PSX-B-20 Effect of shifting from forage to high grain diet on chewing, feed sorting and lying behavior of cows supplemented with or without a phytogenic additive

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 219-220
Author(s):  
Ezequias Castillo-Lopez ◽  
Raul Rivera-Chacon ◽  
Sara Ricci ◽  
Nicole Reisinger ◽  
Qendrim Zebeli
Keyword(s):  
Fixed Effects ◽  
Control Diet ◽  
Random Effect ◽  
Covariance Structure ◽  
Feed Additive ◽  
Diet Change ◽  
Effect Data ◽  
First Order ◽  
Selection For

Abstract The aim was to evaluate the effect of changing from forage to a high grain diet on chewing, feed sorting and lying behavior of cows supplemented with or without a phytogenic feed additive. Nine cows were blocked in two groups and used in a change-over design. Each experimental run consisted of one week of forage feeding, one week of diet transition, and four weeks of high grain feeding (65% concentrate). During the washout period of 10 weeks between the two runs, cows grazed on pasture. Cows were fed either a control diet (CON) or a diet with a phytogenic additive (PHY) based on menthol, thymol and eugenol. Data on chewing, feed sorting and lying behavior were analyzed using SAS with week of feeding and supplementation as fixed effects, and cow as random effect. Data across weeks from the same cow were processed using a first order variance-covariance structure matrix taking into account that the covariance decays with time. We found a reduction (P < 0.01) in rumination time by 53% with diet change. Within the high grain feeding, rumination reached lowest value in the second week (160 min/d). The high grain diet increased (P < 0.01) selection for long size particles by 20%. Although lying time was not affected immediately after diet change, it increased (P < 0.01) by 8% from the second week of high grain consumption. In the fourth week of grain feeding, there was a tendency for PHY to increase rumination (P = 0.07) and total chewing time (P = 0.10), but with no effect on sorting for fiber or lying time. The high grain diet decreased chewing and standing time, and increased sorting for fibrous ingredients especially after one week of feeding. The phytogenic feed additive may contribute to stimulate chewing in long term supplementation.

Gestational Hypertension and Their Impact on Activin A Concentration of the Human Milk

2021 ◽  
Author(s):  
Chiara Peila ◽  
Elena Spada ◽  
Alessandra Coscia ◽  
Stefano Sottemano ◽  
Giulia Fregnan ◽  
...  
Keyword(s):  
Breast Milk ◽  
Human Milk ◽  
Fixed Effects ◽  
Gestational Hypertension ◽  
Random Effect ◽  
Covariance Structure ◽  
Study Groups ◽  
Activin A ◽  
Mature Milk ◽  
Significant Difference

Abstract Introduction It is known that Preeclampsia affects the lactogenesis, but literature data on the effects of this syndrome on the neurobiomarkers composition and Activin A of Human Milk of the lactating mother are not available. The aim of this study is to investigate the effects of this gestational pathology on Activin A levels, a neurobiomarker known to play an important role in the development and protection of the central nervous system.Methods The women recruited in the study were divided in two different study groups: preeclamptic or healthy women. All the breast milk samples were collected using the same procedure into sterile devices BPA-free. Activin A was quantified using an ELISA test. To investigate the effect of pathology in the Activin a concentration in the 3 phases, mixed linear model with unistructural covariance structure, mother as random effect, and fixed effects were performed.Results Activin A was detected in all samples. There were no significant differences between Preeclamptic mother and Normotensive women. The only significant effect is related to the HM phase: in particular, it is significant the difference between colostrum and mature milk (p<0.01).Conclusion There is not any significant difference in Activin A breast milk composition from hypertensive and normotensive women. This result allows us to affirm that breast milk beneficial properties are maintained even if gestational hypertension occurs.

289 Phytogenic Feed Additives as a Potential Strategy to Mitigate the Negative Effects of Heat Stress in Growing Heifers

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 156-157
Author(s):  
Shelby M Ramirez ◽  
Janaka Wickramasinghe ◽  
Nadiia Stepanchenko ◽  
Maria Oconitrillo ◽  
Jayamuni Silva ◽  
...  
Keyword(s):  
Heat Stress ◽  
Fixed Effects ◽  
Recovery Period ◽  
Random Effect ◽  
Antioxidant Properties ◽  
Feed Additives ◽  
Feed Additive ◽  
Negative Effects ◽  
Humidity Index ◽  
Potential Strategy

Abstract Phytogenic feed additives that contain anti-inflammatory and antioxidant properties may have potential to reduce inflammation and oxidation observed during bouts of heat stress. The trial objective was to determine the effects of a phytogenic feed additive on markers of stress in heifers subjected to diurnal heat stress (dHS). Eighteen Holstein and four Jersey heifers (5–6 months of age; d1 BW=205±9 kg) were assigned to two dietary treatments (n = 11) based on breed and age; 1) a basal TMR diet (CTL), 2) CTL supplemented with 0.25 g/head/d of a proprietary blend of phytogenics (PFA; BIOMIN America, Inc., Overland Park, KS). Heifers were housed individually and fed their respective treatments for 14d prior to dHS (d-14-1), subjected dHS (d1-7), and followed through a recovery period (d8-11). Weights were collected at d1 (baseline), d7 (end of dHS), and d11 (end of recovery). The temperature set point was assigned at 33°C from 0900 to 2100 h and allowed to equilibrate with outside temperature during night (24°C) for a total of 7d dHS. Total DMI (tDMI) and DMI from 0900 to 2100 h (hsDMI) were recorded daily. Serum was collected at d1, 2, 7 and 11 to determine effect of treatment on markers of oxidation, inflammation, and stress. Treatment effects were analyzed using PROC MIXED in SAS with treatment and time as fixed effects and heifer as a random effect. Temperature humidity index during dHS was greater during the day (84.5) versus night (73.3). There were no treatment differences (P&gt;0.05) in d 0–11 on ADG, ADFI, or GF between treatments. However, PFA numerically increased hsDMI, reduced (P&lt; 0.05) haptoglobin and tended to reduce (P&lt; 0.10) lipopolysaccharide binding protein compared with CTL. Overall, dietary PFA may be a potential strategy to mitigate the stresses that heifers experience during dHS.

scholarly journals Long-Term Testosterone Therapy Improves Cardiometabolic Function and Reduces Risk of Cardiovascular Disease in Men with Hypogonadism

2017 ◽  
Vol 22 (5) ◽  
pp. 414-433 ◽  
Author(s):  
Abdulmaged M. Traish ◽  
Ahmad Haider ◽  
Karim Sultan Haider ◽  
Gheorghe Doros ◽  
Farid Saad
Keyword(s):  
Repeated Measures ◽  
Fixed Effects ◽  
Random Effect ◽  
Treated Group ◽  
Myocardial Infarctions ◽  
Control Group ◽  
Cv Disease ◽  
High Level ◽  
Changes Over Time

Objectives: In the absence of large, prospective, placebo-controlled studies of longer duration, substantial evidence regarding the safety and risk of testosterone (T) therapy (TTh) with regard to cardiovascular (CV) outcomes can only be gleaned from observational studies. To date, there are limited studies comparing the effects of long-term TTh in men with hypogonadism who were treated or remained untreated with T, for obvious reasons. We have established a registry to assess the long-term effectiveness and safety of T in men in a urological setting. Here, we sought to compare the effects of T on a host of parameters considered to contribute to CV risk in treated and untreated men with hypogonadism (control group). Patients and Methods: Observational, prospective, cumulative registry study in 656 men (age: 60.7 ± 7.2 years) with total T levels ≤12.1 nmol/L and symptoms of hypogonadism. In the treatment group, men (n = 360) received parenteral T undecanoate (TU) 1000 mg/12 weeks following an initial 6-week interval for up to 10 years. Men (n = 296) who had opted against TTh served as controls. Median follow-up in both groups was 7 years. Measurements were taken at least twice a year, and 8-year data were analyzed. Mean changes over time between the 2 groups were compared by means of a mixed-effects model for repeated measures, with a random effect for intercept and fixed effects for time, group, and their interaction. To account for baseline differences between the 2 groups, changes were adjusted for age, weight, waist circumference, fasting glucose, blood pressure, and lipids. Results: There were 2 deaths in the T-treated group, none was related to CV events. There were 21 deaths in the untreated (control) group, 19 of which were related to CV events. The incidence of death in 10 patient-years was 0.1145 in the control group (95% confidence interval [CI]: 0.0746-0.1756; P < .000) and 0.0092 in the T-treated group (95% CI: 0.0023-0.0368; P < .000); the estimated difference between groups was 0.0804 (95% CI: 0.0189-0.3431; P < .001). The estimated reduction in mortality for the T-group was between 66% and 92%. There were also 30 nonfatal strokes and 26 nonfatal myocardial infarctions in the control group and none in the T-treated group. Conclusion: Long-term TU was well tolerated with excellent adherence suggesting a high level of patient satisfaction. Mortality related to CV disease was significantly reduced in the T-group.

scholarly journals Dietary osteopontin-enriched algal protein as nutritional support in weaned pigs infected with F18-fimbriated enterotoxigenic Escherichia coli

2020 ◽  
Vol 98 (10) ◽  
Author(s):  
Brooke N Smith ◽  
Melissa Hannas ◽  
Catiane Orso ◽  
Simone M M K Martins ◽  
Mei Wang ◽  
...  
Keyword(s):  
Community Structure ◽  
Microbial Community ◽  
Microbial Community Structure ◽  
Fixed Effects ◽  
Control Diet ◽  
Random Effect ◽  
Enterotoxigenic Escherichia Coli ◽  
Weaned Pigs ◽  
Inflammatory Status ◽  
Α Diversity

Abstract This study investigated the effects of dietary osteopontin (OPN)-enriched algal protein on growth, immune status, and fecal fermentation profiles of weaned pigs challenged with a live infection of F18-fimbriated enterotoxigenic E. coli (ETEC). At 21 d of age, 54 pigs (5.95 ± 0.28 kg BW; blocked by BW) were allotted to 1 of 3 experimental groups combining dietary and health statuses. A control diet, containing 1% wild-type algal protein, was fed to both sham-inoculated (NC) and ETEC-inoculated (PC) pigs, while the test diet contained 1% OPN-enriched algal protein as fed only to ETEC-inoculated pigs (OA). All pigs received their assigned dietary treatment starting at study initiation to permit a 10-d acclimation period prior to inoculation. Growth performance, fecal dry matter, as well as hematological, histopathological, immune, and microbiota outcomes were analyzed by ANOVA, where treatment and time were considered as fixed effects and pig as a random effect; significance was accepted at P &lt; 0.05. Overall, ETEC-inoculated pigs (PC and OA) exhibited decreased (P &lt; 0.05) ADG and G:F, as well as increased (P &lt; 0.05) peripheral blood helper T-cells and total leukocyte counts, compared with NC pigs during the postinoculation period. The OA treatment also elicited the highest (P &lt; 0.05) concentrations of circulating tumor necrosis factor-α and volatile fatty acid concentrations in luminal contents at various postinoculation time-points, compared with other treatments. A principal coordinate analysis based on Unifrac weighted distances indicated that NC and OA groups had similar overall bacterial community structures, while PC pigs exhibited greater diversity, but infection status had no impact on α-diversity. Osteopontin-specific effects on microbial community structure included enrichment within Streptococcus and Blautia genera and decreased abundance of 12 other genera as compared with PC pigs. Overall, ETEC-infected pigs receiving 1% OPN-enriched algal protein exhibited changes immunity, inflammatory status, and colonic microbial community structure that may benefit weanling pigs experiencing F18 ETEC infection.

323 Effect of an Acidogenic Diet with Phytogenic Supplementation on in Situ Degradability of Corn and Wheat Grain, and Grass Silage in Dairy Cows

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 174-174
Author(s):  
Raul Rivera-Chacon ◽  
Sara Ricci ◽  
Nicole Reisinger ◽  
Qendrim Zebeli ◽  
Ezequias Castillo-Lopez
Keyword(s):  
Dairy Cows ◽  
Fixed Effects ◽  
Dry Matter ◽  
Production Systems ◽  
Random Effect ◽  
Feed Additive ◽  
Wheat Grain ◽  
Ruminal Acidosis ◽  
Grass Silage

Abstract Modern dairy production systems require larger inputs of energy in diets to increase milk yield. Therefore, dairy cows are at risk of experiencing subacute ruminal acidosis (SARA). The objective of this study was to evaluate grains and forage rumen degradability in cows fed different diets supplemented with a phytogenic (PHY) feed additive. The experiment was conducted with nine rumen-cannulated non-lactating Holstein cows blocked in two groups of four and five animals, and were part of a cross-over design. This study consisted in 2 runs separated by a 12-week washout period, in which cows grazed on pasture. Each experimental run had one week of forage (F) feeding, one week of transition to a high grain (HG) diet, and four weeks of HG (65:35 concentrate to forage ratio in dry matter basis). Cows were supplemented with PHY (a blend of menthol and thymol) or a control carrier (CON) from week F. Corn and wheat grain were ground through a 4 mm screen, while grass silage was ground through a 6 mm screen. Sampling for in situ degradability was performed in F and in week four of HG diet. Data were analyzed with SAS with week of feeding and supplementation as fixed effects and cow as random effect. Corn and wheat 24-h dry matter (DM) and organic matter (OM) degradability increased during HG diet compared with F (P &lt; 0.05), grass silage DM and OM 48-h degradability was reduced by HG diet compared to F (P &lt; 0.01). Additionally, wheat grain 24-h OM degradability was higher for PHY compared to CON under F and HG diet conditions (P = 0.05). Overall, diet composition and SARA conditions can influence grains and fiber degradability in the rumen.

scholarly journals Effects of Long-Term Supplementation with Brown Seaweeds and Polyphenols in Rabbit on Meat Quality Parameters

Animals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2443
Author(s):  
Raffaella Rossi ◽  
Francesco Vizzarri ◽  
Sabrina Ratti ◽  
Marisa Palazzo ◽  
Donato Casamassima ◽  
...  
Keyword(s):  
Growth Performance ◽  
Meat Quality ◽  
Control Diet ◽  
Brown Seaweed ◽  
Quality Parameters ◽  
Feed Additive ◽  
Feed Conversion ◽  
Brown Seaweeds ◽  
Natural Mixture

The objective of the present study was to evaluate the effects of dam and offspring dietary supplementation with a natural feed additive on the growth performance and meat quality parameters of growing rabbits. The growing rabbits are selected from lactating does receiving a control diet (C) or diets supplemented with 0.3% (SP1) and 0.6% (SP2) of feed additive containing brown seaweeds (Laminaria spp.) and plant extracts. In the postweaning phase, the growing rabbits remained in the treatment group defined by their does and the trial lasted 42 days. The average daily feed intake and feed conversion ratio were improved in the rabbit fed 0.6% of the natural feed additive. The cholesterol content tended to be lower in Longissimus lumborum (LL) muscle and decrease in Semimembranosus (SM) muscle (in SP2 −41.36% than controls). The α tocopherol and retinol content were enhanced in both muscles of rabbit fed the natural mixture (SP1 and SP2 groups). An improvement of sensory attributes of texture was observed in both muscles from rabbit fed natural mixture. In conclusion, long term supplementation of both lactating does and offspring with the high dosage of brown seaweed and plant polyphenols improves growth performance and enhances meat nutritional and sensory parameters.

scholarly journals Effects of incremental exercise and dietary tryptophan supplementation on the amino acid metabolism, serotonin status, stool quality, fecal metabolites, and body composition of mid-distance training sled dogs

2020 ◽  
Vol 98 (5) ◽  
Author(s):  
James R Templeman ◽  
Emma Thornton ◽  
Cara Cargo-Froom ◽  
Eli J Squires ◽  
Kelly S Swanson ◽  
...  
Keyword(s):  
Body Composition ◽  
Fixed Effects ◽  
Control Diet ◽  
Random Effect ◽  
Post Exercise ◽  
Nutritional Interventions ◽  
Sled Dogs ◽  
Exercise Regimen ◽  
Composition Optimization ◽  
Exercise Induced

Abstract Exercise improves the health of dogs; however, the extreme exertion experienced by sled dogs may lead to variable metabolic and fecal characteristics. Nutritional interventions, such as dietary tryptophan (Trp), may reduce the prevalence of these exercise-induced disturbances. Sporting diets tend to have high crude protein concentrations in contrast to adult maintenance diets and this results in less Trp relative to other amino acids (AA). Therefore, sporting dogs represent an ideal cohort to assess the effects of supplemental Trp. The objective was to evaluate the effects of supplemental dietary Trp and an incremental training regimen on AA and serotonin status, fecal scores and metabolites, and body composition in client-owned Siberian huskies. Sixteen dogs (nine females and seven males) were used, with a mean age of 4.8 ± 2.5 yr and body weight (BW) of 24.3 ± 4.3 kg. Dogs were blocked for sex, age, and BW and randomly allocated into two groups with eight fed a dry extruded control diet (Ctl) and eight fed Ctl supplemented with Trp to reach a Trp:large-neutral AA (LNAA) ratio of 0.075:1 (treatment, Trt). The exercise regimen was designed to increase in distance each week, but weather played a role in setting the daily distance. Each week BW was recorded and food allotments were adjusted to maintain initial BW. Pre and post-exercise blood samples were taken every 3 wk, dogs then received a meal followed by 1, 2, and 4 h post meal blood collections (serum AA, serotonin). Stool collection and scoring occurred each week and body composition was measured on weeks −1 and 11. Serotonin, AA, fecal metabolite, and body composition data were analyzed using PROC MIXED of SAS with dog as a random effect and week and Trt as fixed effects. Stool score data were analyzed using PROC FREQ to compare stool score and Trt, and PROC CORR was used to analyze associations between fecal score, temperature, humidity, and run distance. Dogs on Trt had greater fasted Trp compared with baseline, greater post-meal Trp and serotonin compared with baseline, greater post-meal Trp compared with fasted, and greater post-meal Trp and serotonin compared with Ctl (P &lt; 0.05). Fecal data indicated that Trp improved stool scores (P &lt; 0.05) yet had no effect on fecal metabolites. An overall increase in lean and decrease in fat mass was found (P &lt; 0.05), but Trt had no effect on body composition. Optimization of the dietary Trp:LNAA ratio may help to improve GI health without compromising performance in actively training sled dogs.

scholarly journals A random effects population dynamics model based on proportions-at-age and removal data for estimating total mortality

2012 ◽  
Vol 69 (11) ◽  
pp. 1881-1893 ◽  
Author(s):  
Verena M. Trenkel ◽  
Mark V. Bravington ◽  
Pascal Lorance
Keyword(s):  
Population Dynamics ◽  
Random Effects ◽  
Fixed Effects ◽  
Random Effect ◽  
Total Mortality ◽  
Estimation Bias ◽  
Effective Sample Size ◽  
Dynamics Model ◽  
Population Dynamics Model ◽  
Study Parameter

Catch curves are widely used to estimate total mortality for exploited marine populations. The usual population dynamics model assumes constant recruitment across years and constant total mortality. We extend this to include annual recruitment and annual total mortality. Recruitment is treated as an uncorrelated random effect, while total mortality is modelled by a random walk. Data requirements are minimal as only proportions-at-age and total catches are needed. We obtain the effective sample size for aggregated proportion-at-age data based on fitting Dirichlet-multinomial distributions to the raw sampling data. Parameter estimation is carried out by approximate likelihood. We use simulations to study parameter estimability and estimation bias of four model versions, including models treating mortality as fixed effects and misspecified models. All model versions were, in general, estimable, though for certain parameter values or replicate runs they were not. Relative estimation bias of final year total mortalities and depletion rates were lower for the proposed random effects model compared with the fixed effects version for total mortality. The model is demonstrated for the case of blue ling (Molva dypterygia) to the west of the British Isles for the period 1988 to 2011.

scholarly journals 77 The effect of naturally occurring levels of multiple mycotoxins on growth performance and carcass parameters of grow-finish pigs

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 54-55
Author(s):  
Leigh Ruckman ◽  
Stacie Gould ◽  
John Patience
Keyword(s):  
Growth Performance ◽  
Economic Impact ◽  
Environmental Conditions ◽  
Fixed Effects ◽  
Control Diet ◽  
Naturally Occurring ◽  
Carcass Parameters ◽  
Low Levels ◽  
Dietary Treatments ◽  
Over Time

Abstract Mycotoxins may not be an issue every year, but the proper environmental conditions can cause a spike in contaminated grains and cause severe economic impact on pork producers. The objective of this study was to determine the effect of naturally occurring infections of deoxynivalenol, zearalenone and fumonisins (DZF) on growth performance and carcass parameters in grow/finish pigs. One hundred pigs (BW 34.0 ± 0.9 kg; L337 × Camborough, PIC, Hendersonville, TN) were randomly assigned to 1 of 2 dietary treatments with 10 split-sex pens/treatment. The control diet (CTL) contained low levels of DZF and the CTL+DFZ diet contained high levels of DZF. Diets were fed in 4 phases over the 126-d experiment period. The CTL diet contained 1.6, 1.6, 1.8 and 1.2 mg deoxynivalenol/kg and CTL+DZF contained 9.2, 6.9, 5.8 and 3.8 mg deoxynivalenol/kg in the 4 diet phases, respectively. The CTL contained 0.30, 0.32, 0.51 and 0.32 mg zearalenone/kg and 0.7, 0.8, 0.8 and 0.9 mg total fumonisins/kg; CTL+DFZ contained 0.59, 0.72, 0.86 and 0.57 mg zearalenone/kg and 1.0, 1.1, 1.2 and 0.9 mg total fumonisins/kg for phases one through four, respectively. Data were analyzed using PROC MIXED of SAS (9.4) with treatment, sex, and their interaction as fixed effects. Compared to CTL, feeding CTL+DFZ decreased final BW (130.3 vs 120.5 kg; P&lt; 0.001), ADG (0.95 vs 0.79 kg/d; P&lt; 0.001), ADFI (2.73 vs 2.49 kg/d; P=0.016), and G:F (0.35 vs 0.32; P=0.043). Feeding CTL+DFZ decreased HCW (92.3 vs 89.4 kg; P=0.024) and increased dressing percentage (70.9 vs 74.3%; P=0.009) and tended to reduce loin depth (7.0 vs 6.8 cm; P=0.057) compared to CTL. Diet did not affect backfat depth or lean percentage (P &gt;0.10). In conclusion, diets naturally contaminated with multiple mycotoxins reduced growth performance and adversely affected carcass parameters; pigs did not adapt over time to the mycotoxins.

scholarly journals Dietary Interventions to Prevent High Fructose Diet-associated Worsening of Colitis and Colitis-associated Tumorigenesis in Mice

2021 ◽  
Author(s):  
Ryohei Nishiguchi ◽  
Srijani Basu ◽  
Hannah A Staab ◽  
Naotake Ito ◽  
Xi Kathy Zhou ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Control Diet ◽  
Experimental Colitis ◽  
Protective Effects ◽  
Diet Change ◽  
Chronic Colitis ◽  
Acute Colitis ◽  
High Fructose Diet ◽  
High Consumption ◽  
High Fructose

Abstract Diet is believed to be an important factor in the pathogenesis of Inflammatory Bowel Disease. High consumption of dietary fructose has been shown to exacerbate experimental colitis, an effect mediated through the gut microbiota. This study evaluated whether dietary alterations could attenuate the detrimental effects of a high fructose diet (HFrD) in experimental colitis. First, we determined whether the pro-colitic effects of a HFrD could be reversed by switching mice from a HFrD to a control diet. This diet change completely prevented HFrD-induced worsening of acute colitis, in association with a rapid normalization of the microbiota. Second, we tested the effects of dietary fiber, which demonstrated that psyllium was the most effective type of fiber for protecting against HFrD-induced worsening of acute colitis, compared to pectin, inulin or cellulose. In fact, supplemental psyllium nearly completely prevented the detrimental effects of the HFrD, an effect associated with a shift in the gut microbiota. We next determined whether the protective effects of these interventions could be extended to chronic colitis and colitis-associated tumorigenesis. Using the azoxymethane/dextran sodium sulfate model, we first demonstrated that HFrD feeding exacerbated chronic colitis and increased colitis-associated tumorigenesis. Using the same dietary changes tested in the acute colitis setting, we also showed that mice were protected from HFrD-mediated enhanced chronic colitis and tumorigenesis, upon either diet switching or psyllium supplementation. Taken together, these findings suggest that high consumption of fructose may enhance colon tumorigenesis associated with long-standing colitis, an effect that could be reduced by dietary alterations.

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