All experimental procedures involving laying hens were reviewed and approved by the Academic Council of Zhangir Khan West Kazakhstan Agrarian and Technical University (Approval No. 7/21/02/2025). The study was conducted in accordance with applicable national directives governing the humane care, handling, housing, and use of animals in agricultural research. The experimental design, animal allocation, husbandry, outcome assessment, and reporting were conducted in accordance with the ARRIVE 2.0 guidelines [26]. Throughout the 30-day experimental period, birds were monitored for clinical abnormalities, feed refusal, and other adverse events.

The 30-day experiment in laying hens was conducted from June 2 to July 2, 2025, at the Veterinary Clinic of the Institute of Veterinary and Agrotechnology, Zhangir Khan West Kazakhstan Agrarian and Technical University, Uralsk, Republic of Kazakhstan.

This study was a controlled, 30-day, parallel-group feeding trial involving 50 Lohmann Brown laying hens naturally infected with A. galli and exposed to dietary mycotoxins. The hens were randomly allocated to an unsupplemented control group (n = 25) or a supplemented experimental group (n = 25). The control group received the basal diet alone, whereas the experimental group received the same basal diet supplemented with the mineral–phytogenic formulation at 170 g/kg basal diet. Blood and fecal samples were collected from individual birds on days 0, 10, 20, and 30.

Hens were eligible for inclusion if they were clinically healthy on veterinary examination, were 26 weeks of age and at the same production stage, originated from the same flock, and were shedding A. galli eggs at screening. No post-allocation exclusion criteria were applied. No birds were lost to follow-up, and no data points were excluded from the analyses [26].

Fifty 26-week-old Lohmann Brown laying hens with natural gastrointestinal helminth infection were randomly allocated to the unsupplemented control group (n = 25) or supplemented experimental group (n = 25). Simple randomization was performed using a computer-generated random-number sequence applied to individual wing-band numbers. The group size of 25 hens was determined by the number of age-matched birds available from a single flock and the available cage capacity.

Birds were housed individually in wire cages in a climate-controlled facility maintained at 20–22°C under a 16-h light/8-h dark photoperiod. Individual housing permitted measurement of feed intake and fecal output for each bird. Because each cage contained one hen, the individual bird and cage represented the same experimental unit, and all measured endpoints were attributable to the same 50 individual hens.

Eggs were collected and counted daily. Hen-day egg production was calculated for each bird over the 7 days preceding each sampling point. Egg weight, shell thickness, shell breaking strength, and yolk color were determined using all eggs produced by each hen over three consecutive days on days 0 and 30, with up to three eggs assessed per hen and the resulting measurements averaged for each bird. Shell thickness was measured at the equator after removal of the shell membrane using a digital micrometer (Mitutoyo Corp., Kawasaki, Japan). Shell breaking strength was determined by quasi-static compression using an Egg Force Reader (ORKA Food Technology Ltd., Ramat Hasharon, Israel), and yolk color was assessed using the Roche yolk color fan (F. Hoffmann-La Roche Ltd., Basel, Switzerland).

Feed batches were coded by an individual who was not otherwise involved in the study. The technician performing FEC, the liquid chromatography–tandem mass spectrometry (LC-MS/MS) operator, and personnel conducting hematological, biochemical, and antioxidant analyses remained blinded to treatment allocation until database lock.

A corn–soybean meal basal diet was formulated to meet National Research Council recommendations for laying hens. Baseline LC-MS/MS analysis confirmed natural contamination of the diet with 20.4 µg/kg AFB1, 5.1 mg/kg DON, and 34.2 µg/kg T-2 toxin. When expressed at 12% moisture, the AFB1 concentration marginally exceeded the maximum permitted concentration of 0.02 mg/kg for complete feedingstuffs for poultry other than young animals specified in Directive 2002/32/EC [27]. The DON concentration marginally exceeded the guidance value of 5 mg/kg for complementary and complete feedingstuffs established in Recommendation 2006/576/EC [28]. The concentration of T-2 toxin alone was approximately one-seventh of the 0.25 mg/kg indicative level established for the combined concentration of T-2 and HT-2 toxins in compound feed under Recommendation 2013/165/EU [29].

The experimental supplement comprised dried pumpkin pulp and peel powder (10%, w/w, as-fed basis), dried pumpkin seed meal (3%), opoka from the Taskala deposit, West Kazakhstan Oblast (1.5%), coquina meal (1.5%), and dried A. absinthium (1.0%). The basal diet provided 2,748 kcal metabolizable energy (ME)/kg and 16.5% crude protein, whereas the experimental diet provided 2,652 kcal ME/kg and 16.2% crude protein (Table 1). Feed and water were provided ad libitum. The potential sorbent capacity of opoka was inferred from its measured surface area and porosity and from previously published in vivo findings in broilers [13]. No feed refusal or selective feeding was observed, and daily dry matter intake did not differ between groups.

Cucurbita maxima Duchesne cv. ‘Mramornaya’ fruits were obtained from a single local producer within one harvest season. The fruits were washed, halved, and separated into pulp, peel, and seeds. The pulp and peel fraction was sliced to a thickness of 5–10 mm and dried at 40–50°C in a forced-convection oven (Binder ED, Binder GmbH, Tuttlingen, Germany) until the residual moisture content was ≤10%. Moisture content was verified gravimetrically according to GOST 31640-2012 [30] and using an infrared moisture analyzer (KERN DBS, KERN & Sohn GmbH, Balingen, Germany). Water activity was <0.60, as determined using an AquaLab 4TE (METER Group, Pullman, WA, USA). The dried pulp and peel fraction and seeds were milled separately using a Retsch ZM 200 mill (Retsch GmbH, Haan, Germany) through 1.0- and 0.5-mm sieves, respectively.

Opoka was jaw-crushed to 15–20 mm and dried at 100–150°C until residual moisture content was ≤7%. This temperature range was selected to remove free water while remaining below temperatures associated with the loss of surface silanol groups through condensation. The dried material was subsequently ball-milled to a particle size of <1.0 mm. X-ray diffraction identified an amorphous opal-CT phase with superimposed quartz reflections. The Brunauer–Emmett–Teller (BET) surface area was 64 m²/g, porosity was 43%–47%, and bulk density was 1,200–1,350 kg/m³. Characterizing the mineral by measurable physicochemical properties rather than a trade name facilitates comparison with commercial mineral binders authorized for use in poultry feed, including bentonite [31], and improves formulation reproducibility. Coquina meal (~95% CaCO₃) obtained from Mangystau Oblast was ground to a particle size of <1.0 mm.

Aerial parts of A. absinthium L. were collected after the first autumn frosts in West Kazakhstan Oblast. Harvest timing was used as a standardization criterion for the phytogenic fraction, analogous to the use of deposit origin and BET surface area for characterization of the mineral fraction. The concentrations of phytochemical constituents in A. absinthium vary according to phenological stage; thujone content decreases by >30% at full bloom compared with earlier stages, absinthin increases from the bud stage to early flowering and subsequently decreases at full bloom, and artemisetin decreases by approximately 25% from the bud stage to full bloom [11]. The plant material was dried at 40–50°C to a moisture content of ≤10% and sequentially processed using a hay chopper, grain crusher, and ball mill to obtain a particle size of <1.0 mm in accordance with GOST ISO 6498-2014 [32]. All prepared powders were stored under nitrogen at 4°C until use.

Individual fresh fecal samples were collected on days 0, 10, 20, and 30 and maintained at 4°C for no longer than 6 h before processing. FEC were determined using the modified McMaster flotation technique with saturated salt solution at a specific gravity of 1.20. The method had an analytical sensitivity of 50 eggs per gram of feces (EPG). Eggs were identified as A. galli by light microscopy based on their ovoid morphology and smooth, thick shell, consistent with the reported dimensions of 72–92 × 45–57 µm.

Each preparation was additionally examined for Heterakis gallinarum, Capillaria spp., Trichostrongylus tenuis, and cestode taxa. No eggs attributable to these taxa and no cestode proglottids were detected at any sampling point.

To account for the intrinsic overdispersion of helminth egg count data, individual EPG measurements were analyzed using a negative binomial generalized linear mixed model (NB-GLMM) [5]. Treatment group and time were included as fixed effects, individual bird identity was included as a random intercept to account for repeated measurements within birds, and fecal dry weight was incorporated as an offset.

Peripheral blood samples were collected longitudinally into serum separator tubes on days 0, 10, 20, and 30. Serum was separated by centrifugation at 2,000 × g for 15 min and stored at −80°C until analysis.

Because avian presystemic metabolism rapidly and extensively biotransforms parent DON through hepatic sulfotransferase activity, measurement of the parent compound alone may provide an incomplete assessment of internal exposure [25]. Serum was therefore analyzed for DON-3S, which has been identified as a major DON metabolite in broiler chickens, pullets, roosters, and turkeys and has previously been quantified in excreta rather than serum [25], together with circulating free AFB1 and T-2 toxin.

Analytes were quantified by isotope-dilution LC-MS/MS using a SCIEX QTRAP 6500+ (SCIEX, Framingham, MA, USA) coupled to a Shimadzu Nexera X2 (Shimadzu Corp., Kyoto, Japan) ultra-high-performance liquid chromatography system. Matrix-matched calibration with stable isotope-labeled internal standards (¹³C₁₇-AFB1, d₃-DON-3S, and d₃-T-2 toxin) was used to correct for matrix-dependent ionization. Analytes were extracted by protein precipitation optimized for low sample volumes. Free AFB1 additionally underwent C18 solid-phase extraction and immunoaffinity concentration to enable quantification in the low-pg/mL range.

The limits of quantification (LOQs) were 0.005 ng/mL for AFB1, 0.10 ng/mL for DON-3S, and 0.05 ng/mL for T-2 toxin. Limits of detection and LOQs corresponded to signal-to-noise ratios of 3:1 and 10:1, respectively, according to ICH Q2(R1). All reported serum AFB1 concentrations (12.3–19.8 pg/mL) exceeded the LOQ. Calibration was linear over concentration ranges of 0.005–1.00 ng/mL for AFB1, 0.10–20.0 ng/mL for DON-3S, and 0.05–10.0 ng/mL for T-2 toxin (r² > 0.996). Recovery against certified reference materials ranged from 91% to 106%. Intra-day and inter-day precision ranged from 4.2% to 6.5% and from 6.1% to 8.3%, respectively, and matrix effects were 92%, 104%, and 88% for the respective analytes.

Hematological parameters, including erythrocyte count (RBC), leukocyte count (WBC), hemoglobin (Hb), hematocrit (Hct), and leukocyte differential counts, including the eosinophil fraction, were determined using an automated veterinary hematology analyzer (Mindray BC-2800Vet, Shenzhen Mindray Bio-Medical Electronics Co., Ltd., Shenzhen, China). Serum total protein, albumin, aspartate aminotransferase (AST), and alanine aminotransferase (ALT) were measured using a Mindray BS-380 biochemical analyzer (Shenzhen Mindray Bio-Medical Electronics Co., Ltd.). Albumin was quantified using the bromocresol green method.

Erythrocyte superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx) activities, expressed per milligram of protein, and serum malondialdehyde (MDA) concentrations were determined using commercial colorimetric kits (Nanjing Jiancheng Bioengineering Institute, Nanjing, China). The assays used kit A001-1-2 for SOD (hydroxylamine method), A007-1-1 for CAT (ammonium molybdate method), A005-1-2 for GPx (5,5′-dithiobis-(2-nitrobenzoic acid), and A003-1-2 for MDA (thiobarbituric acid-reactive substances method). MDA concentrations were expressed as nmol/mL. All assays were performed according to the manufacturer's instructions. Intra-assay and inter-assay coefficients of variation were ≤5.5% and ≤8.2%, respectively.

Total protein used for normalization was quantified by the Coomassie Brilliant Blue G-250 method using kit A045-2-1 (Nanjing Jiancheng Bioengineering Institute, Nanjing, China), with bovine serum albumin as the calibrator. Samples were analyzed in duplicate, and samples from all four time points for each bird were analyzed within the same run to minimize between-run analytical variation.

Statistical analyses were performed using IBM SPSS Statistics version 27.0 (IBM Corp., Armonk, NY, USA) and R version 4.3.2 (R Core Team, Vienna, Austria). Baseline FEC values are presented as median and interquartile range (IQR), whereas continuous variables are presented as mean ± standard deviation (SD).

Repeated measurements were analyzed using mixed-effects linear models, with treatment, time, and the treatment × time interaction included as fixed effects and individual bird included as a random effect. Bonferroni-adjusted post hoc comparisons were performed where appropriate. FEC data were analyzed using an NB-GLMM implemented using the glmmTMB package, with treatment and time as fixed effects, individual bird as a random intercept, and fecal dry weight as an offset. Results are expressed as incidence rate ratios (IRRs) with 95% confidence intervals (CIs). The Benjamini–Hochberg procedure was applied to control the false discovery rate across predefined families of secondary endpoints. Statistical significance was set at p < 0.05.

Baseline fecal egg burdens were comparable between the groups (control: 1,280 EPG, IQR 850–1,810; experimental: 1,265 EPG, IQR 830–1,790; Table 2 and Figure 1). The NB-GLMM dispersion parameter was θ = 1.14. Under the nbinom2 parameterization implemented in glmmTMB, the variance is expressed as σ² = μ(1 + μ/θ) [33]. Accordingly, θ corresponds to the negative binomial dispersion exponent k commonly used in parasitological analyses [5]. The observed value indicated substantial overdispersion of the egg count data relative to a Poisson distribution and supported use of the negative binomial modeling framework.

Median fecal egg shedding in the control group remained relatively stable during the experimental period, increasing from 1,280 EPG on day 0 to 1,420 EPG on day 30. In contrast, the experimental group showed a progressive reduction in fecal egg shedding. Relative to the control group, expected shedding was 25% lower on day 10 (IRR = 0.75; 95% CI = 0.58–0.96), 48% lower on day 20 (IRR = 0.52; 95% CI = 0.36–0.74), and 64.0% lower on day 30 (510 vs. 1,420 EPG; IRR = 0.36; 95% CI = 0.22–0.51; p < 0.001). Thus, by day 30, the expected fecal egg count in supplemented hens was approximately 36% of that observed in controls.

LC-MS/MS analysis demonstrated progressive divergence in circulating mycotoxin biomarkers between the groups during the experimental period (Table 3 and Figure 2). Daily dry matter intake did not differ between the groups at any sampling point.

By day 30, the experimental group had a 37.9% lower serum AFB1 concentration than the control group (12.3 ± 3.2 vs. 19.8 ± 4.5 pg/mL; p = 0.003). DON-3S was 38.8% lower in the experimental group (4.10 ± 0.95 vs. 6.70 ± 1.30 ng/mL; p = 0.001), whereas T-2 toxin was 41.9% lower (50.0 ± 14.0 vs. 86.0 ± 20.0 pg/mL; p = 0.002). Concentrations in the control group remained relatively stable or increased slightly over time, whereas concentrations in the experimental group declined progressively from day 10 onward.

By day 30, the experimental group had higher RBC, Hb, and Hct values than the control group (Table 4 and Figure 3). RBC increased from 2.64 ± 0.30 × 10¹²/L on day 0 to 3.02 ± 0.31 × 10¹²/L on day 30 in the experimental group, whereas the corresponding control value was 2.64 ± 0.28 × 10¹²/L on day 30 (p = 0.012). Hb increased from 102 ± 11 to 117 ± 13 g/L in the experimental group compared with 102 ± 11 g/L in controls on day 30 (p = 0.018). Similarly, Hct increased from 31 ± 3.5% to 36 ± 3.8% in the experimental group compared with 31 ± 3.5% in controls on day 30 (p = 0.014).

WBC decreased from 18.8 ± 3.2 × 10⁹/L on day 0 to 16.1 ± 2.8 × 10⁹/L on day 30 in the experimental group, whereas the control group remained relatively stable at 18.8 ± 3.2 × 10⁹/L on day 30 (p = 0.022). The eosinophil proportion declined from 4.2 ± 1.1% to 2.3 ± 0.8% in the experimental group, compared with 4.2 ± 1.1% in controls on day 30 (p = 0.006). From baseline to day 30, the proportional reduction in eosinophils was 45.2%, compared with a 14.4% reduction in total WBC. The temporal decline in eosinophils occurred in parallel with the reduction in FEC across the four sampling points (Tables 2 and 4).

By day 30, AST and ALT activities were lower in the experimental group than in controls, whereas total protein and albumin concentrations were higher (Table 5 and Figure 4). AST was 160 ± 22 U/L in the experimental group compared with 180 ± 25 U/L in controls (p = 0.021), and ALT was 30 ± 5 versus 36 ± 6 U/L, respectively (p = 0.017). Total protein was 64 ± 7 g/L in the experimental group compared with 56 ± 6 g/L in controls (p = 0.009), whereas albumin was 28 ± 3 versus 24 ± 3 g/L, respectively (p = 0.015). Differences between the groups became progressively more evident from day 10 onward. Albumin values were interpreted as relative indices because albumin was quantified using the bromocresol green assay in avian serum.

Antioxidant enzyme activities also differed between groups by day 30 (Table 5 and Figure 5). Erythrocyte SOD activity was higher in the experimental group than in controls (133 ± 21 vs. 102 ± 18 U/mg protein; p = 0.004). Similarly, CAT activity was 73 ± 11 versus 58 ± 9 U/mg protein (p = 0.006), and GPx activity was 109 ± 15 versus 78 ± 12 U/mg protein (p = 0.001). In contrast, serum MDA concentration was lower in the experimental group than in controls on day 30 (4.2 ± 0.7 vs. 5.8 ± 0.9 nmol/mL; p = 0.002).

Egg production and egg quality parameters were comparable between groups on day 0 (Table 6). By day 30, hen-day production in the experimental group had increased from 86.2% to 93.8%, whereas the control group changed from 86.5% to 85.8% (p < 0.001 for the group × time comparison). Egg weight increased from 57.9 ± 1.3 to 60.8 ± 1.1 g in the experimental group compared with 58.2 ± 1.4 g in controls on day 30 (p < 0.001). Daily egg mass increased from 49.9 ± 1.9 to 57.0 ± 1.6 g/hen in the experimental group, whereas the corresponding control value was 49.9 ± 2.1 g/hen on day 30 (p < 0.001).

Shell thickness increased from 0.350 ± 0.014 mm on day 0 to 0.395 ± 0.010 mm on day 30 in the experimental group, compared with 0.348 ± 0.015 mm in controls on day 30 (p < 0.001). Shell breaking strength increased from 36.2 ± 2.0 to 44.5 ± 1.8 N in the experimental group, whereas the control value was 35.8 ± 2.4 N on day 30 (p < 0.001). Yolk color increased from 6.4 ± 0.4 to 10.5 ± 0.5 Roche units in the experimental group, compared with 6.2 ± 0.4 in controls on day 30 (p < 0.001).

No birds died, were culled, or were removed from the study during the 30-day experimental period, and all 50 hens completed the trial. No feed refusal or selective feeding was observed, and daily dry matter intake did not differ between groups. No adverse clinical signs were observed during the study, including neurological abnormalities potentially relevant to the thujone-containing A. absinthium component.

Fecal egg shedding declined progressively in the supplemented group, reaching 64.0% below the control level by day 30 (IRR = 0.36; 95% CI = 0.22–0.51). This magnitude of reduction falls within the upper range reported for plant-based preparations evaluated in naturally infected poultry. Ethanolic Artemisia extracts have been shown to reduce female worm fecundity, FEC, and worm burdens in infected chicks [35], whereas a seven-plant extract containing A. absinthium achieved a 91.3% overall reduction in FEC but did not reach the 90% efficacy threshold specifically for A. galli [36]. In laying hens, pumpkin seeds provided at 10 g/bird/day did not produce a measurable parasitological effect [34], and neither pumpkin nor Artemisia-based phytogenic preparations reduced worm burdens when evaluated individually at the tested inclusion rates [24].

The stronger response observed with the present multicomponent formulation may therefore reflect complementary actions among the constituent materials rather than the activity of a single ingredient. However, this interpretation is based on comparisons across separate studies and cannot establish synergy or a true matrix effect because the present trial did not include single-component treatment arms [37]. Nevertheless, the sustained reduction in fecal egg shedding may have practical epidemiological relevance because A. galli can persist within poultry production systems and contribute to repeated exposure of successive flocks [38].

By day 30, circulating AFB1, DON-3S, and T-2 toxin concentrations were 37.9%, 38.8%, and 41.9% lower, respectively, in supplemented birds than in controls. These reductions are broadly comparable with decreases in relative oral bioavailability reported for some experimental decontaminants; for example, an algoclay-based intervention in a broiler oral-bolus model reduced the relative bioavailability of DON, ochratoxin A, and AFB1 by 39.9%, 44.3%, and 64.1%, respectively [39].

An important feature of the present feeding design must be considered when interpreting these reductions. Because the supplement was added to the basal diet at 170 g/kg, the concentrations of all basal dietary constituents, including naturally occurring mycotoxins, were diluted by a factor of 1000/1170 = 0.855. Accordingly, estimated complete-diet concentrations decreased to approximately 17.4 µg/kg AFB1, 4.36 mg/kg DON, and 29.2 µg/kg T-2 toxin. Because dry matter intake did not differ between groups, daily mycotoxin intake would therefore have been approximately 14.5% lower in supplemented birds due to dilution alone. Thus, part of the observed decline in circulating biomarkers can be attributed to reduced dietary exposure, and the remaining reduction may reflect additional effects on adsorption, absorption, metabolism, or a combination of these processes.

The DON-3S response is particularly notable because DON is generally considered difficult to adsorb effectively using conventional mineral binders. A broad evaluation of binders found negligible adsorption of DON [40], whereas bentonites have shown strong binding of AFB1 but only limited adsorption of DON [41]. In the present formulation, opoka represented only 1.5% of the basal diet. Consequently, reduced DON-3S concentrations are unlikely to be explained by mineral adsorption alone. One possible explanation is reduced intestinal absorption associated with improved barrier function, since DON at dietary concentrations relevant to poultry can increase paracellular permeability [42], and higher oral doses have been reported to downregulate ZO-1 and claudin-1 expression in brown laying hens [43]. However, the present study did not measure intestinal permeability or tight-junction expression; therefore, this mechanism remains a biologically plausible interpretation rather than a demonstrated pathway.

Hematological responses were characterized by higher RBC, Hb, and Hct values, together with lower WBC and eosinophil values, in supplemented birds. This pattern contrasts with the hematological disturbances commonly associated with A. galli infection, which include reduced erythrocyte indices and increased eosinophilic responses [44]. The eosinophil response was particularly marked, with a 45.2% reduction from baseline compared with a 14.4% reduction in total WBC, and its temporal pattern closely paralleled the decline in fecal egg shedding.

Eosinophils are important cellular components of the host response to gastrointestinal helminths and have been described as prominent early infiltrating leukocytes within the jejunal lamina propria during A. galli infection [45]. The concurrent reductions in eosinophils and fecal egg shedding therefore suggest that the parasitological response was accompanied by attenuation of a systemic cellular response associated with helminth infection. However, because tissue-level inflammatory responses and worm burdens were not directly quantified, the hematological changes should not be interpreted as direct evidence of reduced intestinal inflammation.

Supplemented hens exhibited lower AST and ALT activities, along with higher total protein and albumin concentrations, by day 30. This pattern is opposite to the biochemical profile commonly reported during aflatoxicosis in laying hens, in which AFB1 exposure has been associated with increased hepatic transaminases and MDA and reduced total protein, albumin, and antioxidant enzyme activities [46]. Comparable protective responses have also been reported with multicomponent detoxifying interventions in Lohmann Brown hens exposed to AFB1 and T-2 toxin, including reductions in hepatic and renal toxin deposition [47].

Nevertheless, the observed changes cannot be attributed exclusively to reduced mycotoxin exposure. A. galli infection itself has also been associated with decreases in circulating total protein and albumin [44]. Therefore, the higher protein and albumin concentrations in supplemented hens may reflect combined improvement in nutritional, parasitological, and toxicological status. In addition, no histopathological assessment of hepatic tissue was performed, so the reductions in AST and ALT should be interpreted as biochemical evidence of altered hepatic status rather than direct confirmation of reduced hepatic injury.

Supplementation was associated with higher erythrocyte SOD, CAT, and GPx activities and lower serum MDA concentrations. These concurrent changes suggest improved systemic redox balance because antioxidant enzyme activity increased while a marker of lipid peroxidation decreased. Similar responses have been reported with A. absinthium-derived interventions; A. absinthium essential oil improved erythrocyte antioxidant systems in Eimeria-challenged broilers [48], whereas aqueous extracts restored SOD and GPx activity in experimental liver injury models [49].

Increased antioxidant enzyme activity may reflect either enhanced antioxidant capacity or compensatory upregulation in response to persistent oxidative stress. In the present study, however, the simultaneous reduction in MDA supports the interpretation that the antioxidant response was accompanied by lower lipid peroxidation rather than by compensatory enzyme induction alone. Even so, the specific contribution of individual supplement components cannot be determined because the formulation was evaluated as a combined treatment.

A major contribution of the present study is the consistency of responses across multiple biological domains. In the same 50 individually housed hens, reduced A. galli egg shedding occurred concurrently with lower circulating mycotoxin biomarkers, reduced lipid peroxidation and hepatic enzyme activities, improved erythroid indices, and improved productive performance. Each pathway has been independently linked to one or both experimental stressors. Ascaridia galli infection can impair nutrient utilization and alter energy and lipid metabolism [50], DON can compromise intestinal barrier function [42, 43], and AFB1 is associated with hepatic oxidative injury [46]. The simultaneous improvements across these pathways within a single cohort therefore support the concept that a multicomponent nutritional strategy may provide broader physiological benefits than interventions directed at only one stressor.

Researchers have previously investigated combination approaches in poultry exposed to mycotoxins. Protective responses have been reported in ochratoxin-exposed breeders [51], while combinations of binders and phytobiotics have improved performance during aflatoxin exposure [52]. However, the present study did not include single-component treatment arms or an isocaloric placebo control. Consequently, the trial compares two complete dietary regimens rather than isolating the independent contribution of the supplement itself or each constituent component. Consider this limitation when interpreting the magnitude and mechanism of the observed effects.

The improvements in egg production and egg quality likely arose through more than one mechanism. Yolk color showed the largest relative change among the production-related endpoints, increasing markedly in supplemented hens. This response is plausibly related to the carotenoid-rich pumpkin pulp and peel fraction of the diet. A meta-analysis of 47 studies reported a pooled improvement of 2.11 yolk color units (95% CI = 1.71–2.51) following dietary carotenoid supplementation [53]. Therefore, the increase in yolk pigmentation observed here is consistent with the known pigmentary effects of carotenoid-containing feed ingredients.

The improvements in shell thickness and shell breaking strength are less readily explained by a direct pigmentary or simple mineral-supply effect. The same meta-analysis found no consistent pooled effect of carotenoid supplementation on eggshell thickness [53]. In the present study, estimated calcium supply was also similar between diets because calcium contributed by coquina meal was largely offset by dilution of the basal diet, resulting in approximately 35.5 versus 35.2 g Ca/kg. Improved calcium utilization could therefore be considered as one possible explanation. Interventions that improve villus architecture and intestinal absorptive function in laying hens have been associated with increased calcium retention, calbindin-D28k expression, and improved eggshell characteristics [54, 55]. Relief of mycotoxin-related effects on intestinal or reproductive function may also have contributed [47, 51]. However, intestinal morphology, calcium absorption, calbindin expression, and shell-gland function were not measured; therefore, these mechanisms remain speculative.

Supplemented hens also consumed approximately 10 kcal ME/day less than controls while producing approximately 7.1 g/day more egg mass, corresponding to approximately 14 kcal/day of additional egg output. This pattern is consistent with improved productive efficiency and may reflect reduced physiological costs associated with parasitic infection and mycotoxin exposure [50, 56]. However, because feed energy density differed between the two complete diets and no isocaloric control was included, interpret this observation cautiously and do not consider it direct evidence of improved energetic efficiency attributable solely to the supplement.