experimental dietary groups (M = 12; G = 12); these diets contained a 20% share of white lupine seeds each and their composition only differed in the type of the binder (molasses or glycerol component). The rabbits of the control group received a commercial pet rabbit diet with no white lupine seeds during the entire experimental period. At the age of eight weeks, the diet showed a significant effect on the level of albumin (P < 0.05), A/G ratio (P < 0.05) and ALP activity (P < 0.01) in plasma of dwarf rabbit kits. Significant effects of diet were found in 15-week old rabbits in relation to the plasma level of albumin (P < 0.05), Ca (P < 0.05), A/G ratio (P < 0.05) and ALT activity (P < 0.01). The dietary inclusion of white lupine seeds resulted in beneficial health effects on certain blood indicators of rabbits, and their use in the proportion of 25% in the pre-weaning diet and 20% in the post-weaning diet can be recommended as a suitable feed additive for dwarf rabbits. The use of crude glycerol as binder in the experimental diet had no adverse effect on the blood indicators of the growing rabbits and thus it can be recommended for the manufacture of feed pellets intended for dwarf rabbits. |
Arbuscular mycorrhizae modify winter wheat root morphology and alleviate phosphorus deficit stressOriginal PaperBoris LAZAREVIĆ, Tomáš LOŠÁK, Ahmad M. MANSCHADIPlant Soil Environ., 2018, 64(1):47-52 | DOI: 10.17221/678/2017-PSE Arbuscular mycorrhizal (AM) root colonization is known to have beneficial effects on plant growth especially under phosphorus (P) deficit conditions. The objectives of present study were: (i) to quantify changes in early wheat root development of AM-inoculated (AMI) and AM-free (AMF) roots under limited P availability; (ii) to assess possible mitigating effect of AM inoculation on photochemical efficiency under P deficit stress. AMI (inoculated with Rhizophagus irregularis) and AMF wheat plants were grown for 20 days in low (1 μmol/L) and high (50 μmol/L)P treatments. AM inoculation affected root morphology and shoot P concentration in low P treatment. AM inoculation alleviated reduction of the total root length in low P treatment, mainly due to an increase of fine roots length(< 0.5 mm). Contrastingly, shoot dry weight was reduced by AM inoculation in low P treatment. P deficiency decreased photochemical efficiency of wheat plants. However, due to increased sink capacity and facilitated nutrient concentrations AM inoculation alleviates phosphorus deficit stress and increased photochemical efficiency. |
Effects of manure enriched with algae Chlorella vulgaris on soil chemical propertiesOriginal PaperNikolaos GOUGOULIAS, Georgios PAPAPOLYMEROU, Vayos KARAYANNIS, Xenofon SPILIOTIS, Nikolaos CHOULIARASSoil & Water Res., 2018, 13(1):51-59 | DOI: 10.17221/260/2016-SWR The effect of the algal species Chlorella vulgaris at six different ratios (0, 1, 2, 3, 4, 5 g) of air dried algae biomass, mixed with 10.18 g of sheep manure, added to 50 g of soil, and incubated for a period of 15 weeks was studied in a laboratory in order to detect the role of adding small amounts of admixed algal biomass to soil in biodegradation of soil organic carbon. The obtained data showed that mineralization of soil organic carbon increased by 16.2-35.9% at all rates of algae addition compared to the control, while the highest increase was observed at the highest rates of algae addition. There was a 40-50% increase in the available form of potassium, while the highest increase was also observed at the highest rates of algae addition. The four times higher rates of added algae increased the corresponding content of nitrate nitrogen by 20-30%, while ammonium nitrogen contents decreased by 9.5-35.7% for all amounts of added algae in comparison with the control. The available forms of copper, manganese, and zinc were also increased for all amounts of added algae by 56.8-61.9%, 55.8-67.3%, and 34.1-40.6%, respectively. On the contrary, the addition of algae did not indicate significant differences among treatments as concerns organic or available phosphorus contents. The results proved the effect of the algae Chlorella vulgaris as an accelerator agent in biodegradation of soil organic matter, without any significant negative impact on soil chemical properties. |
Analgesic efficacy of meloxicam with or without a buprenorphine patch in cats after ovariohysterectomyOriginal PaperS.Y. Heo, S.J. Kim, N.S. KimVet Med - Czech, 2018, 63(6):279-286 | DOI: 10.17221/148/2017-VETMED The purpose of this prospective double blind clinical study was to evaluate the analgesic efficacy of meloxicam with/without a buprenorphine patch for pain management after ovariohysterectomy in cats. Cats were randomly divided into two groups: ten cats were treated with meloxicam s.c. after ovariohysterectomy (Group A), and eight cats were treated with s.c. meloxicam and a 20 µg/h buprenorphine transdermal patch (Group B). For patch treatment, the cat's hair was clipped on the left side in the thoracic area. Pain scores were assessed at 0.5, 1, 2, 4, 6, 8, 24 and 30 h post-ovariohysterectomy extubation. To evaluate postoperative pain, 4A-VET pain scale and visual analogue scale pain scores were used. In addition, blood was collected from all cats to determine the cortisol levels at -2 h and at 0.5, 4, 6 and 24 h after extubation. The 4A-VET scores for Group B were significantly lower at 1, 4, 6, 8, 24 and 30 h than the scores for Group A. The visual analogue scale pain scores for Group B were significantly lower at 4, 6, 24 and 30 h than the scores for Group A. Serum cortisol concentrations were not significantly different between Groups A and B at any of the measured intervals. There was a significant positive correlation between postoperative visual analogue scale and 4A-VET pain scores in both groups. Our results should be subject to careful interpretation as the study was limited by its small sample size and by observer subjectivity. |
Non-isothermal kinetic analysis of the thermal decomposition of spruce wood in air atmosphereOriginal PaperTomáš Ondro, Ivan Vitázek, Tomáš Húlan, Michael K. Lawson, Štefan CsákiRes. Agr. Eng., 2018, 64(1):41-46 | DOI: 10.17221/115/2016-RAE Thermal decomposition of spruce wood (Picea abies) was studied using the thermogravimetric (TG) analysis in air atmosphere from 30°C to 600°C with the heating rates of 5, 10, 15, 20, 25 and 30°C.min-1. The TG results show that the main decomposition region is in the temperature range of 250-360°C, where a total disintegration of hemicellulose and cellulose with partial lignin decomposition can be observed. The values of apparent activation energy for this process are between 168.6-196.5 kJ.mol-1, 179.8-188.1 kJ.mol-1 and 170.1-178.7 kJ.mol-1 determined by the Friedman, Flynn-Wall-Ozawa and Kissinger-Akahira-Sunose methods, respectively. |
Determination of carcinoembryonic antigen and cancer antigen values with the radioimmunoassay method in healthy females dogsOriginal PaperV. Ledecky, A. Valencakova-Agyagosova, J. Lepej, Z. Frischova, S. Hornak, V. NagyVet Med - Czech, 2013, 58(5):277-283 | DOI: 10.17221/6810-VETMED The aim of this study was to determine reference values of carcinoembryonic antigen and cancer antigen in 32 clinically healthy bitches. The average age of the bitches in each group was as follows: small breeds 3.50 ± 2.30, medium breeds 3.83 ± 3.21, large breeds 6.00 ± 3.22 and giant breeds 2.40 ± 2.43. The average weight in each group was as follows: 1st group 7.94 kg ± 1.84, 2nd group 22.38 kg ± 2.77, 3rd group 35.94 kg ± 7.16, and 4th group 52.75 kg ± 5.04. The cancer markers were determined using human kits. The mean values of the carcinoembryotic antigen markers ± SD were as follows: 1st group 0.18 ± 0.03, 2nd group 0.20 ± 0.03, 3rd group 0.22 ± 0.01, 4th group 0.18 ± 0.04. The statistical significance for the carcinoembryonic antigen markers was P = 0.0042**. The values of cancer antigen markers ± SD were: 4.90 ± 1.04, 4.80 ± 1.13, 5.90 ± 1.22, and 4.72 ± 0.97, respectively. The cancer antigen values were statistically insignificant (P = 0.1762). Based on obtained values of the mean 95%, we expect a standard for carcinoembryonic antigen of 0.00-0.23 ng/ml and for cancer antigen 0.0-7.00 IU/ml. The results of the present study show that it is possible to use human kits for the determination of carcinoembryonic antigen and cancer antigen in clinically healthy bitches using the radioimmunoassay method. |
Isolation and characterization of polymorphic microsatellite markers in Toxicodendron vernicifluumOriginal PaperDinh-Duy VU, Thi Tuyet-Xuan BUI, Thi Hong-Nhung NGUYEN, Syed Noor Muhammad SHAH, Ngoc-Ha VU, Ya-Hong ZHU, Lei ZHANG, Yi ZHANG, Xiao-Hua HUANGCzech J. Genet. Plant Breed., 2018, 54(1):17-25 | DOI: 10.17221/183/2016-CJGPB A total 20 074 230 sequencing reads were generated by Illumina HiSeq™ 2500 from three different Toxicodendron vernicifluum tissue samples. In total, 48 693 unigenes with an average length of 703.34 bp were obtained by de novo assembly. 3392 potential EST-SSRs (expressed sequence tag-simple sequence repeat) were identified as potential molecular markers from unigenes with lengths exceeding 1 kb. A total of 80 pairs of PCR primers were randomly selected to validate the assembly quality and develop EST-SSR markers from genomic DNA. Of these primer pairs, 14 primer pairs successfully amplified DNA fragments and detected significant amounts of polymorphism within the lacquer tree population in Langao, Shaanxi province, China. There were high genetic diversities (number of alleles per locus (A) = 2.93, polymorphic information content (PIC) = 0.53, observed heterozygosity (Ho) = 0.62 and expected heterozygosity (He) = 0.85) in the lacquer tree natural population. The four loci were significantly deviated from Hardy-Weinberg equilibrium. These results suggested high homozygosity in the population and low or deficiency in heterozygosity (inbreeding coefficient (Fis) = 0.27). These polymorphic EST-SSR markers will provide the base for further studies of genetic structure and breeding in T. vernicifluum. |
The use of Snyder synthetic hydrograph for simulation of overland flow in small ungauged and gauged catchmentsOriginal PaperDarya FEDOROVA, Pavel KOVÁŘ, Jan GREGAR, Andrea JELÍNKOVÁ, Jana NOVOTNÁSoil & Water Res., 2018, 13(4):185-192 | DOI: 10.17221/237/2017-SWR The paper presents the results of simulated overland flow on the Třebsín experimental area, Czech Republic, using the Snyder synthetic unit hydrograph. In this research an attempt was made to discover a new approach to overland flow simulation that could give precise results like the KINFIL model for a small ungauged catchment. The provided results also include a comparison with the KINFIL model for N = 10, 20, 50 and 100 year recurrence of rainfall-runoff, with the rainfall time duration td = 10, 20, 30, and 60 min. Concerning a small gauged catchment, one of the most accurate and elegant methodologies, Matrix Inversion Model, can be used for the measurement of both the gross rainfall and the runoff. This method belongs to a matrix algebra concept. For the sake of completeness, we designated this model at the end of the present article to show how exact this forward march can be. |
Corpus luteum development and its morphology after aspiration of a preovulatory follicle is related to size and steroid content of the follicle in dairy cowsOriginal PaperA. Vernunft, J.M. Weitzel, T. ViergutzVet Med - Czech, 2013, 58(4):221-229 | DOI: 10.17221/6760-VETMED Secretion of adequate levels of progesterone from a proper corpus luteum (CL), which develops out of the cells of a healthy preovulatory follicle, is a key-factor for establishment of a pregnancy. The aim of this study was to investigate the relationship between morphological and secretory characteristics of preovulatory follicles and their corresponding corpus luteum with regard to the post-partum period in high-yielding dairy cows. Therefore, ultrasound-guided aspirations of preovulatory follicles were performed repeatedly, using 20 first lactating cows between 26 and 121 days after parturition. Heat was induced with a PGF analogon followed by administration of a GnRH analogon. The dominant follicle was aspirated 21 h after administration of the GnRH analogon. The diameters of the follicles were estimated at aspiration and the morphology of the resulting luteal tissue was examined on day 14 after follicle aspiration using ultrasonographic examinations. Concentrations of progesterone (P4) and 17-beta-oestradiol (E2) were determined in the follicular fluids (FF) and P4 concentration was estimated at the time of CL examination in plasma. A CL development occurred in 82% after dominant follicle aspiration. The interval of time between parturition and follicle aspiration did not affect the investigated variables. The diameter of the aspirated preovulatory follicle was positively correlated to the cross-section area of the developed luteal tissue (R = 0.60; P < 0.01) as well as to the plasma P4 concentration on day 14 after follicle aspiration (R = 0.47; P < 0.05). Also, E2 concentrations in FF were positively correlated to cross-section area of the luteal tissue (R = 0.54; P < 0.05). Comparing the FF of the follicles that gave rise to a CL after aspiration to follicles that did not, both types had comparable P4, but the former type harboured higher E2 concentrations. In conclusion, preovulatory follicle diameter as well as steroid concentrations in the follicular fluid could be used prospectively to identify cows which will have well-developed CLs and high plasma P4 levels later. On the other hand, CL development after follicle aspiration can be used as a retrospective quality parameter of dominant follicles. These results will help to identify suitable animals for breeding or recipients for embryo transfer. |
An assessment of biological control of Polygraphus major Stebbing, 1903 (Coleoptera: Curculionidae) by entomopathogenic fungiOriginal PaperAbdul Lateef KHANDAY, Abdul Ahad BUHROOJ. For. Sci., 2018, 64(4):178-186 | DOI: 10.17221/140/2017-JFS Recently the use of fungal entomopathogens against bark beetles has gained increasing attention throughout the world and researchers continue to seek highly pathogenic fungal isolates for controlling beetle pests. In the present study, the efficacy of three entomopathogenic fungi, namely Beauveria bassiana (Balsamo) Vuillemin, Metarhizium anisopliae sensu lato (Metchnikoff) Sorokin and Lecanicillium lecanii (Zimmerman) Zare & Gams, was tested against Polygraphus major Stebbing, 1903 under laboratory conditions. Each fungal suspension contained 1.0 × 109 spores of fungi in 1 ml. An insecticide - Cyclone was also used as positive control in the experiment. The mortality caused by these fungi was recorded in treated branches and petri plate assay. In treated branches, B. bassiana and M. anisopliae s. l. caused higher mortality, i.e. 57.77 and 46%, respectively, after 10 days of treatment and 98 and 92.77%, respectively, after 20 days of treatment. The results of the petri plate assay revealed that P. major adults were highly susceptible to both applied fungal species and insecticide. However, B. bassiana and M. anisopliae s. l. caused higher percentage mortalities after six days of treatment, i.e. 100 and 91.66%, respectively. The percentage mortality caused by application of the insecticide was 69%. L. lecanii was observed to be significantly less virulent (mortality 46.66%) in all fugal treatments. After observing the promising nature of the three entomopathogenic fungi by testing them, we arrive at the conclusion that the tested fungi have a potential for the control of P. major, and further field experiments are warranted to investigate their efficacy under more practical conditions. |
Incidence of lettuce downy mildew (Bremia lactucae) and powdery mildew (Golovinomyces cichoracearum) in natural populations of prickly lettuce (Lactuca serriola)Original PaperBarbora MIESLEROVÁ, Aleš LEBEDA, Irena PETRŽELOVÁ, Pavla KORBELOVÁPlant Protect. Sci., 2013, 49(10):S24-S32 | DOI: 10.17221/51/2013-PPS The study was focused on the wild pathosystem Lactuca serriola-lettuce downy mildew (Bremia lactucae) and lettuce powdery mildew (Golovinomyces cichoracearum). Observations were focused mainly on recording natural infection of prickly lettuce (Lactuca serriola) by downy and powdery mildews in the East Bohemia and Moravia (the Czech Republic) in the May-September period of 2007-2011, and on the influence of environmental conditions on disease incidence. Only data for July and August were used for the detailed comparisons of occurrence of both pathogens, because intensity of disease in this period was the highest. Data were linked with the average monthly temperature and rainfall rate in the Czech Republic. G. cichoracearum prefers rather low levels of precipitation and temperatures around 20°C, therefore significantly higher incidence of this pathogen was recorded in August 2007. On the other hand in July 2009 and 2010, when the intensities of precipitation were higher, incidence of Bremia lactucae prevailed. In August 2010 and 2011 incidence of both pathogens were more or less similar at all locations. Our observations showed that climatic conditions influence the incidence and prevalence of both pathogens in weedy growing populations of Lactuca serriola. |
The effect of seed priming on field emergence and root yield of sugar beetOriginal PaperBeata MICHALSKA-KLIMCZAK, Zdzisław WYSZYŃSKI, Vladimír PAČUTA, Marek RAŠOVSKÝ, Agnieszka RÓŻAŃSKAPlant Soil Environ., 2018, 64(5):227-232 | DOI: 10.17221/136/2018-PSE The effect of sugar beet seed (primed and non-primed) on field emergence and root yield of sugar beet was examined. The experiment was realized in the years 2012-2014 at an Experiment Field Station of Warsaw University of Life Sciences - SGGW Faculty of Agriculture and Biology in Skierniewice (51°97'N, 20°19'E) in Poland. The experimental factor was diversified seed material of the same cultivar of sugar beet - typical seeds, traditionally prepared for sowing (non-primed seeds) and seeds before sowing, subjected to the process of priming. On average for the three years of the study, no significant effect of seed priming on the field emergence was found. On the other hand, the sugar beet emergence on plots with primed seeds was faster, more even and uniform. Seed priming, on average for the three years of the study, significantly increased the mean root mass during harvest. In contrast, priming the seeds did not cause an increase in the final plant density. No significant effect of seed priming on root yield was found, both on average for the studied period and in particular years of the study. |
Reproductive efficiency of Pelibuey and Romanov × Pelibuey ewes synchronized with synthetic progesterone and low doses of PMSG under a hot environmentOriginal PaperU. Macías-Cruz, J.L. Ponce-Covarrubias, F.D. Álvarez-Valenzuela, A. Correa-Calderón, C.A. Meza-Herrera, L. Avendaño-ReyesCzech J. Anim. Sci., 2013, 58(12):546-553 | DOI: 10.17221/7089-CJAS Thirty-nine multiparous ewes (19 Pelibuey and 20 Romanov × Pelibuey) treated with fluorogestone acetate impregnated intravaginal sponges were used to evaluate the effects of low pregnant mare serum gonadotropin (PMSG) doses and genotype on their reproductive efficiency under heat stress conditions. The sponge treatment lasted for 12 days, and 24 h before sponge removal, ewes of each genotype were injected with 140 or 280 IU of PMSG. Ewes showing estrus were naturally mated twice. Reproductive performance was not affected (P > 0.05) by the dose × genotype interaction. All treated ewes presented estrus signs within a 48-h period after sponge removal. Shorter (P < 0.05) estrus interval and higher (P < 0.05) fecundity were observed in ewes treated with 280 IU of PMSG compared to those treated with 140 IU. Pelibuey ewes exhibited shorter (P < 0.01) estrus interval and greater (P < 0.01) fertility as compared with Romanov × Pelibuey ewes. The response to estrus, gestation length, prolificacy, and percentage of single and multiple lambing were not affected (P > 0.05) by dose or genotype. In conclusion, under heat stress conditions, low PMSG doses as 140 or 280 IU can be used to successfully induce and/or synchronize the estrus in Pelibuey ewes and their crosses with Romanov, regardless of reduced fertility observed in crossed Pelibuey ewes. If a more predictable and compact estrus is required, administration of 280 IU of PMSG is recommended. |
