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Results 121 to 150 of 4099:

Determination of yield and biochemical characteristics of turmeric (Curcuma longa L.) grown in subtropical climate zoneOriginal Paper

Fatma Uysal Bayar

Hort. Sci. (Prague), 2026, 53(1):49-58 | DOI: 10.17221/34/2024-HORTSCI

Curcuma longa L., known as turmeric, is a plant species belonging to the Zingiberaceae family. Turmeric is generally spread in Asian countries. It is used in many sectors, especially spices. It has been predicted that increasing climatic changes will affect the agricultural crop pattern. To provide an alternative crop for countries with sub-tropical climates, such as Turkey, the yield and quality values of turmeric grown under the greenhouse and shade net conditions were determined in the present study. Moreover, morphological traits such as plant height, tillering number, and leaf area were determined. The highest fresh yield (1 333.67 g/plant) was obtained under greenhouse conditions. Furthermore, the highest antioxidant value (3.01 IC50 mg/mg 2,2-diphenyl-1-picrylhydrazyl (DPPH)) was obtained under shade net conditions, while the highest total phenolic content (6.88 mg gallic acid equivalent (GAE)/g) was obtained under greenhouse conditions. Curcumin reached the highest level (1.79%) in greenhouse conditions. While the essential oil ratio varied between 5.22 and 7.32%, ar-turmerone, α-turmerone, and β-turmerone were determined as the main components in the essential oil. According to the results, turmeric can be grown in greenhouse conditions in subtropical regions.

Effect of density and mixed culture of largemouth bass (Micropterus salmoides) and pikeperch (Sander lucioperca) on growth, survival and feed conversion rate in intensive cultureOriginal Paper

Tomá¹ Pìnka, Oleksandr Malinovskyi, Jiøí Køi¹»an, Aiman Imentai, Tomá¹ Policar

Czech J. Anim. Sci., 2021, 66(10):428-440 | DOI: 10.17221/59/2021-CJAS

In this study, two experiments were performed with the aim to optimize intensive aquaculture of largemouth bass (Micropterus salmoides). In the first 140-day experiment the effect of the initial fish density was assessed at three levels: low density (LD) 23 kg/m3, medium density (MD) 35 kg/m3 and high density (HD) 46 kg/m3. All three densities provided the same final Fulton's condition coefficient (FC = 1.24-1.28), specific growth rate (SGR = 0.22-0.24%/day) and survival rate (97-100%). No cannibalism was observed at all tested densities. Feed conversion ratio (FCR = 1.39 ± 0.21 g/g) was the lowest for LD and the highest (1.61 ± 0.08 g/g) for MD. The highest fish biomass (25.7 ± 2.7 kg/m3) was obtained at HD and this density was considered as the most effective density of all tested ones during the intensive culture of largemouth bass. The second 60-day experiment tested the effect of largemouth bass and pikeperch (Sander lucioperca) monoculture and biculture of both species on production efficiency. Higher size heterogeneity was obtained in both (mono- and bicultural) groups of pikeperch (308.91-314.56‰/day) compared to the groups of largemouth bass (279.26-284.05 ‰/day). The higher FC (1.09) was found in both types of culture in largemouth bass compared to both methods of culture in pikeperch (0.74-0.78). The lowest SGR was evident in both types of largemouth bass cultures (1.20-1.28%/day). In contrast, the highest SGR was achieved in the bicultural pikeperch (1.88%/day). Similar results like for SGR were also assessed for FCR, where the highest value of FCR was in both cultures of largemouth bass (1.44-1.48 g/g) compared to the lowest FCR in the bicultural of pikeperch (0.73 g/g). Largemouth bass in both tested types of culture had higher survival rates (99.95-99.99%) compared to pikeperch (98.61-98.63%).

Analysing the consequences of Regional Comprehensive Economic Partnership on the agricultural economies of China, Australia and New ZealandOriginal Paper

Shilong Yang, Xiao Liang, Zhichao Lou, Yanwen Tan, Abdelrahman Ali

Agric. Econ. - Czech, 2024, 70(7):362-381 | DOI: 10.17221/327/2023-AGRICECON

The Regional Comprehensive Economic Partnership (RCEP) agreement is an important free trade agreement in the Asia Pacific region. The implementation of RCEP is greatly significant for ensuring the effective supply of agricultural products to member states. On the basis of the analysis of the agricultural product trade structure among China, Australia and New Zealand since 2000, we summarise in this article the potential consequences of tariff reduction for the agricultural products among the three countries under the RCEP framework. The Global Trade Analysis Project model has been used to analyse the effects of RCEP on the macroeconomic indicators, agricultural products trade and domestic agricultural output of the three countries. The research findings indicate that agricultural product trade among the three countries has grown rapidly since 2000. The results of the Global Trade Analysis Project simulations revealed that implementing RCEP will foster macroeconomic growth in the three countries. China’s imports of beef and dairy products and wheat from Australia and New Zealand will substantially increase, and China’s domestic production of this agricultural sector will decrease. Furthermore, India’s potential participation in RCEP will further affect China’s imports and exports of grain. These findings could guide the policymakers in the three countries in designing future agricultural production and trade strategies according to the different scenarios of international trade among the three countries and considering the potential of India joining.

On the origin of Bohemian cattle according to mitochondrial DNA

Karel Novák, Vojtìch Janák, René Kyselý

Czech J. Anim. Sci., 2026, 71(3):118-128 | DOI: 10.17221/127/2025-CJAS

The genomic structure of extant cattle populations can contribute to the reconstruction of the history of particular breeds or their subpopulations. Genome-wide population resequencing of extant populations of Czech Red Pied (CRP) cattle, its conserved nucleus herd, and Czech Red (CR) cattle detected a T106C polymorphism in mitochondrial DNA shared by the conserved CRP herd with a geographical belt of Anatolian, Illyrian and Eastern Alpine breeds. On the other hand, this SNP is practically absent in the historical cattle breeds associated with Northern Germany, including German Black Pied cattle, Holstein-Friesian and German Red Mountain cattle (GRM). Correspondingly, this indicator SNP was absent in CR cattle, which, like the GRM, belongs to the group of mountain red cattle breeds. It seems that the precursory cattle population in Central Europe was influenced by the germplasm from the Balkans-related group of breeds, thanks to the political and commercial influence of the Northern Italian, Austrian and Hungarian regions. In addition, the presence of this polymorphism in some European aurochs (Bos primigenius) bone remains suggests possible introgression from local aurochs populations. Alternatively, the T106C presence in yaks and in neighbouring cattle breeds in Northern India, China and Korea raises the possibility of origin of this polymorphism from yak populations. The spread of the T106C mutation in alpine regions is consistent with the known role of this mtDNA region in adaptation to the reduced oxygen pressure.

Effects of BRCA1 and TLR1 SNPs on milk production performance and somatic cell score in Holstein, Simmental and crossbred Holstein cattleOriginal Paper

Maja Mauriæ Maljkoviæ, Tomislav Ma¹ek, Marija ©pehar, Kristina Starèeviæ

Czech J. Anim. Sci., 2025, 70(7):267-275 | DOI: 10.17221/43/2025-CJAS


Mastitis is a complex, common and economically problematic issue in dairy cattle production. In this study, breast cancer 1 (BRCA1) and toll-like receptor 1 (TLR1) genes were taken as candidate genes for mastitis resistance. This study investigated whether BRCA1 and TLR1 genes were associated with milk production traits (daily milk yield, fat, and protein content) and somatic cell score (SCS). A total of 105 cows (25 Holstein, 48 Simmental, and 32 crossbred Holstein) were genotyped using the PCR-RFLP method. Cows with the BRCA1 c.46126G>T GG genotype had significantly lower SCS than the other genotypes. The TLR1 g.60438363C>T SNP influenced the protein content in all cows, with genotype CC having a higher content than TC. The same SNP in the Simmental breed showed that cows with the CC genotype had significantly higher SCS than the heterozygote. Cows with the GG genotype of TLR1 g.60437324A>G had significantly lower SCS and higher fat and protein content than the heterozygote. The results of this study indicate that BRCA1 c.46126G>T and TLR1 g.60437324A>G SNPs could be useful for improving mastitis resistance in dairy cattle through marker-assisted selection.

Antimicrobial properties of secondary metabolites of Cannabis sativa: A promising natural alternative for livestock healthReview

Tereza Paulová, Karel Novák, Eva Pìchouèková

Czech J. Anim. Sci., 2025, 70(9):357-382 | DOI: 10.17221/85/2025-CJAS


In addition to their practical importance as a medicinal plant, animal feed and a source of materials for the textile and construction industry, industrial varieties of Cannabis sativa L. (hemp in a wider sense) provide an alternative for controlling infectious diseases in livestock. Despite the genetic divergence between two primary groups of cannabis, i.e. medicinal cannabis and technical hemp, hemp plants also produce a wide spectrum of secondary metabolites. These include the main classes of cannabinoids and terpenoids, as well as representatives of flavonoids, stilbenoids, steroids, alkaloids, spiroindans, dihydrophenanthrenes, and lignanamides. Many of them exhibit antibiotic activity which can substitute or complement the use of traditional antibiotics in animal husbandry. For example, the cannabinoid fraction exhibits activity against the Gram-positive bacteria and some fungi. While the activity against Gram-negative bacteria is not characteristic of cannabinoids, these pathogens can still be affected by hemp terpenoids and flavonoids. The synergy among the secondary metabolite fractions or between the hemp metabolites and traditional antibiotics is also a favourable factor. The search for alternatives to traditional antibiotics is further driven by the increasing prevalence of genetically determined antibiotic resistance among veterinary pathogens, which poses the additional risk of transferring resistance traits to the human pathogens. The content of antibiotically active compounds in hemp can be enhanced through selection among existing genotypes, targeted breeding, cultivation conditions, and even by specific elicitation of secondary metabolites with the natural antibiotic function in the disease resistance of the plant. The switch to hemp metabolites is also supported by their compatibility as natural components of plant-based animal feed, and by favourable economic considerations.

Lactoferrin content determined in bovine milk by HPLC and mid-infrared spectrometry – Relation to udder health and potential for detection of milk adulterationOriginal Paper

Hana Nejeschlebová, Oto Hanu¹, Klára Bartáková, Craig Parsons, Eva Samková, Lenka Vorlová, Gavin Thompson, Lucie Hasoòová, Roman Koneèný (ORCID: 0000-0002-695

Czech J. Anim. Sci., 2025, 70(11):467-479 | DOI: 10.17221/114/2025-CJAS


Lactoferrin (LF) is a multifunctional glycoprotein linked to udder health in dairy cows. This study aimed to develop a calibration model for LF quantification using mid-infrared spectrometry (MIR-FT), with ion-pair reversed-phase high-performance liquid chromatography (HPLC) as the reference method. Two sets of individual milk samples (A: n = 120; B: n = 91) were collected from five dairy farms in the Czech Republic. Set A included a higher proportion of samples with somatic cell count (SCC) above 300 000 cells/ml to ensure broad LF variability. After merging both sets and removing six outliers, a final calibration set C (n = 205) was created. The developed model achieved a cross-validated coefficient of determination of 0.588 7 and a standard error of cross-validation of 67.33 mg/l. Correlation analysis showed that several milk parameters correlated with LF determined by MIR-FT in patterns typical of mastitis (SCC: r = 0.450; lactose: r = –0.364; free fatty acids: r = 0.621; electrical conductivity: r = 0.442), indicating potential for MIR-FT in evaluating mammary gland health. The feasibility of using LF as an indicator of milk adulteration by artificial SCC reduction through centrifugation was also assessed. Two sample sets (n = 20 and n = 68) were analysed, each containing normal bulk tank milk and bulk tank milk supplemented with abnormal milk. Centrifugation caused minimal changes in LF determined by both HPLC and MIR-FT (maximum 3.27%) while SCC decreased by nearly 50%, suggesting that LF may serve as a marker for detecting artificial SCC reduction. However, practical application of MIR-FT for accurate LF determination is limited by the achieved validation parameters and the high expanded uncertainty (114.7 mg/l). The method is therefore more suitable for monitoring relative LF changes in milk than for determining exact LF content.

Genetic parameters for foot and claw disorders in Czech Holstein cattleOriginal Paper

Ludmila Zavadilová, Eva Ka¹ná, Zuzana Krupová, Miloslava ©típková, Michaela Brzáková

Czech J. Anim. Sci., 2026, 71(1):11-20 | DOI: 10.17221/140/2025-CJAS


Our study investigated the genetic variability of specific foot and claw disorders, namely dermatitis digitalis, sole ulcer, and three broader categories (infectious diseases, claw horn lesions, and general claw disorder) in Czech Holstein cows. We also examined their genetic relationships with clinical mastitis and key fertility traits. Using both linear and threshold animal models, we concluded that heritability estimates for foot and claw disorders were consistently higher when employing the threshold model. A significant finding was the genetic correlation between sole ulcer and dermatitis digitalis, which ranged from 0.21 (calving to 305 days in milk) to 0.53 (calving to 90 days in milk). Furthermore, we observed stronger genetic correlations between clinical mastitis and overall foot and claw disorders, claw horn lesions, and infectious diseases during early lactation (calving to 90 days in milk) compared to the entire lactation period. Within this early lactation phase, the strongest genetic correlation was identified between clinical mastitis and claw horn lesions. Interestingly, our research uncovered a unique genetic link between days open and dermatitis digitalis, suggesting that a genetic predisposition to a higher occurrence of dermatitis digitalis may coincide with shorter days open. These results underscore the importance of implementing distinct genetic selection strategies for infectious claw diseases and claw horn lesions in dairy cows. This distinction is crucial due to their differing genetic correlations with other economically important traits, ultimately contributing to a better understanding of claw health genetics and its application in breeding programs.

Exploring the potential use of two species of Dioscorea in composite flours for bakery productsOriginal Paper

Martin Amador Meza-Nieto, María Guadalupe Torres-Cardona, Sergio Soto-Simental, Antonio de Jesús Cenobio-Galindo, Rubén Jiménez-Alvarado

Czech J. Food Sci., 2026, 44(1):52-61 | DOI: 10.17221/48/2025-CJFS

Dioscorea species possess valuable properties that make them suitable for use in food production. This study characterised doughs made with flours from two species of Dioscorea by evaluating their nutritional, rheological and textural properties for use in baking. Dioscorea composita flour had a higher crude fibre content (1.5% ± 0.11), while Dioscorea bulbifera flour exhibited higher antioxidant content [930.5mg GAE · (100g)–1 dry matter] and better protein digestibility (89.06% ± 0.7%). Wheat flour was substituted with Dioscorea flour (0–30%) to make composite doughs. Doughs containing D. composita exhibited superior biaxial extensibility (41.22 ± 11.9mm at 20% substitution), compared to the control (21.4 ± 2.7mm), indicating their potential for use in bread production. Meanwhile, doughs containing 20% or more D. bulbifera flour were more suitable for products such as biscuits or pitta bread. However, all composite doughs were harder to handle, likely due to gluten dilution and component interactions, regardless of the Dioscorea species used. Therefore, the Dioscorea species used in this study could be considered promising candidates for inclusion in suitable bakery products.

Seasonal and microclimate-responsive expression of VRN-A1 and VRN-B1 in wheat under field conditionsOriginal Paper

Nicole Frantová, Ilja Tom Prá¹il, Ludmila Holková

Czech J. Genet. Plant Breed., 2026, 62(2):53-63 | DOI: 10.17221/76/2025-CJGPB

The need of vernalisation, controlled by the gene VRN-1, impacts wheat adaptation and yield stability, yet field evidence on the plasticity of VRN-1 homoeologs expression is limited. We quantified VRN-1 homoeolog dynamics across two sites and two seasons in seven cultivars, by sampling their apex and leaf. VRN-A1 varied with genotype (P < 0.001***), tissue (apex > leaf; P < 0.001***), apex development (P < 0.001***), day length (P < 0.001***), and to a lesser extent, on short-term freezing exposure, quantified as a 5-day freezing-degree sum (FDS; P = 0.019*). Photoperiod class (Ppd-D1a vs Ppd-D1b) added an additional effect (P = 0.001***). VRN-B1 showed strong genotype effects (P < 0.001***), a modest effect of site on its expression (P = 0.025*), and pronounced associations with microclimate variables (day length, thermal sums, freezing exposure; all P < 0.001***). Directionally, Ppd-D1a backgrounds tended to advance the development while showing earlier apex VRN-A1 peaks. Overall, VRN-A1 expression mainly reflected developmental stage and seasonal forcing, whereas VRN-B1 might be more microclimate-responsive, indicating complementary roles for timing and stress-response plasticity. To isolate causal effects and to further explain these dynamics, targeted sequencing and tests in near-isogenic lines will be needed in future work.

Dietary levels of soluble and insoluble fibre sources for young slow-growing broilersOriginal Paper

Nayanne Rodrigues de Oliveira, Fabiana Ramos dos Santos, Maura Regina Sousa Silva, Isadora da Silva Rissato, Geyniane Carvalho Roque, Carollynne Martins Silva, Hemylla Sousa Santos Barros, Nathan Ferreira da Si

Czech J. Anim. Sci., 2024, 69(4):139-154 | DOI: 10.17221/84/2023-CJAS

This study aimed to evaluate the effects of dietary levels of soluble and insoluble fibre on the performance and digestive development of slow-growing broilers during the starter period. A total of 400 one-day-old Isa LabelTM male chicks were used that were distributed in a completely randomized factorial design 2 × 2 + 1 (inclusion of 2% or 4% of corncobs as a source of insoluble fibre IF and citrus pulp as a source of soluble fibre (SF); and a control treatment) with eight replicates of 10 birds each. The addition of IF to diets improved the weight gain and feed conversion of broilers at 7 and 21 days of age. Both fibre sources added to diets resulted in higher relative weights of proventriculus + gizzard, liver, small and large intestine. The diets containing an SF source presented positive effects on the duodenal mucosa. In addition, positive effects on the caecal villus to crypt ratio were observed in broilers fed diets containing different types of fibre. It is concluded that dietary inclusion of IF up to 4% maintains the performance, nutrient metabolism and improves the development of the proventriculus + gizzard in slow-growing broilers. However, for improving the morphological and histomorphological parameters of slow-growing broilers in the starter phase the addition of SF sources is recommended.

Impacts of exopolysaccharides producing probiotic bacteria on the physicochemical and sensory properties of fermented goat yoghurt under chilled storageOriginal Paper

Han Wu, Xiayidan Maimaiti, Ying Wang, Anthony Pius Bassey, Nurgvl Rahman, Xiaoli Liu

Czech J. Food Sci., 2024, 42(5):305-316 | DOI: 10.17221/125/2024-CJFS

This study focused on the co-fermentation of goat milk with functional lactic acid bacteria (LAB) and traditional yoghurt starter culture. The fermentation process was optimised by single factor experiment and response surface methodology (RSM). The physicochemical and sensory properties of goat milk yoghurt were evaluated under chilled (4 °C) storage for 21 days. The optimised conditions were selected as the inoculum amount of Lactobacillus paracasei NM-8 (1.1 × 107 CFU·mL–1; CFU – colony forming unit), sucrose addition (6.8%) and fermentation temperature (41 °C). During milk coagulation, the pH declined to be 4.45 and the viable LAB number arrived at 8.77 log CFU·mL–1. The content of exopolysaccharides (EPS) increased to be 2.13 g·L–1. These changes led to the better viscosity (941.33–792.33 cP) and higher water holding capacity (63.24–56.20%) of yoghurt fermented using L. paracasei NM-8 in storage, compared with those of yoghurt without L. paracasei NM-8. This study provided a theoretical basis for eliminating the whey precipitation and rough texture of goat milk yoghurt.

Effects of silymarin supplementation during late gestation on reproductive performance, haematological parameters, antioxidant status, and gut microbiota in sowsOriginal Paper

Guanglei Cong, Chunxue Liu, Shuangshuang Xia, Junbo Li, Ifen Hung

Czech J. Anim. Sci., 2025, 70(11):480-488

This study aimed to evaluate the effects of silymarin supplementation during late gestation on reproductive performance, haematological parameters, antioxidant capacity, and gut microbiota composition in sows. Twenty parity-4 crossbred sows (Landrace × Yorkshire) were enrolled and randomly allocated in parity blocks to either a control group (CG; n = 10, basal diet) or a silymarin-supplemented group (SIL; n = 10, basal diet + 200 mg/kg silymarin). The experimental period extended from day 85 of gestation to the completion of farrowing. The results demonstrated that dietary silymarin significantly reduced the number of stillbirths (P < 0.05), without exerting a significant effect on the total number and proportion of live-born piglets (P > 0.05). No notable differences were observed in haematological parameters between the two groups (P > 0.05). However, catalase (CAT) activity and total antioxidant capacity (T-AOC) were significantly elevated in the silymarin group (P < 0.05), and superoxide dismutase (SOD) showed a tendency to increase (P = 0.078). High-throughput 16S rRNA sequencing revealed 1 671 unique feature sequences in the silymarin group and 1 073 in the control group, with 1 600 sequences shared between the two groups. A trend towards increased dominance was observed in the silymarin group (P = 0.082), while both the Shannon and Simpson indices tended to decline (P = 0.087; P = 0.082), suggesting a possible reduction in microbial diversity. Principal coordinate analysis (PCoA) of β-diversity revealed significant structural differences in gut microbiota between the two groups. SIMPER analysis identified Terrisporobacter as the principal genus contributing to these differences. In conclusion, silymarin supplementation during late gestation may enhance reproductive outcomes in sows, potentially through modulation of gut microbial composition and enhancement of systemic antioxidant status.

Can sustainable practices optimise fertiliser use and economic efficiency? A micro-panel analysisOriginal Paper

Faruque As Sunny, Juping Lan, Mohammad Ariful Islam

Agric. Econ. - Czech, 2026, 72(1):1-18 | DOI: 10.17221/473/2024-AGRICECON

The intensification of agricultural practices in Bangladesh has caused significant environmental challenges. This has also undermined farmers' economic sustainability, mainly due to the excessive use of subsidised chemical fertilisers. To address these issues and align with the United Nations Sustainable Development Goals (SDGs), Bangladesh has prioritised the adoption of sustainable farming practices, including the recommended fertiliser application (RFA). However, whether the adoption of RFA ensures economic sustainability remains uncertain. This study evaluates how the Bangladesh Rice Research Institute's (BRRI) proposed RFA affects fertiliser use and cost-efficiency. Drawing on five years (2017–2021) of panel data from 2 025 households across three acidic soil regions in Dinajpur, the findings reveal that RFA adoption reduces fertiliser use by 12% while improving cost efficiency by 4.9–5.1%. These results highlight the potential of RFA to mitigate environmental degradation while enhancing economic outcomes, thereby supporting the SDG agenda. In light of these benefits, the study offers key insights for policymakers and development practitioners, emphasising the need for targeted interventions to accelerate RFA adoption and promote sustainable agriculture.

Establishment of an experimental pig model for the induction of a Staphylococcus hyicus skin infectionOriginal Paper

K Matiaskova, M Reichelova, E Jeklova, M Zouharova, S Kobzova, K Nedbalcova, J Matiasovic, M Faldyna

Vet Med - Czech, 2026, 71(3):83-94 | DOI: 10.17221/68/2025-VETMED

Staphylococcus hyicus is one of the causative agents of exudative epidermitis in pigs. The aim of this study was to establish a porcine challenge model of a skin infection caused by S. hyicus to assess the effectiveness of a medicinal product intended for local application. Based on the results of the presence of toxin encoding genes and antimicrobial resistance (detected resistance to clindamycin, penicillin, ampicillin, erythromycin and tetracycline), three field strains were selected for the trial. At D0, six surface defects were created on the back of six piglets. The defects were inoculated with bacteria at two different concentrations: 1 × 108 or 1 × 109 CFU/ml. Every day throughout the experiment, the pigs were monitored, and their rectal temperatures were measured. On D4, D9, and D14, a visual evaluation and indirect bacteriological imprints of the defects were performed. Crusts were present from D9, and a lower bacterial concentration led to reduced secretion and crust formation. Based on the results of bacterial cultivation of the indirect imprints, however, S. hyicus was present in greater amounts in the wound defects infected with the lower bacterial concentration. As there were differences in the obtained results among the strains used, it can be concluded that the strain marked as CAPM 6689 seems to be the most applicable and the lower concentration was enough for the infection development.

Dairy bull sperm subpopulation behaviour in frozen-thawed semen across breed, temperature, and thawing timeOriginal Paper

F Sevilla, I Araya-Zuniga, JM Solis, C Corcini, P Cervantes-Acosta, A Hernandez-Beltran, R Molina-Montero, D Pichardo-Matamoros, A Valverde (email: anvalverde@te

Vet Med - Czech, 2026, 71(1):1-9 | DOI: 10.17221/56/2025-VETMED

Optimising dairy cattle reproduction with assisted reproductive technologies, such as artificial insemination, requires standardised semen handling and analysis. This study evaluated the kinematic structure of the spermatozoan subpopulation in frozen-thawed Holstein and Jersey bull semen doses under different thawing protocols. We used frozen semen doses taken from four bulls of each breed. Nine semen doses were collected from each animal, for a total of 72 cryopreserved doses. Straw thawing was performed at three temperatures (35 °C, 37 °C, and 40 °C) and three times (30 s, 40 s, and 45 s). Sperm kinematic patterns were evaluated using a CASA-mot system (ISAS®v1). Sperm kinematic variables for each breed, temperature, and thawing time identified four subpopulations. The analysis revealed an effect of breed and semen thawing protocols (P < 0.05) on sperm subpopulation distribution, sperm movement, and swimming patterns. Subpopulation analyses based on semen assessment are needed to further interpret the relevance and effect on fertility.

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.

Change in forest species composition and its projections into the economy of forest ownersOriginal Paper

Václav ©ebek, Václav Kupèák, Andrea Janáková Sujová

J. For. Sci., 2024, 70(7):368-380 | DOI: 10.17221/21/2024-JFS

Increasing the proportion of broadleaved trees in stands during regeneration raises questions about how these trees will be reflected in the economics of forest owners and whether these owners can influence certain economic aspects during stand management. In this respect, the paper focuses mainly on the revenue side of forestry and, crucially, analyses the selling prices of assortments of tree species groups as offered in public tenders of state forests under the outsourcing business model. The price level of spruce is used as a benchmark for comparisons in the analyses. It is clear that the cultivation of species-diverse forests entails an increase in the representation of a higher number of tree species and, presumably, increased stand stability. However, a concomitant consequence may be an increase in costs and a reduction in returns for forest owners. Here, the revenue from timber sales can be improved by appropriate adjustment of the species composition through educational interventions. All this is in the context of the economic viability of forestry, as declared in a number of strategic and forest policy documents, which essentially depends on the timber production function of forestry and the subsequent processing of timber.

Critique on the dipteran pests of commercial flower crops: An obligate threat to the floral industryReview

Babu Babu Sreelatha Anand, Kanna Selvaraj Suganya, Chinnaiah Muthiah, Jacob Rajangam, Subramanian Rajesh, Ramayya Nalini, Angappan Suganthi

Plant Protect. Sci., 2024, 60(4):328-353 | DOI: 10.17221/29/2024-PPS

The floral industry grapples with challenges like changing climatic scenarios, differences in market trends, rising costs, and severe losses posed by insect pests. The management of dipteran pests encompassing diverse species, such as leaf miners, midges, flies, and mosquitoes, has emerged as an obligate adversary, inflicting substantial economic losses in the cut and loose flower industry. Through a comprehensive analysis of existing literature, this paper delves into the diverse array of dipteran species of leaf miners and midges, their life cycles, distribution, host range, damaging symptoms, insecticide resistance, and the management strategies practised to date. Furthermore, this critique underscores the urgent need for innovative approaches and integrated pest management techniques to mitigate the escalating menace of dipteran pests. By elucidating the multifaceted challenges and proposing strategic interventions, this critique aims to foster dialogue and inspire concerted action among researchers, stakeholders, and scholars to safeguard the sustainability and profitability of the floral industry.

Indebtedness of small and medium-sized wineries in SlovakiaOriginal Paper

Jana Ladvenicová, Dominika Èeryová, Iveta Ko¹ovská, Jozef Palkoviè, Matej Èere¹

Agric. Econ. - Czech, 2025, 71(1):27-45 | DOI: 10.17221/31/2024-AGRICECON

Many companies depend on debt sources; they use them to finance their needs. Bank loans are the main debt sources to which companies have access. However, financing only with this source is associated with many risks. The paper’s main goal is to assess and quantify the indebtedness of wineries in Slovakia for 2013–2021 through individual debt ratios. The influence of financial leverage on return on equity (ROE) was tested. The data were drawn from the Register of Financial Statements. From the point of view of the total debt ratio, wineries show values higher than 65%. The presence of short-term debts, especially short-term liabilities, prevailed. The average share of equity reached a very low value of 11%. The average share of bank loans on financing operating activities was very low at the level of 8.53%. The return on assets (ROA) was lower than the cost of debt in most wineries, which means that increasing indebtedness had a negative effect on ROE.

Cryptosporidium parvum screening in young calves with diarrhoea in Sulaymaniyah Governorate, IraqOriginal Paper

S Abdulqader, A Kaya, H Marif, B Ali, D Ismaeel

Vet Med - Czech, 2025, 70(2):45-53 | DOI: 10.17221/60/2024-VETMED


The parasitic protozoan Cryptosporidium parvum causes cryptosporidiosis in young calves, leading to diarrhoea and financial losses in the farming industry. This study aimed to examine the occurrence of C. parvum in preweaning calves suffering from diarrhoea in Sulaymaniyah, Iraq, using both enzyme-linked immunosorbent assay (ELISA) and polymerase chain reaction (PCR) methods. Faecal samples were obtained from 80 young calves categorised into various groups according to age, breed, sex, and geographic origin. Notably, a greater occurrence of C. parvum infection was observed in female calves, those in the 5–30 days age group, and those of the Friesian breed. Furthermore, the highest infection rate was reported in the Zarayan region. A strong correlation was observed between the ELISA and PCR findings. The molecular analysis detected both C. parvum and C. ryanae, with C. ryanae documented for the first time in Iraq. C. parvum infection considerably affects physiological indicators, particularly in younger calves, including body temperature, heart rate, and respiratory rate. PCR positivity in our study was substantially correlated with dehydration. Overall, this study highlights the need for prompt identification and intervention for the management of C. parvum infections in young calves.

The role of spent coffee ground extracts as natural antioxidant supplements in the diet of Nile Tilapia (Oreochromis niloticus)Original Paper

Khamanitjaree Saripan, Urailuck Pongket, Suriya Udduang, Supalug Kattakdad

Czech J. Anim. Sci., 2025, 70(6):242-252 | DOI: 10.17221/29/2025-CJAS

This study evaluated the potential of spent coffee grounds extract (CGE) as an antioxidant supplement in the diet of Nile tilapia (Oreochromis niloticus). Four experimental diets with varying CGE levels were formulated: 0% (CGE0, control), 2% (CGE2), 4% (CGE4), and 6% (CGE6). Nile tilapia (initial mean body weight = 38.65 ± 0.85 g) were cultured in fiberglass tanks at a stocking density of 20 fish/m2 under continuous aeration. The fish were fed three times daily at 5% of their total body weight. After an 8-week experimental period, the fish fed CGE-supplemented diets exhibited significantly higher growth rate compared to the control group, with CGE4 showing the most pronounced improvement in final body weight (P = 0.027) and weight gain (P = 0.050). However, no significant differences were observed in average daily growth (P = 0.054), specific growth rate (P = 0.256), survival rate (P = 0.487), and feed conversion ratio (P = 0.105) between the dietary treatments. Fish on the CGE6 diet exhibited the highest total plasma protein (P = 0.001) and immunoglobulin levels (P = 0.000). Moreover, CGE supplementation enhanced superoxide dismutase (P = 0.000) and glutathione peroxidase (P = 0.016) activities relative to the control group. The histopathological analysis showed significantly longer intestinal villi in fish fed CGE-supplemented diets, with the longest villi observed in the CGE6 group (P = 0.000). Fish fillets from the CGE6 group exhibited the highest springiness, while hardness was comparable between CGE6 and CGE4 but significantly higher than in CGE2 and CGE0. Additionally, CGE supplementation significantly influenced the colour expression, increasing lightness (L*) while decreasing redness (a*) and yellowness (b*) values. These findings indicate that 4% CGE supplementation is the most effective concentration, as it significantly promotes growth as evidenced by the highest weight gain, while also enhancing blood biochemical parameters, flesh quality, and antioxidative responses in Nile tilapia.

Long-term effects of organic and mineral fertilisation on soil manganese dynamics and agricultural sustainabilityOriginal Paper

Sarfo Kwaku Obeng, Martin Kulhánek, Jiøí Balík, Jindøich Èerný, Ondøej Sedláø

Plant Soil Environ., 2026, 72(3):155-164 | DOI: 10.17221/562/2025-PSE

Manganese (Mn) is often underestimated in plant nutrition. Its availability to plants is influenced by several factors, which can lead to Mn deficiency or toxicity. The objective was to evaluate the transformation of soil Mn over 21 years in a long-term field experiment. Fertilising with (i) sewage sludge 1 (SS1); (ii) sewage sludge 3 (3 times higher nitrogen (N) dose, SS3); (iii) farmyard manure (FYM); (iv) mineral nitrogen, phosphorus and potassium (NPK) and (v) mineral nitrogen in addition to straw (Nst) was studied to evaluate the transformations of Mn in soil using different extraction methods at the 5 locations. There was a general reduction in the pH during the experiment. Soil acidification caused by mineral N fertiliser increased the bioavailable Mn forms under NPK treatment. This Mn was mobilised from soil reserves, leading to depletion of Mn sources. Application of SS and FYM led to an increase in non-bioavailable Mn fractions, while the expected increase in biologically available Mn was not observed. As the high pH of soil limits Mn availability, foliar Mn application can be recommended for agricultural practice in high-pH soils. On the contrary, liming can be recommended for low-pH soil with high bioavailable Mn content to mitigate the risk of Mn toxicity.

Genetic diversity and population structure of a Creole sheep flock from UruguayOriginal Paper

Beatriz Carracelas, Pablo Peraza, Brenda Vera, Silvia Llambi, Gabriel Ciappesoni

Czech J. Anim. Sci., 2025, 70(5):173-182 | DOI: 10.17221/93/2024-CJAS


Since 2020, the National Agricultural Research Institute (INIA) has conserved a Creole sheep flock at INIA Las Brujas. This study genetically characterised this population and compared it with six others: San Miguel National Park Creoles, commercial farms Creoles, Brazilian Creoles, Corriedale, Merilin and Soay sheep. The analysis included 628 individuals and 31 392 autosomal SNPs. Soay and San Miguel National Park Creoles exhibited the lowest genetic diversity (Ho = 0.266 and 0.279) and highest inbreeding (FHOM: 0.283 and 0.249; FROH: 0.199 and 0.202). Merilin and Corriedale showed the highest genetic diversity (Ho = 0.351 and 0.364), while Brazilian Creoles had the highest Ho (0.327) among Creoles. Short runs of homozygosity (ROH) segments (≤4 Mb) predominated, with San Miguel National Park and INIA Las Brujas Creoles exhibiting the highest numbers of ROH (22 773 and 16 762, respectively). Fixation index (Fst) and Reynolds distances highlighted INIA Las Brujas Creoles and Soay as the most distinct (0.318 and 0.321, respectively). INIA Las Brujas Creoles also showed notable differentiation from San Miguel National Park Creoles (Fst = 0.269; Reynolds = 0.272). Principal component analysis (PCA) revealed clear clustering, with Corriedale and Merilin closely related (Fst = 0.060; Reynolds = 0.068). Admixture analysis indicated distinct ancestries for Soay, Corriedale and San Miguel National Park Creoles, while commercial and Brazilian Creoles showed significant admixture. INIA Las Brujas Creoles exhibited a distinct ancestry with traces of Corriedale. Phylogenetic analysis confirmed the divergence between Creole and Corriedale/Merilin populations. Results suggest the historical genetic exchange among INIA Las Brujas Creoles, Corriedale, and commercial farms Creoles, while high differentiation of San Miguel National Park Creoles reflects their closed status since 1929.

Degradation of Betula spp. under the influence of biotic factors in the forests of Ukrainian PolissiaOriginal Paper

Ivanna Kulbanska, Maryna Shvets, Svitlana Matkovska, Tetiana Melnyk, Vasyl Zayachuk, Nataliya Horbenko, Oleh Zymaroiev, Anastasiia Zymaroieva

J. For. Sci., 2026, 72(3):148-160 | DOI: 10.17221/96/2025-JFS


The paper examines the impact of biotic factors – mainly pests and pathogens – on the degradation of Betula spp. in the forests of Ukrainian Polissia. The taxonomic structure of the identified mycobiota includes representatives of 9 genera, 8 families, 5 orders, 4 classes, and two divisions (Ascomycota 44.4%, Basidiomycota 55.6%). Xylotrophic Basidiomycetes, particularly Fomitopsis betulina and Fomes fomentarius, pose the greatest threat due to their ability to destroy wood tissues. The bacterial pathogen Lelliottia nimipressuralis, the agent of wetwood, also plays a major role, impairing xylem water transport and causing systemic physiological imbalance in affected trees. Entomofauna significantly contributes to degradation processes. A total of 31 insect species were recorded, belonging to five orders, 24 families, and 29 genera, with Coleoptera being the most numerous (32.3%). The most harmful are xylophagous species (e.g. Agrilus betuleti, Rhagium mordax) and phytophagous species (e.g. Geometra papilionaria, Parornix betulae), which cause mechanical tissue damage and facilitate secondary infections. The results indicate that pathogenic complexes intensify under environmental stress, accelerating the decline of Betula spp. stands. These findings underscore the necessity for ongoing phytosanitary monitoring and adaptive management measures to mitigate further degradation risks in the birch forests of Polissia.

Episiectomy and partial vaginectomy with urethroplasty for excision of vulvar mast cell tumour in a female dogCase Report

DL Santos, JF Chaves, MP Souto, GMM Lima, JS Siqueira, SS Sousa, GS Silva, MAO Moura, PS Ribas, K Schwanke, PS Bezerra Junior, PPM Teixeira

Vet Med - Czech, 2021, 66(3):121-126 | DOI: 10.17221/94/2020-VETMED

This case report describes the surgical treatment of a grade II mast cell tumour in the vulvar region of a 4-year-old female Miniature Pinscher dog. The patient weighed 2 kg, and the tumour measured 2 cm in diameter. The surgery involved an episiotomy, a partial vaginectomy, and a subsequent urethroplasty. Due to the patient's small size, the surgical margins were set at 2 cm laterally and 2 cm deep, which meant that the entire vulva, as well as the ventral part of the vaginal canal had to be removed. Afterwards, the urethral ostium was elliptically fixed to the skin at the end of the urethroplasty. The follow-up evaluations revealed an excellent recovery without metastasis or recurrence over the following two years.

Nitrogen application rates mediate rice cooking quality by interfering with root anatomical and senescence physiological traitsOriginal Paper

Li Wang, Jing Cao, Hao Cheng, Qinyao Meng, Haojing Li, Guowei

Plant Soil Environ., 2026, 72(3):172-193 | DOI: 10.17221/20/2026-PSE

Nitrogen fertiliser is a key determinant of rice yield and grain quality; however, the synergistic mechanisms through which nitrogen regulates root anatomical structure, physiological traits, and cooking quality in rice varieties with different eating properties remain unclear. In this study, a pot experiment was conducted using two moderate-eating-quality cultivars (Xudao 3 and Huageng 9) and two superior-eating-quality cultivars (Zhengdao C42 and Nangeng 9308) under four nitrogen levels (0, 0.59, 1.18, and 1.76 g/pot, designated as N0, N1, N2, and N3, respectively). Cooking quality was assessed by amylose content, gel consistency, and alkali spreading value. The results demonstrated that, with increasing nitrogen application, amylose content, alkali spreading value, malondialdehyde (MDA) content, root aerenchyma area, and aerenchyma proportion decreased initially, then increased, reaching their lowest values at the N2 level. In contrast, gel consistency, root antioxidant enzyme activities (SOD, POD, CAT), photosynthetic rate and cortical living cell proportion increased first and then decreased, peaking at N2 treatment. Compared with moderate-eating-quality varieties, superior-eating-quality varieties exhibited significantly lower amylose content, alkali spreading value, MDA content, and aerenchyma proportion, but higher gel consistency, living cell proportion, stele-to-root diameter ratio, antioxidant enzyme activities, and photosynthetic rate. Correlation analysis revealed that root antioxidant enzyme activities, stele diameter and living cell proportion were negatively correlated with amylose content, but positively correlated with gel consistency. Conversely, MDA content, aerenchyma area and aerenchyma proportion showed opposite correlation patterns. These findings indicate that an appropriate nitrogen application rate (1.18 g/pot) enhances root physiological activity, optimises root anatomical structure, and ensures sufficient source supply to the grain sink, thereby synergistically improving cooking quality – an effect particularly pronounced in high-eating-quality rice varieties.

Multi-objective optimisation and synergistic mechanisms of expansive soil improvement using organic fertiliser, slow-release fertiliser, and rice strawOriginal Paper

Yonggang Huang, Hongri Zhang, Xinzhong Wang, Yuexing Wu, Xianliang Tan, Kang Xiong

Soil & Water Res., 2026, 21(1):20-33 | DOI: 10.17221/47/2025-SWR

This study systematically investigated the synergistic improvement of expansive soil using organic fertiliser (OF), slow-release fertiliser (SRF), and rice straw (RS) through Box-Behnken design (BBD) and response surface methodology (RSM). Key findings include: the quadratic models demonstrated high statistical significance (root density: R² = 0.765, F = 25.84; shear strength: R² = 0.885, F = 18.65; swelling rate: R² = 0.20, F = 15.23; all P < 0.001) with low prediction errors (root content: ± 0.08 mg/cm3; shear strength: ± 0.58 kPa; swelling rate: ± 0.38%); The combination of 12.30% OF + 0.7 kg/m3 SRF + 0.4% RS achieved 58% improvement in shear strength, 32% improvement in root content, 42.7% reduction in swelling rate; OF exhibited negative linear effects on root density (β = – 0.18, P = 0.002) with >10% dosage reducing root growth by 9.0%; SRF showed positive linear impacts on shear strength (β = +0.25, P = 0.001) and root density (β = + 0.12, P = 0.023); RS enhanced shear strength below 0.5% (β = + 0.08, P = 0.042) but impaired root density due to pore clogging (β = – 0.15, P = 0.008). The optimised formulation, validated by triplicate centre-point tests (coefficient of variation ≤ 2.1%), is recommended for slope stabilisation while limiting OF to ≤ 10% to prevent performance degradation. This data-driven approach provides actionable insights for balancing agricultural waste utilisation and geotechnical performance in expansive soil improvement.

Effect of dietary administration of Mentha piperita alone and in combination with Artemisia abrotanum on growth performance, body composition, physicochemical properties and amino acid composition of meat in Eimeria-challenged broilersOriginal Paper

David Zapletal, Martina Kos»uková, Lenka Rozsypalová, Vlastimil ©imek, Franti¹ek Je¾ek, Josef Kameník, Radka Dob¹íková

Czech J. Anim. Sci., 2026, 71(2):67-78 | DOI: 10.17221/173/2025-CJAS


This study aimed to evaluate the effects of dietary administration of peppermint (Mentha piperita) alone and in combination with southernwood (Artemisia abrotanum) on performance, body and carcass composition, physicochemical characteristics, and amino acid composition of breast meat in broilers under Eimeria challenge. A total of 160 14-day-old male broilers (Ross 308) were randomly assigned to four dietary groups: the control (C) group was fed a basal diet; the CC group received a grower diet containing the coccidiostat robenidine; the M group was fed the diets with the addition of 20 g peppermint/kg of diet; the MS group was fed the diets with the addition of 10 g peppermint + 10 g of southernwood/kg of diet. The addition of peppermint to the diet increased final live weight compared to the CC group (P < 0.05). The highest value of dressing percentage was found in the M group as compared to the CC group (P < 0.01) and C group (P < 0.05). Compared with the C group, a higher intramuscular fat content was found in the breast meat of broilers in both the M and MS groups (P < 0.01; P < 0.05, resp.). Concerning the colour of meat, lower values for yellowness b* and chroma C* characteristics were observed in the C group compared to the MS group (P < 0.05) and mainly to the M group (P < 0.01). In spite of the lower crude protein content (P < 0.05) in the meat of the MS group, the highest content of all essential amino acids (P < 0.05) as well as the total content of all assessed amino acids (P < 0.01) were found in the meat of the MS group, resulting in a considerable increase in the nutritional value of the breast meat proteins of these broilers.

The effects of temperature on biogas production rate and purityOriginal Paper

Romeica Noe Rimorin, Christian Mark Felix, Roger Jay Lamadrid De Vela

Res. Agr. Eng., 2026, 72(1):70-79 | DOI: 10.17221/104/2025-RAE


This study investigated the effects of temperature on the performance of anaerobic digesters for biogas production. Digesters were filled with a 1 : 1 ratio of substrate to water, containing 15 kg of cow dung and 3 kg of crop waste, and maintained at temperatures of 50 ± 2 °C and 30 ± 2 °C, corresponding to the thermophilic and mesophilic biodigesters, respectively. The experiments run for 75 days, and biogas production rate and purity were measured. The thermophilic digester produced 48.4% more biogas and had a slightly higher pH (7.65) than did the mesophilic digester (7.37) by the end of the observation period. However, gas chromatography revealed that the CH4 and CO2 contents did not significantly differ between the two treatments. The CH4 concentration in the mesophilic environment was 42 ± 10%, whereas that in the thermophilic environment was 53.5 ± 10%. The CO2 composition was 32.5 ± 1% and 35.5 ± 1% for the mesophilic and thermophilic setups, respectively. These were supported by the wavelength (460 nm to 620 nm) of the flame colour, indicating that the biogas from both setups is predominantly composed of methane. In conclusion, thermophilic anaerobic digesters may have a relatively high biogas production rate, but the biogas purity is not significantly different from that of mesophilic digesters.

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