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Results 451 to 480 of 4598:

Impact of proofing and baking parameters on B complex vitamins retention of Arabic flatbread produced from wheat flour with different extraction ratesOriginal Paper

Ashraf M. Al-Khamaiseh, Mohammad H. Shahein, Yanal Albawarshi, Ayed Amr

[Ahead of Print]CAAS Agricultural Journals, X:X | DOI: 10.17221/145/2024-CJFS

Extensive research studies worldwide have discussed and analysed the effect of processing conditions on the nutritional aspects of Western types of bread; however, the literature on Arabic bread processing is very limited. This study aims to determine the effect of baking temperature and time on the retention of B vitamins in a pocket-forming Arabic flatbread model system. High-crumb flat Arabic bread (Thick Kmaj) was prepared by the straight dough method from three types of flour (patent, straight grade, and whole wheat) fortified with B vitamins. Doughs were fermented and proofed for 0, 30, 60, and 90 min and baked at five temperatures (250, 300, 350, 400, and 450 °C) for three different baking times (1, 2, and 3 min). Baking at lower temperatures (i.e. < 300 °C) resulted in higher B-complex vitamin retention values (more than 90%). Vitamin B6 showed exceptional retention values (about 100%), though these decreased by increasing the baking temperature. Vitamin retention levels in the produced Arabic bread samples are similar to those found in pan and other high-crumb bread types when baked at lower temperatures. Results are expected to positively impact the output and economics of the flour fortification process, as it can be helpful material for upcoming micronutrient survey studies to assess fortification process outcomes.

Subsidy policies for the grain supply chain considering postharvest loss of grain and agricultural pollutant emission in ChinaOriginal Paper

Pan Liu, Bin Zhao, Haodong Tang, Jiamin Zhu

Agric. Econ. - Czech, 2024, 70(5):207-225


To reduce agricultural pollutant emission (APE) and postharvest loss of grain (PHLG), the Chinese government enacted a series of subsidy policies; however, the profit-oriented supply chain members are seriously lacking or reducing APE and PHLG efforts. To address this issue, we considered as the research objective a grain supply chain consisting of a producer, a retailer and the government. We proposed the concept and functional expressions of supply chain members’ reduction efforts for APE and PHLG. We then proposed two main variables: the environmental innovation subsidy coefficient and the quantity attenuation factor of grain. According to the actual situation, four investment subsidy models were proposed. The results showed the following: i) supply chain members’ equilibrium prices and incomes were negatively correlated with the degree of the producer’s APE effort regardless of whether the supply chain members were investing in PHLG technology; ii) when the government subsidises APE and PHLG technology for other supply chain members, the government should stop subsidising the retailer’s inputs in reduction loss technology to ensure that the government’s own interests are not damaged; iii) the government’s income was restricted by the degree of its subsidising of other supply chain members. This study provides a theoretical support for the government to formulate appropriate policies to reduce APE and PHLG, which is important for maintaining national food security.

Variations in bog bilberry fruit characteristics along an altitudinal gradient on Changbai Mountain, ChinaOriginal Paper

Jinhang Li, Qige Qi, Qichang Zhang, Meng Wang, Yichen Liu, Xinyu Sun, Yuting Mu, Chunlei Yang

Hort. Sci. (Prague), 2025, 52(2):111-119 | DOI: 10.17221/147/2023-HORTSCI

To better understand the influence of altitude on fruit characteristics of bog bilberry (Vaccinium uliginosum L.), here we investigated the adaptation of its fruit morphological and chemical traits to the environment at six growing positions along an altitudinal gradient (706, 957, 1 226, 1 315, 2 000 and 2 190 m) on the northern slope of Changbai Mountain, China. Fruit longitudinal diameter, fruit transverse diameter and fruit weight decreased significantly with increasing altitude. Vitamin B1 content reached its highest at 2 190 m, while both vitamin B2 and vitamin C contents reached their highest and lowest at 1 226 and 706 m, respectively. Anthocyanin content and DPPH (1,1-diphenyl-2-picrylhydrazyl) free radical scavenging ability initially decreased and then improved with increasing altitude. We observed a highly significant (P < 0.001) negative correlation between external fruit quality traits (fruit length, diameter and weight) and internal fruit quality traits (vitamins B1, B2, C and anthocyanin), and found that environmental factors significantly influenced fruit characteristics. Taken together, we concluded that on the northern slope of Changbai Mountain, bog bilberry fruits were larger at low altitudes, fruits at mid altitudes contained higher vitamins B2 and C, while high altitude (especially at 2 190 m) was beneficial for vitamin B1, anthocyanin, and DPPH free radical scavenging ability.

Effect of surface-applied compost on soil propertiesOriginal Paper

Markéta Miháliková, Kamila Bá»ková, Petr Dvoøák, Recep Serdar Kara, Cansu Almaz, Martin Král, Barbora Badalíková, Kvìtu¹e Hejátková, Vladimír Ma¹án, Patri

Soil & Water Res., 2025, 20(2):71-83 | DOI: 10.17221/148/2024-SWR

The positive influence of surface compost application without incorporation on soil physical properties is known but remains underexplored. This study evaluated the effects of surface-applied stable and mature compost on basic soil physical and chemical properties, including saturated hydraulic conductivity, aggregate stability, and penetration resistance. Conducted as a semi-operational field experiment in two Czech agricultural sites (A: Blatnice at Jaromìøice and B: Jevíèko; Cambisols with loam and silty clay loam textures, respectively), the plots were treated with compost (SCA) at rates of 4 × 30 t/ha (A) and 1 × 200 t/ha (B) or left untreated as controls (CON). The crops were wheat (A), maize (A, B) and intercrops. Surface compost application began in 2022, and soil sampling and field measurements were conducted during the 2023 and 2024 growing seasons. Results showed significant positive changes (P < 0.05 or lower) in SCA plots compared to CON. Soil organic matter content increased by 27.8% at locality A and by 58.1% at locality B, while saturated water content increased by 5.3% (A) and 11.0% (B) in the latter season. Similarly, pH and electrical conductivity showed increases. Water-stable aggregate ratios increased by 6% to 30% at both localities. Dry bulk density decreased by 10.5% (A) and 15.7% (B). Improvements in saturated hydraulic conductivity (by 28.6%) and penetration resistance were observed only at locality B. These findings show the potential of surface-applied stable and mature compost to enhance soil properties effectively.

Pedigree analysis of the Latvian Warmblood horse heavy type populationOriginal Paper

Viktorija Nikonova, Daina Jonkus, Liga Paura

Czech J. Anim. Sci., 2024, 69(11):462-469 | DOI: 10.17221/147/2024-CJAS


A breeding program has been developed for the Latvian warmblood heavy type horses in Latvia, with the aim to preserve this type, because the number of these horses is small and the status of the local endangered breed has been granted. The aim of the study was to analyse the genetic structure, inbreeding and effective population size of the Latvian warmblood heavy type (LSB) horse population. Horses that were living at the time of the study on January 1, 2023 were used for the study. A total of 374 genetic resources live horses were analysed. Population structure analysis, inbreeding and effective population size were investigated. Calculations were done by POPREP (v1.0) software. The effective population size (Ne) decreased, however, since 2018 the decline in the size of the effective population has not been so rapid. In 2000, the Ne was 316 animals, and in 2020, it was 101 animals. Over the years, changes in the average inbreeding level in the LSB population were observed from year to year. In 2000, inbreeding was 1.39%, and in 2020 it was 1.47% with the average inbreeding level of 1.12%. Over the last 20 years, large changes in Ne have been observed, thus, the loss of genetic diversity in the LSB breed should be controlled.

Association between polymorphism within rabbit IGF1 gene and slaughter weight in Termond White rabbitsOriginal Paper

Anna Migda³, Sylwia Ewa Pa³ka, Micha³ Kmiecik, Olga Jarnecka, Ewelina Semik-Gurgul, £ukasz Migda³

Czech J. Anim. Sci., 2025, 70(1):33-41 | DOI: 10.17221/59/2024-CJAS

Growth traits belong to the most important economic traits in livestock. One of the genes involved in vertebrate growth and development is insulin-like growth factor 1 (IGF1). Therefore, in our study we hypothesised that within the sequence of rabbit IGF1 gene it is possible to identify a polymorphism that may influence growth, carcass or meat traits in rabbits. We identified 6 polymorphisms (g.89259430T>C; g.89259338C>G; g.89259328T>C; 89210029A>G; 89210349C>G and g.89194199C>T) within introns of the IGF1 gene. One polymorphism, g.89194199C>T, was analysed using polymerase chain reaction high-resolution melting (PCR-HRM). We performed the association analysis on 370 animals (males to females 1 : 1) of different breeds: New Zealand White × Flemish Giant crossbreds (NZW × FG), Termond White (TW) and Flemish Giant (FG). Results showed that for growth and slaughter traits in TW populations a significant association (P = 0.003) was found for slaughter weight (SW) when CT genotypes showed significantly higher values compared to CC genotypes (2 878.0 g ± 107.0 and 2 678.0 g ± 34.0, respectively). For TW rabbits we found a significant association (P = 0.009) for dissected bone weight in hind leg (HB) when CT genotypes (127.0 g ± 5.8) had significantly higher values compared to CC genotypes (112.0 g ± 2.4). For carcass traits and physical characteristics of meat we found for musculus longissimus lumborum in TW rabbits that the b* parameter value 45 min after slaughter was significantly higher (P = 0.001) for CT genotypes (1.88 ± 0.05) compared to CC genotypes (0.05 ± 0.02). We conclude that the use of identified SNP in breeding may be limited to some breeds.

Cor triatriatum sinister with partial atrioventricular septal defect in a catCase Report

W Go, W Park, G Hwang, S An, HC Lee, TS Hwang

Vet Med - Czech, 2025, 70(3):110-115 | DOI: 10.17221/91/2024-VETMED

A 6-year-old female neutered Turkish Angora cat was referred due to tachypnoea. The patient was diagnosed with cardiomegaly at a local hospital during a health screening two years ago. Tachypnoea occurred one year ago. On physical examination, the patient presented with a respiratory rate of 72 breaths per minute and a systolic blood pressure of 70 mmHg. Thoracic radiographs revealed severe cardiomegaly, left atrium (LA) enlargement, right atrium (RA) enlargement, right ventricular enlargement, and dilation of pulmonary arteries and veins. An alveolar pattern was identified in the right and left cranial lung lobes. Echocardiography revealed a membrane that divided the LA into two chambers, a defect in the lower atrial septum, and elongation of anterior or posterior tricuspid valves (TV). However, septal TV was not observed. During systole, blood flow from LA to RA was confirmed through a defect in the atrial septum. During diastole, blood flow from LA to left ventricular was confirmed. These findings suggest cor triatriatum sinister (CTS) with partial atrioventricular septal defect (AVSD). This report describes echocardiographic diagnosis of CTS with partial AVSD in a cat.

Allogeneic adipose MSCs and autologous PRP for chronic non-healing wound in a catCase Report

N Suwan, S Jenjittikul, R Tiratrakoonseree, C Jiradanaipat, S Teerawongsuwan, Wi Phathomrapeepong, W Phanwanich, R Rungsiwiwut

Vet Med - Czech, 2025, 70(4):143-149 | DOI: 10.17221/93/2024-VETMED

Management of chronic non-healing wounds in cats requires a comprehensive approach. This report describes the treatment of a severe open skin wound on the skull using a combined approach involving allogeneic adipose-derived mesenchymal stem cells (MSCs) and autologous platelet-rich plasma (PRP). A 12-year-old neutered male mixed-breed domestic cat presented with a non-healing chronic wound on the skull. The wound extended from the orbital to the occipital area and from the left to the right temporal region. Laboratory test results were positive for feline immunodeficiency virus and impaired kidney function. Sensitivity tests revealed resistance to several antibiotics. Due to limited skin reconstruction options, MSCs were administered subcutaneously at the wound edge once a month for three months. PRP was collected one month after the initial MSC administration and injected at the wound edge monthly between MSC treatments. The wound diameter was measured daily during saline cleaning. The cat received protein-supplemented food daily. Wound healing was observed two weeks after the MSC administration, gradually decreasing in size and closing completely within 5 months. This case demonstrates the successful application of MSCs and PRP for treating chronic wounds in cats.

Effects of low-protein diet supplemented with exogenous protease on growth performance and intestinal health of broiler chickensOriginal Paper

Xin Hao, Guifeng Zhang, Yilin Ge, Jie Wang, Weiren Yang, Lijie Yang

Czech J. Anim. Sci., 2025, 70(4):147-159 | DOI: 10.17221/18/2025-CJAS

This experiment was conducted to study the effects of low-protein diet supplemented with exogenous protease on performance and intestinal health of broilers. A total of 560 one-day-old male Arbor Acres broiler chickens were randomly divided into 5 treatments with 8 replicates (12 birds per replicate) in a completely randomised design. The treatments were as follows: (1) maize-soybean meal basal diet (CON); (2) negative control with crude protein being 1% lower than in CON (NCON); (3) NCON + 12 000 U/kg coated alkaline protease (NCAP); (4) NCON + 16 000 U/kg alkaline protease (NAP); (5) NCON + 16 000 U/kg keratinase (NKA). The remaining 80 birds (10 replicates, 8 birds per replicate) were randomly assigned to endogenous indicator measurements. The results indicated that the NCON diet resulted in a higher feed-to-gain ratio and reduced protein digestibility, ileal amino acid digestibility, and intestinal morphological parameters (P < 0.05). Supplementation of different exogenous proteases significantly improved the apparent and true ileal digestibility of specific amino acids, enhanced jejunal chymotrypsin activity, and promoted intestinal morphological development, including increased villus height and villus height-to-crypt depth ratio (P < 0.05). Our findings suggested that the addition of exogenous protease improved the intestinal morphology of broilers.

Perception of bimodal warning cues during remote supervision of autonomous agricultural machinesOriginal Paper

Anita Chidera Ezeagba, Cheryl Mary Glazebrook, Daniel Delmar Mann

Res. Agr. Eng., 2025, 71(2):69-79 | DOI: 10.17221/73/2024-RAE

Agricultural machines that are fully autonomous will still need human supervisors to monitor and troubleshoot system failures. Recognising the emergency as soon as possible is crucial to reduce adverse effects. The ability of humans to detect visual, auditory, or tactile cues is usually enabled by warning systems. The effectiveness of different warning cues varies in terms of prompting a quick response. The study’s objective was to compare the effectiveness of two bimodal warnings (i.e., visual-auditory and visual-tactile) at eliciting supervisor perception (which equates to level one situation awareness). Twenty-five participants engaged in an autonomous sprayer simulation. Two realistic remote supervision scenarios (i.e., in-field and close-to-field) were used to examine two bimodal warning cues: (i) visual-auditory and (ii) visual-tactile. The effectiveness of each bimodal warning was assessed based on two measures: (i) response time and (ii) noticeability. There was no significant difference between the bimodal warning cues in terms of response time when tractor sound was present in the experimental environment (reflecting the in-field remote supervision scenario); however, visual-tactile cues yielded shorter response times than visual-auditory cues when the experimental environment was quiet (reflecting the close-to-field remote supervision scenario). There were no statistically significant differences between visual-auditory and visual-tactile warnings concerning noticeability. Participants’ subjective answers indicated they preferred the visual-tactile cues better than the visual-auditory cues. It is concluded that visual-tactile warnings are preferred over visual-auditory warnings to enable perception during remote supervision of autonomous agricultural machines (AAMs).

Exploring the role of epistemic benefit and responsible tourist behaviour in the selection of local wine by touristsOriginal Paper

Edgar J. Sabina del Castillo, Ricardo J. Díaz Armas, Desiderio Gutiérrez Taño

Agric. Econ. - Czech, 2025, 71(7):410-422 | DOI: 10.17221/383/2023-AGRICECON

The consumption of local wine at tourist destinations plays a fundamental role in creating authentic experiences. However, there is very little research that has looked in depth into the factors that influence tourists' consumption of this product, especially in relation to epistemic benefits and responsible tourist behaviour. This study proposes a theoretical model based on the Theory of Planned Behaviour (TPB). We conducted a survey involving 619 travellers who regularly consume wine when visiting Tenerife (Canary Islands, Spain). The results show that epistemic benefit and responsible tourist behaviour have a positive relationship with attitudes toward local wine consumption, subjective norms, and perceived behavioural control. Furthermore, the relationships proposed by the TPB are confirmed, except for the relationship between subjective norms and behavioural intention. These findings provide new knowledge on local wine consumption by tourists which will help to develop strategies to encourage its consumption in tourist destinations.

Silver fir restitution: The role of seedling stock type in adapting to various environmental conditionsOriginal Paper

Wojciech Kowalkowski, Rados³aw Jagie³³o, Marlena Baranowska, Wladys³aw Barzdajn

J. For. Sci., 2025, 71(7):358-371 | DOI: 10.17221/28/2025-JFS

Due to past human activities, Abies alba Mill. (European silver fir) now covers only 0.7% of the forest area in the Sudety Mountains. A large-scale restitution program has been launched to produce, plant, and effectively protect over 200 million seedlings. This study aims to validate commonly used seedling stock types and provide critical insights into identifying the most effective one. Three-year-old bareroot seedlings were produced in the open-canopy nursery (3/0) or under-canopy nurseries in Scots pine (Pinus sylvestris L.) (3/0 Sp) or Norway spruce [Picea abies (L.) H. Karst] (3/0 Ns) stands. Two stocks were produced in a greenhouse and transplanted to an open-canopy nursery (2/1) after the second year or into containers designed by Kosterkiewicz (2/1 K). Seedlings have been planted in four regions in the Sudety Mountains. Two performance characteristics have been measured: height and survival rate. Our findings demonstrate a clear gradient in sapling performance among seedling stock types (survival rate): 2/1 K (81%), 3/0 (73%), 3/0 Sp (73%), 2/1 (70%), 3/0 Ns (62%). This paper has shown that under favourable environmental conditions, bareroot seedlings can sufficiently achieve stable regeneration. Containerised seedlings perform better in harsher and more challenging microclimatic or trophic conditions. Kosterkiewicz's method presents a relatively low-cost and environmentally friendly alternative for silver fir restitution.

Study on the expression patterns and biological functions of oar-miR-214_3p in the ovary and uterus of Liangshan Black SheepOriginal Paper

Weihua Chang, Fengjiao Qiu, Shanchuan Liu, Guochao Ni, Ying Zhao, Yi Zhang, Guangwen Yan, Juanhong Wang

Czech J. Anim. Sci., 2025, 70(8):335-344 | DOI: 10.17221/36/2025-CJAS


This study elucidates the expression dynamics and biological functions of oar-miR-214_3p in ovarian and uterine tissues of Liangshan Black Sheep across distinct stages of the oestrous cycle, providing novel insights into its regulatory mechanisms governing ovine reproductive physiology. The study employed RT-qPCR, northern blotting, FISH, dual-luciferase reporter assays, and ELISA to analyse the expression and biological functions of oar-miR-214_3p in the ovary and uterus of Liangshan Black Sheep across different stages of the oestrous cycle (proestrus, oestrus, metoestrus, and dioestrus phases). RT-qPCR and northern blotting revealed that oar-miR-214_3p is expressed in the ovarian and uterine tissues, with significant variations across different stages. Compared with the dioestrus and metoestrus phases, oar-miR-214_3p expression was significantly increased during the proestrus and oestrus phases (< 0.05), with the highest levels observed during oestrus (< 0.05). FISH analysis indicated that oar-miR-214_3p is primarily localised in the cytoplasm. We constructed wild-type and mutant vectors for mammalian target of rapamycin(mTOR) and Semaphorin 4D (Sema4D). After intervention for 48 h in granulosa cell cultures, RT-qPCR analysis of mTOR and Sema4D expression revealed that the mimic and inhibitor groups suppressed and promoted the expression of these target genes, respectively. The control and NC groups showed stable expression levels with no significant differences. Dual-luciferase reporter assay confirmed that mTOR and Sema4D are oar-miR-214_3p target genes. ELISA revealed that the mimic and inhibitor treatment groups promoted and suppressed oestrogen secretion, respectively. These findings confirm that oar-miR-214_3p, primarily localised in the cytoplasm, regulates ovarian follicle development, ovulation, oestrogen secretion, and the oestrous cycle via its target genes, mTOR and Sema4D. The study provides valuable insights into improving sheep reproductive performance through molecular breeding techniques. These findings have significant clinical and practical applications for enhancing reproductive efficiency.

Correlation of DGT-P and conventional soil P tests with rye shoot biomass and P uptake across temperate soils with differential soil propertiesOriginal Paper

Alireza Golestanifard, Markus Puschenreiter, Robert Manglberger, Marion Gotthard, Herbert Eigner, Bernhard Spangl, Walter Wenzel, Jakob Santner

Plant Soil Environ., 2025, 71(9):621-637 | DOI: 10.17221/308/2025-PSE

Several phosphorus (P) extraction tests are being used as soil P tests, but many studies have shown that the correlation of extractable P with plant yield and P uptake varies and sometimes is poor. Infinite sink extraction methods may be superior in estimating plant P availability. Soil P tests were evaluated for their power in determining plant-available P pools. Thirty arable soils covering different soil groups were tested for soil characteristics and extractable P pools. Rye was grown on these soils for six weeks and analysed for shoot yield and shoot P concentrations. Correlations between soil P concentrations, shoot yield and shoot P content were investigated. Extractable P pools mostly significantly correlated with soil pH, texture and amorphous iron oxide content. High and significant correlations were found among most of the extractable soil P pools, except for calcium acetate lactate (CAL)-extractable P. In contrast to previous studies, diffusive gradients in thin films (DGT)-extractable P employed in our pot experiment did not perform better than other extraction methods in correlating with plant available P and uptake, likely because water availability was not a limiting factor of P diffusion. Plant-available P in the soils investigated in this study was controlled by P quantity (i.e. the amount of adsorbed P) and P intensity (i.e. the soil solution P). We conclude that the advantage of infinite sink extraction methods over equilibrium-based techniques becomes less apparent if P is not strongly intensity-controlled and water availability is not a limiting factor of P diffusion.

Effect of extruded flaxseed supplementation during the indoor fattening of yearling bulls on beef carcass, meat composition, and fatty acid profileOriginal Paper

Emir Mujiæ, Javier Mateo, Mahsa Dehnavi, Halil Omanoviæ, Aida D¾aferoviæ, Munevera Begiæ, Selma Èorbo

Czech J. Anim. Sci., 2025, 70(12):518-527 | DOI: 10.17221/5/2025-CJAS


This study investigates the impact of supplementing extruded flaxseed to the diet of yearling bulls during the indoor fattening on beef carcass quality, meat composition, and fatty acid profile. Twenty male crossbred calves (Holstein × Simmental) were divided into two groups: control group and flaxseed-supplemented group, each with 10 calves. The control group received a conventional diet, while the flaxseed group was fed the same diet enriched with 5% extruded flaxseed on a dry-matter basis. The study revealed no significant differences in growth performance, carcass weight, or yield between the two groups. However, the flaxseed-supplemented group exhibited a higher intramuscular fat content, which was likely due to the increased energy intake from the flaxseed lipid content. Additionally, flaxseed supplementation improved the fatty acid profile of beef by increasing the percentage of monounsaturated fatty acids (MUFA) and reducing the saturated fatty acid (SFA) percentage and the n-6/n-3 polyunsaturated fatty acid ratio. Despite these improvements, the study did not reveal any significant increase in the proportion of n-3 fatty acids in the meat. These findings suggest that while flaxseed supplementation enhances the nutritional profile of beef, further research is needed to optimise the balance of energy intake to maximise the increase in n-3 fatty acids.

Use of agricultural wastes to reduce toxicity effect of tetracycline on soil nematode communityOriginal Paper

Shuang Zhong, Ting-Ting Song, Yan QIN, Yun-Hui Li, Xue-Yuan Bai

[Ahead of Print]CAAS Agricultural Journals, X:X | DOI: 10.17221/148/2025-SWR


In order to remove soil tetracycline residue and identify the effect of tetracycline on soil nematode community, agricultural waste returning was applied in a maize monocropping field, northeast China. The results showed that plant parasites were the dominant genera in high concentration of soil tetracycline; however, bacterivores were the dominant genera in all organic matter amendments. Maturity index, structure index and enrichment index showed the highest values in biochar and compost mixed amendments and these treatments had the highest tetracycline removal rate and the highest concentration of macro-aggregates, total organic C and available N, followed by biochar seperate amendments. Overall, biochar and compost mixed amendments efficiently reduced the risk of soil tetracycline pollution below the threshold, with the characteristics of cheap, improving soil fertility and above all, environmentally friendly.

The role of the water regime in a reclaimed limestone quarryOriginal Paper

Marcela Burnog, Ale¹ Kuèera

J. For. Sci., 2024, 70(8):391-406 | DOI: 10.17221/6/2024-JFS

This study focused on the hydrophysical characteristics of an abandoned limestone quarry in Czechia. Six sites were examined; two sites were undergoing natural succession (the Quarry Wall and Reed Canary Grass plots, which had undeveloped arboreal layers) and four sites were undergoing managed forest reclamation. Of the four forest reclamation sites, three were classified as prospering (the Prospering Lime, Prospering Maple and Prospering Lime + Oatgrass plots) and one was in decline (the Declining Larch + Lime plot). The arboreal layer included small-leaved lime (Tilia cordata Mill.), sycamore maple (Acer pseudoplatanus L.), and European larch (Larix decidua Mill.). Our results showed that Lime + Oatgrass plot retained more water than other plots. Field soil moisture measurements indicated that throughout the 1096-day monitoring period, only the soils at the successional sites reached the wilting point (Quarry Wall plot: 159 days; Reed Canary Grass plot: 43 days). Soil heterogeneity in the reclaimed areas was due to variation in the soil profile depth, disturbance from mining activities, reclamation efforts, and the availability of quality soil material. Soil conditions and the dynamics at the quarry created less than ideal conditions for tree regeneration. This primarily relates to limiting and significantly heterogeneous successional plots.

Quality assessment of elderberry (Sambucus nigra L.) jamsOriginal Paper

Oana-Viorela Nistor, Doina-Georgeta Andronoiu, Liliana Ceclu

Czech J. Food Sci., 2025, 43(1):48-58 | DOI: 10.17221/111/2024-CJFS


Elderberries belong to the spontaneous flora of Sambucus nigra L., being considered wild fruits and even improper to be consumed. Dark violet-black and slightly glossy elderberry fruits are rich in bioactive compounds such as agglutinin, total anthocyanins and polyphenols. The importance of heating is claimed by the seasonal and toxic specific elderberry fruits. Moreover, the need to transform the fruits from not suitable for consumption into functional products and to prolong the shelf life of the product should be highlighted. Based on these affirmations, the aim of the study was to preserve the elderberries as jam with or without refined sugar. Phytochemical, textural, colour and sensory analyses were used to characterize three samples of jams (one without sugar, one with refined sugar and one with stevia sugar). The samples with stevia sweetener addition showed the highest values of anthocyanins (1.43 ± 0.16 mg·g–1 dry matter, DM) among the processed samples; as for the raw fruits, the anthocyanin content showed a decrease. The antioxidant activity determined by the 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay revealed similar values between all the analysed elderberry jams. In accordance with the other results, the most appreciated sample by the sensory evaluation was the sample with stevia sweetener. As a conclusion, the total sugar substitution could contribute to a more valuable matrix than the original one. The novelty of the study consists in the use of such popular spontaneous flora of Sambucus nigra L. berries and in a change of the inedible character of the raw fruits into edible functional foods with a prolonged shelf-life.

Shared knowledge and competitive advantages for economic diversification through olive oil tourismOriginal Paper

Edianny Carballo-Cruz, José Domingo Sánchez-Martínez

Agric. Econ. - Czech, 2026, 72(2):69-83 | DOI: 10.17221/344/2024-AGRICECON

The economic diversification of rural territories specialised in olive growing is key to the sustainability and resilience of these communities. In this context, olive oil tourism is presented as an innovative strategy to add value to the olive sector, attract visitors and promote public–private synergies. This study aims to determine the competitive advantages of olive oil tourism in the province of Jaén, Spain, using strategic analysis tools that align tourism resources with effective management strategies. Hence, in addition to a questionnaire completed by experts and a specialised literature review, we used the Quality Function Deployment (QFD) matrix, adapted to territorial analysis focused on tourism. This methodology correlates the territorial resources of olive oil tourism (TRs, the ‚what') with management specifications (MSs, the ‚how'). The analysis determines the relative importance of the TRs, the objective values and the technical importance of the MSs, and the direction of improvement. Furthermore, it includes an evaluation of competitiveness and estimates the technical-competitive positioning index. Nine TRs and eight MSs were identified and correlated, and Jaén's performance was compared to that of six other Spanish olive-growing provinces. Nine competitive advantages were identified, linked to five TRs (olive grove heritage landscape, tasting areas, exhibition centres, olive oil mills and greenways) and four MSs (olive mills, environmental education, diversification of supply and heritage promotion and innovation). This work proposes a useful tool to align resources and management, improve decision-making and move towards a more strategic governance in the olive oil tourism sector.

Technological and nutritional aspects of fresh purslane (Portulaca oleracea L.) in ice cream productionOriginal Paper

Engin Gündoğdu, Fatma Hezer

Czech J. Food Sci., 2025, 43(2):129-139 | DOI: 10.17221/93/2024-CJFS


Purslane (Portulaca oleracea L.) is rich in ω-3 fatty acids, antioxidants, and minerals, and has notable neuroprotective, anti-inflammatory, antimicrobial, antidiabetic, antioxidant, anticancer, and antihypertensive properties. This research evaluated the effect of fresh purslane (FP) on the physicochemical and nutritional properties of ice cream, including α-linolenic acid (ALA; 18 : 3; ω-3), mineral content, and antioxidant properties, along with sensory characteristics. FP was added at 0, 5, 10, and 15% (w/w) levels. The addition of FP significantly increased the iron (Fe), calcium (Ca), copper (Cu), sodium (Na), oleic acid (OA), and ALA contents (P < 0.05). FP also increased the first dripping and complete melting times, while decreasing overrun and viscosity. Total antioxidant capacity (TAC) remained unchanged (> 0.05), but total phenolic content (TPC) and 2,2-diphenyl-1-picryl-hydrazyl (DPPH) radical scavenging activity significantly increased (P < 0.01). Thirty-one volatile compounds were identified, with increases in octadecane, dodecane, and 2-hexenal concentrations due to FP addition. Although the addition of FP improved the ALA content and antioxidant properties, sensory results showed that FP over 5% (w/w) lowered taste and general acceptability scores. Thus, using 5% of FP in ice cream is optimal for enhancing nutritional properties.

Gamma-aminobutyric acid improves cold tolerance of wheat seedlingsShort Communication

Changjuan Shan, Zhimin Yuan

Plant Soil Environ., 2025, 71(6):441-452 | DOI: 10.17221/663/2024-PSE

To provide a new agent to enhance wheat cold tolerance, we investigated the impacts of gamma-aminobutyric acid (GABA) on wheat antioxidant and photosynthetic capacity and growth parameters under cold stress (CS). CS significantly improved superoxide dismutase, catalase, peroxidase, ascorbate peroxidase and gluathione reductase in wheat leaves. Meanwhile, CS also increased the contents of reduced ascorbate (AsA) and reduced glutathione (GSH). However, CS significantly increased electrolyte leakage (EL) and malondialdehyde (MDA) levels. Compared with CS, GABA + CS improved the activities of the above antioxidant enzymes and the contents of antioxidants. In this way, GABA improved wheat antioxidant capacity and decreased MDA content and EL under CS. Whereas CS significantly increased non-photochemical quenching coefficient (qN) and reduced soil and plant analyser development (SPAD) value, net photosynthetic rate (Pn), maximum photochemical efficiency of PSII (Fv/Fm), effective quantum yield of PS II (Y(II)), photochemical quenching coefficient (qP), plant height and biomass. Compared to CS, GABA + CS significantly promoted the photosynthetic capacity by reducing qN and increasing SPAD value, Pn, Fv/Fm, Y(II) and qP. In this way, GABA improved plant growth under CS. Our results indicated that GABA can be used as a new agent to improve wheat cold tolerance.

Potential of Thuja plicata and Chamaecyparis lawsoniana in the context of global climate change in the Czech RepublicOriginal Paper

Pavel Horák, Petra Jablonická, Robert Knott

J. For. Sci., 2025, 71(9):426-440 | DOI: 10.17221/51/2025-JFS

The introduction of non-native tree species is considered a potential adaptation strategy to global climate change (GCC) in the forestry sector. As some of the most widespread native species are undergoing stand disintegration due to both abiotic and biotic stressors, the search for alternative species becomes essential. These species can overwhelm native species with both production potential and adaptation to a changing climate. The research focused on climate-growth relationships of two introduced species of the Cupressaceae family, western redcedar (Thuja plicata Donn ex D. Don) and Lawson's cypress [Chamaecyparis lawsoniana (A. Murray) Parl.], in comparison with the native Scots pine (Pinus sylvestris L.) in the northeast part of the Czech Republic. The constructed tree ring chronologies were used as a basis for dendroclimatological analyses: basal area increment (BAI), linear growth trends, Pearson's correlations between climate variables and growth, resilience indices and others. Among the analysed species, Thuja plicata revealed the highest BAI and the most positive growth trend in the last 35 years, with values 2–3 times higher. The Chamaecyparis lawsoniana exhibited the highest negative correlation with mean summer temperatures. In general, Pinus sylvestris showed the highest correlations with precipitation. No clear pattern in resilience indices has been observed. Among the two introduced tree species examined, Thuja plicata emerges as a particularly promising candidate for future application in Central European conditions under ongoing GCC.

Using milk components to estimate the risk of energy imbalance in Holstein cows by means of receiver operating characteristic (ROC) analysisOriginal Paper

Magdaléna ©tolcová, Ludìk Bartoò, Eva Ka¹ná

Czech J. Anim. Sci., 2025, 70(10):428-437 | DOI: 10.17221/124/2025-CJAS


Negative energy balance (NEB) in dairy cows during early lactation significantly contributes to metabolic and infectious diseases, traditionally diagnosed via costly and time-consuming serum non-esterified fatty acids (NEFA) analysis. This study aimed to develop a practical and cost-effective diagnostic test for NEB based on milk components analysed routinely. Data from 692 Holstein cows (5–35 days in milk) located at five Czech dairy farms were analysed using multiple logistic regression and receiver operating characteristic (ROC) analysis. Results showed that 99 cows (14.3%) were classified as NEB+ (NEFA > 0.6 mmol/l). Cows in the NEB+ group exhibited a significantly higher milk fat content (P < 0.001) and milk fat-to-protein ratio (P < 0.001), and lower lactose concentrations (P < 0.001) compared to NEB− cows. Key indicators of lipomobilisation, such as C18:1, C18:0, and monounsaturated fatty acids (FA), were significantly higher (P < 0.001) in NEB+ cows, while saturated, short-chain, and medium-chain FA were lower (P < 0.001). The developed prediction models, incorporating milk fat and specific FA (e.g. C18:1, C18:0, C14:0), demonstrated high diagnostic efficacy. The area under the ROC curve (AUC) values ranged from 0.84 to 0.92 for individual farms and reached 0.83 for the combined dataset. Using the Index of Union method, optimal cut-off points yielded sensitivities between 0.72 and 0.86, and specificities between 0.72 and 0.85. For the overall model, both sensitivity and specificity were 0.76. In conclusion, the proposed diagnostic test, leveraging milk components, offers a reliable and practical tool for early NEB detection in dairy cows. This facilitates timely intervention, thereby mitigating adverse health and economic impacts. Further validation with larger and more diverse datasets is recommended.

Efficacy of a new ready-to-use PCV2 and Mycoplasma hyopneumoniae vaccine under field conditionsOriginal Paper

P Trampus, A Csagola, T Szalai, N Palmai, A Toth, N Terenyi, Z Nagy, NA Szeplaki, G Somogyi, E Rausch, Z Penzes, R Krejci

Vet Med - Czech, 2025, 70(11):401-407 | DOI: 10.17221/25/2025-VETMED

Coinfection of porcine circovirus type 2 (PCV2) with Mycoplasma hyopneumoniae (M. hyo) causes major worldwide economic losses within the swine industry. This study aimed to assess the safety and efficacy of a single dose of a bivalent vaccine containing PCV2d and M. hyo antigen (Cirbloc® M Hyo) under field conditions. Two studies were performed under the GCP (Good Clinical Practice) requirements on farrow-to-finish farms in Hungary and Cyprus. On both farms, the presence of both PCV2 and M. hyo infection was demonstrated. For both studies, safety parameters were observed and measured from inclusion at 21 (±3) days of age until 14 days after vaccination. Efficacy parameters were observed and measured from inclusion until slaughter. Administration of the vaccine was safe in both studies, as no general, immediate, or local reactions were observed. The efficacy of the vaccine was confirmed in both studies as the following parameters were significantly reduced in the vaccinated groups compared to the control groups: viraemia, faecal shedding, viral load in lungs and in all collected lymphoid tissues, M. hyo-specific lung lesions, and average daily body weight gain. These results collectively support the vaccine’s potential as an effective tool for disease control.

Degree of seedbed compaction and response of spinach (Spinacia oleracea L.) under different traffic treatmentsOriginal Paper

Esra Nur Gül, Emine Polat, Engin Özgöz, Naif Geboloğlu

Hort. Sci. (Prague), 2025, 52(4):342-352 | DOI: 10.17221/143/2024-HORTSCI


Soil compaction has negative impacts on plant productivity. Degradation of soil structure as a result of soil compaction can inhibit the development of plant roots and make it difficult for plants to take up water and nutrients. This can negatively affect plant growth and productivity. Compaction restricts plant root growth by increasing mechanical resistance, reducing oxygen uptake, and thus reducing crop yields as it inhibits plant development. In this study, the effects of soil compaction due to machinery traffic on the physical structure of soil, morphological characteristics and yield of spinach were investigated in Tokat, where vegetable farming is intensively practised. In the study, four different tractor traffic treatments [C – zero tractor traffic (control), T1 – 1 tractor traffic, T3 – 3 tractor traffic, T5 – 5 tractor traffic] were used. As traffic increased, the penetration resistance, bulk density, and porosity increased, and the lowest volume weight was obtained from the control treatment. Plant weight losses in T1, T3 and T5 treatments compared to the control treatment were 1.92%, 31.09% and 64.64%, respectively. The yield value, which was 62.0 t/ha in the C treatment, was determined to be 31.8 t/ha in the T5 treatment, representing a 48.70% decrease. The proper use of modern agricultural machinery plays an important role in preventing soil compaction and increasing plant productivity.

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.

Impact of formal and informal environmental regulations on agricultural carbon emissions: Empirical evidence from ChinaOriginal Paper

Yumiao Zhang, Qi Yin, Yufan Wu, Kun Ma

Agric. Econ. - Czech, 2026, 72(1):19-36 | DOI: 10.17221/467/2024-AGRICECON

Agricultural carbon emissions (ACE) is a critical contributor to global greenhouse gas emissions, which have already become a common challenge for global carbon reduction. As a major agricultural producer and largest carbon emitter, China has made great efforts to reduce ACE. Using the panel data of 30 provinces in China from 2011 to 2022, this study explores the heterogeneous impacts of formal environmental regulations (FER) and informal environmental regulations (IER) on ACE. The results reveal that both FER and IER have significant effect on reducing ACE, with FER showing a more pronounced effect. The mechanism analysis indicates that agricultural technological innovation and planting structure adjustment play important mediating roles in this impact mechanism. The effect of FER is more remarkable in major grain producing areas than in non-major grain producing areas, while the effect of IER is completely opposite. Compared with coastal regions, both FER and IER have significant inhibitory effect on ACE in inland regions. Additionally, the marketisation level may reinforce the inhibitory effect of both FER and IER on ACE. Based on the empirical results, this study suggests to strengthen the synergistic effect of FER and IER, promote agricultural technology innovation, and formulate targeted policies according to regional differences.

Research on the optimal design and process parameters of a castor seed cleaning machineOriginal Paper

Elchyn Aliiev, Valentyn Holovchenko, Olha Aliieva

Res. Agr. Eng., 2026, 72(1):41-58 | DOI: 10.17221/121/2025-RAE


In the context of the modern EU bioeconomy, the use of industrial crops, particularly castor beans (Ricinus communis L.), is relevant for the production of industrial and energy products without competing with food crops. Castor oil is used for the production of biodiesel, lubricants, paints and coatings, cosmetics, and pharmaceuticals. In Ukraine, castor beans can be cultivated on low-yield soils, with seed yields ranging from 1.5 t/ha to 2.1 t/ha depending on the variety. However, the morphological features of the fruits and uneven ripening complicate the mechanisation of harvesting and seed cleaning processes. Existing equipment designed for other crops cannot be applied due to the risk of damaging the castor seeds. A design of a castor seed cleaning machine has been proposed, combining mechanical fruit shelling with the aerodynamic separation of the mixture. The machine is equipped with an eccentric crushing cone, rubber linings, a pneumatic separation channel, a cyclone, and an automated control unit. As a result of numerical modelling and experimental studies of the process of separating and cleaning castor seeds, dependencies were obtained for the productivity of the developed machine Q, power consumption P, specific energy consumption E, fraction of unshelled fruits (segments) ξf, content of the clean seed in the seed collector ψs-s depending on the distance between the reverse and crushing cones δ, rotation frequency of the crushing cone n, diameter of the feed opening Din, inclination angle of the crushing cone axis γ, and airflow velocity V. A multi-criteria optimisation method was applied to find the optimal operating modes: δ = 10.8 mm; n = 282 rpm; V = 3.6 m/s; Din = 98 mm; γ = 3.6°; β = 20.3°. The following results were achieved: E = 0.0394 MJ/kg; Q = 163.4 kg/h; P = 1 861 W; ξf = 0.099; ψs-s = 0.958. The obtained results confirm the efficiency of the proposed design for industrial implementation.

Exogenous selenium treatment promoted garlic (Allium sativum L.) growth and improved product qualityShort Communication

Chuandong Qi, Jie Zhou, Dan Peng, Qingqing Zhao, Fanghua Wu, Jinping Wu, Fengling Guo

Hort. Sci. (Prague), 2026, 53(1):70-80 | DOI: 10.17221/79/2024-HORTSCI

Selenium is an essential trace element in the human body, mainly obtained from the daily diet. Producing selenium-rich agricultural products through selenium-rich cultivation is an important cultivation method. Selenium-rich agricultural products can effectively supplement the selenium element needed by the human body in daily life. In this study, we conducted research on selenium-rich cultivation techniques for garlic, and different concentrations of sodium selenite solutions were used for garlic field treatment. We tested the related agronomic traits, nutritional indicators, and selenium content of garlic sprouts and garlic bulbs. The yield of garlic sprouts (37.08 t/ha) and garlic bulbs (25.31 t/ha) and total selenium content of garlic sprouts (61.00 μg/kg) and garlic bulbs (2 930.00 μg/kg) of T3 treatment (120 mg/L Na2SeO3) were significantly increased, compared with the yield of garlic sprouts (30.66 t/ha) and garlic bulbs (20.90 t/ha) and total selenium content of garlic sprouts (6.33 μg/kg) and garlic bulbs (75.00 μg/kg) of the control (CK). Furthermore, selenium treatment improved the activity of antioxidant enzymes and reduced the accumulation of reactive oxygen species (ROS) in garlic sprouts during winter, and promoted the absorption of soil nutrients by garlic. Taken together, our research indicates that garlic, especially garlic bulbs, has strong selenium-rich ability, and selenium-rich cultivation techniques could significantly improve the yield and quality of garlic products.

Impact of cover crops in inter-rows of hop gardens on reducing soil loss due to water erosionOriginal Paper

David Kabelka, David Kincl, Jan Vopravil, Petr Vráblík

Plant Soil Environ., 2021, 67(4):230-235 | DOI: 10.17221/24/2021-PSE

Soil degradation caused by water erosion in sloping hop gardens is definitely a serious issue because the space in inter-rows is without plant residues for most of the year in traditional cultivation. Cover crops in inter-rows of hop gardens and their efficiency in soil conservation are assessed in this article. There is only little research available in this area, and our data bring unique information on water erosion in hop gardens. Technologies with different types of cover crops were always compared with the conventional cultivation. The research was conducted within the years 2016-2020. A field rainfall simulator was used to determine the soil conservation effectiveness of selected technologies. The simulated rainfall was performed in two stages of cover crops growth with the main aim to measure the overall soil loss. The outcomes from the measurements confirmed that cover crops in inter-rows of hop gardens protect the soil surface from falling raindrops and significantly (P-value < 0.05) reduce soil loss. It can be concluded that this technology had a soil conservation effect already one month after sowing, and it is a basis for sustainable agricultural management on sloping hop gardens.

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