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3D finite element analysis of tine cultivator and soil deformationOriginal PaperMuhammad Hashaam, Muhammad Waqar Akram, Moaz Ahmad, Muhammad Zuhaib Akram, Muhammad Faheem, Muhammad Maqsood, Muhammad AleemRes. Agr. Eng., 2023, 69(3):107-117 | DOI: 10.17221/58/2022-RAE
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Impact of economic globalisation on agriculture in developing countries: A reviewReviewAgus Dwi Nugroho, Zoltan LaknerAgric. Econ. - Czech, 2022, 68(5):180-188 | DOI: 10.17221/401/2021-AGRICECON Economic globalisation (EG) in developing countries has continued to increase over the last 40 years. EG has both beneficial and harmful impacts on all sectors, including agriculture. This paper aims to determine the impact of EG on agriculture in developing countries. This aim was met by conducting a systematic review (SR) of 64 papers from Scopus and Web of Science (WoS). EG has influenced various elements of agriculture in developing countries, including i) product, supply chain, food security, ii) trade, iii) economic, social, political element and environment and iv) technology and research and development (R&D). We propose several policies in this paper to maximise EG's positive impact while minimising its negative impact. |
Dynamics of occurrence of defective eggs in initial laying lines of hensOriginal PaperTomá¹ Kopec, Ladislav Máchal, Eva Tùmová, Zuzana Reèková, Radek FilipèíkCzech J. Anim. Sci., 2023, 68(8):356-363 | DOI: 10.17221/54/2023-CJAS The aim of this study was to monitor the occurrence of abnormal eggs in five initial laying lines of the domestic chicken (Gallus domesticus) between 2017 and 2021. The incidence of abnormal eggs, cracks, shell-less eggs, and double-yolk eggs were examined as part of the monitoring. Also assessed was the laying intensity, which ranged from 83.7% for the Barred Plymouth Rock (BPR) B line to 96.8% for the Rhode Island Red (RIR) A line. A statistically significant relationship between the line and control year was discovered for all varieties of abnormal eggs. The highest occurrence of cracks was in the RIR B line (2.2%). The BPR A line of hens had the highest concentration of shell-less eggs (1.7%), while the RIR A line, which also had the highest laying intensity (96.8%), had the highest frequency of double-yolk eggs (1.5%). A positive trend between the intensity and the occurrence of abnormal eggs was also confirmed. The BPR B (3.4%) and BPR C (3.0%) lines, which belonged to the lines with the lowest laying intensity, had the lowest percentage of abnormal eggs. For the BPR C line, cracks (1.2%), shell-less eggs (0.9%), and double-yolk eggs (0.9%) had the lowest occurrence rates. The correlation between laying intensity and double-yolk eggs reached 0.67, and a significant positive relationship was seen. On the other hand, no association was found between the laying intensity and the prevalence of cracked or shell-less eggs. There was also a strong correlation between abnormal eggs and double-yolk eggs (0.80) and between abnormal eggs and cracks (0.73). The correlation between the total occurrence of abnormal eggs and the intensity of laying reaches a mean value of 0.41. An increase in the intensity of laying from 80% to almost 100% leads to an increase in the occurrence of abnormal eggs from 2.6% to 6.3%. |
The effects of slope and altitude on soil organic carbon and clay content in different land-uses: A case study in the Czech RepublicOriginal PaperShahin Nozari, Lubo¹ BorùvkaSoil & Water Res., 2023, 18(3):204-218 | DOI: 10.17221/105/2022-SWR Soil organic carbon (SOC) and clay, as indicators of soil fertility, are mainly used to determine the ability of soil to retain water and store the nutrients that are necessary for plant growth. However, the distribution of SOC and clay is influenced by topography and land-use. In the present study, the relationships between SOC, clay, altitude, and slope in the topsoil of two different districts in the Czech Republic including the Liberec (71 samples) and Doma¾lice (67 samples) districts were investigated. To analyse the relationships between slope and SOC, linear regression was used. Results showed that SOC content increased when slope, clay, or altitude increased; however, there were no significant correlations between SOC and clay in both districts. Clay increased with decreasing slope, but clay and altitude were not correlated well in both areas. Then, study areas were divided into three land-use types including arable land, forest, and complex system of agriculture, parcels, and forests. Consequently, the correlations between SOC and slope and clay and slope were generally improved, indicating the importance of land-use on SOC and clay content. Additionally, using multiple regression with several topographic factors can provide a better prediction of SOC and clay content in each land-use for both districts, indicating the complex effects of topography on SOC and clay. |
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Evaluation of five rootstocks on the growth, gas exchanges and chlorophyll fluorescence of Juglans regia L. cv. ‘Xiangling’Original PaperBing Hua Liu, Liang Cheng, Ji Xia Zhang, Lian Jia Yui, Hai Lin Ma, Fangchun LiuHort. Sci. (Prague), 2023, 50(3):208-218 | DOI: 10.17221/152/2022-HORTSCI Our study comparative analyzed the morphological and physiological performance of Juglans regia L. cv. ‘Xiangling’ (JRX) grafted onto five rootstock species originated from China. A wide range of coefficient of variation (CV), 1.155–39.848%, was detected for fourteen indexes among the studied seedlings. CV of plant height, total dry biomass, total leaf area, root/shoot ratio, chlorophyll index, and stomatal conductance was higher than 15.00%, suggesting higher variation. Principal component analysis, hierarchical cluster analysis and subordinate function analysis were used to screen engrafted seedlings for their quality. All three methods produced the same result that seedling quality of ‘Xiangling’ engrafted with the five rootstock species from high to low were – Juglans regia L. cv. ‘Jizhaomian’ (JRJ), JRX, Juglans regia L. cv. ‘Lvxiang’ (JRL), Juglans mandshurica, Maxim., and Juglans hopeiensis Hu.. The evaluation results were highly consistent with the actual growth performance of the engrafted seedlings, it verified the reliability of our results and the evaluation methods. The results demonstrated that JRJ, JRX, and JRL are potential rootstock candidates in the studied walnut planting regions. It would provide important implication for the selection of proper rootstock species for a certain particular walnut variety. |
Genetic diversity and maternal origin of Vietnamese indigenous chicken breeds inferred from complete sequences of mitochondrial DNA D-loop regionOriginal PaperThi Thanh Nhan Giang, Van Ba Nguyen, Thi Quynh Chau Nguyen, Khanh Van Nguyen, Lan Doan PhamCzech J. Anim. Sci., 2023, 68(10):423-432 | DOI: 10.17221/226/2022-CJAS Indigenous chickens play a significant role in food security, income growth and socio-cultural life of rural households in Vietnam. This study was conducted to assess the genetic diversity as well as the phylogenetic relationships of Vietnamese indigenous chickens (Gallus gallus) to support the conservation of their genetic resources for sustainable rural farming. In this study, the genetic diversity and the phylogenetic relationships of 10 Vietnamese indigenous chicken breeds were analyzed using complete sequences of mitochondrial DNA (mtDNA) displacement-loop (D-loop) region. The average nucleotide and haplotype diversities of Vietnamese chickens were 0.006 3 ± 0.000 22 and 0.918 ± 0.010, respectively. A total of 39 polymorphic sites and 29 haplotypes were identified. The maximum likelihood tree classified these haplotypes into seven haplogroups (A, B, C, D, E, G and V), with haplogroups A and B being the two predominant maternal lineages of Vietnamese indigenous chickens, while haplogroups C, D, E, G and V were found in the remaining chickens. Several haplotypes from different haplogroups were shared among some chicken breeds. These results suggested that Vietnamese indigenous chicken breeds have multiple maternal origins, mainly from Chinese, Southeast Asian and Indian chickens, and that these breeds share common maternal lineages. The high level of genetic diversity in Vietnamese chickens demonstrates significance of conservation for future use. |
Estimation of Fagus orientalis Lipsky height using nonlinear models in Hyrcanian forests, IranOriginal PaperMohammad Rasoul Nazari Sendi, Iraj Hassanzad Navroodi, Aman Mohammad KaltehJ. For. Sci., 2023, 69(10):415-426 | DOI: 10.17221/93/2022-JFS Tree height is one of the most important variables in describing forest stand structure. However, due to difficulty in height measurement, especially in dense and mountainous forests, the common approach is to invoke the height-diameter (H-D) models. The oriental beech (Fagus orientalis Lipsky) is one of the most important species of Hyrcanian forests, over the mid to high-altitudes (400–1 800 m a.s.l.), in northern Iran. In this study, the H-D relationship of beech trees was investigated separately for mid-altitude and high-altitude in Shafaroud forests of Guilan using 14 nonlinear H-D models and an artificial neural network model (ANN). To collect data, a systematic random sampling method within a 100 × 100 m regular randomized grid was applied. In total, 3 243 individual trees in 255 circular plots with 0.1 ha were measured. For comparing the results, performance criteria including root mean square error (RMSE), R2adj, Akaike's information criterion (AIC), and mean absolute error (MAE) were used. In high and mid altitudes, Meyer (1940) and Bates and Watts (1980) models had the best performance, while Watts (1983) model and Burkhart-Strub (1974) model had the worst performance in high-altitude and in mid-altitude, respectively. On the other hand, the ANN model had the best accuracy and performance in both sites. Since the performance of the ANN model is superior and consistent compared to the common nonlinear models, here it is preferred for both regions. |
Utilisation of chicken eggshell nanopowder on physicochemical quality, microstructure, and amino acid profile of beef pattiesOriginal PaperHerly Evanuarini, Agus Susilo, Uun Yanuhar, Adelya Desi KurniawatiCzech J. Food Sci., 2023, 41(6):428-435 | DOI: 10.17221/156/2023-CJFS Chicken eggshells are a source of calcium and protein that can be added to restructured meat products, including patties. This study aimed to improve the chemical quality of beef patties with the addition of chicken eggshell nanopowder, including pH, protein content, ash content, fat content, antioxidant activity, calcium, microstructural quality, and identification of amino acid profiles. The method used in this study was a laboratory experiment arranged in a completely randomised design with five treatments: without the addition of chicken eggshell nanopowder as a control, the addition of chicken eggshell nanopowder 0.1, 0.3, 0.5, and 0.7% (w/w) with five replications. Data were analysed using the analysis of variance. It was followed by Duncan's multi-range test when the differences were significant or very significant. The research results show that the addition of chicken eggshell nanopowder to beef patties had a very significant effect (P < 0.01%) on pH, protein content, ash content, fat content, antioxidant activity, calcium, microstructural quality through scanning electron microscopy, and several amino acids. The addition of 0.7% chicken eggshell nanopowder could improve the chemical quality of the beef patties. The patty matrix was uniform and compact, and the air voids were getting tighter with the addition of chicken eggshell nanopowder, which was increasing based on scanning electron microscopy observations. Moreover, beef patties had various types of amino acids to achieve the best treatment. |
Effects of dried Portulaca oleracea supplementation to the laying hen diet on productive performance, egg physical traits, fatty acid composition, and cholesterol contentOriginal PaperAntonella Dalle Zotte, Gianluca PranzoCzech J. Anim. Sci., 2022, 67(3):114-123 | DOI: 10.17221/9/2022-CJAS Portulaca oleracea is a widespread herbaceous plant particularly rich in polyunsaturated fatty acids (PUFA), antioxidant compounds and characterised by a healthy omega-6/omega-3 ratio. The focus of this research was to evaluate the effects of Portulaca oleracea supplementation to the diet of laying hens on productive performance, egg physical traits, fatty acid composition and cholesterol content. Twenty-six 24-week-old Warren strain layers were randomly assigned to two different groups of 18 and eight birds, respectively: one group received a commercial diet (C) whereas the other group was given the same control diet supplemented with 20% of dried Portulaca oleracea (PO). Hens were fed for 21 days. Feed and water were provided ad libitum. The poor palatability of the PO diet compromised the optimisation of the productive performance, with a significant reduction of the oviposition efficiency (0.69 vs 0.88 for PO and C, respectively; P < 0.05) and egg physical traits. Considering the egg nutritional traits, dietary PO significantly decreased the yolk proportion of saturated fatty acid (43.0% vs 44.1%, P < 0.05), while it increased the content of PUFA (19.4% vs 17.8%, P < 0.001), and within the latter, both omega-6 and omega-3 proportion significantly increased in comparison with C group (16.4% vs 17.6%, P < 0.001 and 1.46% vs 1.80%, P < 0.001, for n-6 and n-3, respectively). This resulted in an improvement of the omega-6/omega-3 ratio (10.4 vs 11.3 for PO and C, respectively; P < 0.05). Egg yolk cholesterol content did not vary between dietary treatments. It could be concluded that the use of Portulaca oleracea for producing omega-3-enriched eggs is feasible once the problem of palatability has been overcome and the energy requirements of the hens have been covered. |
Jasmonic acid biosynthetic inhibitor ibuprofen inhibits the accumulation of ascorbic acid in strawberry fruit induced by lanthanum nitrateOriginal PaperHaifang Dai, Damiao Yuan, Changjuan ShanPlant Soil Environ., 2023, 69(3):95-104 | DOI: 10.17221/384/2022-PSE By using jasmonic acid (JA) biosynthetic inhibitor ibuprofen (IBU), we investigated the roles of JA in the process of lanthanum nitrate (La(NO3)3)-regulated ascorbic acid (AsA) content and metabolic enzymes responsible for AsA metabolism in strawberry fruit. Findings demonstrated that La(NO3)3 markedly improved AsA content by enhancing the activities and transcript levels of glutathione reductase (GR), dehydroascorbate reductase (DHAR), monodehydroascorbate reductase (MDHAR) and L-galactono-1,4-lactone dehydrogenase (GalLDH), and inhibiting the activities and transcript levels of ascorbate peroxidase (APX) and ascorbic acid oxidase (AAO). In comparison with La(NO3)3 alone, all the concentrations of IBU plus La(NO3)3 markedly inhibited the activities and transcript levels of DHAR, MDHAR, GalLDH and AAO, and improved the activities and transcript levels of GR and APX, which further reduced AsA content. Besides, La(NO3)3 increased JA content and IBU decreased JA content induced by La(NO3)3. Meanwhile, the results of Pearson correlation analysis showed that JA content had significant correlations with the activities and transcript levels of DHAR, MDHAR and GalLDH. Above findings implied that La(NO3)3 induced JA production, which further increased AsA content in fruits by mainly up-regulating the activities and transcript levels of DHAR, MDHAR and GalLDH. |
Sustainable innovation in agriculture: Building competitiveness and business sustainabilityOriginal PaperPavla Vrabcová, Hana UrbancováAgric. Econ. - Czech, 2023, 69(1):1-12 | DOI: 10.17221/321/2022-AGRICECON
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Methods for monetary valuation of ecosystem services: A scoping reviewReviewEgor Selivanov, Petra HlaváèkováJ. For. Sci., 2021, 67(11):499-511 | DOI: 10.17221/96/2021-JFS Adequate assessment of ecosystem services is important for the development of policies and management plans related to forestry activities and the environment. Carefully identified ecosystem values can determine which options policy makers should prioritize to provide the greatest benefit. There are numerous methods used by researchers to evaluate ecosystem services. The most widely applied methods are monetary valuation methods, they are often deemed to be the most pragmatic language when it comes to communication with political and business institutions. The main goal of this review is to analyse available literature using the methodology particular to the scoping review approach in order to identify and describe valuation methods that can be applied for monetary assessment of ecosystem services. As a result of the scoping review, over 20 monetary valuation techniques (including several less common methods such as willingness to sell and Delphi method) were derived from 16 literature sources. In the process of compiling the range of different methods, a few flaws and gaps in the communication of methods were observed such as lack of consistency in the names of different methods and mixing up concepts. In addition, a few areas for future research are suggested. |
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The factors limiting the venison market in the Czech Republic and options for limiting their impact on the ForestryOriginal PaperMartin Nìmec, Andrea Skøivánková, David Vaca, Jan Novák, Marcel Riedl, Roman Dudík, Vilém JarskýJ. For. Sci., 2023, 69(3):101-113 | DOI: 10.17221/142/2022-JFS
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Mercury distribution in the great cormorant (Phalacrocorax carbo) from the Krogulna ponds and Nysa K³odzka River (Poland)Original PaperK Novotna Kruzikova, Z Siroka, T Kral, P Hliwa, P Gomulka, A Spodniewska, Z SvobodovaVet Med - Czech, 2023, 68(4):164-174 | DOI: 10.17221/16/2023-VETMED
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Influence of primary tillage on the displacement of soil particlesOriginal PaperPavel Bro¾, Josef HùlaRes. Agr. Eng., 2023, 69(2):101-106 | DOI: 10.17221/76/2022-RAE
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Incidence of aflatoxin M1 in cows’ milk in Pakistan, effects on milk quality and evaluation of therapeutic management in dairy animalsOriginal PaperI Ullah, A Nasir, M Kashif, A Sikandar, M Sajid, M Adil, A Rehman, MU Iqbal, H UllahVet Med - Czech, 2023, 68(6):238-245 | DOI: 10.17221/18/2023-VETMED The present study was aimed at measuring the concentration of aflatoxin M1 (AFM1) in the milk of Holstein Friesian cows, its effect on the milk quality and seasonal trends, as well as to investigate the efficacy of a commercial clay-based toxin binder. For this purpose, milk samples from dairy cows (n = 72) were collected and assayed for AFM1 before employing a clay-based toxin binder. The milk samples (n = 72) were collected from selected animals, revealing that 69.4% of the milk samples had AFM1 levels above the United States permissible limit (0.5 µg/kg). The incidence of AFM1 in milk during the winter and summer was 82.5% and 53.1%, respectively. Owing to the presence of AFM1, the level of milk fat, solids-not-fat, and protein were found to be low. Subsequently, the affected animals were divided into two groups, i.e., AFM1 positive control (n = 10) and the experimental group (n = 40). The experimental group of animals were fed the clay-based toxin binder at 25 g/animal/day. A progressive decrease of 19.8% in the AFM1 levels was observed on day 4 and on day 7 (53.6%) in the treatment group. Furthermore, the fat, solids-non-fat and protein increased significantly in the milk. In conclusion, a high level of AFM1 contamination occurs in the milk in Pakistan, affecting the quality of the milk production. Clay-based toxin binders may be used to ensure the milk quality and to protect the animal and consumer health. |
The use of modern fermentation techniques in the production of traditional wheat breadOriginal PaperPavel Skøivan, Marcela Sluková, Ivan ©vec, Helena Èí¾ková, Iveta Horsáková, Eli¹ka RezkováCzech J. Food Sci., 2023, 41(3):173-181 | DOI: 10.17221/39/2023-CJFS A traditional Czech bakery white bread product is commonly made with directly mixed dough with the addition of yeast. In order to be able to reduce the salt content of the final product without compromising its acceptability to consumers, the dough was prepared with the addition of pre-ferments and wheat sourdoughs. The aim was to deepen the flavour background of the product and thus have a positive effect on its sensory properties. Wheat sourdoughs were prepared and tested using starter cultures and matured under different conditions. The resulting products were tested both sensorially and by means of precise physical methods. |
Indications for the removal of implants after fracture healing: A comparison between human and veterinary medicineReviewM Candela Andrade, I De Rus Aznar, M Brunnberg, P SlunskyVet Med - Czech, 2023, 68(7):259-270 | DOI: 10.17221/52/2023-VETMED Indications for implant removal after fracture healing are still under debate in both human and veterinary medicine. Although hardware removal is a common procedure, it should not be undertaken lightly. Intra and post-operative complications are common and a thorough evaluation of the risks and benefits should be performed. This review aimed to collect and summarise published data on the indications for implant removal in small animals, compare the collected data with human and equine medicine, and investigate the existence of guidelines for this purpose. There is no international consensual agreement for implant removal after fracture healing, neither in small animals nor in human orthopaedics. Decision-making processes are still controversial in some scenarios, thus clear evidence-based protocols for implant removal are needed. |
Investigate the mystery of Baijiu production region – Environmental factors for Luzhou (Sichuan, China)ReviewGuo Qingyan, Tang Yurun, Zhao Fan, Liu Ying, Tian Lei, He Zongjun, Guan TongweiCzech J. Food Sci., 2023, 41(5):323-339 | DOI: 10.17221/72/2023-CJFS
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Mechanization’s impact on agricultural total factor productivityOriginal PaperYuxin CuiAgric. Econ. - Czech, 2023, 69(11):446-457 | DOI: 10.17221/291/2023-AGRICECON Agricultural mechanisation is rapidly increasing in China and will have an increasing impact on agricultural total factor productivity (TFP) in the future. This study uses panel data from 27 provinces in China, spanning the years 2001‒2020, to measure agricultural TFP, and estimates the effects of mechanisation on TFP, technical efficiency, and technological progress. The results reveal that the level of agricultural mechanisation can promote TFP. TFP has a cumulative effect in the previous period, which can also significantly affect TFP in the current period. The level of agricultural mechanisation improves technical efficiency and promotes technological progress, but this is not statistically significant. Regional heterogeneity exists in mechanisation’s effect on agricultural TFP, with the largest effect occurring in the group with the lowest TFP. Therefore, efforts to promote the use of agricultural machinery should increase. China’s agricultural machinery subsidy policy must be further adjusted, and agricultural machinery research investments increased, while the government must address the heterogeneity between regions and focus on developing agricultural mechanisation in the central and western regions. |
Insecticidal activity of essential oil from Jasminum sambac (L.) Aiton against Callosobruchus maculatus (Fabricius, 1775) (Coleoptera: Bruchidae)Original PaperRuchuon Wanna, Phirayot Khaengkhan, Darika Bunphan, Benjapon Kunlanit, Parinda Khaengkhan, Hakan BozdoğanPlant Protect. Sci., 2023, 59(4):369-378 | DOI: 10.17221/69/2023-PPS Mungbean seeds [Vigna radiata (L.)] are easily damaged by insects during storage, and essential oils (EOs) have proved effective for controlling insect infestation. This research study assessed the bioactivity of EO from Jasminum sambac (L.) Aiton against Callosobruchus maculatus (F.). The chemical composition of EO was analysed by a gas chromatograph-mass spectrometer (GC-MS). All experiments were conducted following a completely randomised design (CRD) with four replications of the residual contact and seed dressing bioassays. Results indicated that J. sambac EO contained 35 compounds (97.587%), with the main component 3-hexen-1-ol benzoate. Residual contact toxicity LC50 values of this EO on adult C. maculatus at 24, 48, and 72 h were 5.01, 4.00, and 3.13 µL/mL, respectively. J. sambac EO at 8 µL/L showed the highest residual contact efficacy against C. maculatus, killing up to 100% in 72 hours. The highest concentration of J. sambac EO (1 mL/kg) gave optimal protection against C. maculatus within 4 and 5 days with 100% mortality. This concentration showed 100% inhibition of adult F1 progeny emergence, with no seed damage and weight loss of V. radiata L. after 30 days of exposure, and not significantly different from 0.8 mL/kg. Results indicated that J. sambac EO effectively prevented C. maculatus infestation and it could be used as an alternative to commercial chemical insecticides. |
Price transmission between maize and poultry product markets in the Visegrád Group countries: What is more nonlinear, egg or chicken?Original PaperSergei Kharin, Zuzana Kapustova, Ivan LichnerAgric. Econ. - Czech, 2023, 69(12):510-522 | DOI: 10.17221/320/2023-AGRICECON
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Nutritional evaluation of the full-day dietOriginal PaperBarbora Pohoøelá, Andrea Poláchová, Markéta Rù¾ièková, Marek Dole¾al, Jana Pulkrabová, Jan PánekCzech J. Food Sci., 2022, 40(2):118-129 | DOI: 10.17221/273/2021-CJFS Nutrition plays an important role in human life. So far, there have been discussions focusing on the nutritional value of individual foods, separate dishes, or daily meals. However, they have not taken into account the composition of the diet in the longer term. The aim of this work was to evaluate a full-day diet from a currently renowned company that is producing box diets on the Czech market against a full-day diet of twenty randomly selected students. The results showed that the box diet met the required amount of protein, fat, vitamin E, cholesterol, and also the optimal intake of n-6 and n-3 fatty acids. The amount of saturated fatty acids (SFA) was only slightly increased. Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) content averaged 38 mg day-1, which did not meet the current requirements. The students' full-day diet was variable, the individual differences were large. Protein intake could be assessed as sufficient in most cases. The total fat intake ranged from 21 g day-1 to 126 g day-1. Seven out of twenty samples would satisfy the recommendation for SFA. The content of the essential acids EPA and DHA was below the detection limit with the exception of one sample (containing herring fillets). |
Palliative care for cancer patients in veterinary medicineReviewCSF Repetti, JR Rueda, CD Porto, R Prevedello Franco, RJS Girio, FFR Manhoso, IB CostaVet Med - Czech, 2023, 68(1):2-10 | DOI: 10.17221/76/2022-VETMED
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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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Agricultural commodity markets and the Turn of the month effectOriginal PaperPeter Árendá¹, Jana KotlebováAgric. Econ. - Czech, 2023, 69(3):101-108 | DOI: 10.17221/17/2023-AGRICECON
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Incidence of thermophilic, grass and rare arable weeds in cereal fields in the Czech and Slovak RepublicOriginal PaperMichaela Koláøová, Ludìk Ty¹er, Theresa A. Reinhardt Piskáèková, Jana MájekováPlant Soil Environ., 2023, 69(3):131-140 | DOI: 10.17221/439/2022-PSE Our objectives were to characterise arable weeds of the Czech and Slovak Republic in cereals, especially considering important groups of species: thermophilic, weedy grasses, and rare and endangered species. The three-year phytocoenological survey was conducted from 2006 to 2008 in five climatic regions and eight different soil types. 379 relevés were recorded, and 281 weed species were found. The effects of both the climatic region and soil type were found to be statistically significant. Species richness increased with altitude. Several species were distinctly associated with soil type, from fertile chernozems to less fertile cambisols, while fluvisols were strongly associated with e.g. Calystegia sepium (L.) R. Br. The incidence of species outside their expected regions generally fit two categories: the most pervasive weeds found almost in all climate regions, such as Echinochloa crus-galli (L.) P. Beauv., or rare weeds in higher altitudes than expected, such as Lolium temulentum L. Rare and endangered species were more likely to be found in a colder climate and poorer soils, and this is linked to less intensive management; however, not all endangered arable species can tolerate such conditions. Even though this data is not recently collected, this is still valuable information on the distribution of weedy species, especially concerning the current interest in maintaining biodiversity. |
Flight activity of aphids in Serbia: investigation by water traps placed in sugar beet fieldsOriginal PaperOlivera Petroviæ-Obradoviæ, ®ivko Æurèiæ, ®eljko Milovac, Andja RadonjiæPlant Protect. Sci., 2023, 59(2):185-192 | DOI: 10.17221/130/2022-PPS
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