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Effect of a 24-hour praziquantel bath on the haematological and biochemical profile and selected parameters of oxidative stress in grass carp (Ctenopharyngodon idella)Original Paper

R Dobsikova, P Marsalek, J Velisek, J Blahova

Vet Med - Czech, 2026, 71(4):147-155 | DOI: 10.17221/89/2025-VETMED

This study assessed the effect of a 24-hour bath with praziquantel (2 and 4 mg/l) on grass carp (Ctenopharyngodon idella) by monitoring the haematological parameters, plasma biochemical profile, and oxidative stress indices. Fish were sampled at 24-, 48-, 72-, and 96-hours post-exposure (hpe). The haematological analysis revealed a significant increase (P < 0.05) in the white blood cell count immediately after treatment at both concentrations, with no subsequent changes. Within the plasma biochemical profile, a significant decrease (P < 0.05) was observed only in chloride (24 hpe at 2 mg/l; 72 hpe at both concentrations) and in magnesium (48 hpe at 2 mg/l). The oxidative stress responses indicated that the gill was the most responsive tissue. In the gill, the catalase and glutathione-S-transferase activities increased significantly (P < 0.05) at 48 hpe at 4 mg/l. Lipid peroxidation in the gill decreased at 48 hpe but increased at 72 hpe following exposure to 4 mg/l. In the hepatopancreas, the glutathione peroxidase activity significantly decreased at 48 hpe at 2 mg/l. In the plasma, significant changes (P < 0.05) were detected only in the ceruloplasmin activity, which decreased at 72 hpe in the 2 mg/l group. These findings provide essential baseline data supporting the potential future application of praziquantel in aquaculture.

Effect of the pumpkin seed flour and pumpkin seed oil cake flour addition on quality of wheat breadOriginal Paper

Natasa Lakic-Karaliæ, Ladislav Vasili¹in, Stani¹a Latinoviæ, Goran Vuèiæ, Slavica Grujiæ, Bo¾ana Od¾akoviæ, Anastasija Tegeltija, Ivana Èoliæ

Czech J. Food Sci., 2026, 44(1):35-44 | DOI: 10.17221/190/2024-CJFS

Pumpkin seeds and their oil cake are often treated as by-products, but their composition and high nutritive and biological value makes them a promising material for nutritional enrichment of bakery products. The purpose of this study was to characterise pumpkin seed flour (PSF) and pumpkin seed oil cake flour (PSOCF), and evaluate the effects of their addition on the chemical composition including the fatty acid composition, textural parameters, sensorial characteristics and antioxidant activity of the wheat bread. Six experimental bread samples with 5, 10 and 15% of PSF or PSOCF added to wheat basic formulation, and a control wheat sample, were produced. Results indicated that addition of PSF and PSOCF led to higher ash, cellulose, protein, fat, total carotene and unsaturated fats content, which means that the experimental bread samples had a higher nutritional value. PSF addition had more positive effect on the textural characteristics and antioxidant activity of bread, than PSOCF addition. All bread samples (evaluated by 5-point scale multiplied with the coefficient of importance) had very high sensory quality (89.88–96.59% of maximal possible quality). The results confirmed that PSF and PSOCF are suitable for use in food industry for nutritional enrichment of wheat bread and related products.

Influence of daily feed ration on growth and condition of juvenile pikeperch (Sander lucioperca) reared in a recirculating aquaculture system (RAS)Original Paper

Tomá¹ Pìnka, Oleksandr Malinovskyi, Jitka Koláøová, Václav Kuèera, Tomá¹ Policar

Czech J. Anim. Sci., 2024, 69(6):230-242 | DOI: 10.17221/33/2024-CJAS


The study tested the effect of daily feed ration (DFR: 0.5%, 0.75%, 1.0%, 1.25%, and 1.5% of fish biomass) on juvenile pikeperch (Sander lucioperca) with an initial body weight of 21.5 ± 5.1 g and total length of 144.5 ± 8.5 mm. The pikeperch were fed floating feed at 8-hour intervals for a duration of 84 days. By the end of the experiment, the group fed DFR of 1.5% exhibited the highest body weight (51.5 ± 16.1 g) and total length (188.2 ± 17.8 mm). The weight heterogeneity, measured as the coefficient of variation (CV), ranged between 30.29 and 33.24%. The specific heterogeneity rate (SHR) ranged from 304.44 to 334.94‰/day. The group with DFR of 1.0% exhibited the highest degree of heterogeneity. Minor fin erosion was observed in the caudal fin by the end of the experiment. No significant differences were revealed in selected biochemical parameters indicating the liver, spleen, and intestinal function. All the fish tested were adequately fed, being provided sufficient nutrients for the proper growth of pikeperch. The DFR of 1.5% was evaluated as the most favourable. This amount of feed supported a higher number of values for Fulton’s coefficient (FC), specific growth rate (SGR), thermal growth rate (TGR), fish weight heterogeneity, growth of total fish biomass (BG), and optimum level of biochemical parameters in blood plasma.

Transcriptome analysis reveals differential gene expression in tomato under high-temperature stress

Yun Li, Xin Ye, Lingzeng Lv, Na Chen

Czech J. Genet. Plant Breed., 2025, 61(3):160-179 | DOI: 10.17221/45/2025-CJGPB

Tomato is a major global crop, extensively cultivated in China. However, the molecular mechanisms underlying its responses to high-temperature stress remain poorly understood. This study investigates these mechanisms by examining a heat-resistant tomato variety, Hm 2-2 (R), and a heat-sensitive variety, BY 1-2 (S), under high temperature (40 °C). Total RNA was extracted from samples taken at 0 and 24 h post-treatment, followed by RNA-sequencing (RNA-seq). Differentially expressed genes (DEGs) were screened based on the criteria of |log2 fold change| ≥ 2 and false discovery rate ≤ 0.05. Gene ontology (GO) function annotation and Kyoto Encyclopedia of Genes and Genomes (KEGG) metabolic pathway enrichment analysis were performed to explore the biological significance of these DEGs. The results revealed 6 038 upregulated and 2 866 downregulated DEGs in the R-0 (Hm 2-2 plants treated at 40 °C for 0 h) vs. R-24 (Hm 2-2 plants treated at 40 °C for 24 h) group and 5 297 upregulated and 3 920 downregulated DEGs in the S-0 (BY 1-2 plants treated at 40 °C for 0 h) vs. S-24 (BY 1-2 plants treated at 40 °C for 24 h) group, respectively. GO enrichment analysis indicated that the majority of DEGs were associated with biological processes, followed by cellular components and molecular functions. KEGG pathway analysis identified 130, 131, 89, and 115 regulatory (or altered) pathways in the R-0 vs. R-24, S-0 vs. S-24, S-0 vs. R-0, and S-24 vs. R-24 group comparisons, respectively. Notably, pathways related to protein processing in the endoplasmic reticulum and plant hormone signal transduction were significantly enriched, suggesting their critical roles in the tomato’s response to heat stress. Moreover, 156 transcription factors (TFs) implicated in heat stress response were identified, spanning various TF families such as MYB, AP2-EREBP, b-ZIP, bHLH, NAC, and WRKY. Quantitative RT-PCR analysis of 14 randomly selected DEGs validated the RNA-seq results confirming the reliability of the data. In summary, this study provides valuable insights into the molecular mechanisms of tomato’s responses to high-temperature stress, laying a crucial foundation for future research in this area.

Ameliorative effect of yeast cell walls on broiler chickens’ performance and gut health under coccidiosis challengeOriginal Paper

Shawkat Abdulrazaq M'Sadeq

Czech J. Anim. Sci., 2023, 68(8):346-355 | DOI: 10.17221/24/2023-CJAS

This study was conducted to evaluate the efficacy of yeast cell wall parts (YCW) in reducing the severity of coccidiosis in broiler chickens. One-day-old Ross 308 chicks (n = 320) were randomly allocated to 32 floor pens in two rooms with a 2 × 4 factorial arrangement of treatments. Factors were (1) challenge: negative or positive by room, (2) feed additive: control (none), anticoccidial (salinomycin at 60 mg/kg), YCW 0.1% or 0.2%. On day 8, none-challenged room was inoculated with saline, and challenged room was inoculated with 5 000 Eimeria tenella oocysts. Performance results showed that in challenged birds, feed conversion ratio (FCR) and weight gain (WG) were poorer than in unchallenged birds on day 24 and 35. Birds given anticoccidial and YCW had improved FCR and WG (P = 0.01) over the control group. Challenge and additive interactions were observed on day 24 and day 35 for FCR and WG (P = 0.01) and for feed intake on day 24 (P = 0.01). Challenged birds fed YCW on days 24 and 35 had higher WG and better FCR compared with both challenged and non-challenged controls and anticoccidial treatment. Coccidial challenge increased crypt depth (CD), villous tip and base width, and villous surface area and decreased villous height to crypt depth ratio (VH : CD) and villous height (VH). Birds fed YCW exhibited significantly decreased CD, villous tip width, villous base width, villous surface area and increased VH, VH : CD in comparison to the control group. Challenged birds fed YCW had significantly lower bursa of Fabricius follicle length compared to birds fed the control diet. Challenged birds had significantly increased serum alanine transaminase (ALT) and aspartate aminotransferase (AST) concentrations than non-challenged birds. In conclusion, these results demonstrated that the yeast cell wall has the ability to control coccidiosis.

Lactoferrin – The protective component of goat colostrum and milkOriginal Paper

Pavlína Navrátilová, Klára Bartáková, Jan Pospí¹il, Lenka Vorlová, Tomá¹ Kopec, Oto Hanu¹, Hana Nejeschlebová, Eva Samková, Josef Kuèera (ORCID: 0000-0002-8751

Czech J. Anim. Sci., 2025, 70(12):538-553 | DOI: 10.17221/123/2025-CJAS


Lactoferrin (LF) is an important bioactive component of colostrum, is critical for the development of immunity in the newborns, and it is an important component of the mammary gland defence system. LF is also an important biomolecule in terms of promoting and restoring the human health. The aim of our study was to monitor the dynamics of changes in lactoferrin concentration in goat milk at varying stages of lactation and its correlation with selected components and physicochemical parameters. Colostrum (n = 24) and milk (n = 120) samples were obtained from 12 goats by hand milking. Lactoferrin was determined using reversed-phase high-performance liquid chromatography with an ion-pairing reagent equipped with a Photodiode Array Detector. The LF concentration in colostrum ranged from 206 mg/l to 1 228 mg/l, and showed a statistically significant decrease in concentration (P < 0.05) over the colostral period. Significant correlation coefficients (P < 0.001) were found between crude protein and LF (r = 0.896), lactose and LF (r = –0.754), as well as between non-fat solids and LF (r = 0.853). The LF content in milk ranged within a relatively wide range of 94 mg/l to 1 115 mg/l although the values were highly variable (vx = 57.0%). Significant correlations were found between fat content and LF in milk (r = 0.429, P < 0.001), crude protein and LF (r = 0.376), non-fat solids and LF (r = 0.361), somatic cell count (SCC) and LF (r = 0.330), as well as log SCC and LF (r = 0.348, P < 0.01).

Sustainable medicinal plant production – responses of Lamiaceae plants to organic acid elicitors spraying during environmental stress: A reviewReview

Ismail Mahmoud Ali Shahhat, Arbi Guetat, Salma Yousif Sidahmed Elsheik, Medhat Ahmed Abu-Tahon, Abdelrahman Talha Abdelwahab, Marwa Abdelfattah Awad

Plant Protect. Sci., 2025, 61(2):110-151 | DOI: 10.17221/83/2024-PPS

This article provides a review of recent studies on the extent to which the use of organic acid elicitors such as salicylic, jasmonic, humic and ascorbic acids has been successful in alleviating the exposure of Lamiaceae plants to unfavourable environmental conditions such as drought and salinity. Overall, the results concluded all organic acid elicitors enhanced the morphological and physiological characteristics of biochemical and secondary metabolite contents. These improvements have enabled plants of the Lamiaceae family to adapt to environmental stress conditions to some extent and survive, thus achieving sustainability in the production of plants of this family. It can be recommended to use salicylic acid in concentrations 0.5–2.5 mM, and it should not exceed it so as not to cause poisoning and disruption of the vital and physiological processes within the plant. In contrast, these plants have limited studies on the relationship between jasmonic acid/ascorbic acid and ascorbic acid. Since vitamins such as ascorbic acid are essential for plant metabolism and growth regulation, their effect on these plants remains unstudied at concentrations 2–10 mM under different abiotic stresses. Further research is needed to understand the impact of Nano-SA, JA, HA, ASA, and citric acid on Lamiaceae plants under various environmental stress conditions. Limited studies exist on the relationship between jasmonate/humic acid and Lamiaceae plants under abiotic stress. The Lamiaceae family needs more studies on adaptation to various environmental conditions and the toxicity of stimulants used to confront these conditions. This research contributes to improving agricultural practices in challenging environmental regions.

Whole genome sequencing analysis of two sinensis tea (Camellia sinensis var. sinensis) clones: Assessment of molecular variations to search for breeding markersOriginal Paper

Dwinita Wikan Utami, Adhityo Wicaksono, M. Khais Prayoga, Heri Syahrian, Vitria P. Rahadi, Erdiansyah Rezamela, Budi Martono, Tri Joko Santoso, Nur Kholilatul Izzah, Haris Maulana, Ady Daryanto, Rerenstradika Tizar Terryana (email: rerenstradika.tizar.terryana

Czech J. Genet. Plant Breed., 2026, 62(2):76-88 | DOI: 10.17221/116/2025-CJGPB

Tea (Camellia sinensis (L.) Kuntze) is a globally important crop valued for its flavour diversity and health benefits. Whole-genome sequencing (WGS) was performed to compare genomic variation and functional potential between clone Yabukita and locally adapted clone I.1.93. Using next-generation sequencing, approximately 10× genome coverage was achieved for both clones, with high mapping efficiency (98.24% for Yabukita and 97.88% for clone I.1.93), ensuring reliable downstream analyses. Single nucleotide polymorphism (SNP) analysis revealed distinct genomic patterns, with Yabukita showing a more uniform chromosomal SNP distribution, while clone I.1.93 exhibited higher SNP densities on specific chromosomes, particularly chromosomes 5 and 13. Silent mutations predominated in Yabukita (48.21%), whereas missense mutations were more frequent in clone I.1.93 (57.97%), suggesting greater functional divergence. Most SNPs occurred in non-coding regions, indicating potential regulatory roles. GO and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses revealed highly similar shared pathways, including photosynthesis and protein interactions, alongside clone-specific enrichment related to photosynthesis in Yabukita and stress responses in clone I.1.93. miRNA profiling identified distinct regulatory patterns, including the clone-specific miR530 in clone I.1.93. Biosynthetic gene cluster analysis further predicted secondary metabolite pathways associated with terpenoid, polyketide, and saccharide biosynthesis. These findings provide valuable genomic insights for tea improvement and breeding programs.

Genotypic variation in physiological, biochemical, and transcriptional responses to drought stress in spring barley at an early growth stageOriginal Paper

©arlota Kaòuková, Marcela Gubi¹ová, Martina Hudcovicová, Jozef Gubi¹, Katarína Ondreièková

Plant Soil Environ., 2025, 71(12):905-922 | DOI: 10.17221/406/2025-PSE

Drought is a major abiotic stress limiting barley (Hordeum vulgare L.) productivity. We evaluated 17 spring barley genotypes at the early leaf development stage under controlled laboratory conditions with optimal and drought treatments, integrating physiological, biochemical, and molecular traits. Drought reduced relative water content (–1.3% to –3.2%), plant height (–14.7% to –29.6%), and dry biomass (–2.3% to –24.9%), while inducing strong proline accumulation (+23.6% to +454%) and pigment loss (chlorophyll a –10.1% to –79.5%; carotenoids –6.2% to –70.9%). Principal component and discriminant analyses identified plant height and chlorophyll a as the most reliable discriminators, whereas relative water content was less predictive of the species. Multivariate stratification separated tolerant (Argument, Exalis, Slaven, Malz, Valis), intermediate (Laudis 550, Tango, Kompakt, LG Belcanto, SK Levitus), and sensitive (Kangoo, LG Tosca, LG Flamenco, Karmel, Bojos, Nitran, Tadmor) groups of genotypes. Gene expression profiling of 12 genotypes revealed a modest induction of HvABF2 (1.77-fold), moderate upregulation of HvSOD1 (1.82-fold) and HvAPX1 (2.28-fold), and the strongest response in HvP5CS (3.29-fold), which did not consistently correlate with tolerance. Tolerant genotypes combined growth stability, pigment retention, and moderate osmotic adjustment, whereas sensitive genotypes relied on excessive proline accumulation, resulting in severe pigment and growth penalties. Overall, drought tolerance in barley at the early growth stage emerged from the coordinated regulation of growth, photoprotection, and stress-gene activation, providing a foundation that can guide the selection of genotypes for subsequent validation under field conditions and future breeding programmes.

Phenolic and antioxidant assessment of the flowers, stems, leaves, and fruits of Rosa pimpinellifolia and Rosa canina at different growth timeOriginal Paper

Mehmet Öz, Onur Tolga Okan, Cemalettin Baltaci

Hort. Sci. (Prague), 2026, 53(1):15-26 | DOI: 10.17221/163/2023-HORTSCI


Natural plants are abundant in their native habitats and are traditionally used to treat a variety of health conditions. The Rosa genus stands out as an important species rich in bioactive compounds. This study, conducted in Türkiye, aimed to analyse the antioxidant and phenolic profiles of methanolic extracts obtained from different parts of Rosa canina (R.c.) and Rosa pimpinelifolia (R.p.) collected in 2021 and 2022. The antioxidant activity values of R.c. collected in 2021 and 2022 were found to be between 5 102.31–46 396.36 mmol Fe(II)/100 g in ferric reducing antioxidant power (FRAP), 141.92–377.54 mg ascorbic acid equivalents (AA)/kg in total antioxidant capacity (TAC), 2.18–24.68 µg/g in 2,2-diphenyl-1-picrylhydrazyl [DPPH (EC50)] and 34.31–75.77 % in DPPH (% inhibition). Antioxidant activity of R.p. collected in 2021 and 2022 ranged from 17 258.44–71 903.20 mmol Fe(II)/100 g, 271.69–479.19 mg AA/kg, 1.02–8.32 µg/g and 50.98–85.57% for FRAP, TAC, DPPH (EC50) and DPPH (% inhibition), respectively. The R.p. extracts generally exhibited higher antioxidant activity than those of R.c. Considering the total identified phenolic compounds achieved from different plant parts of rosehip for both years, the highest values of total phenolic compounds were determined in R.c. leaves (222.08 mg/100 g) in 2021, and R.p. leaves (5 465.95 mg/100 g) in 2021.

Effects of omega-3 fatty acids on fresh bull semen quality: A systematic review and meta-analysisReview

Jabulani Ngcobo, Thobela Louis Tyasi

Czech J. Anim. Sci., 2026, 71(3):97-108 | DOI: 10.17221/6/2026-CJAS


Polyunsaturated fatty acids (PUFAs), including omega-3, are known to yield health benefits to mammals, including bulls and human beings. This meta-analysis was done to determine the influence of omega-3 fatty acids (OMFA) on bull semen quality. The research question formulated for this meta-analysis was centred on the Population-Intervention-Comparison-Outcome (PICO) framework. To determine the influence of omega-3 fatty acids on semen quality, a meta-analysis was conducted using the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines. The different effects were analysed using a random effects model. The variations among the included studies were tested using heterogeneity (I2). Semen volume (MD = 0.28, 95% CI: 0.13; 0.44), sperm concentration (MD = 71.12, 95% CI: 15.97; 126.26), live sperm (MD = 11.93; 95% CI: 7.30; 16.55), sperm motility (MD = 9.24, 95% CI: 7.39; 11.09) and plasma membrane integrity (MD = 11.60, 95% CI: 6.30; 16.89) increased dramatically in the omega-3 fatty acid-supplemented group. Notably, the progressive motility (MD = 1.19, 95% CI: –3.24; 5.61) was the only sperm parameter showing a non-significant influence when omega-3 fatty acids were supplemented. It was then concluded that the omega-3 fatty acid supplementation can be used to improve most of the semen parameters in bulls.

Cytotoxic and apoptotic effects of etoposide and ellagic acid alone or with possible synergistic/additive combinations on a canine D-17 osteosarcoma cell lineOriginal Paper

GS Ekren Asici, F Kiral, A Bildik, PA Ulutas

Vet Med - Czech, 2025, 70(8):279-293 | DOI: 10.17221/24/2025-VETMED

Osteosarcoma (OSA) is the most prevalent and aggressive malignancy of canine bones. Etoposide is an effective chemotherapeutic agent for cancer treatment, whereas ellagic acid is a naturally occurring compound with antioxidant and anticancer properties; however, both are inhibitors of the topoisomerase enzyme. In this study, the synergistic/additive effect of etoposide, known to have a growth-inhibitory impact in canine osteosarcoma (OSA) cells, and ellagic acid was investigated. The mechanism by which this effect inhibits cell growth at lower etoposide doses was also examined. The IC₅₀ values of both agents were determined, and possible combination doses were generated accordingly and applied to canine OSA cells. The apoptotic effects of the combinations were evaluated based on DNA breaks and the activity levels of caspase 3, 8, and 9. These findings were supported by the expression levels of Bcl-2, Bax, and Bid genes, as well as the AO/EtBr staining method. The effects on cell cycle and proliferation were analysed through survivin and NF-κβ gene expressions. Antimetastatic effects were determined using invasion and migration assays. EA is a potential therapeutic agent for cancer treatment. In combination with ET, a higher anticancer efficacy was demonstrated compared to etoposide alone. Potential treatment side effects can be reduced by enabling the use of lower drug doses.

Ginger essential oil-infused pectin-alginate films for extending sliced bread shelf lifeOriginal Paper

Nguyen Hong Khoi Nguyen, Nam Quoc Tran, Thuan Huynh Dinh Nguyen, Quyen Phuong Huynh

Czech J. Food Sci., 2025, 43(6):438-449 | DOI: 10.17221/24/2025-CJFS

This study examines composite films made from pectin and alginate, enhanced with ginger essential oil (GEO) at 0, 0.5, 1, and 1.5% concentration. The films were analysed for their structure, physical properties, antioxidant and antibacterial activities, and effectiveness in preserving sliced bread over 0, 2, 4, 6, and 8 days. The outcomes presented that incorporating GEO upgraded pectin-alginate films' properties. SEM images revealed increased essential oil distribution on the film surface with higher GEO concentrations, indicating good compatibility. Higher GEO concentrations enhanced the films' abilities to scavenge free radicals DPPH, 2,2-diphenyl-1-picrylhydrazyl; and ABTS, 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) and inhibit bacteria (Listeria monocytogenes and Escherichia coli). Furthermore, increasing GEO concentrations in the films helped maintain key quality attributes of sliced bread, such as moisture content, water activity, microbial counts, and firmness. Films with 1.0 and 1.5% GEO concentrations were the most effective in preserving bread, potentially inhibiting mould formation and maintaining sensory properties over the 8-day storage period. This study demonstrates that pectin-alginate films supplemented with GEO at 1 and 1.5% concentration are suitable for storing sliced bread.

Performance and physiological responses of E. coli-challenged broiler chickens to dietary Moringa oleiferaOriginal Paper

Ari Hameed Omer, Sherzad Mustafa Hussein

Czech J. Anim. Sci., 2026, 71(2):79-93 | DOI: 10.17221/153/2025-CJAS


This study was conducted to examine the effects of Moringa oleifera (MO) seed powder on the performance and gut health of broilers challenged with E. coli. A total of 720 one-day-old Ross 308 broiler chicks were randomly allocated to 72 pens across two separate rooms, following a 2 × 6 factorial design. The factors per room included (i) challenge: no or yes, and (ii) feed additive: control (none), antibiotic [oxytetracycline (OTC) at 0.5 g/kg], MO 0.1%, MO 0.2%, MO 0.4%, and MO 0.8%. At 9 days old, birds in both challenged and non-challenged rooms were inoculated with 1.5 ml of E. coli-O157:H7 inoculant (3.8 × 108 CFU) and 1.5 ml of saline, respectively. Performance data showed that, throughout the study, unchallenged birds had better weight gain (WG) and feed conversion ratio (FCR) than challenged birds. On day 35, broilers given OTC and all MO levels showed improved WG (P < 0.001) and FCR (P < 0.003). Interactions between challenge and additives were observed on day 10 for FCR (P = 0.031); on days 24 and 35 for WG (P < 0.001); and on days 24 and 35 for FCR (P < 0.004 and P = 0.002, respectively). On day 24, challenged birds fed all MO levels exhibited higher WG and better FCR than challenged controls, while on day 35, both challenged and unchallenged MO-fed birds showed improved WG and FCR compared to control groups. E. coli significantly increased crypt depth (CD), jejunum muscle thickness, and caecal E. coli colonies. MO significantly enhanced villus height (VH), the VH : CD ratio, villous tip width, and surface area, while decreasing CD, muscle thickness, and E. coli colonies. Challenged birds had significantly lower serum total protein, albumin, and Newcastle Disease Virus (NDV) titres, while serum alanine aminotransferase ALT activity was higher than in non-challenged birds. Overall, Moringa at 0.4% showed comparable or better results than OTC in preventing E. coli-induced declines in broiler performance and gut health.

Forest carbon and a regional perspective on the effectiveness of financial instruments within the forest bioeconomyOriginal Paper

Michaela Perunová, Jarmila Zimmermannová, Tereza Schovánková

J. For. Sci., 2024, 70(6):317-334 | DOI: 10.17221/24/2024-JFS

The forest bioeconomy links to a climate-neutral economy for which effective economic and financial promotion is essential to sustainable development. The main purpose of this study was to examine the effects of financial support on the development of the forest bioeconomy in the Czech Republic in the period 2000–2021. Research objectives were met by applying literature review, time series analysis, spatial data analysis, cartogram and cartodiagram method, correlation analysis, and regression analysis. Firstly, regional divergences in financial flows were observed. Owing to the bark beetle calamity, the peak of the financial support was detected in the Vysoèina Region (CZK 4 658/EUR 190 per ha), and the Olomouc Region (CZK 2 780/EUR 113 per ha) in 2020. An upward trend – more than 6-fold growth of financial flows to forestry was found. Secondly, the forest carbon model was discovered and tested. Financial contribution for reforestation, establishment, and tending of forest stands increases net carbon sinks while financial contribution for green and environmentally friendly technologies increases net carbon sources. Regional carbon reservoirs offer the potential to contribute to climate targets and achieve sustainable progress.

Inorganic improver and straw returning promote corn growth and improve the quality of saline soilsOriginal Paper

Jipeng Wang, Junchuan Huang, Xinyu Hou, Quangang Yang, Hong Pan, Hui Wang, Fei Han, Yanhong Lou, Yuping Zhuge

Plant Soil Environ., 2025, 71(3):232-247 | DOI: 10.17221/35/2025-PSE

Soil salinisation is a major constraint on food security and agricultural development, and remains a critical concern in the agricultural sector. In this study, we examined the effects of three straw return methods – straw mulching, straw burial, and a combination of straw mulching and burial – along with inorganic amendments (CaSiO3 and MgSO4) on maize growth, soil organic matter, bulk density, salinity, and the contents of individual salt base ions. A 120-day planting experiment was conducted using soil columns and included maize cultivation under irrigation and drenching conditions. The combined treatments (straw return with Ca-Mg application) were more effective in reducing salinity and improving soil properties than straw return alone. Na+, K+, Cl, and HCO3 contents, as well as soil bulk density, decreased by 45.99–48.43, 28.07–28.36, 20.91–24.17, 18.93–21.03, and 7.64–8.40%, respectively. Regarding crop growth promotion, compared with the single treatment, the combined application of straw return with Ca-Mg (PI, SPI) resulted in a 6.46–8.30% increase in superoxide dismutase activity, an 8.66–10.83% reduction in malondialdehyde content, a 12.71–22.70% increase in total root length, a 13.41–24.14% increase in root surface area, and a 12.46–19.02% increase in root volume. Taken together, integrating straw return with a calcium-magnesium mixture represents a promising strategy for improving the quality of coastal saline soils.

Microsatellite markers as a useful tool for species identification and assessment of genetic diversity of the Tilia species in the Czech RepublicOriginal Paper

Pavlína Máchová, Helena Cvrèková, Olga Trèková, Kateøina Vítová, Johana Pechaèová, Václav Buriánek, Petr Madìra, Kateøina Hou¹ková, Tomá¹ Vyhnánek, Pavel Hanáèek

Czech J. Genet. Plant Breed., 2026, 62(1):14-24 | DOI: 10.17221/102/2025-CJGPB

Diagnostic morphological traits distinguishing Tilia cordata and T. platyphyllos are not always apparent. Precise species identification is crucial for conservation management and for establishing genetic resources of forest reproductive material. In this study, we employed fifteen microsatellite (SSR) markers to identify diagnostic loci for reliable species discrimination between T. cordata and T. platyphyllos species and to evaluate the genetic diversity. A total of 250 trees were sampled from eight natural autochthonous populations of T. cordata and T. platyphyllos in the Czech Republic, and additional ten individuals of T. tomentosa were included for comparison. Markers Tc8 and Tc918 were identified as diagnostic, exhibiting species-specific alleles for T. cordata and T. platyphyllos. Contrary to the previously published results, we obtained PCR amplicons at locus Tc918 with an allele size of 226 bp in T. cordata. An analysis of the fifteen SSR loci revealed a high level of genetic variability in both the T. cordata and T. platyphyllos populations. No clonally identical genotypes were detected across the eight study sites. The genetic differentiation (Fst) was higher between T. platyphyllos and T. tomentosa (0.316) than between T. platyphyllos and T. cordata (0.205). Bayesian clustering further revealed distinct genetic structures for T. cordata, T. platyphyllos, and T. tomentosa.

Soil pore structure and its research methods: A reviewReview

Nannan Wang, Tibin Zhang

Soil & Water Res., 2024, 19(1):1-24 | DOI: 10.17221/64/2023-SWR

Soil pore is an important part of soil structure. According to the causes of formation, soil pores can be divided into biological pores formed by animal movement and plant root development and non-biological pores formed by dry-wet and freeze-thaw alternation or artificial tillage. The soil pore structure affects the migration of water, gas, nutrients and so on in the soil, especially the macropores can also produce water or solute preferential migration. Studying soil pores is of great significance for predicting soil hydraulic properties, reducing groundwater pollution and soil nutrient loss. Based on previous studies on soil pore structure, this paper systematically summarized the role of soil pores, influencing factors and the advantages and disadvantages of various research methods. This paper not only introduces traditional methods (including direct and indirect methods), but also summarizes the new research on soil pores combined with computed tomography (CT) technology and other science and technology in recent years. Finally, the prospect and development trend of soil pore research in the future were predicted, so as to provide reference for further research on soil pore structure.

The content and potential ecological risk assessment of heavy metals in coastal wetlands around the Bohai SeaOriginal Paper

Yingchun Lv, Mengyi Wang, Wanxin Tian, Haibin Hui

Plant Soil Environ., 2024, 70(6):356-365 | DOI: 10.17221/24/2024-PSE

Coastal wetlands play a vital role in the migration and transformation of heavy metal pollutants in watersheds. There were 30 surface sediment samples that were analysed to investigate the distribution and ecological risks of heavy metals in the coastal wetlands around the Bohai Sea. Our results showed that the average concentrations of Pb, Cr, Ni, Cu, Zn, and Cd in these wetlands were 17.92 ± 5.81, 50.29 ± 20.50, 31.53 ± 9.71, 25.37 ± 4.29, 80.13 ± 15.11, and 0.92 ± 0.54 mg/kg, respectively. Relative to other wetlands, Pb (25.43 ± 2.68 mg/kg) and Cd (1.67 ± 0.06 mg/kg) contents were higher in the Liaohe Delta wetland (LHDW). Cu (28.44 ± 3.71 mg/kg), Cr (83.11 ± 5.80 mg/kg), and Ni (45.91 ± 3.02 mg/kg) contents were higher in the Yellow River Delta wetland (YRDW). The Zn (120.86 ± 7.41 mg/kg) content was higher in the Qilihai wetland. Heavy metal concentrations in coastal wetland sediments are shown to be positively correlated with organic matter content. Our results showed that the concentration of heavy metals decreases with increasing sediment particle size. In this study, Cd showed the highest pollution index and, therefore, more attention should be paid to the potential ecological risks of Cd in coastal wetlands around the Bohai Sea, especially in the LHDW and YRDW.

Integrated effect of inorganic and bio-organic nutrients on alstroemeria growth, flowering and soil dynamicsOriginal Paper

Shweta Sharma, Anshul Kumar, Sabhya Pathania, B.P. Sharma, Bharati Kashyap, Abeer Hashem, Graciela Dolores Avila-Quezada, Elsayed Fathi Abd_Allah

Hort. Sci. (Prague), 2025, 52(2):144-154 | DOI: 10.17221/15/2024-HORTSCI

Optimum nutrition is essential for quality cut flower production and for improving soil health. The study aims to evaluate the interaction between bio-organic and inorganic nutrient sources in enhancing alstroemeria (Alstroemeria hybrida L.) cut flower production and soil health for sustainable cultivation practice. Randomised block methodology involving 20 treatment combinations of inorganic fertilisers (NPK) and biostimulants (Panchgavya and Jeevamrit) applied at varying concentrations. Significant outcomes emerged from the combined influence of inorganic and organic sources of nutrients. The application of the 100% recommended dose of fertiliser (RDF) with 75 mL of Panchgavya resulted in substantial improvements in alstroemeria growth parameters, including plant height (7.8%), early flowering (13.08%), flower diameter (20.03%) and the number of flowering stems (25.3%) over the control (100% RDF). Plant spread (24.1%) and number of florets/stem (26.6%) were improved with the application of 100% RDF with 50 mL of Panchgavya when compared with the control. Soil nutrient content, i.e. available nitrogen (11.5%), phosphorus (28.7%), potassium (13.8%) and microbial populations, i.e. fungal (35.4%) and bacterial (28.2%) colonies also exhibited noteworthy enhancements with the application of 100% RDF with 75 mL of Panchgavya over the control. The study concludes that the application of 100% RDF with 75 mL of Panchgavya increased quality cut flower production in alstroemeria.

Different particle sizes of laying hens diets and it’s effect on blood biochemical parameters, ileal digesta viscosity and nitrogen retentionOriginal Paper

Ondøej ©»astník, Dana Zále¹áková, Jakub Novotný, Vojtìch Kumbár, Andrea Roztoèilová, Eva Mrkvicová, Leo¹ Pavlata

Czech J. Anim. Sci., 2025, 70(5):183-193 | DOI: 10.17221/11/2025-CJAS

The aim of this work was to evaluate the effect of different particle sizes of hens diets on blood biochemical parameters, ileal digesta viscosity and nitrogen retention. In the experimental part, the effects of different physical structure were investigated on two groups of laying hens of the Bovans Brown hybrid from 76 to 80 weeks of age. A finely ground mash diet [geometric mean diameter (GMD), 632 µm] and a coarsely ground mash diet (GMD, 1 258 µm) with the equal nutritional content were used. In the experiment, the particle sizes of the feed mixtures were analysed and compared with the particle size of unaccepted feed residues using a feed separator. Furthermore, feed consumption, live weight of laying hens, blood biochemical parameters, digestive viscosity and nitrogen retention coefficient were assessed. The study revealed that the particle sizes of hens’ diets significantly influenced the nitrogen retention coefficient, with higher values observed in the finely ground diet as compared to the coarsely ground diet (30.3 vs 24.0%; P < 0.05). However, no significant differences were observed in feed intake, live weight, blood biochemical parameters, or digesta viscosity between the dietary groups (P > 0.05). This finding highlights the potential of diet structure optimisation to improve nutrient utilisation efficiency, which is particularly relevant for reducing nitrogen excretion and its environmental impact. These novel insights provide a foundation for further research on the effects of feed structure on productivity and organ health.

Chlorhexidine dihydrochloride's effect on clinical, veterinary and food-origin Staphylococcus aureusOriginal Paper

Marta ©tindlová, Václav Peroutka, Simona Lencová, Kamila Zdeòková

Czech J. Food Sci., 2025, 43(5):326-335 | DOI: 10.17221/201/2024-CJFS

Chlorhexidine (CHX) is a bactericidal agent used as a common disinfectant since the 1950s. However, its effectiveness may have diminished over the time due to the rise of microbial resistance even among nonantibiotics. In this study, we evaluate the response of 46 Staphylococcus aureus isolates to CHXdihydrochloride according to their origin and phenotype (haemolysis induction, coagulase production, methicillin resistance and biofilm formation). Following classification, the influence of seven CHX concentrations (10.00–0.50 mg·L–1) on planktonic cell growth and biofilm formation was evaluated spectrophotometrically at 620 nm and 595 nm (24 h). Even though the effect of CHX was strain-specific irrespective of origin or phenotypic profile, concentrations above 2.50 mg·L–1 were almost uniformly determined as bactericidal. Although the non-bactericidal concentrations did not indicate any statistically significant differences, they did promote biofilm formation in some cases. Overall, our results suggest that CHX is still an effective disinfectant and an antimicrobial agent against S. aureus.

Characterization of carotenoid profiles and presence of functional markers in sub-tropical maize (Zea mays L.) inbred linesOriginal Paper

Peter Amoah, Victor O. Adetimirin, Bismark Anokye, Oluyinka J. llesanmi, Nnanna Unachukwu, Elisabeth Ivania Aporva

Czech J. Genet. Plant Breed., 2025, 61(2):86-99 | DOI: 10.17221/143/2024-CJGPB

Biofortification provides a sustainable, pragmatic strategy to address the lack of vitamin A and the associated health complications. The objectives of the study encompassed the quantification of the carotenoid content of 147 maize inbred lines, the identification of variable regions within the ZEP1 gene, the correlation of these observed variances in the presence of this gene with carotenoid content, and the identification of lines harbouring the favourable alleles of the crtRB1 gene. The observed correlations among the carotenoids synthesised by distinct branches of the biosynthetic process were both significant and positive. Utilising gel-based genotyping, 24 lines with contrasting carotenoid profiles were selected, evaluated and sequenced. Analysis of the variation in the sequence classified these lines based on their similarities to give 8 allele groups. The findings highlight that inbred lines both group 1 and group 8 exhibited significant associations with the carotenoid content of the lines. Specifically, ZEP1_7852, a discernible variation belonging to group 8, was found to be significantly associated with zeaxanthin content and total carotenoid content. Furthermore, 25 lines were found to have provitamin A content above 15 μg/g, harbouring the favourable alleles of the crtRB1 gene using KASP SNP zm0016. These lines can serve as parents for source populations and hybrids, leading to the further enhancement of provitamin A in maize.

The role of ground heat flux in estimating evapotranspiration by the Penman-Monteith method on mountain meadowOriginal Paper

Michal Dohnal, Jana Votrubová, Rebeka Mazúchová, Miroslav Tesaø

Soil & Water Res., 2025, 20(4):265-273 | DOI: 10.17221/24/2025-SWR

Ground heat flux (G) is often an overlooked component of the surface energy balance, and its accurate determination remains challenging. In the present study, the accuracy of various G estimation methods is examined using long-term measurements from the Central European mountain meadow. The impact of different G approximation on calculated evapotranspiration by the Penman-Monteith method (ET) is analysed. Soil heat flux measurements and surface temperature data were used to determine G, while net radiation was used to approximate G. Neglecting G led to an overestimation of ET in the daily timestep. On the contrary, the FAO-recommended hourly approximation overestimated G, underestimating ET. Site-specific calibrations of G prediction models improved their accuracy. For daily average G, as well as for hourly average G, simple constant parameter models (i.e., models including a single parameter specifying the fraction of net radiation directly) provide satisfactory accuracy of ET evaluation. However, in an hourly timestep, net radiation fails as a predictor of G shortly after sunrise and before sunset. The findings emphasise the importance of considering G in ET calculations and the need for site-specific calibrations of G estimation models.

Forest transformation effects on the soil water-holding capacity depend on the forest characteristics and soil properties: A case study in the subtropical regions of southeast ChinaOriginal Paper

Jiantao Zhou, Qiao Yang, Xin Peng, Qiqian Wu, Yan Peng, Yutong Zhang, Hualing Jiang, Fuzhong Wu, Kai Yue

J. For. Sci., 2025, 71(6):312-322 | DOI: 10.17221/8/2025-JFS

Forest transformation commonly occurs in subtropical areas due to extensive human disturbance. However, we know little about how forest transformation may affect the soil water-holding capacity. Here, we evaluated the effects of forest transformation from natural forests to secondary forests, Castanopsis carlesii plantations, and Cunninghamia lanceolata plantations on the soil water-holding capacity, including the soil water content (SWC), maximum water holding rate (Rt), capillary holding rate (Rc), and non-capillary water holding rate (Rn), and assessed the influences of soil properties and stand characteristics on the forest transformation effects. The results showed that (i) the soil water-holding capacity in secondary forests increased significantly (SWC: 27.3%; Rt: 50.9%; Rc: 36.9%; Rn: 14.0%), but decreased in the Cunninghamia lanceolata plantations (SWC: 24.6%; Rt: 47.0%; Rc: 34.0%; Rn: 13.0%), compared to the nature forests (SWC: 26.0%; Rt: 48.3%; Rc: 34.9%; Rn: 13.4%); (ii) the soil water-holding capacity was positively correlated with the soil porosity, soil total nitrogen concentration, stand density, but negatively influenced by the soil bulk density and diameter at breast height (DBH); and (iii) the stand density, DBH and litterfall amount were the major factors regulating the soil water-holding capacity after the forest transformation. Overall, these results indicated that the soil water-holding capacity would be strongly altered by the forest transformation, but it depends on the soil properties before the transformation and the characteristics of the transformed forests. Our findings will help to better understand the functions of forests in water source conservation under the pressures of human disturbances and environmental changes.

Early activation of CIPK3 in the cold-tolerant potato Solanum commersoniiShort Communication

Roberta Smimmo, Grazia Buonfantino, Clizia Villano, Domenico Carputo, Vincenzo D'Amelia, Riccardo Aversano

Czech J. Genet. Plant Breed., 2026, 62(1):49-52 | DOI: 10.17221/51/2025-CJGPB

Solanum commersonii shows tolerance to low temperatures, a key target trait for potato breeding. Calcium-dependent protein kinases (CIPKs) play a significant role in plant defence response to several stresses, including cold. In this study, we observed the expression of ScCIPK1, ScCIPK3, ScCIPK23 and ScCIPK24 in S. commersonii exposed to 4 °C at multiple time intervals. Initial findings revealed that these genes were under-expressed after 10 and 30 minutes of cold stress, except ScCIPK3. Notably, after 24 hours, all genes displayed higher expression levels compared to the non-stressed controls. These findings highlight the role of ScCIPK3 in the early stages of cold response and indicate a coordinated regulatory mechanism across CIPKs that likely contributes to the cold stress tolerance observed in S. commersonii. In this work, we introduce a model to elucidate the signalling crosstalk under cold stress in S. commersonii, providing insights that could facilitate the development of cold-resistant potato cultivars.

Occurrence of the white cochineal Parlatoria blanchardi in the fur of the black rat and potential risks for its spread to the date palm standsOriginal Paper

Randa Milk, Yasmina Kherbouche, Salim Meddour, Abdallah Aouadi, Makhlouf Sekour, Khawaja G. Rasool, Abdulrahman Saad Aldawood

Plant Protect. Sci., 2026, 62(1):71-78 | DOI: 10.17221/156/2024-PPS


The current study presents the first documented interaction between the date palm scale insect (Parlatoria blanchardi) and the black rats (Rattus rattus). For a year, this study investigated whether R. rattus could serve as a means of phoresy for the survival of P. blanchardi and the potential risks associated with its spread to date palm stands. Our research revealed a prevalence rate of P. blanchardi on R. rattus of 5.79% during the year, while a higher rate of 9.33% was observed during a specific five-month period. The mean infestation intensity was 3.39 parasites/rat during these five months. Statistical data revealed a highly significant difference in the distribution of the three age classes of P. blanchardi among the age categories of R. rattus (χ² = 62.067, df = 24, P = 3.244e–05). Furthermore, rat age classes differed significantly in their P. blanchardi infestation levels (χ² = 18.246, df = 3, P = < 0.001). The Negative Binomial Mixed Model showed a significant positive effect of temperature [(generalised linear mixed-effects models (GLMM): z (estimate/standard error) = 3.13, P < 0.01)] and sex (male) (GLMM: z = 2.22, P < 0.001) on insect abundance. These findings suggest that black rats may represent a previously unknown form of phoresy for the survival of the date palm scale insect, emphasising the need for further research to investigate this novel ecological interaction and its potential implications for pest management.

Biochar application influences the stability of soil aggregates and wheat yieldsOriginal Paper

Weijun Yang, Zilong Wang, Hongmei Zhao, Daping Li, Hongtao Jia, Wanli Xu

Plant Soil Environ., 2024, 70(3):125-141 | DOI: 10.17221/199/2023-PSE

In the present study, a field establishment was initiated in 2018 with eight treatment conditions using biochar application rates of 0, 10, 20, or 30 t/ha and nitrogen application rates of 0 or 150 kg/ha. After two years, the impact of biochar on carbon-nitrogen distributions, soil aggregate stability, and wheat yields was then assessed. The predominant mechanical aggregates after two years were > 5 mm and 2–5 mm granular aggregates, with notable increases in the amounts of these aggregates following the application of biochar with or without nitrogen that coincided with an increase in soil aggregate mechanical stability. Relative to control conditions, aggregate mean weight diameter (MWD) and geometric weight diameter (GMD) values rose by 17.6% and 24.3% for biochar with nitrogen treatment (N: 150 kg/ha; biochar: 20 t/ha), respectively. Biochar application alone and the application of both biochar and nitrogen fertiliser were associated with 6.4–20.2% and 20.7–42.7% increases in spring wheat yields, respectively. Overall, the results of these analyses highlight the value of applying biochar to improve soil quality and boost crop yields proximal to the study site. This study provided the scientific basis for the rational fertilisation and scientific management of biochar combined with nitrogen fertiliser in the irrigation area of Northern Xinjiang, China.

Preliminary results on the antioxidant capacity of the Coffea arabica grounds extract on semen parameters of Fleckvieh cattle in the Amazonas regionOriginal Paper

Deiner Jhonel Gongora-Bardales, Marilu Mestanza Mendoza, Gleni Tatiana Segura Portocarrero, Lizeth Amparo Heredia Vilchez, Jonathan Alberto Campos Trigoso, José Américo Saucedo-Uriarte, Hugo Frias Torres (ORCID: 0000-0003-0224

Czech J. Anim. Sci., 2024, 69(9):367-377 | DOI: 10.17221/115/2024-CJAS


Livestock farming is vital to a country's economy, and technological innovations in animal genetics and reproductive biotechnologies are key for environmental and socioeconomic development. This study aimed to evaluate the antioxidant capacity of Coffea arabica grounds (CAG) extract on the semen parameters of Fleckvieh cattle. CAG was processed, and its antioxidant capacity was assessed using DPPH, FRAP, and total phenols assays. Semen was collected from a pedigree bull and analysed macroscopically and microscopically. Different concentrations of CAG (0, 1, 1.5, and 2 mg/ml) were tested at 4, 12, 24, and 36 h post-refrigeration. The study used a completely randomised design with ten replications, and variables such as motility, kinetic parameters, membrane functionality, and acrosomal integrity were analysed. The normal distribution of the variables – motility, kinetic parameters, membrane functionality, and acrosomal integrity – was analysed using the Shapiro-Wilk statistical test (P > 0.05). An analysis of variance was then performed with a significance level of P < 0.05 to compare the means, using InfoStat software. Results showed that 1 mg of CAG significantly improved total motility and progressive motility at 4 h, along with kinetic parameters and membrane integrity. Overall, CAG exhibits antioxidant properties that enhance sperm characteristics, particularly at 1 mg/ml concentration after 4 h of refrigeration. However, further studies are needed to understand better the mechanisms of action and the overall efficacy of CAG as an antioxidant agent in this specific context.

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