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Over- and under-bark volume estimation of European larch timber produced by mechanised harvesting in CzechiaOriginal PaperMonika Löwe, Radim Löwe, Martin Jankovský, Pavel Natov, Jiøí DvoøákJ. For. Sci., 2024, 70(7):381-390 | DOI: 10.17221/28/2024-JFS In Czechia, harvesters contributed 43% of the total annual timber production in 2022. It is assumed that harvester technology will continue to be used intensively in the future, even though there is a change in the tree species composition of forests after the recent bark beetle outbreak and an increase in the use of close-to-nature forest management. The aim of this study was to analyse the over- and under-bark volume estimates of European larch timber produced by a harvester in Czechia. This study used the M3s price category for volume estimation. This volume was compared with the M3toDE price category. The M3toDE price category underestimated the over-bark volume by 5.59% compared to the M3s price category. However, for use in forestry practice in Czechia it is currently necessary to use the M3toDE price category. Therefore, the M3toDE price category was used to compare under-bark volumes according to different bark deduction methods. Differences were found between all the five methods investigated. Understanding this sub-issue will help in training operators, acquiring comprehensive knowledge about the functioning of harvester software and maximising the economic effect of the sale of larch timber. |
Roots of Lupinus angustifolius L. and enzyme activities in soil contaminated by toxic elementsOriginal PaperMilan Novák, Veronika Zemanová, Jindøich Èerný, Daniela PavlíkováPlant Soil Environ., 2024, 70(9):552-561 | DOI: 10.17221/194/2024-PSE The impact of toxic elements (TEs) contaminating the root zone of Lupinus angustifolius L. on enzymatic activities, nitrification rate, and changes in the root system was evaluated. Lupine was cultivated in a pot experiment using two types of soil – control and contamination (with a high degree of arsenic (As), cadmium (Cd), lead (Pb), and zinc (Zn) contamination). After harvesting lupine biomass, enzyme activities (β-glucosidase, acid phosphatase, arylsulphatase, lipase, chitinase, cellobiohydrolase, alanine aminopeptidase, and leucine aminopeptidase) in soils were analysed. Enzyme activities decreased with TE soil contamination. According to our results, arylsulphatase was found to be the most sensitive soil enzyme to TEs. The nitrification rate is closely related to soil contamination and plant activity, as it stimulates microbial growth and multiplication through root exudates. The close correlations confirmed this relationship (r = 0.73−0.99). An increasing trend in TE contents in the roots was observed with soil contamination. Plant hormones are crucial in regulating root growth and development under stress conditions. The levels of determined phytohormones in our experiment (auxins, abscisic acid (ABA), salicylic acid (SA), and bioactive cytokinins (bCKs)) were lower in the contamination compared to the control. Correlations confirmed a significant negative relationship between the TE content in the roots and the contents of phytohormones (auxins: r = –0.96 to –0.97; ABA: r = –0.83 to –0.86; SA: r = –0.95 to –0.99, bCKs: r = –0.87 to –0.93). The ratios of these hormones (not their absolute values) appear to be the determining factor for regulating root development and protecting plants from oxidative stress. |
How does urbanisation affect agricultural economic resilience? Evidence from ChinaOriginal PaperRuihan Wang, Zheng Lu, Chunyu TangAgric. Econ. - Czech, 2024, 70(10):513-526 | DOI: 10.17221/207/2024-AGRICECON As an important path to breaking the urban-rural dual system and promoting agricultural modernisation in China, the process of urbanisation might have a strong influence on promoting agricultural economic resilience (AER). Using panel data from provincial-level administrative regions of China’s mainland, we constructed a novel indicator system to measure AER, and employ the system generalised method of moments model to examine the impact of urbanisation on AER and the moderating roles of land transfer and heterogeneous human capital. Our study yielded three notable findings. First, the urbanisation process can significantly enhance AER. This finding remained robust after conducting multiple robustness tests and addressing endogeneity using the instrumental variable method. Second, the influencing mechanism analysis results indicated that land transfer and human capital had significant moderating roles, and the level of land transfer and educational improvement can enhance the positive impact of urbanisation on AER, while the migratory human capital weakened this positive effect. Third, the heterogeneity analysis revealed regional differences in the impact of urbanisation on AER, demonstrating that the promotional effect of urbanisation was much greater in the major grain-producing areas. Our study offers a new perspective and evidence for researchers and policymakers investigating how to enhance AER. |
Lessons learnt from the use of passive samplers to measure ammonia emissions in multi-plot experimentsOriginal PaperNils Carsten Thomas Ellersiek, Hans-Werner OlfsPlant Soil Environ., 2024, 70(12):760-771 | DOI: 10.17221/453/2024-PSE Chemical additives can reduce ammonia emissions from ammonium-containing fertilisers. We aimed to investigate the effect of an additive based on carboxylic acid derivatives on ammonia emissions from slurry. In a randomised multi-plot field trial, three slurry treatments with increasing amounts of the additive based on carboxylic acid derivates were tested in comparison to untreated slurry and mineral fertiliser. Ammonia emissions were measured with so-called passive samplers, a method already used in numerous studies. However, problems arose during the evaluation of the collected data, so we examined the methodology used in more detail. The results of the measurements were analysed with regard to their spatial distribution and temporal variation. The results show that the more additives were used, the less ammonia was emitted, up to an emission reduction of 48% at the highest additive application rate. However, the spatial distribution of ammonia emissions reveals a drift of ammonia and, thus, an interaction between the plots. Thus, even in unfertilised plots, ammonia emissions of up to 50% of the treatment with the highest emissions were determined. Furthermore, it was also proven that the different times at which the slurry was applied influenced the level of ammonia emissions. Due to the interaction between the plots and the temporal differences in the application of the slurry, measuring ammonia emissions with passive samplers in multi-plot field trials, as presented in this study, is not suitable to quantify differences between the ammonia emissions from different treatments. Based on these results, recommendations for the use of passive samplers to measure ammonia emissions in field trials are proposed. |
Robinia pseudoacacia poisoning in two horses: A case reportCase ReportT Novotna, E Samonilova, J Klan, L Frgelecova, A Mala, Z Svobodova, Z DrabkovaVet Med - Czech, 2024, 69(11):395-400 | DOI: 10.17221/55/2024-VETMED This case report describes the poisoning of two mares from the same paddock with Robinia pseudoacacia (Black locust) bark. The poisoning manifested itself by the sudden onset of weakness and fever with transient improvement after the administration of non-steroidal anti-inflammatory drugs and fluids. After the initial stabilisation, the mares were left unattended overnight. One of them was found dead in the morning. The surviving mare developed colic and severe encephalopathy and had to be referred to the clinic. Blood tests revealed severe hyperammonaemia. After four days of symptomatic treatment, she fully recovered. Robinia pseudoacacia with bark freshly bitten off was found in the paddock. The necropsy of the dead mare revealed oedema of the brain and lungs, pleural haemorrhages, and hyperaemia and haemorrhages of the glandular mucosa of the stomach. The intestinal content was watery, without macroscopic findings of the bark. Due to the peracute onset in both mares at the same time, hyperammonaemia and paralytic ileus in the surviving mare, and the presence of Robinia pseudoacacia in the paddock, poisoning with this tree was highly suspected. The diagnosis was confirmed by the microscopic findings of Robinia pseudoacacia bark tissue in the gastric content of the dead mare. |
Clonal and seasonal genetic variation of major oil components of Salvia fruticosa Mill.Original PaperFatma Uysal, Muharrem Golukcu, Murat Alan, Esra Alım, Kenan TurgutHort. Sci. (Prague), 2024, 51(4):297-304 | DOI: 10.17221/134/2023-HORTSCI Anatolian sage (Salvia fruticosa Mill.) is widely used in many food, cosmetics, and pharmaceutical sectors. This study aimed to determine the differences in essential oil components and seasonal changes in the components of six clonally selected C-clones and one natural population in a randomized block design with three replications. Samples were collected monthly from C-clones for two years, and essential oil rates were determined. Clonal heritability was between 0.00 and 0.78. When the best clone was selected from six clones, the genetic gain changed from 12.4 to 44.8 for the essential oil components. Assessment of all clones revealed that the time of monthly harvests significantly affected essential oil components. The clone and harvest time interaction caused significant differences in essential oil components, and clones reached the highest values in different months. The correlation analysis showed a significant negative association between camphor and “β-pinene and β-caryophyllene” and a positive association between camphor and essential oil. High variation in the components, the differences in harvest times, and high correlations between components indicated that clones developed by selection have a significant production potential. |
The impacts of agricultural subsidies of Common Agricultural Policy on agricultural emissions: The case of the European UnionOriginal PaperJeremiás Máté BaloghAgric. Econ. - Czech, 2023, 69(4):140-150 | DOI: 10.17221/51/2023-AGRICECON
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Sustainably produced butter: The effect of product knowledge, interest in sustainability, and consumer characteristics on purchase frequencyOriginal PaperDominika Jakubowska, Tomá¹ SadílekAgric. Econ. - Czech, 2023, 69(1):25-34 | DOI: 10.17221/294/2022-AGRICECON
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Determination of sorghum production energy input-output balance under farmers' practices in the Hararghe lowland areas of Ethiopia.Original PaperBirhanu Gurracho, Yetenayet Tola, Abebe Badie, Solomon Habtegabriel, Sirawdink ForsidoRes. Agr. Eng., 2023, 69(4):189-198 | DOI: 10.17221/11/2023-RAE
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Effect of glyphosate on the foraging activity of European honey bees (Apis mellifera L.)ReviewAneta Bok¹ová, Jan Kazda, Jan Barto¹ka, Martin KamlerPlant Soil Environ., 2023, 69(5):195-201 | DOI: 10.17221/86/2023-PSE Glyphosate is a widely used agrochemical. Nevertheless, only a few studies have investigated its effect on bees, specifically its influence on their foraging activity. This article provides a summary of the prominent research results on this issue, published in journals in the field of experimental biology. The effect of commonly used concentrations of glyphosate on honey bee navigation has been evaluated in several studies, as well as concentrations that are reportedly sublethal. Exposure to this herbicide increases the flight time back to the hive and affects the flight trajectories of these bees. These results imply that glyphosate at certain concentrations reduces their sensitivity to nectar rewards in associative memories. The contact of bees with non-lethal concentrations of glyphosate results in sublethal effects that affect foraging. In the future, the behaviour of glyphosate and its effect on bees in their natural environment need to be explored. |
In vitro evaluation of the composition and acaricidal efficacy of Urtica fissa leaf ethyl acetate extract against Sarcoptes scabiei mitesOriginal PaperF Liao, T Bao, G Tao, Y Hu, C HanVet Med - Czech, 2023, 68(5):200-207 | DOI: 10.17221/6/2023-VETMED In veterinary medicine, natural products provide an alternative to chemical agents for mite management. In the present study, the acaricidal efficacy of Urtica fissa leaf ethyl acetate extract against Sarcoptes scabiei mites was examined. The chemical composition of the extract was determined using liquid chromatography-mass spectrometry (LC-MS) analysis. The ethyl acetate extract was found to be extremely toxic to mites at a concentration of 100 mg/ml (m/v), killing all S. scabiei within two hours. The median lethal time (LT50) values for ethyl acetate extract concentrations of 25, 50, and 100 mg/ml against S. scabiei were 1.706, 1.204, and 0.750 h, respectively. The median lethal dosage (LC50) for S. scabiei was 19.14 mg/ml at two hours. The chemical composition of the ethyl acetate extract was evaluated using LC-MS, showing that the major components were schaftoside (8.259%), carnosol (6.736%), prostaglandin A2 (5.94%), 13(S)-HpOTrE (4.624%), nandrolone (4.264%), 1H-indole-3-carboxaldehyde (4.138%), 9-oxoODE (3.206%), and stearidonic acid (2.891%). In conclusion, these findings indicate that Urtica fissa contains promising new acaricidal compounds capable of successfully controlling animal mites. |
Light response curve analysis of juvenile black locust clones: A case study from eastern HungaryShort CommunicationTamás Ábri, Dániel Gaganetz, József CsajbókJ. For. Sci., 2024, 70(4):202-207 | DOI: 10.17221/120/2023-JFS
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Effects of different dietary inclusions of whole-plant corn silage on growth performance, nutrient availability and jejunal development in growing-finishing pigsOriginal PaperXiangyu Ma, Jing Sun, Jianpu Zhao, Xiaoxue Jv, Jiuyuan Dong, Weiren Yang, Yanping Jiang, Yang Li, Lijie Yang, Shuzhen JiangCzech J. Anim. Sci., 2024, 69(2):48-58 This study aimed to evaluate the effects of whole-plant corn silage (WCS) on growth performance, nutrient availability and intestinal development in growing-finishing pigs. A total of 32 barrows (33.1 ± 3.49 kg) were randomly allocated to four treatments. Control was the basal diet, and the low, medium, and high treatments were basal diets substituted with WCS (air-dry basis) at 5.0%, 7.5%, and 10.0% from day 1 to 42, and 10.0%, 12.5%, and 15.0% from day 43 to 98, respectively. The results showed that the average daily feed intake (ADFI), feed/gain (F/G), and crypt depth (CD) increased linearly (P < 0.05) with the increasing of WCS. However, the final body weight, average daily gain (ADG), biological value (BV), net protein utilization (NPU), dry matter, crude protein (CP), ether extract, crude fibre (CF), and gross energy decreased linearly (P < 0.05). High treatment significantly deteriorated BW, ADG, NPU, and BV compared to control, low, and medium treatments (P < 0.05). The low and medium treatments showed significantly greater ADFI, apparent digestibility (CP and CF), villus height (VH), VH/CD, relative mRNA and protein expression of occludin, claudin-1 and sodium-glucose cotransporter (SGLT1) than the high treatment (P < 0.05). The highest F/G, CD, relative mRNA and protein expression of cationic amino acid transporter (CAT1) were observed in high treatment (P < 0.05). Our results suggested that WCS can replace 7.5% and 12.5% of diet during growing and finishing periods of pigs, respectively. This is of great significance for reducing feeding costs and alleviating food security crises. |
Metabolite changes in cucumber xylem sap under rhizosphere aerationOriginal PaperHongbo Chen, Xu ZhaoHort. Sci. (Prague), 2024, 51(1):51-58 | DOI: 10.17221/156/2022-HORTSCI The impact of rhizosphere aeration on the composition of xylem sap in cucumber grown in soil was studied to determine its effects on (i) water and nutrient uptake, (ii) xylem transport, and (iii) amino acid synthesis in the roots. Plants grown under three different aeration conditions were subjected to progressive gas stress throughout the whole growth period. The shoot and root growth, xylem nitrate (NO3–) concentration, potassium (K+) concentration, xylem sap flow rate, and amino acid concentrations were higher in the Z1 treatment plants than in the control (CK) plants, and the former also showed a lower CO2 (0.25–0.84%) and a higher O2 (18.22–20.02%). However, the Z3 treatment plants exhibited decreased xylem loading of amino acids, NO3– concentrations, and K+ concentrations and a lower flow rate of xylem sap, which restricted shoot and root growth due to poor aeration caused by a higher CO2 (0.75–3.68%) and a lower O2 (11.51–18.6%). Furthermore, the xylem pH in these plants was lower by approximately 0.17 units, and the conductivity was decreased by approximately 0.31 mS/cm. Based on the observed results, the CO2 and O2 in the soil can potentially regulate root and shoot growth and the xylem sap composition in cucumber. Therefore, rhizosphere aeration is important for the vigorous growth of plants. |
Development of a layered double hydroxides-based air-assisted D-μSPE method in combination with HPLC for the determination of gallic acid in honeyOriginal PaperYumei Xiao, Yang Jiang, Tian Liu, Yuanyi Wu, Jialin He, Tian Liu, Yi YangCzech J. Food Sci., 2024, 42(2):100-108 | DOI: 10.17221/222/2023-CJFS
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Camera-guided inter-row hoeing in winter oilseed rape with different inter-inter-row spacingOriginal PaperRoland Gerhards, Marcus Saile, Michael SpaethPlant Soil Environ., 2024, 70(7):430-437 | DOI: 10.17221/485/2023-PSE New cropping practices such as single-grain seeding, lower seed densities with stronger cultivars, wide inter-row spacings and camera-guided side-shift control for weed hoeing facilitate mechanical weed control in oilseed rape. In a two-year field study in Southwestern Germany, camera-guided inter-row hoeing was compared to standard herbicide treatments and untreated control. Seeding with 12.5, 25 and 50 cm inter-row spacing was included as a second factor in the experiment. Weed and crop density were measured directly after treatment. Weed and crop biomass, oilseed rape root diameter and nitrogen uptake were assessed before winter. Seed yield was measured at harvest with a plot combine harvester. In 2021, hoeing in 50 cm inter-row spacing achieved equal weed control efficacy as the herbicide treatment (65–75%). In 2022, hoeing did not reduce weed density, probably due to heavy rainfalls during the first and second pass of hoeing. However, herbicide treatments controlled 92% of the weeds. In 2021, hoeing significantly increased oilseed rape shoot biomass and root diameter compared to the herbicide treatment and the untreated control. Hoeing in 50 cm inter-row spacing resulted in equal yield as the herbicide treatment. In 2022, weed control treatments and inter-row spacing had no effect on oilseed rape biomass, root diameter and yield. This study shows the potential and limitations of weed hoeing in oilseed rape. It also underlines the strong ability of modern oilseed rape cultivars to suppress annual broadleaved weeds. |
Comparison of two methods of measuring the urinary protein concentration for the determination of the urinary protein to creatinine ratio in various animal speciesOriginal PaperS Kovarikova, J Blahova, I Vanova, P MarsalekVet Med - Czech, 2024, 69(8):273-280 | DOI: 10.17221/30/2024-VETMED Determination of the urinary protein-to-creatinine ratio (UPC) is an important tool in the quantification of proteinuria in animals. However, the result may be affected by the different methods of determining the urinary protein concentration. The aim of this study was to compare the turbidimetric method using benzethonium chloride and the colorimetric method using pyrogallol red in the measurement of the urinary protein concentration in dogs, cats, guinea pigs and horses. A total of 464, 192, 216 and 119 urine samples from dogs, cats, guinea pigs and horses were examined in the study, respectively. The group consisted of animals of both sexes and different ages, and, in the dogs and cats, it included both healthy animals and those with various health problems. In the group of horses and guinea pigs, only clinically healthy animals were included. A total of 347, 185, 103 and 100 samples from the dogs, cats, guinea pigs and horses were used in the statistical analysis; the other values were excluded as they were below the detection limit. According to the Passing-Bablok analysis, there was a significant constant and proportional difference in the horses. In the dogs, cats and guinea pigs, there was a significant constant difference, but no proportional difference. The Bland-Altman method showed significant bias between the two methods in the horses and cats, but not in the dogs and guinea pigs. In the dogs and cats, the agreement between the two methods was tested and expressed as Cohen’s kappa (κ). In the cats, it was almost perfect for the proteinuric samples (κ = 0.823 3) and significant for the non-proteinuric samples (κ = 0.804 9). In the dogs, the agreement was significant for the non-proteinuric samples (κ = 0.621 5) and only moderate for the proteinuric samples (κ = 0.527 5). The influence of the method used to determine the urinary protein concentration should be taken into account when evaluating the UPC. Repeated examinations in one patient should be performed with the same method. |
Land productivity in the EU in the context of financial support through direct subsidiesOriginal PaperBarbara Kutkowska, Tomasz Szuk, Stanislaw Minta, Hanna AdamskaAgric. Econ. - Czech, 2024, 70(9):436-445 | DOI: 10.17221/51/2024-AGRICECON The main research objective of this study is to present the dynamics of land productivity changes in EU agriculture in the years 2012–2020 and evaluate the influence of direct subsidies received by farmers on land productivity. The source data for 2012–2020 are secondary and come from Eurostat. The research results were prepared for the entire European Union (EU-28), and divided into ‘old’ countries (EU-15) and ‘new’ countries (EU-13). The results were developed using the method of assessing convergence (in terms of differences in land productivity in individual countries) using the coefficient of variation and the relative index of changes in individual Member States in relation to the EU average over the period under study. Results showed that between 2012 and 2020, average land productivity in the EU increased by 7%. At the same time, differences in land productivity between EU countries decreased. The correlation analysis confirmed a statistically significant relationship between land productivity and the amount of direct payments per ha of agricultural land. Additionally, results of the correlation between productivity per 1 ha and the total area of agricultural land in EU countries confirmed the law of decreasing marginal productivity of land. |
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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Temperature regulates fatty acid desaturase and elongase at the transcriptional level and modulates the fatty acid profile in the early stage of the common carp (Cyprinus carpio)Original PaperHong-Tao Ren, Shi-Yang Gao, Yong Huang, Xiao-Chan GaoCzech J. Anim. Sci., 2023, 68(7):313-321 | DOI: 10.17221/22/2023-CJAS This study explored the regulatory effect of temperature stress on fatty acid biosynthesis in the early stage of common carp (Cyprinus carpio) based on Δ6-fatty acids desaturase (Δ6FAD) and elongase-5 (ELOVL5) gene expression and fatty acid composition. One-day-old carp larvae were selected, and after seven days of acclimatisation at 25 °C, the larvae were subjected to temperature stress for 96 h in water at 32 °C or 10 °C. In the post-larval stage, 30-day-old carp juveniles were selected and, after seven days of acclimatisation at 25 °C, were subjected to temperature stress for seven days in water at 32 °C or 10 °C. The results showed that common carp larvae could rapidly and highly express Δ6FAD and ELOVL5 genes within 48 h at high temperature (32 °C) compared with the 0 h group (P < 0.05), while gene expression began to gradually increase after 48 h at low temperature (10 °C). There was a significant improvement in C22:6n-3 and C20:5n-3 after 96 h at low temperature compared with the 0 h group (P < 0.05). In common carp juveniles, the Δ6FAD gene in the intestine, brain and liver was sensitive to low temperature, but the ELOVL5 gene in the intestine, brain and liver of common carp was sensitive to high temperature. The low temperature increased the amount of highly unsaturated fatty acids (HUFA) in the common carp juveniles. The results indicated that temperature could regulate the expression of the Δ6FAD and ELOVL5 genes for HUFA production, as well as for participation in the biosynthesis of fatty acids in the body during the early development of common carp. The results of this study help clarify the regulatory effects of temperature on fatty acid biosynthesis during the early development of common carp. |
Growth performance and yield of rice grown in three different types of soil collected from rice fields with coal fly ash applicationOriginal PaperBambang J. Priatmadi, Meldia Septiana, Akhmad R. SaidyPlant Soil Environ., 2023, 69(7):314-323 | DOI: 10.17221/245/2022-PSE The improvement of rice production to meet food needs for the increasing population is a general problem faced in wetland development for agriculture. The use of industrial waste, such as coal fly ash (CFA), could effectively improve the soil properties of wetlands. In this study, CFA with an amount of 2% (weight/volume) or 240 g was added to 12 L of three different soils collected from the rice fields (peatland, swampland, and rainfed field) in a 15-L pot, and then incubated in the greenhouse for 15 days. The soil pH, concentrations of NH4+-N, NO3–-N, exchangeable calcium (Ca) and magnesium (Mg) and available phosphorus in the soil were quantified following the completion of the incubation. Rice seedlings were planted in each pot, and after 90 days, the growth and yield variables were observed. The results showed that CFA application enhanced the concentrations of NH4+-N, NO3–-N, and available phosphorus in peatland and swampland, the rice fields that contain high organic carbon (C), which ultimately leads to increasing rice growth and yield. The application of CFA to rice fields containing low organic carbon did not improve available nitrogen and phosphorus nor enhance the growth and yield of rice. Results of this study indicate an important role of soil organic C content in the rice fields in controlling the effect of CFA on nutrient availability, growth and yield of rice. |
Provenance affects the growth and mortality of teak (Tectona grandis L.f.) plantations cultivated in central NicaraguaOriginal PaperJakub Èerný, Peter Haninec, Kateøina Novosadová, Zdenìk Patoèka, Pavel Haninec, Petr MadìraJ. For. Sci., 2023, 69(1):1-10 | DOI: 10.17221/115/2022-JFS
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Label-free proteomics to identify keratins and keratin-associated proteins and their effects on the fleece traits of Inner Mongolia Cashmere GoatsOriginal PaperChongyan Zhang, Yuchun Xie, Juntao Guo, Xin Su, Cun Zhao, Qing Qin, Dongliang Dai, Zhixin Wang, Jinquan Li, Zhihong LiuCzech J. Anim. Sci., 2023, 68(1):17-29 | DOI: 10.17221/93/2022-CJAS
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Continuous versus intermittent enteral nutrition in hospitalised dogs and cats using a new scoring system: A prospective clinical studyOriginal PaperA Rado-Blozonova, L Rauserova-Lexmaulova, L Cerna, M Pavlik, M Rado, M FusekVet Med - Czech, 2023, 68(6):246-252 | DOI: 10.17221/26/2023-VETMED Nutrition is an important part of the critical care. The goals of this prospective clinical study were to create a scoring system for the assessment of patient nutritional status and to compare continuous and intermittent bolus feeding of enteral nutrition (EN). A total of 38 patients (21 dogs and 17 cats) were divided into Group C (continuous feeding; 23 patients) and Group I (intermittent feeding; 15 patients). The following variables were recorded for each patient in both groups: gastrointestinal (GI) complications, changes in body weight (BW), body condition score (BCS), muscle condition score (MCS), veterinary nutritional status score (VetNSS), length of hospitalisation and outcome. The normality of the data was assessed using the Shapiro-Wilk test. Fisher’s exact test, Mann-Whitney, Wilcoxon signed-rank tests, and the t-test were used in statistical analyses. Significant changes were found in VetNSS and BW between the 1st and 5th day in Group C. The VetNSS seems to be useful for monitoring the nutritional status of hospitalised patients. Anorectic dogs and cats can be successfully supported with either continuous or intermittent feeding methods with a similar risk of GI complications and outcomes. |
A preliminary study on suitability of growing ginseng (Panax ginseng Meyer) in western Himalayan regionOriginal PaperSwati Walia, Pawan Kumar, Dinesh Kumar, Rakesh KumarPlant Soil Environ., 2023, 69(2):71-80 | DOI: 10.17221/288/2022-PSE Panax ginseng Meyer is one of Asia’s most popular medicinal plants, with triterpene saponins as principal bioactive compounds. The present study investigates the possibility of ginseng cultivation in Lahaul & Spiti, Himachal Pradesh, India in the Western Himalayas focusing on growth characteristics, and ginsenoside content in the roots. Plant growth parameters increased with an increase in the crop age and reached maximum maturity at the age of five years along with the production of a good amount of seeds and roots. Root fresh and dry weight of the five-year-old plant was 142.6 g and 45.5 g, respectively, which almost doubled as compared with the four-year-old plant. The HPLC analysis of P. ginseng roots leads to the identification of 14 compounds representing 31.81 ± 2.89 mg/g of total ginsenoside contents, where Rb1, Rg2 and Re were found to be major ginsenosides with 7.53 ± 0.37, 7.04 ± 0.61 and 3.77 ± 0.26 mg/g content. Protopanaxadiol (PPD) and protopanaxatriol (PPT) represent the major classes of ginsenosides present in the ginseng roots with a 0.98 ratio of PPD/PPT. Our studies revealed that the soil and climate of the Lahaul and Spiti district of Himachal Pradesh State in the Western Himalayas are suitable for the cultivation of P. ginseng with good content of ginsenosides in five-year-old roots. |
Selection of suitable reference genes in Paulownia fortunei (Seem.) Hemsl. under different tissues and abiotic stresses for qPCR normalizationOriginal PaperJiang Su, Kanghua Xian, Chuanming Fu, Jinxiang He, Baojun Liu, Ningzhen HuangCzech J. Genet. Plant Breed., 2023, 59(4):205-218 | DOI: 10.17221/72/2022-CJGPB By choosing appropriate candidate reference genes (CRGs) and standardizing qPCR data, more accurate experimental data can be obtained. Herein, the expression stability of alpha-tubulin1 (TUA1), beta-tubulin (TUB), beta-tubulin 1 (TUB1), beta-tubulin 5 (TUB5), actin 1 (ACT1), actin 97 (ACT97), molecular chaperone dnaj (DNAJ), adenine phosphoribosyl transferase (APT), and histone H4 (HIS4) genes from Paulownia fortunei (Seem.) Hemsl. under different experimental conditions (different tissues, drought, salinity, Cd, and Cr treatments) was assessed with four statistical tools: RefFinder, BestKeeper, NormFinder, and geNorm. Notably, TUA1 and TUB5 were identified as CRGs for different tissues, ACT97 and TUB1 for drought treatment, ACT97 and APT for salinity treatment, TUB1 and ACT97 for Cd treatment, and DNAJ, TUB1 and TUB5 for Cr treatment. Furthermore, the results of “total” group, V4/V5 > 0.15 and V5/V6 < 0.15 revealed that the CRGs or gene combinations, which could meet all the test conditions, were not easy to identify. To further verify the reliability of CRGs, the expression levels of paulownia fortunei cellulose synthase A catalytic subunit2 (PfCesA2) and paulownia fortunei glutathione reductase (GR) genes were analysed. The expression patterns were different when the unstable CRGs were used for normalization compared to when the stable CRGs and combination were used for normalization. This study will lay a foundation for study on the expression levels of key genes from P. fortunei seedlings. |
Modelling of alluvial soil quality and production in permanent banana Harton plantationsOriginal PaperNelino Florida Rofner, Cesar Augusto Gozme Sulca, Alex Rengifo RojasSoil & Water Res., 2023, 18(3):192-203 | DOI: 10.17221/22/2023-SWR Plantain is the most important crop for the Peruvian Amazonian population, developed in recent alluvial soils rich in nutrients, but fragile and susceptible to degradation. Therefore, the impact of permanent cultivation was evaluated, through modelling, on indicators of recent alluvial soil quality and production in plantations of Musa paradisiaca L. var. Harton, in the Aguaytia River valley, Peru. The treatments were areas with permanent plantain plantations of 2 (T0), 15 (T1), 4 (T2), and 5 (T3) years of management, evaluating soil physicochemical indicators and plantain production indicators. The results show significant differences for all yield and soil indicators evaluated, except for bulk density (Bd), clay fraction, soil organic matter (OM) and N. The modelling determined a significant positive impact on Bd and a significant negative impact on pH, P, pseudostem diameter and height, commercial fingers and bunch weight. In conclusion, the modelling shows trends of quality and yield reduction in 15 years of permanent management of plantain Var. Harton, and compromises the sustainability of the agroecosystem in the medium term. |
The occurrence and risk assessment of bisphenol A and its analogues – bisphenol B, F, S, Z and AF in the urine of lactating sowsOriginal PaperIvan Bahelka, Roman Stupka, Jaroslav Èítek, Michal ©pryslCzech J. Anim. Sci., 2023, 68(11):451-459 | DOI: 10.17221/90/2023-CJAS Bisphenols (BP) are pollutants that are globally and widely distributed and adversely affect the health of humans. However, knowledge of their presence in animals, especially farm animals such as pigs, remains limited. In this study, the incidence of bisphenol A (BPA) and its five analogues – bisphenol B (BPB), bisphenol F (BPF), bisphenol S (BPS), bisphenol Z (BPZ) and bisphenol AF (BPAF) – was monitored in lactating sows on an actual pig farm. The urine samples of 27 sows were collected twice on the 3rd day after parturition, and stored at –20 °C until analysis using MDGC/MS. None of the lactating sows produced bisphenol-free urine. In contrast, the urine of all sows contained at least two bisphenols (eight females), most often five (10 females) or all six bisphenols (five females). The average concentrations of bisphenols in urine were in the order of BPB > BPA and BPS > BPZ > BPAF > BPF. The most frequently detected bisphenol was BPB (96.0% of samples) followed by BPA (89.0%), BPAF (78.0%), BPS (63.0%), BPF (52.0%) and BPZ (37.0%). Additionally, the proportion of BPB in the total bisphenol concentration in urine samples was the highest (28.74 to 93.85%) while that of BPF was the lowest (2.33 to 16.70%). Estimated daily intakes of bisphenols as well as hazard quotients were much lower than risk thresholds established for the human population, indicating safe doses for the health status of lactating sows. However, these findings are limited as the mechanism of BPA analogue’ activity is still unclear, and the long-term effects of small doses of bisphenols and the potential harmful impact of BP mixtures are unknown. Knowledge of the occurrence of bisphenols in pig farming may contribute to the elimination of BPA and its analogues from this sector, which is crucial for the safety of animal products as well as the welfare of pigs. |
Optimising energy efficiency and ecological footprint of off-season cucumber production agro-ecosystem upon different farm levels (Case of central Iran)Original PaperBardia Bayat, Mohammad Hossein Ansari, Marjan Diyanat, Ali Mohammadi TorkashvandHort. Sci. (Prague), 2023, 50(3):219-232 | DOI: 10.17221/155/2022-HORTSCI The present study aimed to use a non-parametric data envelopment analysis (DEA) to estimate the energy efficiency and greenhouse gas (GHG) emissions in off-season cucumber-producing greenhouses in different farm level management systems in Iran. Data were collected using a questionnaire completed by 83 cucumber producers through face-to-face interviews. The results showed that the energy use rate was 75.1%, 82.6%, and 86.2% in small (0.5–0.9 ha), medium (0.9–2 ha), and large farms (≥ 2 ha), respectively. In all the farm levels, the greatest energy use shares belonged to electricity, chemical fertilisers, and human labour, respectively. The results of the DEA revealed that the technical, pure technical, and scale efficiencies of the large farms were 87.3%, 92.8%, and 97.1%, respectively, which were higher compared to other farm level management systems. The ratio of energy savings was estimated at 5.62% and 2.97% for small and large farms, respectively. The results also showed that electricity, chemical fertilisers, and diesel fuel were the most responsible for the GHG emissions. By optimising the energy use, pollution per one/ha one of off-season cucumbers can be mitigated by 1 614.5 and 1 315.0 kg of CO2/ha in small and large greenhouses; indicating more attention is required in managing the energy inputs in small-sized agro-ecosystems, especially for electricity. |
