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Results 1861 to 1890 of 4875:

Experimental evaluation of milk yield and selected traits of milk quality in Clun Forest ewesOriginal Paper

Jan Kuchtík, Kvìtoslava ©ustová, Tomá¹ Kopec, Ferenc Pajor, Leona Koneèná

Czech J. Anim. Sci., 2023, 68(7):306-312 | DOI: 10.17221/221/2022-CJAS


In general, it can be stated that the economics of non-dairy sheep breeding in the Czech Republic experienced a worsening trend in recent years. One of the ways to improve this situation is to use some of these breeds also for milk production. One of the possible breeds usable for milk production, especially for the good milk production of mothers, is the Clun Forest (CF). The aim of our experiment was to evaluate the daily milk yield (DMY) and the contents of fat (F), total protein (TP) and lactose (L), pH, titratable acidity (TA), concentration of urea (CU) and somatic cell count (SCC) in CF ewes during lactation. In our experiment, the following means of individual traits for the whole lactation were found: DMY: 579 g, contents of F, TP and L: 6.73%, 5.82% and 4.98%, pH: 6.55, TA: 8.74 °SH, CU: 36.08 mg/100 ml and log SCC: 4.71. The stage of lactation had a significant (P < 0.01) effect on DMY, contents of F and TP and pH and TA. The results of our experiment show that CF ewes had lower DMY than dairy breeds (DB). However, the majority of the milk quality traits was comparable to DB. Moreover, the high fat and protein contents and the values of most other milk quality traits are good prerequisites for high cheese yield and optimal final quality of other sheep’s milk products. The results of our experiment suggest that CF ewes could be used for milk production while the milk production of CF ewes should ensure an improvement in the economics and competitiveness of smaller farms in particular.

Evaluation of Streptococcus species isolated from subclinical sheep mastitis by molecular methods and determination of virulence factors and antimicrobial resistance genesOriginal Paper

V Ozavci, HT Yuksel Dolgun, S Kirkan, Y Seferoglu, Z Semen, U Parin

Vet Med - Czech, 2023, 68(9):359-367 | DOI: 10.17221/42/2023-VETMED

Streptococcus (S.) species are important pathogens that cause mastitis in sheep. The study aimed to examine Streptococcus species in sheep milk with subclinical mastitis, assessing their prevalence, antimicrobial resistance, and virulence genes. A total of 200 milk samples were collected from sheep farms in İzmir’s five districts. Out of 32 (28.6%) Streptococcus isolates identified by phenotypic methods, 25 were genotypically identified as S. uberis, 5 as S. agalactiae, and 2 as S. dysgalactiae. Disk diffusion was used to determine the antimicrobial resistance of the isolates. PCR was employed to identify antimicrobial resistance and virulence genes in the isolates. The highest resistance was found for cloxacillin (100%), and the highest sensitivity was found for florfenicol (84%). The most common resistance gene combination was tetM+tetS (3/32) for S. uberis in 9.4%. A total of five virulence genes were detected. GapC+sua (56.2%) constituted the most common gene pattern. The highest virulence gene gapC was detected in 78.1% (25/32) of the isolates. The cylE gene was not detected (0%) in the isolates. Streptococcus species may play a role in mastitis in sheep, emphasising the need for meticulous hygienic milking practices.

Assessment of the impact of agricultural support on crop diversityOriginal Paper

Zdeòka ®áková Kroupová, Luká¹ Èechura, Matìj Opatrný, Zuzana Hlou¹ková, Iveta Mlezivová

Agric. Econ. - Czech, 2023, 69(3):89-100 | DOI: 10.17221/387/2022-AGRICECON


This study examines the impact of agricultural support on crop diversity measured by a diversity index. Our results indicate that agricultural subsidies have a limited effect on agricultural biodiversity. By using unique farm-level data, we show that subsidies support the income of farmers rather than the agricultural biodiversity. The results are robust regarding the size, practice management and altitude of the agricultural holdings' operations and various measures of agricultural biodiversity. However, when interpreting the results, the limitations of biodiversity indices should be considered.

Acacia canopy structure and carbon stock in Ba Vi, VietnamOriginal Paper

Bui Manh Hung, Nguyen Thi Bich Phuong, Nguyen Van Quy, Nguyen Van Hop, Le Van Cuong, Yusif Habib

J. For. Sci., 2023, 69(1):21-32 | DOI: 10.17221/46/2022-JFS


Forest structure is a key component of its management and assessment in every forest ecosystem. In the study, 23 plots were established to obtain data on the acacia forest community based on tree size. Results from the study indicated that the acacia community could be broadly divided into two groups based on tree-size variables. The diameter and height frequency distributions of Group 1 were right-skewed, while those of Group 2 were more complicated. In both groups, there were positive correlations between tree-size variables, nonetheless the relationship between diameter at breast height and total height was best described using the cubic equation. Further, the Weibull and Sinh-Arcsinh (SHASH) best simulated the diameter and height frequency distribution. High-quality trees were found in a large diameter (> 30 cm) and height groups (> 22 m). In contrast, low-quality plants often concentrated on the smallest sizes. Therefore, trees with a diameter of 2–10 cm and a height lower than 8 m should receive attention to tend. Carbon stock in the two groups was 61.48 Mg·ha–1 and 64.21 Mg·ha–1, respectively. Tending solutions and measurements should be carried out regularly to promptly propose silvicultural measures and improve forest quality in future.

Sustainably produced butter: The effect of product knowledge, interest in sustainability, and consumer characteristics on purchase frequencyOriginal Paper

Dominika Jakubowska, Tomá¹ Sadílek

Agric. Econ. - Czech, 2023, 69(1):25-34 | DOI: 10.17221/294/2022-AGRICECON


Understanding buying behaviour for sustainable products is important for food producers and distributors. This study aims to examine the effect of knowledge of the product, interest in sustainability, and characteristics of consumers on the frequency of buying sustainably produced butter using the Stimulus-Organism-Response (SOR) model. In this study, two different types of butter were used, one produced by a well-known brand and the other by a less-known dairy. Data were collected through a structured online survey of 825 respondents from Poland. The research found that knowledge about the product and the sustainability-related product attributes does not positively influence the frequency of purchasing sustainable butter. The results indicate that consumers living in smaller towns, having higher incomes and smaller households, are more frequent buyers of sustainably produced butter.

Comparison of potassium quantity-intensity relationships in tropical paddy soil under tillage and no-tillage systems after fifteen growing seasonsOriginal Paper

Soni Isnaini, Maryati, A. Arivin Rivaie

Plant Soil Environ., 2023, 69(1):1-9 | DOI: 10.17221/337/2022-PSE

The information on the behaviour of potassium (K+) in tropical paddy rice soils, which is important for a better understanding of the plant availability of K+ is still very limited. We compared the quantity-intensity (Q/I) relationships for K+ under conventional tillage and no-tillage systems in tropical paddy fields in the absence and presence of K+ fertiliser in the addition of nitrogen. The results showed that the values of the activity ratio for K (ARK) and potential buffering capacities (PBCK) in the no-tillage rice field were respectively 16% and 33% higher than that in the conventional tillage field. With the addition of K fertiliser, the value of exchangeable K in equilibrium (ΔK0) in the no-tillage paddy field was 67.9% greater than that in the conventional tillage field. This indicates that K fertilisation is more efficient when applied on a no-tillage paddy field. When the K fertiliser was added (49.8 kg K/ha), the application of N fertiliser at the rate of 115 and 184 kg N/ha resulted in a higher ARK value than that at the rate of 46 kg N/ha. This suggests that the simultaneous application of K and N fertiliser was able to increase exchangeable K in the soil. The application of no-tillage increased of the dry grain yield of rice (about 10%) compared with the application of conventional tillage. Meanwhile, there were significant relationships between the rice yield with the ARK and ΔK0. Moreover, the ARK was significantly correlated with K-uptake.

The role of halotolerant N-fixing bacteria on rice agronomic traits on saline soils by path analysisOriginal Paper

Mieke Rochimi Setiawati, Betty Natalie Fitriatin, Diyan Herdiyantoro, Toto Bustomi, Fiqriah Hanum Khumairah, Nicky Oktav Fauziah, Tualar Simarmata

Plant Soil Environ., 2023, 69(1):10-17 | DOI: 10.17221/386/2022-PSE

Nitrogen-fixing bacteria (NFB) play a significant role in saline soil ecosystems. However, little is known about the correlation between NFB application on growth and yield components of rice plants on saline soils. Exploration and experimental methods were performed to obtain the potential of NFB from a rice field in saline soil and reinoculated in a pot experiment. The experiment was arranged as a randomised block design consisting of 8 treatments, namely inoculation application (control and seed treatments with 20 g inoculant/kg of seed) combined with soil application dosage (0, 500, 1 000 and 1 500 g/ha). The results showed that grain yield increased by 43.8–130.6% with seed treatment of 20 g inoculant/kg of seed combined with soil application 500–1 500 g inoculant/ha. Rice yield was affected by multiple variables NFB population, plant height, number of tillers, and grain straw ratio (R2 = 0.926). Path analysis findings showed that the greatest effective contribution (45.45%) yield of rice in saline soil was contributed NFB population. This finding concludes that the application of NFB inoculants as seed treatments and soil applications can serve as an effective as well as the environmentally friendly microbial-based strategy of rice cultivation on saline soil ecosystems.

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.

Combined effect of nitrogen and phosphorous fertiliser on nitrogen absorption and utilisation in riceOriginal Paper

Yating Zheng, Hong Chen, Guotao Yang, Rudan Wang, Nabi Farhan, Chong Li, Cheng Liang, Kaiqin Shen, Xuechun Wang, Yungao Hu

Plant Soil Environ., 2023, 69(1):25-37 | DOI: 10.17221/420/2022-PSE

The objectives of this study were to investigate the nitrogen (N) and phosphorus (P) balance fertilization strategy in paddy fields, and to evaluate the effects on N uptake and utilization in rice. In 2017-2018, the experiment was conducted using Deyou4727 hybrid rice with four different P fertilizer levels (0, 30, 60, and 90 kg/ha), marked as P0, P1, P2, P3 in turn, and four different N levels (0, 90, 150, and 270 kg/ha), similarly marked as N0, N1, N2, N3 in turn. The results showed that in the N-insufficient (N0, N1) environments, the P1 treatment increased N uptake and promoted transfer to the grain. However, high-P (P3) application increased the dry matter accumulation than other P levels, but limited the production and translocation of dry matter to some extent. In N-sufficient (N2, N3) environments, P2 level increased crop yield and N use efficiency by 11.35% and 37.01%. Unlike P2, none-P (P0) and high-P levels decreased rice dry matter translocation and transport capacity, which further affected N uptake and utilization in N-sufficient environments. Overall, the combination of the N application rate of 90 kg/ha and P application rate of 30 kg/ha, N application rate of 150, 270 kg/ha, and P application rate of 60 kg/ha had a high yield; strong nutrient accumulation and transfer ability. It was more inclined to balance N and P, which was beneficial to plant N absorption and utilization.

Effect of feeding a diet containing housefly (Musca domestica) larvae extracts on growth performance in broiler chickensOriginal Paper

Sang-O Park

Czech J. Anim. Sci., 2023, 68(1):44-51 | DOI: 10.17221/168/2022-CJAS


Insects like housefly (Musca domestica L.) are future feed resources for economic animals because insects can improve growth performance by promoting the immune function and gut microbial balance. However, little is known about research reports on housefly larvae extracts containing an antibacterial peptide. This study investigated the effect of feeding diets supplemented with housefly larvae extract (HLE) containing antibacterial peptides on the growth performance of broiler chickens. Nine hundred broilers (Ross 308) were fed diets containing HLE for 35 days. Treatment groups consisted of CON (control without HLE), PC (positive control, 8 ppm of avilamycin), HLE50 (diet containing 50 ppm of HLE), HLE100 (diet containing 100 ppm of HLE), HLE150 (diet containing 150 ppm of HLE), and HLE200 (diet containing 200 ppm of HLE). Body weight gain and feed conversion ratio were significantly (< 0.05) increased in HLE150 and HLE200 groups compared to those in the CON group. Spleen weights were higher in HLE150 and HLE200 groups than in the CON group. Caecal bifidobacteria and Lactobacillus counts were significantly (< 0.05) higher in HLE150 and HLE200 groups whereas E. coli and coliform bacteria counts were higher in the CON group. Caecal acetic acid, propionic acid, and total short-chain fatty acid levels were significantly (< 0.05) higher in HLE150 and HLE200 groups than in the CON group. These results show that feeding diets containing 150 ppm of HLE containing antimicrobial peptides could replace antibiotics to improve the growth performance of broiler chickens.

Soil quality assessment using SAS (Soil Assessment System)Original Paper

Daniel Toth, Jaroslava Jankù, Adéla Marie Marhoul, Josef Kozák, Mansoor Maitah, Jan Jehlièka, Luká¹ Øeháèek, Richard Pøikryl, Tomá¹ Herza, Jan Vopravil, David Kincl, Tomá¹ Khel

Soil & Water Res., 2023, 18(1):1-15 | DOI: 10.17221/141/2022-SWR

The paper proposes a new soil evaluation system using the principle of the Saaty method. The Saaty method has been modified and named Soil Assessment System (SAS). Significance weights are assigned to individual soil characteristics (indicators). This provides a more detailed differentiation of the significance of the indicator on soil quality and a more accurate assessment, especially in marginal cases where the assessment by the methods used so far has not been fully conclusive. In addition to physico-chemical properties, other criteria are taken into account to assess not only productional but also non-productional functions. The possibility of using indicators referring to a broader context (e.g., soil sealing value) is also important, thus enabling a comprehensive assessment of the quality of the land. This results in points for individual sampling locations. Soils are categorized according to the number of points and results are shown on maps.

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.

Factors affecting the in vitro embryo production in buffalo (Bubalus bubalis): A reviewReview

S Kumar, MS Chaves, AFB da Silva, WG Vale, STR Filho, JC Ferreira-Silva, LM Melo, VJF Freita

Vet Med - Czech, 2023, 68(2):45-56 | DOI: 10.17221/48/2022-VETMED


Under natural and well-managed conditions, the buffalo has good reproductive and productive indices. However, in vitro embryo production (IVEP) has been used commercially to maximise the number of elite animals. In this species, several factors (donor management, in vitro culture medium, semen, in vitro conditions, embryo transfer) still affect the IVEP results. In addition, the cost of this technique is very high for this purpose. Therefore, more studies, as well as adequate plans, are needed to achieve this objective efficiently. In this review, we discussed the current commercial status, influencing factors (in vivo and in vitro), and the progress and future challenges of IVEP in buffalo. A total of 81 references were used from 1979 to 2022. The relevant data or literature were searched using the following databases: Google, ResearchGate, Science Alert, Science Direct and PubMed, using the following keywords: buffalo oocytes/COCs, buffalo embryos, pregnancy and calving or live birth rate after embryo transfer. The best maturation, cleavage and blastocyst rates in the in vitro production of buffalo embryos were 95.8, 75.2 and 33.4%, respectively. The pregnancy and live birth rates ranged from 22.2% to 43.5% and from 15.3% to 36.5%, respectively, after the transfer of fresh embryos produced in vitro to the recipients. This review will help to contextualise IVEP in buffaloes, as well as create an adequate plan for implementing IVEP in buffaloes.

Influence of soil tillage technology on tillage erosionOriginal Paper

Jaroslav Korba, Pavel Bro¾, Josef Hùla, Petr Novák, Václav Novák

Res. Agr. Eng., 2024, 70(2):104-110 | DOI: 10.17221/64/2023-RAE


Tillage-induced erosion has negative impacts on the soil environment and production of the soil under intensive farming. Tillage erosion was evaluated during soil tillage performed by two technologies, i.e. conventional tillage and reduced tillage, commonly used in the Czech Republic. A field experiment was aimed at evaluating the soil particle translocation and magnitude of the vector angle. Aluminium cubes with an edge length of 16 mm were used as tracers. After each soil tillage operation, a metal detector searched these tracers in the topsoil. During the experiment, agricultural practices were always carried out on their respective dates for the whole season. The experiment results show that conventional tillage had a more adverse effect on tillage erosion than reduced tillage. This was confirmed on three experimental parcels with different slope gradients of 2, 6 and 11°. The largest translocation of soil tracers was observed on a parcel with the highest slope of 11°. There, the length of the translocation of tracers reached up  to almost 10 m. The average length of soil tracer translocation in reduced tillage and conventional tillage ranged between 0.86 and 3.69 m. The largest average vector angle of tracer locations was recorded on a parcel with a slope of 6° for reduced tillage. In the treatment with the slope of 2° and conventional tillage used, the direction vector indicated upslope translocation of soil tracers. It was caused by soil tillage with a mouldboard plough turning over the topsoil layer upslope. In a treatment with a slope of 2° and reduced tillage used, no influence of the crosswise slope gradient of the plot on the direction vector was observed. The acquired knowledge will be used in further study of soil erosion processes.

Decomposition of variations of direct payments rates on the example of selected support instruments applied in PolandOriginal Paper

Adrian Sad³owski

Agric. Econ. - Czech, 2023, 69(2):55-67 | DOI: 10.17221/285/2022-AGRICECON


In this paper, an original analysis of the direct payment rate shaping mechanism – in terms of the process and from the perspective of game theory – has been carried out. The factors determining the direct payments rates were identified. The results of measuring the impact of these factors on payments rates fluctuations were presented. The territorial scope of the study is Poland. The time range covers the years 2016–2020. The objective scope of the analysis includes four direct support instruments. It was found that the rates of sectoral area payments vary to a greater extent than the rates of general payments due to fluctuations in the area approved for a payment. The findings of this study can be used to develop a method for predicting payments rates based on the analysis of the fundamental factors. The prediction of payments rates could be used to support decision-making processes in agricultural policy. Therefore, the research results involving the decomposition of payments rates are of significant practical value in addition to their cognitive significance.

Recent development of economic indicators on Czech dairy farmsOriginal Paper

Jan Syrùèek, Ludìk Bartoò, Dalibor Øehák, Magdaléna ©tolcová, Jiøí Burdych

Agric. Econ. - Czech, 2023, 69(2):45-54 | DOI: 10.17221/381/2022-AGRICECON


A reassessment of factors related to milk production economics is needed because of continuing genetic improvements within the main dairy breeds and changes in farm management and the economic environment. Therefore, in this study, we aimed to evaluate the development of economic indicators between 2016 and 2020 on Czech dairy farms that kept either Czech Fleckvieh or Holstein breeds and that had different average milk yields. We used a questionnaire to obtain data from 66 dairy farms from different regions of the Czech Republic. The farms were divided into four groups according to breed and 2016 milk yield. Production costs increased during the period in all groups by 13% to 17% because of increasing milk yields, the associated higher feed consumption and increasing input prices. We observed a higher annual growth rate of costs per litre of milk on farms with above-average milk yields compared with the groups with below-average yields. The highest profitability before subsidies was achieved on farms with Holstein cows and above-average milk yields. Higher-income over feed costs were consistently observed in groups with higher milk yields. Because of low farm gate milk prices, profitability was significantly lower across all groups during 2016 than in other years.

Effects of apoptosis by 20α-hydroxysteroid dehydrogenase activity on corpus luteum formation during early pregnancy in cattleOriginal Paper

Ji-Hye Lee, Seok-Hyun Cho, Sang-Hwan Kim

Czech J. Anim. Sci., 2023, 68(2):53-63 | DOI: 10.17221/116/2022-CJAS


20α-hydroxysteroid dehydrogenase (20α-HSD) is a member of the aldo-keto reductase family. These enzymes play a pivotal role in regulating steroid hormones, such as androgens, oestrogen, and progesterone, and are, therefore, considered vital targets for determining whether a pregnancy is maintained. In this study, we investigated the association between 20α-HSD and apoptosis-related genes in luteal tissues (at 30, 60, and 90 days of gestation) and cells from early gestation in cattle. The corpus luteum altered the number of large lutein cells from 30–90 days. The change in the junction of the connective tissue appeared to affect the density of the corpus luteum. In addition, 20α-HSD was detected in the corpus luteum and cultured cells during early pregnancy, in contrast to the results of previous studies. The overall expression pattern of the 20α-HSD and Casp-3 proteins was lower on day 50 of gestation than on days 30 and 90. However, the 20α-HSD expression gradually increased from 30 to 90 days of gestation. When the 20α-HSD protein was increased to 0.5 μg/ml, 1 μg/ml, and 1.5 μg/ml in the luteal cells collected on day 30 of pregnancy, apoptosis was analysed after 48 hours. 20α-HSD generated in the cells was confirmed, and the concentration gradually decreased as the concentration increased. However, the expression of Casp-3 showed an overall similar expression pattern. Notably, the 20α-HSD and Casp-3 proteins were lowest at 1.5 μg/ml supplemented with 20α-HSD, with higher levels in the cytosol than in the cytoplasm. These results suggest that 20α-HSD plays a role in maintaining normal pregnancy, particularly by regulating the progesterone concentrations during luteal cell development.

Low-density lipoprotein supplementation improves the quality of Holstein bulls’ insemination dosesOriginal Paper

Jan Pytlík, Radim Codl, Jaromír Ducháèek, Filipp Georgijeviè Savvulidi, Marek Vrhel, Ludìk Stádník

Czech J. Anim. Sci., 2023, 68(2):64-71 | DOI: 10.17221/223/2022-CJAS


Despite the routine use of cryopreservation in dairy cattle, the subsequent deterioration in the quality of bull insemination doses (IDs) is an incentive to refine cryopreservation protocols, including the composition of the ID. The aim of this study was to examine, using a flow cytometry assay, whether the selected concentrations of low density lipoproteins (LDLs) extracted from hen-egg yolk may improve the post-thaw quality of the ID diluted with a plant-based extender. In total, 30 ejaculates from five sires (six trials per animal) were collected and processed at the Artificial Insemination Centre. The effect of the low density lipoprotein supplementation to the AndroMed® diluent at 4 and 8% (v/v) on the cryopreservation efficiency was tested. The effects of the modified extenders were determined on different sperm subpopulations by simultaneous quadruple staining for flow cytometry as the percentage of sperm with intact plasma membrane and acrosome (PMAI), PMAI sperm showing high mitochondrial membrane potential (HMMP), sperm with plasma membrane damage (PMD), and sperm with acrosome damage (AD). It was observed that the 8% LDL treatment was more effective (P < 0.05) in preserving all the analysed parameters than AndroMed® without any supplementation. The supplementation of the AndroMed® extender with 8% LDL resulted in the most optimal values of the PMAI (30.61 ± 1.13), HMMP (68.81 ± 1.25), PMD (68.69 ± 1.14), and AD (38.36 ± 1.13) compared to the control treatment (24.86 ± 1.13 for PMAI, 47.79 ± 1.25 for HMMP, 74.77 ± 1.14 for PMD, and 42.83 ± 1.13 for AD. The results of the study also demonstrated a synergistic positive effect of the LDL and soybean lecithin-based diluent on the spermatozoa post-thaw quality and resilience, based on 2 h long incubation. In conclusion, the soybean based semen extender treatment with LDL represents a beneficial tool to mitigate the detrimental effect of cryopreservation.

Effect of Broussonetia papyrifera leaf meal on growth performance, antioxidant capacity, and gut health status of growing rabbitsOriginal Paper

Kunliang Han, Bang Zhang, Yan Cui

Czech J. Anim. Sci., 2023, 68(2):87-97 | DOI: 10.17221/146/2022-CJAS


This experiment aimed to study the effect of Broussonetia papyrifera leaf meal (BP) on the growth performance, antioxidant capacity, intestinal permeability, and caecal microbiota of growing rabbits. A total of 240 weaned Ira male rabbits were randomly divided into four groups with six replicates of 10 rabbits each. The BP was added at 0% (CON), 3.0% (BP3), 6.0% (BP6), and 9.0% (BP9). All diets were isoenergetic, isonitrogenous, and isofibrous. The feeding trial lasted for 28 days. The results showed that adding BP had no significant effect on the growth performance of rabbits. Compared with the CON group, groups BP6 and BP9 showed the reduced serum diamine oxidase content (P < 0.01). The jejunal secretory immunoglobulin A content in BP6 was higher than in the CON group (P < 0.01). The addition of BP had no significant effect on the jejunal antioxidant capacity. The BP9 increased the abundance of the caecal Firmicutes; BP3 and BP6 increased Bacteroidota; BP6 and BP9 increased Proteobacteria (P < 0.05). It is concluded that the BP can be used as a roughage source to reduce intestinal toxic markers, improve the intestinal immune function and the abundance of caecal microflora in growing rabbits.

Lingual morphology of domesticated Asian small-clawed otters in Yogyakarta, IndonesiaOriginal Paper

AK Anjani, GR Saragih, H Wihadmadyatami, DL Kusindarta

Vet Med - Czech, 2023, 68(3):91-105 | DOI: 10.17221/62/2022-VETMED


This study aimed to observe the lingual morphology of the domesticated Asian small-clawed otter, Aonyx cinereus (A. cinereus), from Yogyakarta, Indonesia. Six domesticated A. cinereus adults were obtained from a local otter breeder in Yogyakarta, without regard to gender. The animals were acclimated to the laboratory for one day, followed by macroscopy identification and scanning electron microscopy (SEM) and light microscopy (LM) analysis. Macroscopically, the tongue of domesticated A. cinereus is divided into three parts: the apex, corpus and radix. The apex is the shortest part and can move freely. A median groove is bent along the corpus. Typically, the radix contains circumvallate papillae and the valleculae epiglottis. SEM and LM observations revealed that the lingual morphology of A. cinereus consisted of two types of papillae: mechanic papillae (horny filiform, leaf-like filiform, bifid filiform, trifid filiform, elongated leaf-like filiform, triangular filiform and conical papillae) and gustatory papillae (fungiform and circumvallate papillae). The lingual glands consists of Weber’s glands and von Ebner’s glands, which secrete acid and neutral mucins. Collagen fibre is found in the lamina propria and muscular layer. In conclusion, the papillae of the Asian short-clawed otter have the same structure as those of other Mustelidae family members.

Inoculation with Bacillus alters nitrogen uptake and metabolism in roots of Diospyros lotus under wheat straw addition in soilOriginal Paper

Peng Zhang, Fengge Hao, Zitan Zhu, Dongmei Lang, Huiling Hu

Plant Soil Environ., 2023, 69(10):463-470 | DOI: 10.17221/225/2023-PSE


A 15N-labelling technique was carried out to investigate the effect of wheat straw co-application with Bacillus nealsonii, Cohnella, and Paenibacillus lautus on N uptake and assimilation in Diospyros lotus. Wheat straw combined with Bacillus increased the plant height, biomass accumulation, photosynthetic capacity, and uptake of 15N by roots, with 15N accumulating mainly in leaves of D. lotus. The NO3-N content in roots and leaves were decreased by wheat straw co-application with Bacillus, whereas NH4+-N, soluble protein, and total N contents were increased. Wheat straw addition promoted the activities of nitrate reductase, glutamine synthase and glutamate synthase in roots rather than in leaves. These N assimilation enzymatic activities, and glutamic-oxaloacetic transaminase and glutamic pyruvic transaminase activities were markedly increased by wheat straw combined with Bacillus. Moreover, the combined application of wheat straw and Bacillus, particularly B. nealsonii, improved the N use efficiency. These findings suggest that the combined application of wheat straw and Bacillus improved D. lotus growth by increasing N uptake, metabolism, and utilisation efficiency.

Whole genome identification of CBF gene families and expression analysis in Vitis vinifera L.Original Paper

Xiang Fang, Yiling Lin, Chun Chen, Tariq Pervaiz, Xicheng Wang, Hefei Luo, Jinggui Fang, Lingfei Shangguan

Czech J. Genet. Plant Breed., 2023, 59(3):119-132 | DOI: 10.17221/82/2022-CJGPB

The CBF (C-repeat binding factors) genes play important roles in response to abiotic stress and environmental changes. In the present study, a total of 18 CBF genes were identified from a grapevine. Their domains, phylogenetics, and collinearity were analysed. The results revealed, that 18 VviCBF genes were distributed on 10 chromosomes unevenly in the grape genome. Promoter data analysis showed that the CBF gene has many cis-acting elements related to plant growth and development, light response, hormone, and abiotic stress response. We found that six VviCBF genes including, VviCBF5, VviCBF13, VviCBF14, VviCBF15, VviCBF16, and VviCBF18 differentially expressed during fruit developmental stages. Furthermore, four VviCBF genes including, VviCBF1, VviCBF3, VviCBF6, and VviCBF11 were expressed at the early stage of bud dormancy, whereas, nine VviCBF genes were expressed at the bud dormancy-breaking stage. Additionally, various VviCBFs genes respond to different abiotic and biotic stress. These findings will lay a foundation for further study of the CBF genes in bud dormancy, downy mildew, and abiotic and biotic stresses.

Biodiversity of Vitis vinifera endophytes in conventional and biodynamic vineyardOriginal Paper

Maria Vrublevskaya, Thi Tra My Nguyenová, Lucie Drábová, Petra Lovecká, Blanka Vrchotová, Olga Ma»átková, Markéta Kuli¹ová, Irena Jaro¹ová Kolouchová

Czech J. Food Sci., 2023, 41(1):44-53 | DOI: 10.17221/200/2022-CJFS


Plants are permanently exposed to biotic and abiotic stress and have therefore developed intricate resistance mechanisms, consequently. These include the presence of microbial endophytes, which can promote plant growth and ensure better resilience against unfavourable conditions. These microorganisms colonising plant tissues can directly affect plant growth by producing phytohormones, antioxidants, 1-aminocyclopropane-1-carboxylate (ACC) deaminase activity, or indirectly by the production of siderophores and antifungal agents. To the best of our knowledge, this is the first study devoted to assessing bacterial endophyte diversity and their plant growth-promoting properties in two utterly distinct vineyards in view of agricultural management (conventional, biodynamic) in the Czech Republic. With these different agricultural approaches, we hypothesised different numerical representations of bacterial endophytes acquired from vine shoots and leaves, which was not proved (P = 0.743, F = 0.129). A total of 470 distinct bacterial endophytes were isolated from the Vitis vinifera plants from the conventional and biodynamic vineyard and from which over 80% were identified by the matrix-assisted laser desorption-time-of-flight mass spectrometry (MALDI-TOF MS). In both vineyards, the dominant bacterial genus was Bacillus, followed by Pantoea, Pseudomonas and Staphylococcus. Plant-promoting endophyte properties varied with respect to the season and type of vineyard. The ability to produce indole-3-acetic acid (IAA) and ACC deaminase was higher in the biodynamic vineyard, in comparison with antioxidant activity, which was found in a higher proportion in isolates from the conventional vineyard.

Optimising consumer acceptability of Cauca specialty coffee through roasting profiles on acidity and body sensory attributesOriginal Paper

Diego Andrés Campo-Ceballos, Carlos Alberto Gaviria-López

Czech J. Food Sci., 2023, 41(1):64-72 | DOI: 10.17221/181/2022-CJFS

The roasting coffee process is the compilation of time-temperature-dependent physical and chemical transformations induced by heat. Through the study of the time-temperature curve, the correct definition of the degree of roasting of coffee is an area of active and non-trivial research, which intervenes in obtaining consistent roasting profiles reflected in the acceptability of the drink perceived by consumers. This paper used the methodology of response surfaces (RSM) with the central composite design (CCD). A consumer study was conducted with 104 individuals, each tasting 13 cups of specialty coffee from Cauca-Colombia. Predictive equations for acidity and body perception were obtained. The roasting profile points in charge, turning point, yellow, brown, first crack, and drop step were included. Mathematical models predict the acidity and body perceptions by integrating the roasting profile points characteristics of coffee. The Cauca coffee beans produced using the optimied conditions contribute to obtaining a roasting time/temperature of 468 s at 192 °C, respectively, with acidity (9/15) and body (5.5/15) in the (0–15) intensity consumer's perception scale.

Common bean (Phaseolus vulgaris L.) seed germination improves the essential amino acid profile, flavonoid content and expansion indexShort Communication

Luis Díaz-Batalla, Karina Aguilar-Arteaga, Javier Castro-Rosas, Reyna Nallely Falfán-Cortés, Ricardo Omar Navarro-Cortez, Carlos Alberto Gómez-Aldapa

Czech J. Food Sci., 2023, 41(1):73-77 | DOI: 10.17221/5/2022-CJFS

Common bean (Phaseolus vulgaris L.) is one of the most important grain legume foods for the human diet. Common bean seed is gaining attention due to its content of secondary metabolites with positive effects on human health. The present work analysed the effect of common bean germination on the essential amino acid profile, active compound content, and expansion index after extrusion processing. The content of tryptophan (Trp) in raw common bean (RCB) and in germinated common bean (GCB) seeds was 6.1 and 7.9 mg·g–1 of protein, respectively. The limiting amino acids in RCB were sulphur amino acids and Trp, and in GCB only the sulphur amino acids were the limiting amino acids. The germination process in beans increases the levels of quercetin and kaempferol and allows the synthesis of daidzein and genistein, and significantly increases the expansion index after extrusion processing. The germination of common bean could be used as a strategy to improve nutritional, nutraceutical, and processing properties.

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.

Citalopram in vitro metabolism in a beagle dog: A role for CYP2D15 in the production of toxic didesmethylcitalopram?Original Paper

B Rochat, E Paus, C Maitre, P Baumann

Vet Med - Czech, 2023, 68(4):135-144 | DOI: 10.17221/65/2022-VETMED

After administration of the serotonergic antidepressant citalopram (CIT) to beagle dogs, they may experience severe convulsive attacks in relation with considerably higher plasma concentrations of the metabolite didesmethyl-CIT (DDCIT), when compared to those in humans medicated with CIT. This pilot study aimed at determining the role of cytochrome P-450 (CYP450) isozymes in the in vitro metabolism of CIT to desmethyl-CIT (DCIT), and of DCIT to DDCIT in the liver microsomes of a single beagle dog. The incubations with racemic CIT or DCIT reveal a high affinity enzyme with Km between 0.3 µM and 1.4 µM for S- and R-DCIT and S- and R-DDCIT productions, respectively. In comparison to human enzymes, the intrinsic clearance values of this high affinity enzyme are between 15 µL/(min x mg of protein) and 52 µL/(min x mg of protein), i.e. very high. In vitro experiments with inhibitors suggest that CYP2D15, which shows analogy with human CYP2D6, is by far the main CYP450 isozyme involved in the production of DCIT and DDCIT whereas CYP3A12 and CYP2C21/41 showed a weak implication. These observations partly explain why in humans, plasma concentrations of the toxic DDCIT are considerably lower than those observed in dogs, after administration of CIT.

Vermiliquer as a biostimulant and antioxidant in hydroponic lettuce (Lactuca sativa) productionOriginal Paper

Adrian Esteban Ortega-Torres, Tomás Sabino Herrera-Matallana, Enrique Rico-García

Hort. Sci. (Prague), 2023, 50(1):25-31 | DOI: 10.17221/5/2022-HORTSCI

The use of vermiliquers obtained from earthworm in hydroponic crops is well received as alternative for fertilization of leafy vegetables. The vermiliquer boosts growth, defense compounds and increases the uptake of nutrients and minerals by plants. The growth and enzymatic activities related to stress and phenolic compounds were explored in hydroponic lettuce crops treated with different concentrations of vermiliquer. The treatments consisted in three different vermiliquer, a Mesh Vermiwash, a Direct Vermiwash, and the Vermileachate, and its combinations as a complement for complete fertilization. The addition of vermiliquer to hydroponic lettuce affected the leaf and root fresh weight, and reactive oxygen species like superoxide dismutase (SOD) or phenylalanine ammonia-lyase (PAL). Vermileachate (Vl) plus Direct Vermiwash treatment was higher in the first week in leaf and root lettuce, indicating an effect biostimulant. Vl gave the highest enzymatic activity in SOD and PAL, indicating an effect elicitor. In summary, vermiwash proved to improve hydroponic lettuce crop and enzymatic activities related to stress.

Effects of saline water and N levels on eggplant (Solanum melongena L.) fruit yield, water productivity, and nitrogen use efficiency by drip and surface flood irrigationOriginal Paper

Seema, Rita Dahiya, Ram Prakash, Vijay Pal Singh Panghal, Manoj Kumar Gora

Hort. Sci. (Prague), 2023, 50(1):32-44 | DOI: 10.17221/11/2022-HORTSCI

Due to a scarcity of freshwater resources, agriculture is dependent on the use of poor quality water for irrigation in arid and semi-arid regions. Hence, the effective use of poor quality water requires pioneering water management and nitrogen fertilizer practices for increasing yield and resource efficiency. This study aimed to investigate the effect of saline water levels, nitrogen fertilizer, and irrigation methods on eggplant yield, water productivity, NPK uptake, and nitrogen use efficiency. The experiment was conducted in 2019 and 2020 under drip (IM1) and surface flood irrigation (IM2). The treatments included three saline water levels i.e. canal water (SW1), ECiw=2.5 dS/m (SW2), and ECiw=5.0 dS/m (SW3) along with the three nitrogen levels of 75% (N1), 100% (N2), and 125% (N3) of the recommended dose of nitrogen. Application of saline water using IM1 reduced the ECe by 41.8% (SW2) and 34% (SW3) over IM2. The fruit yield, water productivity (WP), NPK uptake, and nitrogen use efficiency (NUE) was increased by 22%, 127.6%, 39.8%, 16.6%, 11.8%, and 23.8% under IM1 over IM2, respectively. A high saline water level under IM2 can cause more reduction in fruit yield, NPK uptake, and water use. Applying saline water through IM1 improves fruit yield, WP, and NUE by 13-32.8%, 104.1-147.3%, and 10.5-35.2% as compared to IM2. We found that saline water and N applied by drip improved eggplant yield, water productivity, and NPK uptake. It is concluded that irrigation water and nitrogen fertilizer consumption are optimized when saline water is applied through drip irrigation.

Legume crops use a phosphorus-mobilising strategy to adapt to low plant-available phosphorus in acidic soil in southwest ChinaOriginal Paper

Mei Chen, Xin Luo, Long Jiang, Rui Dong, Siddique K.H.M., Jin He

Plant Soil Environ., 2023, 69(10):471-479 | DOI: 10.17221/254/2023-PSE

Phosphorus (P) deficiency significantly affects crop productivity, especially legume crops. Therefore, it is important to understand the P-acquisition strategies of different leguminous crops. In this study, we undertook a pot experiment with 11 legume crops (soybean, faba bean, pea, cowpea, common bean, lentil, adzuki bean, chickpea, grass pea, red kidney bean and common vetch) to investigate P-acquisition strategies related to root morphology, organic acid and acid phosphatase exudations, and arbuscular mycorrhizal fungi (AMF) colonisation under low (4.4 mg/kg) and optimal (40 mg/kg) P conditions. The results revealed that P deficiency significantly decreased biomass and P accumulation, root length (10.5%), and root surface area (7.9%), increased organic acid exudation (80.2%) and acid phosphatase activity (16.8%), and did not affect root diameter or root AMF colonisation rate. Principal component analysis revealed a positive correlation between organic acid exudation and acid phosphatase activity, while root length and root surface area negatively correlated with organic acid exudation, acid phosphatase activity and root AMF colonisation rate. P accumulation positively correlated with root length, surface area, and diameter but negatively correlated with organic acid exudation, acid phosphatase activity, and AMF colonisation rate. These findings confirmed the following: (1) legume crops use a P-mobilisation strategy related to organic acid exudation and acid phosphatase activity to acquire P under low soil P conditions; (2) organic acid exudation coincided with acid phosphatase activity to mobilise soil inorganic and organic P, improving P accumulation; (3) a trade-off exists between the P-scavenging strategy related to root morphology traits and mobilisation strategy.

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