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Results 1171 to 1200 of 2032:

Clinical infection of Brucella canis in a companion dog with discospondylitis in the Republic of KoreaCase Report

JH Seo, YI Oh, SH Kim, KW Seo, BJ Kang

Vet Med - Czech, 2023, 68(7):293-298 | DOI: 10.17221/37/2023-VETMED

A 2-year-old, spayed female, Bichon Frise dog was presented with reluctance to exercise, back pain, and frequent sitting down. Multiple osteolysis, periosteal proliferation, and sclerosis of the vertebral endplates of T11–13 were observed in the radiography, computed tomography, and magnetic resonance imaging. The bacterial culture of the urine specimen, the polymerase chain reaction (PCR) of the blood, and the antibody tests were positive for Brucella canis. Accordingly, discospondylitis caused by B. canis was diagnosed and doxycycline was administered. The clinical signs resolved and the culture and PCR results were negative afterwards. Doxycycline was discontinued after 6 months. The clinical signs recurred 2 weeks later, and the combination treatment of doxycycline and enrofloxacin was initiated. Though no clinical signs were observed after 9 months and the bacterial cultures and PCR were negative, the antibody titre remained at 1 :  200 or more. The dog will continue taking antibiotics until the antibody titre drops. To the best of our knowledge, this is the first case report of a clinical infection of B. canis associated with canine discospondylitis in the Republic of Korea. Although the clinical signs of brucellosis might improve with antibiotic treatment, the disease cannot be cured due to Brucella’s various strategies to evade host immune systems. Specifically, it can proliferate and replicate within the host cells, resulting in an environment that makes treatment less effective. Furthermore, owing to its zoonotic potential, owners and veterinarians should consider lifelong management or euthanasia.

First report of Thanasimus femoralis (Zetterstedt, 1828) (Coleoptera: Cleridae) in forest nursery in the Western Black Sea Region of TürkiyeShort Communication

Nuray Öztürk, Beºir Yüksel

J. For. Sci., 2023, 69(8):360-365 | DOI: 10.17221/50/2023-JFS

In this study, the first observation of Thanasimus femoralis was conducted in Türkiye. Adults of T. femoralis and Thanasimus formicarius were collected from pheromone traps together with Ips sexdentatus, Ips acuminatus, Ips mannsfeldi and Scolytus intricatus in forest nurseries located in the Western Black Sea Region, between 2021 and 2022. The clerid and bark beetles were morphologically described. The aedeagus and antennae of T. femoralis were observed by scanning electron microscopy.

The use of functional amino acids in different categories of pigs – A reviewReview

N Hodkovicova, S Halas, K Tosnerova, K Stastny, M Svoboda

Vet Med - Czech, 2023, 68(8):299-312 | DOI: 10.17221/72/2023-VETMED

The present review deals with a particularly important topic: the use of functional amino acids in different categories of pigs. It is especially relevant in the context of the current efforts to reduce the use of antibiotics in pig farming and the search for possible alternatives to replace them. The review is based on the definition that functional amino acids (FAAs) are classified as dispensable amino acids, but with additional biological functions, i.e., not only are they used for protein formation, but they are also involved in regulating essential metabolic pathways to improve health, survival, growth, and development. We describe the mechanism of action of individual FAAs and their potential use in pigs, including glutamate, glutamine, arginine, branched-chain amino acids (i.e., leucine, isoleucine, and valine), tryptophan and glycine. The work is divided into three parts. The first part deals with the FAAs and their role in the overall health of sows and their offspring. The second part describes the use of functional amino acids in piglets after weaning. Part three examines the use of functional amino acids in growing and fattening pigs and their impact on meat quality.

Seasonal dynamics and abundance of brown marmorated stink bug Halyomorpha halys (Stål) on four trap cropsOriginal Paper

Luka Batistiè, Tanja Bohinc, Stanislav Trdan

Plant Protect. Sci., 2023, 59(3):264-277 | DOI: 10.17221/2/2023-PPS

The main purpose of the study was to examine the potential of crops, such as soybeans (Glycine max), sunflowers (Helianthus annuus), alfalfa (Medicago sativa), and sorghum (Sorghum bicolor), as trap crops for Halyomorpha halys. We monitored the abundance and seasonal dynamics of H. halys (egg clusters, larvae, and adults) on a selected number of various crops at 10-day intervals. The experiment was performed in two different regions of Slovenia (western and central) and in two different years (2021, 2022). The results varied depending on the location and the year. In the first experiment, data from the entire year showed that sorghum was the most attractive for H. halys adults (1.56 ± 0.12), followed by sunflowers (0.61 ± 0.05), soybeans (0.37 ± 0.03) and alfalfa (0.41 ± 0.21). In the second experiment, the abundance numbers of the pest were significantly lower compared to those of the first experiment [sorghum and soybeans (0.003 3 ± 0.002), sunflowers (0.000 3 ± 0.000 3)]. In both cases, the abundance numbers increased when all the crops entered the fruit development stage (BBCH 70+). Overall, the lower density of the H. halys population and the experimental design could also be some of the factors for such a low incidence of stink bugs in the central region of the country. More research will be needed to further develop effective control methods for this invasive pest.

Genetic diversity and maternal origin of Vietnamese indigenous chicken breeds inferred from complete sequences of mitochondrial DNA D-loop regionOriginal Paper

Thi Thanh Nhan Giang, Van Ba Nguyen, Thi Quynh Chau Nguyen, Khanh Van Nguyen, Lan Doan Pham

Czech J. Anim. Sci., 2023, 68(10):423-432 | DOI: 10.17221/226/2022-CJAS

Indigenous chickens play a significant role in food security, income growth and socio-cultural life of rural households in Vietnam. This study was conducted to assess the genetic diversity as well as the phylogenetic relationships of Vietnamese indigenous chickens (Gallus gallus) to support the conservation of their genetic resources for sustainable rural farming.  In this study, the genetic diversity and the phylogenetic relationships of 10 Vietnamese indigenous chicken breeds were analyzed using complete sequences of mitochondrial DNA (mtDNA) displacement-loop (D-loop) region. The average nucleotide and haplotype diversities of Vietnamese chickens were 0.006 3 ± 0.000 22 and 0.918 ± 0.010, respectively. A total of 39 polymorphic sites and 29 haplotypes were identified. The maximum likelihood tree classified these haplotypes into seven haplogroups (A, B, C, D, E, G and V), with haplogroups A and B being the two predominant maternal lineages of Vietnamese indigenous chickens, while haplogroups C, D, E, G and V were found in the remaining chickens. Several haplotypes from different haplogroups were shared among some chicken breeds. These results suggested that Vietnamese indigenous chicken breeds have multiple maternal origins, mainly from Chinese, Southeast Asian and Indian chickens, and that these breeds share common maternal lineages. The high level of genetic diversity in Vietnamese chickens demonstrates significance of conservation for future use.

The effect of different cooking methods on the antioxidant activity of wild Swiss chard (Beta vulgaris L. var. cicla)Original Paper

Yagmur Demirel Ozbek*, Ozlem Saral

Czech J. Food Sci., 2023, 41(5):375-381 | DOI: 10.17221/114/2023-CJFS


This study aimed to investigate the effects of different cooking methods (boiling for 5 min and 8 min, microwave cooking for 3.5 min and 6.5 min, and stir-fry for 5 min and 10 min) on wild chard's antioxidant activity and total phenolic content. It was determined that the total phenolic content [1 552.00 ± 299.82 mg GAE·(100 g)–1, GAE – gallic acid equivalents] increased in 3.5 min in the microwave [2 611.33 ± 311.76 mg GAE·(100 g)–1] and 5 min in stir-frying [2 434.33 ± 197.75 mg GAE·(100 g)–1] compared to the raw chard samples (P < 0.05). Two different antioxidant activity determination methods [2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity and ferric reducing antioxidant power (FRAP)] were used in the study. In both methods, it was determined that antioxidant activity decreased in the 10-min application of stir-frying. In contrast, the antioxidant activity increased by applying 3.5 min and 6.5 min in the microwave (P < 0.05). As a result, it was found that the antioxidant activity and total phenol content of wild chard changed when the cooking method and time were changed.

Profit efficiency and its determinants in the agricultural sector: A Bayesian approachOriginal Paper

Marta Arbelo-Pérez, Pilar Pérez-Gómez, Antonio Arbelo

Agric. Econ. - Czech, 2023, 69(11):436-445 | DOI: 10.17221/279/2023-AGRICECON


Most empirical studies evaluating efficiency in the agricultural sector estimate cost efficiency, assuming homogeneity across firms. However, achieving the goal of profit maximisation requires both minimising costs and maximising revenue. Unlike cost efficiency, the concept of profit efficiency considers the errors on both the input side and the output side, and thus, it is more appropriate for evaluating the overall performance of firms. This paper estimates profit efficiency and its determinants in the agricultural sector in Spain using a Bayesian stochastic frontier model with random coefficients. This methodology adequately captures the heterogeneity across firms in the industry. The results reveal, firstly, that agricultural firms in Spain are operating with an average profit inefficiency of 35.78% and, secondly, that this inefficiency is affected, albeit unevenly, by the size and age of the farm. Finally, the implications of these results for managers and public policies are discussed.

Insecticidal activity of essential oil from Jasminum sambac (L.) Aiton against Callosobruchus maculatus (Fabricius, 1775) (Coleoptera: Bruchidae)Original Paper

Ruchuon Wanna, Phirayot Khaengkhan, Darika Bunphan, Benjapon Kunlanit, Parinda Khaengkhan, Hakan Bozdoğan

Plant Protect. Sci., 2023, 59(4):369-378 | DOI: 10.17221/69/2023-PPS

Mungbean seeds [Vigna radiata (L.)] are easily damaged by insects during storage, and essential oils (EOs) have proved effective for controlling insect infestation. This research study assessed the bioactivity of EO from Jasminum sambac (L.) Aiton against Callosobruchus maculatus (F.). The chemical composition of EO was analysed by a gas chromatograph-mass spectrometer (GC-MS). All experiments were conducted following a completely randomised design (CRD) with four replications of the residual contact and seed dressing bioassays. Results indicated that J. sambac EO contained 35 compounds (97.587%), with the main component 3-hexen-1-ol benzoate. Residual contact toxicity LC50 values of this EO on adult C. maculatus at 24, 48, and 72 h were 5.01, 4.00, and 3.13 µL/mL, respectively. J. sambac EO at 8 µL/L showed the highest residual contact efficacy against C. maculatus, killing up to 100% in 72 hours. The highest concentration of J. sambac EO (1 mL/kg) gave optimal protection against C. maculatus within 4 and 5 days with 100% mortality. This concentration showed 100% inhibition of adult F1 progeny emergence, with no seed damage and weight loss of V. radiata L. after 30 days of exposure, and not significantly different from 0.8 mL/kg. Results indicated that J. sambac EO effectively prevented C. maculatus infestation and it could be used as an alternative to commercial chemical insecticides.

Effects of severe drought stress on the physiology and biochemistry characteristics of Welsh onion (Allium fistulosum L. var. giganteum Makino) seedlingsOriginal Paper

Xiaorui Liu, Tingting Zhang, Yang Song, Shijun Sun, Baosheng Wang, Shimao Cui

Hort. Sci. (Prague), 2023, 50(4):297-307 | DOI: 10.17221/58/2022-HORTSCI

The physiological regulation of Welsh onion seedlings was explored under short- and long-term drought stress. The Welsh onion cultivar ‘Neicong 3’ was grown in pots under drought stress (22.5–25% soil water content) or controlled watering conditions (65–67.5% soil water content). Different lengths of drought stress (7, 14, 21, and 28 days) were studied to determine the effects of the drought on the levels of the osmoregulatory substances, including proline (Pro), free amino acids (FAAs), soluble sugar (SS), and soluble protein (SP); the membrane-damage indicator malondialdehyde (MDA); the endogenous hormones indoleacetic acid (IAA), gibberellic acid (GA), abscisic acid (ABA), and jasmonic acid (JA); and the activities of the antioxidant enzymes superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD). The soil water content was restored to the control level after the drought stress to analyse the physiological responses of the Welsh onion with regards to rehydration. The results showed that the Welsh onion responded to drought stress primarily by increasing the levels of the osmoregulatory substances and the activities of the protective enzymes. The drought stress resulted in the accumulation of Pro, FAA, SS, MDA, and ABA in the pseudostems, while the IAA and GA levels decreased. Short-term drought stress led to a decrease in the SOD activity and an increase in the CAT activity, whereas the long-term drought stress led to a decrease in the POD activity. The effects of the drought stress on the SP and JA contents were negligible. The rehydration demonstrated that the short-term drought stress (7 or 14 days) did not exceed the tolerance of the Welsh onion; the substances regulating the drought tolerance were restored to normal levels after the stress conditions were relieved. In contrast, after the severe drought stress (28 days), the substances regulating the drought tolerance in the seedlings could not return to normal levels. This study provides a theoretical basis for the cultivation of the Welsh onion under early drought conditions and for breeding of drought-resistant varieties.

Effect of elicitors and biostimulants on the content of bioactive compounds in raspberry fruitsOriginal Paper

Nayelli Azucena Sigala Aguilar, Jose Antonio Gonzales Fuentes, Luis Alonso Valdez Aguilar, Mercedes Guadalupe López Pérez, Julia Medrano Macias Medrano Macias, Adalberto Benavides-Mendoza Benavides Mendoza, Susana González Morales

Hort. Sci. (Prague), 2023, 50(2):101-111 | DOI: 10.17221/98/2021-HORTSCI

Raspberry has acquired great interest in human health due to its content of bioactive compounds that provide protection against diseases caused by non-communicable diseases. Bioactive compounds are mainly represented by secondary metabolites such as phenols, anthocyanins, and flavonoids. Biostimulants and elicitors are substances or microorganisms that provide protection and defence to the physiological processes of plants. The present study evaluated the effect of two elicitors (hydrogen peroxide, salicylic acid) and three biostimulants (humic and fulvic acids, glutamic acid, seaweed extracts) on the content of bioactive compounds in raspberry fruits, agronomic and fruit yield parameters in plants. Hydrogen peroxide increased the content of bioactive compounds such as flavonoids, anthocyanins, omega 3 and oleic acid. Salicylic acid increased the content of flavonoids, anthocyanins, and citric acid in raspberry fruits; the number of fruit loaders and fruits per plant was also increased. Humic and fulvic acids, glutamic acid, and glutamic acid combined with seaweed extracts increased the content of flavonoids and anthocyanins, without affecting growth parameters and fruit yield. Glutamic acid and seaweed extracts were the only treatments that increased the content of palmitic acid, while seaweed extracts increased °Brix content in fruits.

Adaptation analysis of insect-resistant transgenic line after introducing mcry1F gene in maizeOriginal Paper

Daming Wang, Junqi Yin, Fengci Wu, Baifeng Wang, Zhilei Jiang, Jingang Liang, Xinyuan Song

Plant Soil Environ., 2023, 69(1):18-24 | DOI: 10.17221/286/2022-PSE

The ability to adapt, survive, and compete with weeds of transgenic plants is the necessary evaluation content to release transgenic lines in target regions. We compared weediness and agronomic traits of transgenic maize lines G1F-8 and G1F-19 carrying the mcry1F gene with their near-isogenic maize inbred line Zheng 58 in the wasteland and cultivated field under natural conditions for two consecutive years. The results showed that there was no significant difference identified in the species, quantity, and relative coverage ratio (RCR) of weeds between fields with G1F-8, G1F-19, and Zheng 58, regardless of the sowing pattern in the wasteland. Compared with the vigour of weeds, none of G1F-8, G1F-19, and Zheng 58 showed survival advantages, and all showed weak growth potential with no final grain yield. Meanwhile, no volunteer seedlings were found upon investigation in the following year. The simulated seed overwintering experiment in the wasteland further showed that the three kinds of maize could not germinate in the second year. In cultivated land, G1F-8 and G1F-19 had the same growth stages, plant height, and RCR as Zheng 58 throughout two years. In conclusion, the transgenic lines G1F-8 and G1F-19 exhibited no adaptability risk in Gongzhuling, Jilin, China.

Prediction of saturated hydraulic conductivity Ks of agricultural soil using pedotransfer functionsOriginal Paper

Kamila Bá»ková, Svatopluk Matula, Markéta Miháliková, Eva Hrúzová, David Kwesi Abebrese, Recep Serdar Kara, Cansu Almaz

Soil & Water Res., 2023, 18(1):25-32 | DOI: 10.17221/130/2022-SWR

The determination of the saturated hydraulic conductivity Ks on a field scale presents a challenge in which several variables have to be considered. As there is no benchmark or reference method for the Ks determination, the suitability of each available method has to be evaluated. This study is aimed at the functional evaluation of three publicly available types of pedotransfer functions (PTFs) with different levels of utilised predictors. In total, ten PTF models were applied to the 56 data sets including the measured Ks value and the required predictors (% sand, silt and clay particles, dry bulk density, and organic matter/organic carbon content). A single agricultural field with a relatively homogenous particle size distribution was selected for the study to evaluate the ability of the PTF to reflect the variability of Ks. The correlation coefficient, coefficient of determination, mean error, and root mean square error were determined to evaluate the Ks prediction quality. The results showed a high variability in Ks within the field; the measured Ks values ranged between 10 and 1261 cm/day. Although the tested PTF models are based on a robust background of soil databases, they could not provide estimates with satisfactory accuracy unless local soil data were incorporated into the PTF development.

Potential of moringa (Moringa oleifera) leaf powder for functional food ingredients: A reviewReview

Lina Novi Ariani, Teti Estiasih, Wenny Bekti Sunarharum, Alfi Khatib

Czech J. Food Sci., 2023, 41(1):8-20 | DOI: 10.17221/221/2022-CJFS


One of the efforts to produce functional foods is using ingredients containing health-beneficial bioactive compounds. Another way to produce functional foods is fermentation generating bioactive compounds or fortification with the bioactive compound extract. An ingredient historically believed to have benefits on health is moringa (Moringa oleifera) leaf powder. Moringa leaf powder is a valuable source of functional ingredients, including protein, vitamins, minerals, and phytonutrients such as carotenoids, tocopherols, polyphenols, flavonoids, alkaloids, and tannins. However, moringa is a plant that is distributed in various tropical countries in the world. Its quality depends on geographical differences, cultivars, environmental conditions, seasons, genotypes, and varieties. This article reviews the bioactive compounds of moringa leaf powder and the characteristics of moringa leaf powder extract. The effect of moringa leaf powder fortification on food product characteristics is also discussed. Moringa leaf powder possesses many pharmacological properties, such as anticancer, anti-inflammatory, hepatoprotective, cardioprotective, and antioxidant ones. The bioactivity of leaf extract is extracting solvent dependent. Therefore, fortification results in nutritional improvement and increasing health benefits of food products. However, the adverse effect is found in sensory. Thus properties, thus the moringa leaf powder fortification level usually is less than 10%. Changes in the functional properties of foods due to moringa leaf powder fortification have been studied to a limited extent. A low level of fortification might not affect the properties of food products. Therefore, moringa leaf powder is potentially used as a functional food ingredient. Some studies reported the toxicological effects of moringa leaf powder and the use of this ingredient, should be below the harmful doses.

Echocardiographic measurements and cardiac anatomy in healthy Western hognose snakes (Heterodon nasicus)Original Paper

M Oliveri, C Carnabuci, M Vignoli, S Di Feliciantonio, M Di Feliciantonio, L Della Salda, Z Knotek, M di Tommaso, A Luciani

Vet Med - Czech, 2023, 68(2):75-82 | DOI: 10.17221/63/2022-VETMED

This study aims to describe the most important cardiac structures in the Heterodon nasicus through echocardiography and anatomical dissection. Echocardiographic and echo-Doppler measurements were performed on twenty healthy adult Heterodon nasicus (10.10). The values of the ventricular length, aortic diameter, pulmonary trunk diameter, the mean thickness of the interventricular septum, and thicknesses of the wall of the cavum pulmonale (Cav. P) and cavum arteriosum (Cav. A), were measured. The aortic flow and pulmonary trunk flow were recorded. Two dead specimens (1.1) were dissected. The male’s pulmonary trunk diameter was bigger compared to the female’s in both the long and short axis. The reproductive ecology of Heterodon nasicus has yet to be fully elucidated upon, however, male territorialism and dispersal from the hibernacula, and multiple male courtships toward a single female were described, hence, the more active reproductive activity of the male and the consequent sexual selection toward a higher aerobic performance can be hypothesised. A moderate interventricular right to left shunt was noticed in the Cav. V of all the specimens, which is considered normal and should not confuse the clinician. Congenital defects, cardiomyopathies, valvulopathies, and pericardial diseases are known to occur in ophidians and other reptiles. Reliable data and profound knowledge of the anatomy and physiology of the ophidian heart are fundamental for the in vivo diagnosis of cardiac diseases in snakes.

Gene effects for begomovirus resistance and plant architecture attributes in pumpkin (Cucurbita moschata Duchesne)Original Paper

Neha Verma, Karmvir Singh Garcha, Madhu Sharma, Abhishek Sharma, Ajmer Singh Dhatt

Czech J. Genet. Plant Breed., 2023, 59(2):67-75 | DOI: 10.17221/56/2022-CJGPB

Knowledge of gene actions governing begomovirus resistance and plant architectural traits is a prerequisite for a successful hybrid breeding programme. Therefore, the gene actions associated with these traits were studied in two intervarietal crosses of Cucurbita moschata (C1: Punjab Nawab × MVSR-6711 and C2: Punjab Nawab × P-135). We used the generation mean analysis of six generations for this purpose. Significant differences between the generation means were observed for all the traits in both crosses. The parental lines differed significantly in most of the studied traits. The nature and magnitude of the gene effects of seventeen traits varied by trait and cross. A simple additive dominance model was adequate for the internode number, leaf length and width, petiole length, fruit weight and cavity diameter in C1 and the number of fruits/plant in C2. The non-allelic interaction was found to be significant for a majority of the traits including the per cent disease index of the squash leaf curl China virus, tomato leaf curl New Delhi virus and their mixed infections, which indicated, that recurrent selection in biparental progeny might be useful for the accumulation of genes with additive effects. Duplicate epistasis was observed for the vine, internodal and peduncle length in C1 and the internode number, petiole and peduncle length, peduncle and fruit polar diameter in C2. This information will help to establish a breeding program for the simultaneous improvement of virus resistance and yield traits in pumpkins.

Biostimulants improves the content of polyphenol in the potato tubersOriginal Paper

Krystyna Zarzecka, Marek Guga³a, Agnieszka Ginter, Iwona Mystkowska, £ukasz Domañski, Anna Sikorska

Plant Soil Environ., 2023, 69(3):118-123 | DOI: 10.17221/441/2022-PSE

Research was conducted to determine the content of total polyphenols (TP) in table potato tubers obtained in a three-year field experiment arranged as a split-plot design with three replicates. The first experimental factor included two potato cultivars: Oberon and Malaga, the second one being an application of the following biostimulants: PlonoStart, Aminoplant, Agro-Sorb Folium and the herbicide Avatar 293 ZC (clomazone + metribuzin). The polyphenol content of potato tubers was determined in the fresh tuber mass by the spectrophotometric method with the Folin-Ciocalteu reagent. The tuber content of polyphenols was affected by cultivars and test biostimulants. Cv. Malaga accumulated more polyphenols than cv. Oberon. Biostimulants + herbicide significantly increased an accumulation of polyphenolic compounds compared with tubers cultivated in the control unit which was not treated with the test products.

Determination of sorghum production energy input-output balance under farmers' practices in the Hararghe lowland areas of Ethiopia.Original Paper

Birhanu Gurracho, Yetenayet Tola, Abebe Badie, Solomon Habtegabriel, Sirawdink Forsido

Res. Agr. Eng., 2023, 69(4):189-198 | DOI: 10.17221/11/2023-RAE


Sorghum production energy input-output balance was studied during the 2020/2021 production year in Hararghe lowland areas of Ethiopia under farming methods practised by the farmers. The study aimed to assess the energy input and output and to analyse the energy use efficiency of sorghum production under farming practices of the farmers using the recently adopted early maturing varieties. Three sorghum varieties were used with Randomized Complete Block Design (RCBD) in 3 replications. Production inputs were uniformly applied to the entire unit plots. The average total production energy input was 12 188.07 MJ·ha–1 in which chemical fertiliser and mechanical energy contributed 47.40% (5 771.48 MJ·ha–1) and 43.60% (5 314.10 MJ·ha–1), respectively. The highest energy consumer stage was top-dressing followed by land preparation and sowing stages with values of 33.7, 25.20 and 20.20% of the total input, respectively. The remaining 20.90% of the input was distributed among the rest production operations. The mean energy output of 77 284.59 MJ·ha–1 for Makko was significantly higher than that of Qaqaba and Malkam varieties. Makko was also superior to Malkam and Qaqaba in mean energy ratio with values of 6.31, 5.48 and 5.84, respectively.


Formation of sensory active substances during ripening of Dutch-type cheese with reduced salt contentOriginal Paper

Irena Nìmeèková, ©árka Tre¹lová, Helena Èí¾ková, Tereza Rambousková, Jan Forejt, Zdenìk ©vandrlík, Vojtìch Kru¾ík, Dana Gabrovská

Czech J. Food Sci., 2023, 41(2):103-110 | DOI: 10.17221/239/2022-CJFS

The reduction of NaCl content in cheeses is nutritionally desirable but quite challenging due to NaCl's key role during cheese production and ripening. We focused on reformulated Dutch-type cheeses ripened for 120 days and their microbiological and sensory characteristics, including of determining organic acids (electrophoresis) and volatile substances (SPME-GC-MS analysis). Experimental batches contained 0.64, 0.90, and 1.19% NaCl or 0.77% NaCl together with 0.33% KCl. The influence of salts on lactose and citrate metabolism (the formation of lactic, acetic, and formic acid, ethanol, diacetyl, acetoin and 2,3-butanediol), proteolysis (the formation of glutamic acid), lipolysis and β-oxidation of fatty acids (the formation of 2-butanone, 2-butanol, hexanal, hexanoic and octanoic acid) was undetected. Contrarily, brining conditions affected the contamination of cheese surfaces with yeasts and halotolerant microorganisms and cheese consistency. While a typical consistency was formed only in the cheeses with 1.19% NaCl acceptable saltiness was declared in the cheeses with the content of salts 0.90% or higher. The partial replacement of NaCl with KCl caused metallic off-taste in the cheeses that ripened longer than Consistent acceptance seems to be the most limiting factor for the tested reformulation appears.

Endophytic fungi of hazelnut (Corylus avellana)Review

Rosario Nicoletti, Beata Zimowska

Plant Protect. Sci., 2023, 59(2):107-123 | DOI: 10.17221/133/2022-PPS

Results of a vast research activity carried out worldwide in the last decades have demonstrated that endophytic fungi hold a fundamental role in improving plant fitness based on their aptitudes as growth promoters and/or defensive mutualists. These properties may have applicative perspectives in crop production, particularly for tree species such as hazelnut (Corylus avellana), which is mostly cropped extensively in semi-natural contexts of highland regions throughout the temperate zones. The available data on the occurrence, ecological roles, and applications in biotechnology of endophytic fungi associated with hazelnuts are revised in this paper in view to provide a reference supporting future investigations and projects aimed at exploiting the potential of this component of the plant microbiome.

Evaluation of low temperature drying characteristics of fresh tea leaves (Camellia assamica) in an environmental chamber using mathematical modelsOriginal Paper

Anindita Sharma, Partha Pratim Dutta

Res. Agr. Eng., 2023, 69(2):55-64 | DOI: 10.17221/28/2021-RAE

Low-temperature drying (withering) is the first stage in black tea processing. Determination of appropriate end moisture content of green tea leaf as well as temperature and relative humidity (RH) maintained during withering eventually aid the final quality of the processed tea. Therefore, the tea leaf withering (partial drying) properties were evaluated in an environmental chamber using mathematical models. The temperatures and RH considered were 25, 30, 35 °C and 80, 85, 90%, respectively. A total of nine combinations of temperature and RH were considered by keeping one parameter constant. The conditions were taken adhering to that of the climatic conditions of Assam, India. The withering data from experiments were fitted into five drying models using the curve fitting method. The Page model gave better predictions with an R2 value of 0.9989 at 30 °C temperature and 90% RH. The total phenolic and flavonoid contents of the tea leaf samples were evaluated. The best results were 50.60 ± 0.02 mg GAE·g–1 (GAE – gallic acid equivalent) and 22.47 ± 0.01 mg QCE·g–1 (QCE – quercetin equivalent) at 30 °C withering temperature.

Seed yield, nutrient absorption and soil health as influenced by sowing time, nutrient levels and genotypes of garden pea (Pisum sativum L.)Original Paper

Anamika Chandel, Akhilesh Sharma, Parveen Sharma, Surinder Singh Rana, Ranbir Singh Rana, Shilpa

Hort. Sci. (Prague), 2023, 50(2):142-151 | DOI: 10.17221/138/2022-HORTSCI

The choice of variety, sowing time and optimum nutrition are important management options to optimise the seed yield. Accordingly, an experiment comprising of 18 treatments was conducted during the winter 2017–2018 and 2018–2019 in a factorial randomized block design, replicated three times to assess the response of pea genotypes (DPP-SP-6, Him Palam Matar-1 and Pb-89) to the seeding time (26th October and 10th November) and nutrient levels (0, 100 and 125% of the recommended NPK). The individual treatment effects revealed that early sowing, application of 125% NPK and DPP-SP-6 were significantly superior for the seed yield and related traits. The interaction effects indicated a significant response of the 125% NPK on the early sown crop for the seed yield, harvest index and NPK uptake. Significantly highest soil available NPK were obtained at 125% NPK with a respective increase of 41.54, 5.90 and 30.82 kg/ha, respectively, over the initial status. Early sowing of DPP-SP-6 with an application of 125% NPK is a better preposition for enhancing the productivity of peas.

A parametric analysis of eco-efficiency and its determinants: Evidence from Norwegian dairy farmsOriginal Paper

Habtamu Alem

Agric. Econ. - Czech, 2023, 69(7):284-290 | DOI: 10.17221/149/2023-AGRICECON


This study aims to estimate eco-efficiency scores and identify determinants of Norwegian dairy farms using a parametric approach that accounts for methane emissions. The study incorporates an environmental output measure and draws on 30 years of panel data from 692 specialist dairy farms (1991–2020). The findings indicate that Norwegian dairy farms are inefficient, with room for improvement in the dairy production system and the environment. According to the average eco-efficiency score, conventional dairy farms could cut input use and CH4 emissions by 5% while maintaining output. Furthermore, the study found that land tenure, experience, and government subsidies all positively impact eco-efficiency. Policymakers should encourage the best-performing dairy farms to share information on increasing productivity while considering environmental concerns to achieve better social and agricultural development. It should be noted that the study only looks at livestock methane emissions; future research may investigate other environmental factors.

Bioactive compounds and antioxidant activities of selected types of chilli peppersOriginal Paper

Terezia Hudáková, Monika ©uleková, Jan Tauchen, Martina ©emeláková, Matú¹ Várady, Peter Popelka

Czech J. Food Sci., 2023, 41(3):204-211 | DOI: 10.17221/45/2023-CJFS


Chilli peppers (Capsicum spp.) are important plants usually consumed as food or used as a spice or medicine. They contain a wide range of phytochemicals such as capsaicinoids, polyphenols (PPH), carotenoids (CC) and vitamins. This study aimed to quantify the contents of capsaicin, dihydrocapsaicin, total PPH, phenolic acids (PHA) and total CC, and the antioxidant activities of the chilli peppers Trinidad Moruga Scorpion, Bhut Jolokia, Habanero Red, Habanero Maya Red, Habanero Red Savina, Jamaica Rosso, Serrano, and Jalapeño. High-performance liquid chromatography was used to quantify the contents of the bioactive compounds. The capsaicin contents in the peppers ranged from 2.1 to 124.2 mg·g–1, the dihydrocapsaicin content ranged from 5.1 to 151.3 mg·g–1, the total PPH content ranged from 3.53 to 25.9 mg GAE·g–1, and the total CC content ranged from 114.7 to 1 390.8 μg·g–1. The chlorogenic acid content was highest in Habanero Red (82.6 µg·g–1). The 1,1-diphenyl-2-picrylhydrazyl test of free-radical scavenging activity indicated that the ethanolic extract of the Trinidad Moruga Scorpion pepper had the highest antioxidant activity correlated with the contents of phenolic substances.

The cytochrome P450 gene GhCYP94C1 is involved in drought stress in upland cotton (Gossypium hirsutum L.)Original Paper

Lijiao Gu, Pengyun Chen, Shuxun Yu

Czech J. Genet. Plant Breed., 2023, 59(4):189-195 | DOI: 10.17221/108/2022-CJGPB

Cytochrome P450 proteins belong to one of the largest families of enzyme proteins in plants and play important roles in plant growth and development and the stress response. In our previous studies, a cytochrome P450 gene, GhCYP94C1 (cytochrome P450 94C1), was functionally characterized as a positive regulator of seed germination, main root elongation and early flowering. However, whether the gene has other potential functions remains to be further explored. In our study, expression analysis showed that GhCYP94C1 was highly expressed in roots and was suppressed by drought treatment. Endogenous silencing of GhCYP94C1 via virus-induced gene silencing (VIGS) increased drought resistance in cotton plants, which was accompanied by the upregulated expression of the abscisic acid (ABA) biosynthesis gene nine-cis-epoxycarotenoid dioxygenase 9 (GhNCED9) during drought stress. Our findings suggested that GhCYP94C1 may play an important role in drought resistance. Combined with previous research results, the present results provide a theoretical basis for future breeding of new cotton varieties with early maturation and drought resistance.

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

Shawkat Abdulrazaq M'Sadeq

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

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

Strategies and methods for predicting soil organic matter at the field scale based on the provincial near infrared spectral databaseOriginal Paper

Shengyao Jia, Chunbo Hong, Hongyang Li, Yuchan Li, Siyuan Hu

Soil & Water Res., 2023, 18(3):158-168 | DOI: 10.17221/133/2022-SWR

The development and provision of soil spectral library (SSL) could facilitate the application of near infrared (NIR) spectroscopy for economical, accurate, and efficient determination of soil organic matter (SOM). In this work, the performances of partial least squares regression (PLSR) and convolutional neural network (CNN) combined with the datasets of Zhejiang provincial SSL (ZSSL) and the feature subset (FS) were compared for the prediction of SOM at the target field. The FS dataset was chosen from ZSSL based on similarity to the spectral characteristics of the target samples. The results showed that compared with modelling using ZSSL, modelling using FS can greatly improve the prediction accuracy of the PLSR model, but the impact on the performance of the CNN model was limited. The method of mean squared Euclidean distance (MSD) was an effective way for determining the optimal spiking sample size for the PLSR model only using the spectral data of the spiking subset and the prediction set. The PLSR model combined with the FS dataset and the spiking subset determined by MSD achieved the optimal prediction results among all developed models, which is an accurate and easy-to-implement solution for the SOM determination based on ZSSL.

Stem canker of dragon fruit (Hylocereus polyrhizus): Neocytalidium sp. is the new cause of the disease and its control using the sodium saltOriginal Paper

Riska, Jumjunidang, Tri Budiyanti, Eko Darma Husada, Ni Luh Putu Indriyani, Sri Hadiati, Irwan Muas, Ellina Mansyah

Plant Protect. Sci., 2023, 59(3):245-255 | DOI: 10.17221/112/2022-PPS


This study aimed to isolate and characterise a fungal pathogen associated with stem canker on dragon fruit and to evaluate the efficacy of sodium salt as an alternative control against it. The fungal pathogen was isolated and identified by morphological and cultural methods. SMNND11 and ARPN11 isolates, which are morphologically alike Neoscytalidium sp., were selected for the present study. The colony’s mycelial mass was greyish-white and turned to dark greenish-grey. The shape of the arthroconidia was ellipsoid to ovoid and hyaline to dark brown with septate arthrospores. The hyphae were brown in colour, septate, branched and constricted into spore chains before disarticulation. Based on the blast analysis using the aligned sequences of the internal transcribed spacer, the SMNND11 isolate was highly genetically identical (100%) to Neoscytalidium dimidiatum, the ARPN10 isolate was 98.6% identical to Neoscytalidium sp. and the neighbour-joining analysis revealed that both isolates were grouped into the same genus, Neoscytalidium sp. The in vitro study revealed that sodium salt at a concentration of > 3% showed high potential in suppressing the mycelial growth of the SMNND11 isolates. In a field trial, a sodium salt solution at 30 g/L applied twice a week, along with rotating chemical fungicides applied once a week, were able to reduce the disease severity of the stem canker disease on the dragon fruit. This study revealed that Neoscytalidium sp., as well as N. dimidiatum, is the positive pathogen that infects dragon fruit plants in IP2TP Sumani and Aripan West Sumatra. Thus, the culture and field studies support the potential control technique to alternating chemical fungicide on dragon fruit.

Effects of different habitats on Achnatherum inebrians (Hance) Keng ex Tzvelev (drunken horse grass) soil seed banks and aboveground vegetationOriginal Paper

Saimilakezi Taiwaikuli, Guili Jin, Shazhou An, Yiqing Dong, Peng Wei

Plant Soil Environ., 2023, 69(9):421-428 | DOI: 10.17221/191/2023-PSE

The soil seed bank, as a potential source of ground vegetation renewal, plays an important role in the natural recovery and succession of vegetation as well as in the construction of ecosystems. To clarify the characteristics of the soil seed bank of Achnatherum inebrians and its relationship with the aboveground vegetation, the soil seed bank density, species composition and aboveground vegetation of three different grassland types, namely, desert, steppe and meadow, were investigated by means of field survey sampling and indoor germination experiments. The results showed that the seed bank densities of the three habitats were ranked as desert (1 422.22 seeds/m2), steppe (2 077.78 seeds/m2) and meadow (3 722.22 seeds/m2). The numbers of species were 16, 11 and 17, respectively. With respect to the vertical allocation, the soil seed banks in each habitat were shallow, and the seeds were mainly concentrated in the soil surface layer (0–5 cm). The species richness of the soil seed banks in the three habitats was higher than that of the aboveground vegetation, but there were some differences in richness, evenness and dominance. The species richness and diversity of soil seed banks and aboveground vegetation in meadow habitats were higher than those in desert and steppe habitats, indicating that the soil seed banks and aboveground vegetation in meadow habitats had higher stability. There was a significant positive correlation between the density of temporary soil seed banks and the density of aboveground plant communities in grassland habitats. The results may provide some reference for the prevention and control of Achnatherum inebrians in the three habitats.

Lipid-rich bovine serum albumin is beneficial for the early development of bovine embryos, but induces lipid droplet formation in the blastocystOriginal Paper

Dae-Jin Kwon, Kyung-Do Park, HakKyo Lee, Jae-Don Oh

Czech J. Anim. Sci., 2023, 68(11):443-450 | DOI: 10.17221/107/2023-CJAS

Lipid-rich bovine serum albumin (LR-BSA) has been reported to increase the survival rate of blastocysts after freezing and thawing. However studies on the early development of in vitro fertilised (IVF) embryos are still insufficient in cattle. This study investigated the blastocyst productivity of in vitro culture (IVC) medium (synthetic oviductal fluid medium with amino acids, mSOFaa) supplemented with 5% fetal bovine serum (FBS, Control) or LR-BSA (1, 2.5, 5 mg/ml dosages, respectively) and the qualitative characteristics of produced blastocysts. Cleavage rates on day 2 were similar between all groups. Significant differences were obtained in the blastocyst rate in the 2.5LR-BSA group compared with the control (23.5% vs 35.7%, < 0.05). Hatching rates were significantly higher in all treatment groups than in control (< 0.05). The cell number in blastocysts did not differ among groups, but the apoptotic index in the 5.0LR-BSA group was higher than the control (< 0.05). The expression of embryo quality-related markers was affected. Octamer-binding transcription factor 4 (Oct4), placenta associated 8 (Plac8), and sex-determining region Y-box 2 (Sox2) genes expression in the 2.5LR-BSA group were significantly up-regulated compared to the control (< 0.05). Cytoplasmic lipid contents and the lipid droplet formation-related gene, sterol regulatory element binding transcription factor 1 (Srebf1), were significantly increased in the 5.0LR-BSA group (< 0.05). Therefore, the LR-BSA supplementation (2.5 mg/ml) to mSOFaa medium could contribute to the early development of bovine IVF embryos and the qualitative improvement of the resulting blastocysts.

Investigate the mystery of Baijiu production region – Environmental factors for Luzhou (Sichuan, China)Review

Guo Qingyan, Tang Yurun, Zhao Fan, Liu Ying, Tian Lei, He Zongjun, Guan Tongwei

Czech J. Food Sci., 2023, 41(5):323-339 | DOI: 10.17221/72/2023-CJFS


With a long tradition of brewing history, Chinese strong-flavour Baijiu (SFB) developed prosperously in the southwest, especially in Luzhou, and has existed for more than 300 years building craftwork and brewing techniques. As a product of the distillation of fermented grains, its production involves many microbial communities. During this time, microbial communities within production have burgeoned and evolved throughout the development history, enhancing unique texture and flavour. Meanwhile, environmental factors are critical constituents in the production, which provide the optimal conditions for processing procedures and various microorganisms, including externally controlled macro-environment and micro-environment of fermentation. By studying the correlation with environmental factors from macro and micro perspectives, we illustrated the bond with environmental symbiotic and holistic patterns of the intrinsic microbial community and fermentation characteristics. This review is essential to study and control the whole ecological conditions of the Baijiu fermentation process, aiming to gain insight into the dynamics of the microorganisms and ensure a traditional fermentation environment for quality control.

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