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Analysis of therapeutic results and complications after colic surgery in 434 horsesJ. Mezerova, Z. Zert, R. Kabes, L. OttovaVet Med - Czech, 2008, 53(1):12-28 | DOI: 10.17221/1934-VETMED Out of the total number of 434 horses that underwent colic surgery, small intestine was operated in 195 (44.9%) patients, caecum in 10 (2.3%) horses, large colon surgery was performed in 196 (45.2%) cases and small colon surgery in 14 (3.2%) horses. In 12 patients (2.8%) two different parts of the gastrointestinal tract were affected simultaneously, one horse suffered from peritonitis, torsion of the uterus developed in two mares and three animals had negative surgical findings. Of 434 horses, 371 (85.5%) survived. After small intestinal surgery, 159 patients (81.5%) recovered from anaesthesia and were discharged home as well as seven horses (70%) after caecal surgery, 175 horses (89.3%) after large colon surgery and 14 horses (100%) following small colon surgery. 75 out of 103 horses (72.8%) were discharged home after the small intestinal resection and 89 of 98 horses (90.8%) with small intestinal problems where no resection was needed. In total, 43 of the patients that underwent one surgery did not survive the immediate postoperative period. The most frequent lethal complications in horses following the small intestinal surgery included peritonitis (five horses) and paralytic ileus (four horses) and in horses with large colon problems it was typhlocolitis (six cases). Relaparotomy was indicated in 41 of 434 horses (9.4%) that recovered from colic surgery. 21 out of the 41 (51.2%) relaparotomised colic patients were released from the clinic. All successfully repeated surgeries were carried out to overcome primary small intestine ileus problems, and in 14 of these cases (66.7%) resection and anastomosis were performed. The most common finding, diagnosed in 9 of 21 reoperated horses, was paralytic ileus. Of 20 relaparotomised horses that did not survive, three animals were lost after the introduction of anaesthesia, nine horses were euthanised after the abdominal cavity revision, one horse did not recover after the surgical procedure and seven horses did not survive the postoperative period. In 15 of 20 dead horses, the cause of the first surgical intervention was small intestinal ileus, in other four horses there was a large colon problem and in the last patient, it was a stomach disease. In 13 of 15 (86.7%) horses with small intestinal problems and in three of four (75%) patients with large colon disease, either resection or bypass was performed. In the remaining four non-surviving horses of 20 relaparotomised ones, peritonitis and/or adhesion formation was diagnosed at the second surgery, in three horses anastomosis complications were the main problem. Peritonitis or paralytic ileus led to death or euthanasia in four of seven horses that recovered after relaparotomy. |
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. |
Mitigation of ammonia volatilization with application of urease and nitrification inhibitors from summer maize at the Loess PlateauOriginal PaperMuneer AHMED, 3, Weijia YU, Ming LEI, Sajjad RAZA, Jianbin ZHOUPlant Soil Environ., 2018, 64(4):164-172 | DOI: 10.17221/46/2018-PSE Field experiments were conducted at three sites: Yangling (YL); Zhouzhi-1 (ZH-1) and Zhouzhi-2 (ZH-2) of the Loess Plateau during summer maize crop, to investigate the effectiveness of N-(n-butyl) thiophosphoric triamide (NBPT) and NBPT + dicyandiamide (DCD) with urea on reducing NH3 volatilization from different soils under different environmental conditions. Four treatments including control (no N), N-220 kg/ha, N-220 + NBPT and N-220 + NBPT + DCD were applied in two splits through the band placement method. Total NH3-N loss observed were 65.8, 40.5 and 20.1 NH3-N kg/ha (accounting for 29.9, 18.4 and 9.2% of N applied) from urea for YL, ZH-1 and ZH-2, respectively. The application of NBPT and NBPT + DCD significantly reduced NH3 volatilization by 80-93% and 75-90%, respectively. The meteorologic factors such as precipitation, air temperature and wind speed significantly affected NH3 volatilization. These results suggested that the amendment of urea with NBPT and NBPT + DCD have potential to mitigate NH3-N losses from alkaline soils in the Loess Plateau. |
Functional properties of blade tiller working toolsOriginal PaperRadek Pra¾an, Josef Hùla, Pavel Kovaøíèek, Jakub Èedík, Ilona Gerndtová, Marcela Vlá¹kováRes. Agr. Eng., 2018, 64(2):63-69 | DOI: 10.17221/106/2017-RAE After the harvest of winter wheat, the tensile force, cross section of loosened soil and specific resistance of soil were measured on a loamy soil plot. During the comparative measurements, 3 blades were used with chisel width of 20 mm, 40 mm and 75 mm. In case of all blades, the measurements were carried out at the depth of 100, 200 and 300 mm. In the course of measurements, the standards of blades were attached in a measuring frame on six-component hinge with connected tensometric sensor. The selected blades were developed for a new type of tiller destined for primary cultivation of soil. Moreover, in case of a blade equipped by chisel there were used side wings of a width of 110, 150 and 200 mm for tillage into a depth of 100 mm. It was found that the width of blade chisels did not have a statistically significant effect on the values of specific resistance of soil during the soil tillage. At all widths of blade chisels, a trend of an increase in specific resistance of soil was recorded at growing recess into the soil. |
Overexpression of a sorghum SnRK1βγ2 gene increases the biomass in Setaria viridis but not in riceShort CommunicationChudamani Sharma Prakash, Lihua Wang, Qi Shen, Jieqin Li, Yi-Hong WangCzech J. Genet. Plant Breed., 2025, 61(1):50-53 | DOI: 10.17221/63/2024-CJGPB Sorghum as a C4 crop has been shown to be both drought tolerant and photosynthetically productive. In this study, we demonstrated that sorghum SbSnRK1βγ2 (SbSNF4-2), the γ subunit of the sucrose non-fermenting 1 (SNF1)/SNF1-related protein kinase 1 (SnRK1) heterotrimeric complex, increased the plant height and biomass in Setaria viridis, a C4 relative of sorghum, but not in rice, a C3 relative, when overexpressed driven by the maize ubiquitin promoter. However, the overexpression did not increase the tiller number in S. viridis, although it caused modest increases in the tiller number in both sorghum and rice. In addition, SbSnRK1βγ2 did not affect the panicle weight in sorghum, but its overexpression doubled the panicle weight in S. viridis in all four evaluated transgenic lines. Overall, the overexpression of SbSnRK1βγ2 tripled the biomass production in S. viridis, indicating SbSnRK1βγ2’s potential in any future cellulosic biofuel production and S. viridis’ utility as an alternative genetic vehicle to functionally characterise sorghum genes. |
Indication of environmental changes in mountain catchments by dendroclimatologyOriginal PaperJiøí VRTI©KA, Josef KØEÈEK, Roberto TOGNETTISoil & Water Res., 2018, 13(4):208-217 | DOI: 10.17221/199/2017-SWR In the Czech Republic, mountain watersheds are mostly forested with dominant Norway spruce (Picea abies) plantations. The aim of this paper is to analyse changes in radial growth and xylem anatomy of Norway spruce trees in the upper plain of the Jizera Mountains, related to changes in climate (air temperature, precipitation), air pollution and acid atmospheric deposition. Data of two neighbouring climate stations were used to detect trends in air temperatures and precipitation. At elevations of 745-1060 m a.s.l., the ring-width growth was significantly affected by mean annual temperature, while impacts of elevation and precipitation were not significant. In the period 1975-1995, the detected drop in tree radial growth (ca 60% of the normal period, prior to the peak of acid atmospheric deposition) corresponded to the increase in atmospheric SO2 concentrations and acid atmospheric deposition. The number of cells in tree rings decreased by ca 30-40% in comparison with the normal period, but the mean size of cells did not change significantly. In the last 20 years, increasing radial growth has been detected simultaneously with rising air temperature, and density of cells decreased by 30% in early wood, and by 10% in late wood, increasing the total number of cells in tree rings by ca 10% in comparison with the normal period. Integrated effects of climate and non-climate variables on the variation of tree radial growth in the Jizera Mountains reflected the legacy of acid atmospheric deposition in the forest ecosystem. |
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. |
Evaluation of kaolin-activated thromboelastography and sample stability in healthy horsesOriginal PaperK. Machackova, M. Boselova, I. Vanova, Z. Drabkova, J. DoubekVet Med - Czech, 2018, 63(5):203-209 | DOI: 10.17221/16/2018-VETMED Thromboelastography is an accurate alternative to routine coagulation testing for the monitoring of haemostasis. However, its use in equine medicine is limited not only by the lack of reference interval values for kaolin-activated citrated samples, but also by the limited accessibility of the test for field practitioners within the 2-hour storage time recommended by the manufacturer. To address this issue, we here evaluated kaolin-activated thromboelastography using a TEG® 5000 Thrombelastograph® Hemostasis System in 36 healthy horses, and sample stability was evaluated at four timepoints post collection in seven horses. Reference values were established as follows: reaction-time 5.0-16.0 min, K-time (period in which the clot strength reaches 20 mm of amplitude) 1.1-5.2 min, α-angle (speed of fibrin cross-linking) 36.5-79.0°, maximal amplitude 44.5-69.7 mm, fibrinolysis 30 minutes after maximal amplitude was reached 0.0-2.8%. During storage, the trends in the changes of values were similar for most parameters, and values remained mostly within the reference intervals. Thromboelastography is thus useful in defining thrombohaemorrhagic complications in horses but can be sensitive to preanalytical factors and storage. |
Agrarian change through sustainable agri-tech adoption in a challenging rice farming region: A panel data analysisOriginal PaperFaruque As Sunny, Juping Lan, Mohammad Ariful IslamAgric. Econ. - Czech, 2024, 70(12):606-620 | DOI: 10.17221/79/2024-AGRICECON To achieve the coveted objectives of sustainable development, the Bangladesh government has devised a comprehensive strategy to promote the adoption of innovative agricultural practices capable of addressing the critical challenges at the intersection of food, energy, water, and ecosystems (FEWE). This plan prioritises the increased uptake of solar irrigation and recommended fertiliser application (SIRFA) technologies to enhance sustainable food production while effectively managing energy and water resources, and fostering ecological balance. Thus, this study analysed seven years of panel data (2015–2021) to assess the long-term impact of SIRFA technology adoption on production costs (PC) and return on investment (ROI) among Bangladeshi farmers cultivating the BRRI-dhan29 rice variety in the water-scarce, acidic soils of Dinajpur. Utilising the generalised estimating equation (GEE) with a population-averaged model, we investigated the determinants of adoption. Additionally, we applied a two-stage residual inclusion (2SRI) method alongside six linear panel-data models to analyse the impact of SIRFA adoption. Our findings revealed that adopters experienced reduced production costs and enhanced ROI through SIRFA technology adoption. These results emphasised the urgent need for region-specific policy interventions to facilitate the broader adoption of SIRFA technologies. |
Development of PCR-based markers associated with powdery mildew resistance using bulked segregant analysis (BSA-seq) in melonOriginal PaperYawo Mawunyo Nevame Adedze, Xia Lu, Wenyi Fan, Wenting Zhang, Xue Yang, Zhijun Deng, Md. Amirul Alam, Guangli Xu, Lihua Zhang, Wenhu LiCzech J. Genet. Plant Breed., 2024, 60(1):25-33 | DOI: 10.17221/40/2023-CJGPB Powdery mildew (PM) is a fungus that causes disease in both the field and the greenhouse. Utilizing resistant cultivars is the most effective approach of disease management. To develop insertion-deletion (InDel) markers associated to this trait, the whole genomes of the PM resistant line M17050 (P1) and the PM-susceptible line 28-1-1 (P2) were sequenced. A total of 1 200 InDels, with an average of 100 markers per chromosome, were arbitrarily chosen from the sequencing data for experimental validation. One hundred InDel markers were ultimately selected due to their informative genetic bands. Further, an F2 segregating population of melons generated from these two parents was inoculated by the PM pathogen. Based on bulk segregant analysis (BSA) using these 100 InDel markers, the powdery mildew resistance was associated with the genomic region LVpm12.1 on the melon chromosome 12. This region overlapped the previously described quantitative trait locus (QTL)-hotspot area carrying multiple PM-resistance QTLs. Moreover, conventional QTL mapping analysis was done, which located LVpm12.1 in the region between 22.72 and 23.34 Mb, where three highly polymorphic InDel markers MInDel89, MInDel92, and MInDel93 were detected. Therefore, these markers could be used to track this resistance locus in melon while the lines carrying this locus could be employed in PM melon resistance breeding programs after validation tests. |
Chemical composition and antimicrobial activity of essential oils from six lavender (Lavandula angustifolia Mill.) cultivarsOriginal PaperSıla Barut Gök, Yasemin ErdoğduPlant Soil Environ., 2024, 70(2):111-123 | DOI: 10.17221/438/2023-PSE The present study aimed to determine the chemical composition and in vitro antimicrobial potential for the first time of essential oils (EOs) from six cultivars (Druzhba, Raya, Hebar, Hemus, Yubileina, Sevtapolis) of lavender (Lavandula angustifolia Mill.) cultivated in Türkiye (Tekirdağ) against a panel of pathogenic and non-pathogenic microorganisms. The chemical composition of EOs, analysed using gas chromatography/mass spectrometry (GC/MS), revealed 34 different components in the six cultivars. The results indicate that the main major constituents of all EOs were monoterpenoid linalool (47.60–64.13%) and linalyl acetate (12.92–26.08%). Based on principal component analysis (PCA) cvs. Druzhba, Raya and Hebar were situated in the centre right quadrant of the plot and were characterised by linalool and linalyl acetate in subgroup one. The results of antimicrobial assays revealed that lavender EOs were active against all strains of bacteria tested. For bacteria, the strongest activity of cv. Hemus was observed against Enterococcus faecalis (IZ = 19 ± 0.10 mm, MIC = MMC = 6.25 (µg/mL), while the weakest potency was seen against the gram-negative Salmonella enterica (IZ = 21 ± 1.00 mm, MIC = MMC = 31.25 (µg/mL). Based on PCA, the first subgroup of cvs. Hebar and Raya was characterised by Lactobacillus rhamnosus, E. faecalis and Lactobacillus pentosus and was situated in the bottom right quadrant of the plot. |
Fabrication and performance test of a multipurpose ohmic heating apparatus with a real-time data logging system based on low-cost sensorsOriginal PaperDiang Sagita, Dadang Dayat Hidayat, Doddy Andy Darmajana, Ari Rahayuningtyas, Hari HariadiRes. Agr. Eng., 2024, 70(1):23-34 | DOI: 10.17221/21/2023-RAE Ohmic heating is an emerging technology currently in high demand for application in various processes. In this research, a prototype of a multipurpose ohmic heating apparatus was successfully designed, fabricated, and tested. This apparatus was designed based on low-cost and versatile sensors and components available worldwide. Three independent chambers could be operated parallelly and individually with different treatments. Parameter data, i.e., voltage, electrical current, the temperature of heated material and environmental humidity-temperature, could be recorded by an embedded data logging system. The sensor had been tested and validated by comparing all the sensors used with commercial standard instruments. The result showed that all sensors had high measurement accuracy, indicated by very low mean absolute error (MAE) and mean absolute percentage error (MAPE), with R2 > 0.999. The performance test revealed that product temperature could be accurately maintained according to the set point temperature with a deviation value lower than 0.1 °C. The data logging system was able to record and store the parameter data in SD card memory for up to several days without interruption. The prototype of the ohmic heating apparatus could be an effective alternative to process many purposes such as pasteurisation, cooking, warming, and fermentation based on the ohmic heating principle. |
Ecological and human health risk assessment of tungsten and other heavy metal(loid)s in farmland around a typical tungsten mining area in southern Jiangxi, ChinaOriginal PaperQi Li, Li Tian, Xiaojun Zheng, Weijiang Chen, Buchan Zhou, Ming ChenPlant Soil Environ., 2024, 70(4):229-244 | DOI: 10.17221/344/2023-PSE The ecological and human health risks of heavy metal(loid)s (HMs) in soils around tungsten (W) mining sites have often disregarded the presence of W. In this study, we aimed to investigate the concentrations of 10 HMs (including W and other accompanying elements) in 18 agricultural soil samples obtained around a W mining site in southern Jiangxi, China. Furthermore, we determined the contamination status, source identification, and ecological and health risks of HMs in soils. Our findings revealed that HMs were extensively accumulated in soils within the study area, with the highest mean concentrations of W found. W concentrations were above background values at all sites. Multivariate analysis revealed that W mining activities, including extracting and transporting W ore, were the primary source of HMs in the soil (61.40%). The ecological risk assessment revealed that the potential ecological risk across the survey area exhibited a high risk, and the cadmium (Cd) and W should be prioritised as control pollutants for soils around the W mine site. The human health risk assessment displayed that 73.43% of children with an unacceptable non-carcinogenic risk, and W contributed the most to the overall non-carcinogenic risk (42.32%), followed by Cd and arsenic (As). In addition, 22.03% of children and 13.4% of adults were under a significant carcinogenic risk. Overall, our findings emphasise the importance of considering element W in future studies investigating the contamination of HMs around W mining areas. As such, we calculated a safe limit value for element W in soil (141.01 mg/kg) to facilitate the conservation and development of soils in W mining areas in China. Our study provides valuable information for pollution prevention and soil contamination risk mitigation in W mining areas. |
Sixty-year anniversary of the journal Plant Protection ScienceReviewAle¹ Lebeda, Vìra Kroftová, Radovan PokornýPlant Protect. Sci., 2024, 60(4):311-327 | DOI: 10.17221/182/2024-PPS In 2024, the journal Plant Protection Science (PPS) completes 60 years of publication (1965–2024). Its roots extend back to the year 1921. In recent years, PPS has developed into an international scientific journal focused on all aspects of plant protection science, published exclusively in English, and with an international editorial board. The publisher is the Czech Academy of Agricultural Sciences (CAAS), celebrating its 100th anniversary (1924–2024). PPS is one of eleven agricultural journals published by CAAS. On its 50th anniversary, PPS published a detailed overview of its history and development. This latest critical review summarises developments during the last ten years; however, in special cases, also with a longer-term perspective. During the last decade, PPS has made impressive progress and is now among the world's key scientific journals. Recently, the journal has been added to the indexing and abstracts of many international databases, e.g. BIOSIS Previews, SCOPUS and Web of Science. In 2014, PPS had an impact factor of 0.597, but during the last few years, PPS's IF has ranged between 1.3 and 1.4 (for 2023, IF = 1.7), with the possibility of further increase. Each year, PPS is published quarterly, with a total of around 40 papers (original papers, reviews, short communications, biographical notices, and book reviews). Per year, about 70–80% of papers by authors/co-authors from abroad are published (Europe, America, Asia, Australia and Oceania). In the final part of this presentation, we describe some recent achievements and discuss key topics related to PPS's future development. |
Determining saturated hydraulic conductivity of a repacked loam soil by the simplified falling-head technique: Impact of sieving duration and scraping of exposed surfacesOriginal PaperDario Autovino, Vincenzo Bagarello, Gaetano Caltabellotta, Mariachiara Fusco, Massimo IovinoSoil & Water Res., 2024, 19(4):210-217 | DOI: 10.17221/79/2024-SWR Many methods are used in a laboratory for packing sieved soil. Determination of soil properties is expected to vary with the applied packing method. The objective of this investigation was to test the impact of initial soil sieving duration and scraping of exposed soil surfaces on saturated hydraulic conductivity (Ks) of an initially air-dry loam soil determined by the simplified falling-head technique. Two sieving durations (5 and 30 min) were considered. A brush was used to scrape exposed surfaces for half of the tested soil columns. A long sieving yielded finer soil than a short sieving and 9–22% smaller values of Ks. Scraping the exposed soil surfaces yielded 4–17% smaller Ks values than those obtained on the not scraped columns. None of the observed differences was statistically significant. Therefore, sieving duration and treatment of the exposed soil surfaces were minor factors influencing the determination of Ks. Reaching general conclusions about sieving duration and scraping effects requires testing these factors with other soils, initial soil water conditions and Ks measurement techniques. |
Determinants of the demand for fruits and vegetables: Preferences by age and gender in EuropeOriginal PaperElena Ho¹ková, Iveta ZentkováAgric. Econ. - Czech, 2024, 70(8):414-423 | DOI: 10.17221/394/2023-AGRICECON
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Impact of winter conditions on wind erosion susceptibility of clay soilsOriginal PaperJosef Kuèera, Martin Blecha, Jana Podhrázská, Jan Szturc, Petra Fukalová, Hana StøedováSoil & Water Res., 2024, 19(4):218-228 | DOI: 10.17221/90/2024-SWR Wind erosion primarily affects sandy soil in arid areas. However, the specific winter meteorological conditions (freeze-thaw cycles) lead to the disintegration of aggregates into erosion-risk fractions even on clay soils. These changes in the winter erodibility of clay soils were investigated in an area with frequent occurrences of wind erosion in southeastern Moravia (Czech Republic, Central Europe) between the years 2014/2015 and 2020/2021. The percentage of non-erodible fraction (NEF) before and after winter was assessed. NEF was set as particles larger than 0.84 mm and also larger than 2.00 mm (based on field observations), while soils containing less than 40% NEF have the highest susceptibility to wind erosion. Autumn NEF0.84 content was 80 and 95%, indicating significant resistance to wind, and although there was a significant decrease in spring to 65%, it still exceeded the 40% threshold. Autumn NEF2.00 content of 60–70% also indicates a significant resistance to wind erosion. However, spring values were well below the 40% threshold (8 to 35%), indicating significant susceptibility to wind erosion. It showed a significant negative influence of winter on NEF2.00 content and, thus, a greater susceptibility to erosion in spring compared to NEF0.84. Our results also document vegetation efficiency on the presence of NEF. |
Optimisation of the inhibitory effect of Lactiplantibacillus plantarum, nisin, and lysozyme to prevent the late blowing defect in a cheese modelOriginal PaperSinan Akbal, Zübeyde ÖnerCzech J. Food Sci., 2024, 42(5):330-339 | DOI: 10.17221/78/2024-CJFS
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Diversity of cultivable lactic acid bacteria and bacilli in traditional fermented foods in VietnamOriginal PaperGiang Phan Thi Hang, Markéta Husáková, Petr Ka¹tánek, Petra PatakovaCzech J. Food Sci., 2024, 42(6):435-446 | DOI: 10.17221/162/2024-CJFS
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Modelling of energy demand prediction system in potato farming using deep learning methodOriginal PaperRiswanti Sigalingging, Nasha Putri Sebayang, Noverita Sprinse Vinolina, Lukman Adlin HarahapRes. Agr. Eng., 2024, 70(4):198-208 | DOI: 10.17221/115/2023-RAE Agriculture and energy are intricately connected, with agriculture being a significant energy consumer and supplier. In this comprehensive study, SPSS and Jupyter Notebook were used to model and predict the energy requirements of potato plants during cultivation. A system using deep learning methods, specifically the Convolutional Neural Network (CNN), was also developed to accurately predict the classification of potato plant growth phases using image data. The CNN model, developed with 100 epochs and 5 layers, used 1 125 image data of potato plants, categorising them into two classes: the vegetative phase, with an energy requirement of 4 195.80 MJ·ha–1, and the generative phase, with an energy requirement of 746.45 MJ·ha–1. The model‘s accuracy in reflecting the actual data, with a mean absolute error of 0.11, mean square error of 0.01, and root mean square of 0.13, indicates no significant issues. The test predicted categorization with 99% precision, underscoring the thoroughness and validity of this study and reassuring the audience about the accuracy of the results. The study findings not only validate the use of deep learning in agriculture but also inspire the development of applications to predict the energy demand for each growth phase using plant image data. |
Nutrient content in biomass of bilberry (Vaccinium myrtillus L.) in different habitats of protected areas of Inner Western CarpathiansOriginal PaperMartin Kubov, Rastislav Janík, Jakub Tomes, Branislav SchieberJ. For. Sci., 2024, 70(4):161-175 | DOI: 10.17221/110/2023-JFS The primary objective of this paper was to compare the nutrient content (N, Ca, S, K, P, Mg) of bilberry biomass, both aboveground and underground, growing in different habitats along the altitudinal gradient. The research was conducted in protected areas of the High Tatras National Park (Slovakia). Two different habitats subjected to study, namely spruce forest stands affected by disturbances (D – disturbed forest stands) and stands unaffected by disturbances (U – undisturbed forest stands), were located at different altitudes: 1 100 m a.s.l., 1 250 m a.s.l., and 1 400 m a.s.l. We found significant differences in the soil nutrient content along the altitudinal gradient. The highest content of nutrients was detected mostly at the highest altitudes in both habitats. The minimum reached 0.01 g·kg–1 (phosphorus), while the maximum was 8.33 g·kg–1 (nitrogen). In the case of the bilberry biomass, we found statistically non-significant differences in the content of nutrients among the altitudes within both habitats (D vs. U). The principal component analysis (PCA) showed that the aboveground biomass of bilberry had a significantly higher nutrient content compared to the underground biomass. Nutrient content in aboveground and underground biomass ranged from 1.00 g·kg–1 (phosphorus) to 13.49 g·kg–1 (nitrogen) and from 0.38 g·kg–1 (magnesium) to 7.55 g·kg–1 (nitrogen), respectively. The biological absorption coefficient (element content in dry biomass/element content in soil) reached the highest values mostly at the lowest altitude for both aboveground and underground biomass. |
Farm size and greenhouse gas emission: Do large farms in China produce more emissions?Original PaperZhe Zhao, Fan Zhang, Yiqiong Du, Xin Xuan, Ying Cai, Gui JinAgric. Econ. - Czech, 2024, 70(3):112-124 | DOI: 10.17221/307/2023-AGRICECON Farms are key to agricultural advancement and carbon emission reduction. Understanding the influence of farm size on emissions is vital for eco-friendly farming. Our study used an econometric model with instrumental variable adjustments to examine the effect of farm size on greenhouse gas emissions, revealing an inverted U-shaped relationship. The findings revealed that emissions increased with farm size until a peak and then decreased. We identified an optimal farm size range (0.45 km² to 0.58 km²) for lower emissions, where the farm size maintaining the lowest greenhouse gas emissions per unit area was 0.58 km², while the lowest greenhouse gas (GHG) emissions per capita occured at a farm size of 0.69 km². Reducing emissions intensity per unit area is easier than reducing GHG emissions per person. Policymakers should prioritise promoting the expansion to moderately sized farms as a means of achieving emission reduction targets rather than solely increasing the number of farms. Overall, these insights offer policymakers novel approaches for ecological farm planning and the transition toward a low-carbon agriculture sector. |
The effect of exogenous application of salicylic acid and ascorbic acid on forage quality and yield of maize (Zea mays L.) under water deficit conditionsOriginal PaperNavvab Haji Hassani Asl, Farhad Farah Vash, Mohsen Roshdi, Bahram Mir Shekari, Mehdi GaffariPlant Soil Environ., 2024, 70(3):142-153 | DOI: 10.17221/181/2023-PSE The effects of the foliar application of plant growth regulators (PGRs), salicylic acid (SA) and ascorbic acid (AA) were studied on yield and some qualitative traits of corn silage under drought stress in a field experiment conducted in the Agricultural and Natural Resources Research Center of Khoy in two consecutive years. The experiment was performed in four replications as a split plot in a randomised complete blocks design. Irrigation treatment was in two levels, ir75 and ir150, and the foliar applications of SA and AA at seven levels (100, 200, and 300 ppm, as well as a control treatment). The amount of water consumed in ir75 and ir150 during 10 and 7 times irrigation was 6 000 and 4 200 m3/ha, respectively. Malondialdehyde (MDA) content was increased over the plant growth period in both ir75 and ir150, but with the difference that its range was 3.72 to 12.9 nmol/g FW (fresh weight) under ir75 and 12.5–109.5 nmol/g FW under water shortage conditions. The results show that ir150 decreased plant height, forage yield, ear weight, and nitrogen uptake versus ir75. In plants treated with SA and AA, nitrogen uptake and chlorophyll content increases (45–33%) were observed compared to the control plants under ir75. In most traits, there was no significant difference between AA and SA levels, but plants treated with SA100 showed higher protein yield, dry forage yield, and ear yield. |
Optimised formulation and characterisation of oregano essential oil edible composite films by response surface methodologyOriginal PaperHekun Duan, Zitian Yuan, Suyan Liu, Liang Jin, Ping Wen, Yaqi Wang, Fuhao Hu, Fei HanCzech J. Food Sci., 2024, 42(1):31-44 | DOI: 10.17221/189/2023-CJFS
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Effect of three types of oils on intramuscular fat composition of fattened cockerelsOriginal PaperEva Straková, Lucie V¹etièková, Pavel SuchýCzech J. Anim. Sci., 2024, 69(3):102-109 | DOI: 10.17221/5/2024-CJAS The aim of the study was to assess the effect of selected vegetable oils on the representation of dietary fatty acids in the muscle of broiler cockerels. The experiment included three groups of one-day-old cockerels of ROSS 308 genotype, 15 individuals each. The feed mixture and drinking water were fed to the cockerels, ad libitum. In accordance with the technological instructions for the hybrid combination ROSS 308, BR1 was fed to chickens up to 9 days of age with the same nutrient and oil (soybean) composition for all three groups. From day 10 to day 28 of fattening the chicks were fed BR2 and from day 29 to day 35 BR3. The components and composition of the BR2 and BR3 feeds were identical; feed mixtures differed only in oil, soybean oil was added to Group 1 (SBO), rapeseed oil to Group 2 (RSO) and sunflower oil to Group 3 (SFO). Cockerels were fed until 35 days of age and then slaughtered. Breast and thigh muscles were collected from 10 individuals from each group to determine total fat in which individual fatty acid (FA) analysis was performed. Based on the obtained results, rapeseed oil can be clearly recommended for broiler chickens in feed mixtures, for the reasons that the cockerels from the RSO group showed the highest live weight (35 days of fattening), had the lowest feed conversion ratio, had an increased n-3 FAs content in the intramuscular fat (breast and thigh), and the narrowest n-3 : n-6 FAs ratio in the intramuscular fat (breast and thigh). |
Transitional, fused and/or supernumerary vertebrae in the lumbosacrocaudal region of the spine – A reality in many domestic mammalsOriginal PaperC Toader CovasaVet Med - Czech, 2024, 69(5):156-168 | DOI: 10.17221/102/2023-VETMED The aim of this study was to identify the presence of transitional lumbosacral and sacrocaudal vertebrae in domestic mammals, to realise a comparative analysis of the localisation and conformation of this abnormal condition. The research included the following species: cattle – 29 specimens, sheep – 32 specimens, horse – 31 specimens, pig – 26 specimens, rabbit – 33 specimens, dog – 89 specimens and cat – 57 specimens. The spine of the animals was analysed post-mortem or radiologically. The investigations revealed the presence of transitional vertebrae as follows: in cattle – 3 cases (8.7%), all being about the lumbarisation of the first sacral vertebra (S1); in sheep – 3 cases (9.37%), two lumbarisation cases of S1 and one caudalisation of S4 (the last sacral vertebra); in horses – 4 cases (12.9%), all about the sacralisation of Cd1 (first caudal vertebra); in pigs – 3 cases (11.53%), two lumbarisation cases of S1 and one sacralisation of Cd1; in rabbits – 3 cases (9.09%), a lumbar supernumerary vertebra (L8) and two cases of caudalisation of S4; in dogs – 4 cases (4.49%), a lumbar supernumerary vertebra (L8) and 3 cases of sacralisation of the last lumbar vertebra (L7 or L8); in cats – 3 cases (5.26%), two sacralisation cases of the last lumbar vertebra and one case of caudalisation of the last sacral vertebra (S3). A strong lumbarisation process was observed in ruminants (especially in cattle), then in pigs, the sacralisation being prevalent in carnivores. The sacrocaudal transitional vertebra was predominant in horses. No evident influence of the sex and age of the animals was observed. |
Use of the threshold segmentation method as an alternative for estimating the volume of forest industry residuesOriginal PaperCarlos Borrego-Núñez, Pablito Marcelo López-Serrano, Pedro Antonio Domínguez-Calleros, Jorge Luis Compeán-Aguirre, Artemio Carrillo-ParraJ. For. Sci., 2024, 70(3):135-143 | DOI: 10.17221/105/2023-JFS In recent decades, the interest in searching for procedures and strategies to make energetic and economic use of residues from different industries has been an important part of the political agenda. There are several methods to determine the volume of residues from the forestry industry, but they are too time-consuming to apply. The objective of the present study was to establish a simpler and more efficient method to quantify the volume of residues from the forest industry. Ten controlled piles were made with residues from a private sawmill in the city of Durango, Mexico. To calculate the volume, two manual methods and one automatic method were used to calculate the stacking coefficient of the piles, while the water immersion method was used to calculate the real volume. A completely random experimental design was used for the analysis, where an analysis of variance and mean comparisons were performed at a significance level of P ≤ 0.05. The results of the study show that the threshold segmentation method is faster, more practical and efficient than the other methods used. The estimation of the volume of these residues will contribute to generating sustainable alternatives for the development and use of forest industry resources. |
A frontier approach for the production of enteric soft capsules containing omega-3 fatty acids and probioticsOriginal PaperHayoung Kim, Won Yeong Bang, Boyoung Choi, Han Bin Lee, Jungwoo YangCzech J. Food Sci., 2024, 42(2):127-135 | DOI: 10.17221/181/2023-CJFS
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Comparative study on the large-scale intensive culture of pikeperch (Sander lucioperca) larvae: Evaluation of two different live exogenous food optionsOriginal PaperVáclav Kuèera, Tomá¹ Pìnka, Oleksandr Malinovskyi, Carlos Yanes-Roca, Zhaxygali B. Kuanchaleyev, Tomá¹ PolicarCzech J. Anim. Sci., 2024, 69(6):243-254 | DOI: 10.17221/42/2024-CJAS This study is focused on the comparison of production efficiency (growth, survival, and development) and economic evaluation of large-scale larvae culture in pikeperch (Sander lucioperca) using Artemia (Group A) compared to using rotifers and the subsequent combination of rotifers and Artemia (Group R) as a first exogenous feed following weaning and intensive culture of juveniles. Both experimental groups were stocked with the same initial density (100 pcs per litre) of larvae at 4 days post hatching (DPH). Each group was cultured in triplicate until 65 DPH. Assessed parameters included FBW (final body weight), FTL (final total length), SGR (specific growth rate), SR (survival rate), CR (cannibalism rate), SBI (swim bladder inflation rate), and TDR (total deformity rate). Production costs were confronted with total number of all produced and high-quality juveniles to determine the cost per one juvenile. Juveniles in Group A displayed more rapid growth (significantly higher FBW, FTL and SGR). On the other hand, parameters concerning quality of the fish (SBI, SR, Share of high quality juveniles and TDR) were significantly higher in Group R. Statistical difference in CR also benefits Group R. Production of bigger share of high-quality juveniles in Group R decreased overall production cost per one high-quality juvenile by 59.7%, from 0.72 EUR in Group A to 0.29 EUR in Group R. Use of established feeding protocols confirmed significant production and economic improvements in pikeperch larvae culture and production of high-quality juveniles. Even though the price of rotifer cultivation significantly exceeded the price of Artemia purchase and cultivation, the production cost of high-quality pikeperch juveniles significantly decreased. |
Non-surgical pain management for hip joint disease in veterinary medicineReviewJ Toholova, S Hornak, M KuricovaVet Med - Czech, 2024, 69(8):261-272 | DOI: 10.17221/19/2024-VETMED The most common orthopaedic developmental disease in dogs is hip dysplasia. This condition results in coxofemoral laxity due to incongruity and lack of stabilisation of the joint by the soft tissues. Currently, there is no therapeutic plan to correct hip dysplasia without surgical intervention at a very early age. The goal of the non-surgical treatment is to relieve pain and stiffness and to increase the muscle strength, usually through hydrotherapy and the beneficial physical properties of water. Recently, there has been growing interest in regenerative medicine, which involves the use of mesenchymal stem cells (MSCs) and their products to alleviate the characteristic clinical symptoms of osteoarthritis (OA). In vivo studies with canine MSCs have shown that an intra-articular injection of MSCs into cartilage lesions leads to the excellent regeneration of the hyaline cartilage. Regenerative medicine has undergone rapid development in recent years thanks to new therapies based on the application and combination of innovative biomaterials. One of the first known regenerative methods to be used in clinical practice was platelet-rich plasma (PRP). This review summarises the use and potential of MSCs and PRP, including their in vitro properties, their therapeutic effects in the treatment of cartilage lesions in preclinical in vivo studies, their clinical efficacy in the treatment of naturally occurring OA in dogs, and the current limitations of the studies. |
