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Relevant bibliographies by topics / Effet inoculum

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Academic literature on the topic 'Effet inoculum'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 February 2022

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Journal articles on the topic "Effet inoculum"

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Zervos, S., S. C. Johnson, and J. M. Webster. "Effect of temperature and inoculum size on reproduction and development of Heterorhabditis heliothidis and Steinernema glaseri (Nematoda: Rhabditoidea) in Galleria mellonella." Canadian Journal of Zoology 69, no. 5 (1991): 1261–64. http://dx.doi.org/10.1139/z91-177.

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Larvae of Galleria mellonella were kept at temperatures of 5, 10, 15, 20, 25, and 30 °C, and exposed to six levels of inocula (5, 10, 25, 50, 100, and 500 infective juveniles/larva) of Heterorhabditis heliothidis and Steinernema glaseri. Temperature and inoculum level significantly affected time to first emergence, duration of emergence, and yield of juveniles. All parameters except emergence of H. heliothidis showed significant interactions between temperature and inoculum level. No juveniles emerged at 5 or 10 °C and development time was most rapid at 25 °C. No juvenile H. heliothidis emerged at 30 °C or with 500 infective juveniles/host, but duration of emergence was shortest at high temperatures with large inocula; yield per host and yield per inoculum were greatest at 20 °C with small inocula. Yields of S. glaseri were half those of H. heliothidis; duration of emergence was shortest at low temperatures; yield per host was greatest at 20 and 25 °C from large inocula; and yield per inoculum level was greatest when the numbers inoculated were small (5–50/host).

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Vaganova, Anastasia N., S. V. Borisenko, E. V. Nesterova, et al. "Cefazolin inoculum effect among methicillinsusceptible Staphylococcus aureus isolated from patients with skin infections." Clinical Microbiology and Antimicrobial Chemotherapy 23, no. 2 (2021): 205–11. http://dx.doi.org/10.36488/cmac.2021.2.205-211.

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Objective. To evaluate frequency and intensity of cefazolin inoculum effect among methicillin-susceptible staphylococci isolated from patients with skin infections. Materials and Methods. A total of 80 methicillin susceptible isolates of Staphylococcus aureus were identified by cefoxitin disk-diffusion test and negative results of real-time PCR for mecA gene. Inoculum effect was measured by broth microdilution test with two inocula with concentrations of 5 × 105 CFU/mL and 5 × 107 CFU/mL. The disk-diffusion test with cefoxitin was also performed. Penicillin susceptibility was determined by disk-diffusion method. Beta-lactamase blaZ gene was identified by real-time PCR. Results. The frequency of cefazolin inoculum effect in tested isolates was 30% which is consistent with data from different countries. The MIC values for concentrated inoculum reached CLSI breakpoint for cefazolin resistance in 2.5% of isolates. The isolates with inoculum effect and those without it had the similar MIC values for cefazolin in broth microdilution test for standard inocula and similar diameters of inhibition zone in disk-diffusion test with cefazolin. Penicillin resistance was more frequent in inoculum effect-positive isolates. Beta-lactamase activity is considered as a main cause of cefazolin inoculum effect in staphylococci. The beta-lactamase blaZ gene was identified in the majority of isolates with cefazolin inoculum effect, but it was also prevalent among inoculum effect-negative isolates. Conclusions. Up to 30% of MSSA isolates from skin lesions in dermatological patients from SaintPetersburg are positive for cefazolin inoculum effect. Those isolates are usually characterized by penicillin resistance. Most of the cefazolin inoculum effect-positive isolates also carry beta-lactamase blaZ gene.

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Adnan, Muhammad, Zahir Shah, Muhammad Arif, et al. "Impact of rhizobial inoculum and inorganic fertilizers on nutrients (NPK) availability and uptake in wheat crop." Canadian Journal of Soil Science 96, no. 2 (2016): 169–76. http://dx.doi.org/10.1139/cjss-2016-0012.

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Experiments were conducted to evaluate the effect of rhizobial inoculums and inorganic fertilizers on NP availability, soil microbial activity, wheat NPK concentration and uptake. These experiments were consisted of two factors, four inoculums (no, lentil, peas, and chickpeas) and two NPK doses (120:90:60 and 96:72:48 kg ha−1). Inoculums significantly increased plant total NPK concentration by 39, 57, and 37%, and their uptake by 66, 86, and 56%, respectively. Peas inoculum was most efficient in wheat NPK concentration and uptake. The interactive effect of inoculums and NPK demonstrated that peas and lentil inoculums with 20% less NPK had statistically better role than full NPK without inoculation. AB-DTPA extractible P and mineral N were progressively increased with incubation periods and exhibited significant differences between inoculated and uninoculated treatments during all incubation intervals for NP except at day 7 for N. Peas inoculum showed maximum mean net NP availability of 131.5 and 3.48 mg kg−1over 56 d of incubation, respectively. Significantly higher cumulative CO2of 1429 mg kg−1with a net increase of 866 mg kg−1was recorded for pea’s inoculums during 12 d of incubation interval. It is concluded that peas rhizobium could be used as a plant-growth-promoting rhizobacteria for wheat and other cereal crops.

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Bhagunde, Pratik, Kai-Tai Chang, Renu Singh, et al. "Mathematical Modeling To Characterize the Inoculum Effect." Antimicrobial Agents and Chemotherapy 54, no. 11 (2010): 4739–43. http://dx.doi.org/10.1128/aac.01831-09.

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ABSTRACT Killing by beta-lactams is well known to be reduced against a dense bacterial population, commonly known as the inoculum effect. However, the underlying mechanism of this phenomenon is not well understood. We proposed a semimechanistic mathematical model to account for the reduced in vitro killing observed. Time-kill studies were performed with 4 baseline inocula (ranging from approximately 1 × 105 to 1 × 108 CFU/ml) of Escherichia coli ATCC 25922 (MIC, 2 mg/liter). Constant but escalating piperacillin concentrations used ranged from 0.25× to 256× MIC. Serial samples were taken over 24 h to quantify viable bacterial burden, and all the killing profiles were mathematically modeled. The inoculum effect was attributed to a reduction of effective drug concentration available for bacterial killing, which was expressed as a function of the baseline inoculum. Biomasses associated with different inocula were examined using a colorimetric method. Despite identical drug-pathogen combinations, the baseline inoculum had a significant impact on bacterial killing. Our proposed mathematical model was unbiased and reasonable in capturing all 28 killing profiles collectively (r 2 = 0.88). Biomass was found to be significantly more after 24 h with a baseline inoculum of 1 × 108 CFU/ml, compared to one where the initial inoculum was 1 × 105 CFU/ml (P = 0.002). Our results corroborated previous observations that in vitro killing by piperacillin was significantly reduced against a dense bacterial inoculum. This phenomenon can be reasonably captured by our proposed mathematical model, and it may improve prediction of bacterial response to various drug exposures in future investigations.

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Geron, Luiz Juliano Valério, Luiz Eduardo Cantão Veloso, Sílvia Cristina de Aguiar, et al. "In vitro fermentation of the rations containing Morinda citrifolia L. (Noni) using two types of inoculum." Semina: Ciências Agrárias 40, no. 2 (2019): 831. http://dx.doi.org/10.5433/1679-0359.2019v40n2p831.

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The effect of inclusion of Morinda citrifolia L. (Noni) in standardized diets of sheep on in vitro digestibility and parameters fermentation was examined using two different inoculums (ruminal liquid and sheep feces). To determine the nutrients’ in vitro digestibility coefficient (IVDC), two sheep were used as inoculum donors. The experimental design was factorial (4 × 2), with four diets containing different proportions of Noni and two types of inoculum. The different dietary proportions of Noni (0%, 8%, 16%, and 24%) did not affect the IVDC of dry matter (DM), organic matter (OM) and crude protein (CP) for both inoculums. The IVDC of neutral detergent fiber (NDF) differed significantly between the inoculums. After in vitro incubation for 24 h, the pH value of the fermented material differed between the different diets and between the inoculums. Moreover, the concentration of ammoniacal nitrogen was affected by the proportion of Noni and differed between the inoculums after incubation for 24 h. The inclusion of up to 24% of Noni in standardized rations for ruminants did not affect the IVDC of DM, OM, CP, and NDF. The use of feces as inoculum for in vitro fermentation produced lower IVDC values than those by ruminal liquid. The diet containing 8% of Noni and fermented with ruminal liquid produced higher pH values after 24 h of incubation. Taken together, the different dietary Noni proportions and the different inoculums can alter the concentration of ammoniacal nitrogen of sheep diets after 24 h in vitro fermentation; however, they seem not to affect the IVDC of the nutrients.

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Lenhard, Justin R., та Zackery P. Bulman. "Inoculum effect of β-lactam antibiotics". Journal of Antimicrobial Chemotherapy 74, № 10 (2019): 2825–43. http://dx.doi.org/10.1093/jac/dkz226.

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AbstractThe phenomenon of attenuated antibacterial activity at inocula above those utilized for susceptibility testing is referred to as the inoculum effect. Although the inoculum effect has been reported for several decades, it is currently debatable whether the inoculum effect is clinically significant. The aim of the present review was to consolidate currently available evidence to summarize which β-lactam drug classes demonstrate an inoculum effect against specific bacterial pathogens. Review of the literature showed that the majority of studies that evaluated the inoculum effect of β-lactams were in vitro investigations of Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, Haemophilus influenzae and Staphylococcus aureus. Across all five pathogens, cephalosporins consistently displayed observable inoculum effects in vitro, whereas carbapenems were less susceptible to an inoculum effect. A handful of animal studies were available that validated that the in vitro inoculum effect translates into attenuated pharmacodynamics of β-lactams in vivo. Only a few clinical investigations were available and suggested that an in vitro inoculum effect of cefazolin against MSSA may correspond to an increased likeliness of adverse clinical outcomes in patients receiving cefazolin for bacteraemia. The presence of β-lactamase enzymes was the primary mechanism responsible for an inoculum effect, but the observation of an inoculum effect in multiple pathogens lacking β-lactamase enzymes indicates that there are likely multiple mechanisms that may result in an inoculum effect. Further clinical studies are needed to better define whether interventions made in the clinic in response to organisms displaying an in vitro inoculum effect will optimize clinical outcomes.

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Amekan, Yumechris, Dyah Sekar A. P. Wangi, Muhammad Nur Cahyanto, Sarto Sarto, and Jaka Widada. "Effect of Different Inoculum Combination on Biohydrogen Production from Melon Fruit Waste." International Journal of Renewable Energy Development 7, no. 2 (2018): 101–9. http://dx.doi.org/10.14710/ijred.7.2.101-109.

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The natural microbial consortium from many sources widely used for hydrogen production. Type of substrate and operating conditions applied on the biodigesters of the natural consortium used as inoculum impact the variation of species and number of microbes that induce biogas formation, so this study examined the effect of different inoculum source and its combination of biohydrogen production performance. The hydrogen producing bacteria from fruit waste digester (FW), cow dung digester (CD), and tofu waste digester (TW) enriched under strictly anaerobic conditions at 37OC. Inoculums from 3 different digesters (FW, CD, and TW) and its combination (FW-CD, CD-TW, FW-TW, and FW-CD-TW) were used to test the hydrogen production from melon waste with volatile solids (VS) concentration of 9.65 g/L, 37°C and initial pH 7.05 ± 0.05. The results showed that individual and combined inoculum produced the gas comprising hydrogen and carbon dioxide without any detectable methane. The highest cumulative hydrogen production of 743 mL (yield 207.56 mL/gVS) and 1,132 mL (yield 231.02 mL/gVS) was shown by FW and FW-CD-TW, respectively. Butyric, acetate, formic and propionic were the primary soluble metabolites produced by all the cultures, and the result proves that higher production of propionic acid can decrease hydrogen yield. Clostridium perfringens and Clostridium baratii prominently seen in all single and combination inoculum. Experimental evidence suggests that the inoculum from different biodigesters able to adapt well to the environmental conditions and the new substrate after a combination process as a result of metabolic flexibility derived from the microbial diversity in the community to produce hydrogen. Therefore, inoculum combination could be used as a strategy to improve systems for on-farm energy recovery from animal and plant waste to processing of food and municipal waste.Article History: Received February 5th 2018; Received in revised form May 7th 2018; Accepted June 2nd 2018; Available onlineHow to Cite This Article: Amekan, Y., Wangi, D.S.A.P., Cahyanto, M.N., Sarto and Widada, J. (2018) Effect of Different Inoculum Combination on Biohydrogen Production from Melon Fruit Waste. Int. Journal of Renewable Energy Development, 7(2), 101-109.https://doi.org/10.14710/ijred.7.2.101-10

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Makhura, Emmanuel Pax, Edison Muzenda, and Tumeletso Lekgoba. "Effect of Substrate to Inoculum Ratio on Biogas Yield." Journal of Clean Energy Technologies 8, no. 2 (2020): 16–19. http://dx.doi.org/10.18178/jocet.2020.8.2.519.

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Brook, I. "Inoculum Effect." Clinical Infectious Diseases 11, no. 3 (1989): 361–68. http://dx.doi.org/10.1093/clinids/11.3.361.

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Inderjit and K. M. M. Dakshini. "Allelopathic effect of cyanobacterial inoculum on soil characteristics and cereal growth." Canadian Journal of Botany 75, no. 8 (1997): 1267–72. http://dx.doi.org/10.1139/b97-841.

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Allelopathic effects of cyanobacterial inoculum on soil characteristics and cereal growth were investigated. Research established the alteration of chemical characteristics of the soils inoculated with different concentrations of cyanobacterial inoculum. Inoculated soils, compared with uninoculated soils, sometimes had significantly different values for chemical characteristics such as pH, electrical conductivity, organic matter, organic N, total phenolics, and exchangeable cations such as Cu, Zn, Na, K, Mg, and Ca as the level of inoculum increased. Despite a significant increase in organic nitrogen in the inoculated soils, root growth of rice and wheat was suppressed. The total phenolic content of inoculated soils increased in proportion to the concentration of inoculum added and the suppression of root growth. It is, therefore, suggested that prior to formulating and recommending cyanobacterial inocula as biofertilizers, their allelopathic aspects should be studied to determine a soil to algae ratio having minimum (least altered) chemical characteristics and nonsignificant allelopathic influences on each other. Key words: allelopathy, cyanobacterial inoculum, organic N, phenolics, rice.

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Dissertations / Theses on the topic "Effet inoculum"

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Vitale, Laurent. "Etude comparative de l'activité antibactérienne in vitro de huit bêta-lactamines sur les trois espèces d'entérobactéries du groupe 3 les plus fréquemment isolées en clinique." Paris 5, 1997. http://www.theses.fr/1997PA05P185.

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Pichereau, Solen. "Etude de l'activité des antibiotiques utilisés en clinique dans les infections communautaires à staphylococcus aureus sur la décroissance bactérienne, la production de toxines et le relargage de cytokines par les cellules mononuclées." Poitiers, 2011. http://www.theses.fr/2011POIT1802.

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Les infections communautaires à CA-MRSA sont un problème de santé publique majeur aux Etats-Unis et l'épidémie pourrait s'étendre en Europe si ce pathogène n'est pas mieux maîtrisé par les traitements antibiotiques disponibles sur le marché. L'objectif de ce travail a été d'utiliser des modèles d'infections PK/PD pour étudier l'activité des antibiotiques utilisés en clinique vis-à-vis des souches CA-MRSA. Les doses optimales d'antibiotiques efficaces vis-à-vis de CA-MRSA ont été déterminées à l'aide d'un modèle PK/PD d'infection musculaire chez la souris immunodéprimée. La sensibilité des antibiotiques à l'effet inoculum des souches CA et HA-MRSA a été étudiée à l'aide d'un modèle d'infection in vitro pharmacodynamique simulant les concentrations plasmatiques libres chez l'adulte. Cette étude objective montre en particulier que l'activité de la minocycline, du linézolide, de la clindamycine et de la daptomycine n'est pas influencée par l'inoculum bactérien contrairement à celle du TMP/SMX qui est sensible à l'effect inoculum. L'effet des antibiotiques sur l'expression des gènes des toxines de virulence de CA-MRSA a été ensuite quantifié à l'aide d'un modèle in vitro dynamique Hollow Fiber. La clindamcyine, la minocycline, le linézolide ont une activité antitoxinique significative vis-à-vis de la production de PVL contrairement à l'association TMP/SMX qui induit une surexpression toxinique. Enfin, l'impact des antibiotiques à différentes concentrations sur le relargage des cytokines par les cellules mononuclées exposées aux toxines de virulence de CA-MRSA a été mesuré. Les inhibiteurs de la synthèse protéique bactérienne (la tigécycline, le linézolide, la clindamycine) et le TMP/SMX semblent diminuer le relargage des cytokines mesurées, alors que l'azithromycine, la daptomycine et la vancomycine n'ont pas d'effet significatif sur les cytokines étudiées. En conclusion, l'efficacité des antibiotiques vis-à-vis des souches CA-MRSA est la résultante de leur activité antimicrobienne, antitoxinique et de leur impact sur le relargage des cytokines par les cellules mononuclées. Les antibiotiques inhibiteurs de la synthèse protéique bactérienne semblent permettre une meilleure maîtrise des infections à CA-MRSA en limitant la production de toxines et une réponse immunitaire exagérée alors que l’association TMP/SMX semble à utiliser avec prudence<br>The rapid spread of CA-MRSA is concerning all over the world due to multiple reports of overwhelming and tissue-destructive infections. This epidemic could become a public health problem in France if the virulence and behavior of this pathogen regarding antibiotics treatment is not fully understood soon. The aim of this work was to use different PK/PD models to better evaluate antibiotic activity against CAMRSA strains. Optimal dosing regimens of clinically available antibiotics against CA-MRSA were determined using an in vivo PK/PD infection model in mice. Susceptibility of antibiotics to the inoculum effect of CA and HAMRSA strains has been evaluated using an in vitro pharmacodynamic model simulating free drug concentrations in humans. This study shows that minocycline, linezolid, clindamycin and daptomycin activities are not affected by the inoculum effect, while TMP/SMX activity is significantly reduced at high inoculum. The impact of those antibiotics on CA-MRSA toxins gene expression has been studied using an in vitro PK/PD Hollow Fiber model. This study shows that clindamycin, minocycline and linezolid have an antitoxinic effect on CA-MRSA toxins while TMP/SMX significantly increases PVL production. This study was supplemented by the evaluation of the impact of those antibiotics at different concentrations on cytokines release from PBMCs after exposure to S. Aureus toxins. The protein synthesis inhibitors (tigecycline, linezolid, clindamycin) and TMP/SMX decrease cytokines release from PBMCs while azythromycin, daptomycin, vancomycine do not show any significant impact on the studied cytokines. As a conclusion, antibiotics activity against CA-MRSA can be define by their antimicrobial and antitoxinic activity and their impact on cytokines release from PBMCs. The protein synthesis inhibitors seem to be efficient antibiotic against CA-MRSA by limiting toxins production and exacerbated immune response. The antibiotic association TMP/SMX seems to be use carefully in severe CA-MRSA infections

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Baijnath, Sharika. "Effect of inoculum source, inoculum pressure and cultivar on development of black scurf on potatoes in South Africa." Diss., University of Pretoria, 2012. http://hdl.handle.net/2263/24650.

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Rhizoctonia solani inoculum can be present either as soil- or tuber-borne sclerotia or hyphae. Although both inoculum sources play a role in disease development, it is not clear which of the two is more important. Successive cultivation of potato crops increases R. solani soil inoculum load resulting in an escalation in disease incidence and severity. The use of tolerant cultivars, however, can effectively reduce inoculum levels thereby decreasing disease intensity. Four pot trials were conducted; the objective of the first two pot trials was to determine the effect of tuber and soil-borne inoculum and stolon inoculations on disease development in sandy and clay loam soils. The second two pot trials were aimed at determining susceptibility levels of five cultivars. Two field trials were planted over two growing seasons in the same soils, using three inoculum levels. Results from the pot trials showed that tubers harvested from inoculated sandy soils developed significantly more disease than those harvested from clay loam soils. Of the three inoculum sources, stolon inoculation and seed-borne inoculum resulted in significantly more disease on progeny tubers than those from R. solani spiked soils. Although none of the cultivars proved to be tolerant to R. solani, BP1 was less susceptible to R. solani at temperatures between 21-26oC. More severe disease symptoms were observed under cooler temperatures on all cultivars. Results from the field trial showed the cultivation of potatoes in the same soil over two growing seasons resulted in an increase in diseased (black scurf) tubers. Furthermore, black scurf was most severe on tubers from soils infested with the highest concentration of inoculum. There were significant disease severity differences, with initial soil inoculum levels being directly proportional to final disease severity. Future studies in South Africa should focus on investigating the genetic composition of various cultivars; the effect of soil type and pH on the pathogenicity of R. solani and the use of molecular diagnostic tools to detect and quantify R. solani in soils.<br>Dissertation (MSc)--University of Pretoria, 2012.<br>Microbiology and Plant Pathology<br>unrestricted

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Balko, Tamara. "Characterization of the inoculum effect with Haemophilus influenzae and ß-lactams." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq23211.pdf.

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Barrett, E., and Phillip R. Scheuerman. "The Effect of Cell Inoculum Level and Substrate Concentration on p- cresol Degradation." Digital Commons @ East Tennessee State University, 1998. https://dc.etsu.edu/etsu-works/2914.

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Barrett, E., and Phillip R. Scheuerman. "Effect of Inoculum level of a Freeze-Dried Consortium and Substrate Concentration on p-cresol Degradation." Digital Commons @ East Tennessee State University, 1998. https://dc.etsu.edu/etsu-works/2915.

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Hine, R. B., P. A. Mauk, and Tesfaye Tedla. "The Effect of Soil Temperature and Inoculum Levels of Thielaviopsis basicola on Black Root Rot of Cotton." College of Agriculture, University of Arizona (Tucson, AZ), 1988. http://hdl.handle.net/10150/204546.

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Two planting dates, March 28, and April 28 were used to study the effect of soil temperature during planting on black root rot of cotton. Also, several cotton varieties were evaluated for response to the disease under varying soil temperatures and inoculum levels.

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Hinks, Jamie. "Effect of inoculum on bioelectricity yield and the use of factorial experiments for assessing microbial fuel cells." Thesis, University of Newcastle Upon Tyne, 2012. http://hdl.handle.net/10443/1449.

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The study aim was to understand the effect of inoculum on bioelectricity production and the interactions that occur between organic load, external resistance and fuel type during the operation of a Microbial Fuel Cell (MFC). The first experiment explored the effect of four different environmental inocula (freshwater sediment, two types of return activated sludge (RAS) and anaerobic sludge) on microbial fuel cell performance. The number of bacteria in each of the inocula were standardised prior to experiments to achieve an inoculum density of 1.29 x 107cells ml-1 so that the comparison between treatments could be carried out fairly. For almost every metric (voltage, current and coulombic efficiency) the RAS inoculum outperformed freshwater sediment and anaerobic sludge inoculum. The treatment efficiency was high in all instances (>79%) with the exception of anaerobic sludge (33%). Microbial community analysis showed that anodes from MFCs exhibited a more complex microbial community profile than anodes from MFCs inoculated with anaerobic sludge. Two experiments were performed to investigate the relationship between fuel type, organic load and external resistance and their effects on MFC performance using an iterative Design of Experiments (DoE) approach. In the first experiment, a half factorial design was used as a screening study to investigate the main effects of fuel type (glucose vs acetate), organic load and external resistance. The study found that acetate performed poorly compared with glucose and that the experimental settings for external resistance should be modified for future experiments. The second experiment used a full factorial design and showed that only organic load exerted a statistically significant effect on cell potential, current and coulombic efficiency and that a statistically significant interaction effect between organic load and external resistance is exerted on cell potential and coulombic efficiency. The dominant effect of organic load was also apparent in DGGE community fingerprint profiles, which clustered according to organic load, of the anode community samples taken from MFCS in this study. In conclusion, the experiments yielded useful insights into inoculum effects and the interactions between basic operational parameters in an MFC that will be useful for selecting the operational parameters of MFCs depending on the field conditions and process requirements. The novelty of the techniques deployed in this study – standardisation the inoculum and exploring MFCs within a Design of Experiments framework – are noted along with the advances to our understanding of MFCs and the fact they have provided new tools with which to study MFCs systems. The wider implications of the performance characteristics of the MFCs used in this study and the findings presented within are discussed.

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Ballinas, Archundia Susana. "Effect of Saccharomyces cerevisiae on In Vitro Fecal Digestion of Four Feed Ingredients Commonly Used to Feed Horses in Mexico." Tesis de Licenciatura, Universidad Autónoma del Estado de México, 2016. http://hdl.handle.net/20.500.11799/65150.

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ABSTRACT: The study aimed to assess the nutritive value in vitro of 4 feeds (grains and forages) commonly used in horses nutrition in Mexico, in the absence or presence of Saccharomyces cerevisiae at 4 mg/g DM. Fecal inoculum was obtained from 4 adult English Thoroughbred horses fed on restricted amount of concentrate and oat hay ad libitum. The incubated substrates included were corn gluten meal, soybean meal, oat grain and alfalfa hay. Gas production was recorded at 2, 4, 6, 8, 10, 12, 14, 24, 48 and 70 h using the Pressure Transducer Technique. Some ingredient × yeast interactions were observed (P < .020) for the asymptotic gas production (GP) and GP at 48 and 70 h of incubation. Yeast addition increased (P < .001) the asymptotic GP of concentrates compared to forages. Concentrate feeds had higher (P < .05) GP and lower (P < .001) rate of GP compared to forages without yeast. From 24 to 70 h of incubation, forages with or without yeast had lower (P < .05) GP compared to concentrates with yeast addition. Forages had higher fermentation pH compared to concentrates, but lower (P < .05) metabolizable energy (ME), in vitro organic matter digestibility (IVOMD) and microbial protein production (MBP) compared to concentrates. Yeast addition increased (P < .05) the asymptotic GP of oat grain and soybean meal, without affecting the rate of GP or lag time of both. Yeast treatment improved fermentation of feeds with higher effects on concentrates compared to forage. It was concluded that concentrate feeds had higher nutritive value than forages commonly fed to horses

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Larson, William Kalvin. "The Effect of Variable Seed-Borne Inoculum Load of Dickeya dianthicola on Performance and Infection of Field Grown Potatoes." Thesis, North Dakota State University, 2020. https://hdl.handle.net/10365/32039.

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Field experiments were conducted at Live Oak, Florida, and Rhodesdale, Maryland, to evaluate the effect of variable seed-borne inoculum load of Dickeya dianthicola on potato plant emergence, plant growth throughout the growing season, disease prevalence in the field throughout the growing season, yield and grade, and transmission of D. dianthicola to progeny tubers. No statistically significant differences in emergence, plant height, or disease incidence were observed at either location. Statistically significant differences were observed in yield at the Florida location; all inoculated treatments had significantly lower yield than the non-inoculated control. No significant differences in yield were observed among treatments at the Maryland location. No significant differences in grade were observed at the Florida location. Significant differences in one tuber profile category were observed at the Maryland location. No significant differences in transmission of D. dianthicola to progeny tubers were observed at the Florida and Maryland locations.

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Books on the topic "Effet inoculum"

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Love, Connie Sue. Effect of depth of burial of inoculum and soil pH on cephalosporium stripe of wheat. 1986.

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Book chapters on the topic "Effet inoculum"

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Svenning, M. M., K. E. Eilertsen, J. Gudmundsson, and P. Leinonen. "Effect of Inoculum Composition on Plant Production and Nodule Occupancy in the Field." In Biological Nitrogen Fixation for the 21st Century. Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5159-7_402.

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Fatima, Zarrin, A. Bano, and M. Aslam. "Effect of plant growth regulators and Rhizobium inoculum on N2-fixation and yield of chickpea." In Nitrogen Fixation with Non-Legumes. Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5232-7_13.

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Urquhart, L., N. J. J. Mienie, and P. L. Steyn. "The Effect of Temperature, Storage Period and Inoculum Concentration on Symptom Development and Survival of Ralstonia solanacearum in Inoculated Tubers." In Bacterial Wilt Disease. Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-662-03592-4_53.

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Warren, H. E., and C. Hale. "Effect of inoculation of laminitic-prone, equine faecal inocula with varying forage sources with or without live yeast (Saccharomyces cerevisiae) on in vitro gas production parameters." In Forages and grazing in horse nutrition. Wageningen Academic Publishers, 2012. http://dx.doi.org/10.3920/978-90-8686-755-4_40.

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Wright, D. A., K. Killham, L. A. Glover, and J. I. Prosser. "The effect of location in soil on protozoal grazing of a genetically modified bacterial inoculum." In Soil Structure/Soil Biota Interrelationships. Elsevier, 1993. http://dx.doi.org/10.1016/b978-0-444-81490-6.50052-2.

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Lumyong, S., K. K. Bhattarai, and E. P. Taiganidess. "SLUDGE COMPOSTING IN OPEN WINDROW PILES: PREDOMINANT FUNGI AND EFFECT OF SLUDGE AGE AND INOCULUM." In Water Pollution Control in Asia. Elsevier, 1988. http://dx.doi.org/10.1016/b978-0-08-036884-9.50062-4.

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Messner, N., K. Reardon, A. Pruden, L. Pereyra, and C. Sans Maz√≥n. "Effect of inocula on heavy metal removal by sulfate-reducing columns." In Tailings and Mine Waste '04. Taylor & Francis, 2004. http://dx.doi.org/10.1201/9780203021637.ch25.

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Conference papers on the topic "Effet inoculum"

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Setty, Yelamarthi Pydi, and Katuri Srivani. "Effect of Inoculum Age and Volume on Microbial Production of Xylitol." In 14th Asia Pacific Confederation of Chemical Engineering Congress. Research Publishing Services, 2012. http://dx.doi.org/10.3850/978-981-07-1445-1_230.

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Goswami, G., S. Chaudhuri, and D. Dutta. "Effect of pH and inoculum percentage on canthaxanthin production by Dietzia maris." In Proceedings of the III International Conference on Environmental, Industrial and Applied Microbiology (BioMicroWorld2009). WORLD SCIENTIFIC, 2010. http://dx.doi.org/10.1142/9789814322119_0069.

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Khan, Mohamed F. R., Somwattie P. Desouza, Jacob L. Wildman, and Aaron L. Carlson. "Effect of depth of inoculum placement on development of Rhizoctonia solani on sugar beet." In American Society of Sugarbeet Technologist. ASSBT, 2011. http://dx.doi.org/10.5274/assbt.2011.109.

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Hamdiyati, Yanti, Kusnadi, and Lia Amelia Yuliani. "Effect of Monascus purpureus inoculum concentration on pigment production in jackfruit seed flour substrate." In PROCEEDINGS OF INTERNATIONAL SEMINAR ON MATHEMATICS, SCIENCE, AND COMPUTER SCIENCE EDUCATION (MSCEIS 2015). AIP Publishing LLC, 2016. http://dx.doi.org/10.1063/1.4941147.

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Fitri, Maulida, and Cindy Rianti Priadi. "The effect of acetate additives on inoculum on VS, COD and microbial communities on food waste anaerobic digestion." In INTERNATIONAL CONFERENCE ON EMERGING APPLICATIONS IN MATERIAL SCIENCE AND TECHNOLOGY: ICEAMST 2020. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0003725.

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Sutrawati, Mimi, Sri Hendrastuti Hidayat, Bonny Purnomo Wahyu Soekarno, and Ali Nurmansyah. "Effect of Initial Inoculum Level of Cowpea mild mottle Carlavirus on Mottle Disease Development and Yield of Soybean." In International Seminar on Promoting Local Resources for Sustainable Agriculture and Development (ISPLRSAD 2020). Atlantis Press, 2021. http://dx.doi.org/10.2991/absr.k.210609.005.

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Miu, Lucretia, Rodica Roxana Constantinescu, Alpaslan Durmus Kaya, et al. "Aspects regarding the effectiveness of volatile oils of the Tanacetum vulgare kind in the conservation of heritage objects." In The 8th International Conference on Advanced Materials and Systems. INCDTP - Leather and Footwear Research Institute (ICPI), Bucharest, Romania, 2020. http://dx.doi.org/10.24264/icams-2020.v.5.

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The paper refers to a composition with antifungal and antibacterial effect in order to test new materials for preserving heritage objects on collagen support with bactericidal/antifungal role, essential oils-based from Vetrice (Tanacetum vulgare, Compositae family), having antifungal and antibacterial properties. The biocidal effect of plant extracts is due to the presence of constituent agents, such as alcohols, ethers, phenols, aldehydes, ketones, which makes them extremely effective against a wide range of microbial strains. The essential oil was obtained by boiling the plants through continuous hydrodistillation with Clevenger refrigerant. The testing of the antimicrobial efficiency of the plant extracts was performed on two strains of pathogenic fungi, respectively Trichophyton interdigitale and Epidermophyton floccosum. The microbial inoculum was mixed with the plant extract from various sources (leaves, flowers and mixed flower-leaves). All extracts were tested in duplicate according to the specific test standards, and the results were expressed as a mean percentage and logarithmic reduction between the readings on the two Petri plates corresponding to each sample. To quantify the antimicrobial efficacy, the degree of microbial and logarithmic reduction of each sample was calculated, relative to the initial cell concentration. The results of antimicrobial tests showed a high antifungal character of the extracts obtained from flowers, leaves and mixed flower-leaves.

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Aridis, Daffa Ramadhan, Luthfi Meizar Pradana, Rita Arbianti, and Tania Surya Utami. "The effect of pH of the medium and inoculum volume variations on the enrichment of unsaturated fatty acid in rice bran oil by solid fermentation method using Aspergillus terreus." In THE 5TH INTERNATIONAL TROPICAL RENEWABLE ENERGY CONFERENCE (THE 5TH iTREC). AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0063722.

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Khan, Mohamed F. R., Aaron L. Carlson, Gary A. Secor, Viviana V. Rivera, and Melvin D. Bolton. "Effect of fungicides on disease control, yield and quality of sugar beet inoculated with different sources of Cercospora beticola inocula." In American Society of Sugarbeet Technologist. ASSBT, 2011. http://dx.doi.org/10.5274/assbt.2011.44.

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Abdurashytov, S. F., E. V. Puzanova, K. S. Gritsevich, A. A. Zubochenko, and V. K. Zakharova. "Study of the development of arbuscular mycorrhizal fungi in the saline soils of Crimea." In РАЦИОНАЛЬНОЕ ИСПОЛЬЗОВАНИЕ ПРИРОДНЫХ РЕСУРСОВ В АГРОЦЕНОЗАХ. Federal State Budget Scientific Institution “Research Institute of Agriculture of Crimea”, 2020. http://dx.doi.org/10.33952/2542-0720-15.05.2020.25.

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It is known that arbuscular mycorrhiza (AM) fungi are able to mitigate the effect of various negative environmental factors on plants. Therefore, the aim of our research was to determine the most active AM fungi populations in saline soils of the Crimean Peninsula to select stress-resistant isolates. The spores were isolated by wet sieving. Mycorrhization was visualized by staining with black ink and studied quantitatively under a stereomicroscope. In 2019, 15 soil-plant samples from 4 locations of the salinity soils were sampled: Lake Achi (AB) and the nearby agrocenosis (PAB), Koyashskoye (KO), Kirkoyashskoye (PKP) and agrocenosis near it (KP), Chokrak (CH). The highest content of chlorine anions (119.5 mg) and bicarbonate anions (610.0 mg) was noted in the area near Lake Kirkoyashskoye. The smallest salinity was observed at arable land KP (8.5 and 229.0 mg). Plowing led to a decrease in the number of AM fungi spores in the studied sections of PAB by 80.3% and KP by 47.6% compared with the AB and PKP. The frequency of occurrence and the intensity of mycorrhizal colonization in plant roots on the shores of Lakes Achi and Kirkoyashskoye were 70.0-72.3% and 28.0-43.9%, while the same for the plowing areas around them were lower by 28.5-54.1% and 18.0-32.2%, respectively. In our study, there was no strict correlation between the number of spores and the estimated environmental conditions. Soil-plant samples and the spores isolated from them were used as inoculums for obtaining new AM fungal isolates with a stress resistance property.

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