Search Results (8,352)

Agricultural by-products and Chinese medicine crop residues, as non-traditional animal feed, have great potential to alleviate the scarcity of traditional feed and reduce the environmental burden. In this study, the effects of adding fermented ginseng by-products to the diet on growth performance, meat quality, flavor characteristics and metabolism of Hongyu roosters were evaluated. A total of 100 Hongyu roosters were randomly assigned to either a control (Con) group fed a basal diet or a fermented ginseng by-products (Fe) group fed a basal diet supplemented with 3% fermented ginseng by-products, with five replicates per group, for 100 days. The results demonstrated that the fermented diet significantly enhanced final body weight and average daily gain (ADG) while reducing the feed conversion ratio (FCR) (p < 0.05). The percentages of breast and thigh muscles and breast muscle fiber diameter were significantly increased. The results also exhibited enhanced water-holding capacity, coupled with significantly decreased shear force and drip loss (p < 0.05). Electronic nose and tongue analyses confirmed enriched meat aroma and optimized taste profiles, which aligned with elevated levels of flavor-precursor amino acids and essential polyunsaturated fatty acids. Serum metabolomics found purine metabolism and the biosynthesis of unsaturated fatty acids to be pivotal pathways. Metabolites related to nucleotide and lipid metabolism were regulated. In conclusion, fermented ginseng by-products serve as an effective functional feed to improve poultry growth performance and meat quality. Full article

Conventional soybean lecithin has limited hydrophilicity, which may restrict its efficacy as a feed emulsifier. This study evaluated graded hydroxylated lecithin supplementation in Jiangnan White geese. Six hundred one-day-old females were allocated to five treatments, with six pens of 20 geese each: a basal diet, 50, 100, or 200 mg/kg hydroxylated lecithin, and 100 mg/kg conventional soybean lecithin. The pen served as the experimental unit (n = 6). After 64 days, all lecithin-supplemented groups had higher final body weight and average daily gain than the control (p < 0.05), whereas 100 and 200 mg/kg hydroxylated lecithin reduced feed conversion ratio (p < 0.05). After false-discovery-rate adjustment within prespecified outcome families, robust treatment effects remained for selected serum indices, leg-muscle shear force, muscle-fibre morphology, inosine monophosphate, several flavour-associated amino acids, selected fatty acid outcomes, and tissue-specific expression of the candidate genes (q < 0.05). Nominal differences in intramuscular fat, carcass traits, body measurements, and several individual fatty acids did not withstand adjustment and were treated as exploratory. The equal-dose comparison did not show a consistent advantage over conventional soybean lecithin. Overall, hydroxylated lecithin elicited endpoint- and dose-dependent responses, but their commercial relevance and underlying mechanisms require confirmation. Full article

Piglets’ early weaning frequently encounters intestinal dysfunction and diarrhea that results in growth retardation and even mortality. We previously found Cortex Phellodendri extract (CPE) could relieve post-weaning piglets’ diarrhea whereas the underlying mechanism remains unclear. Here, to explore the mechanism, 126 piglets were allotted into three groups of seven replicates fed with basal diet, or basal diet + 0.04% CPE, or basal diet + 0.08% CPE. We found 0.04% CPE supplementation effectively decreased piglets’ fecal scores on d7 and d14 post-weaning. In addition, CPE supplementation improved growth performance of early weaning piglets during days 8–14. Further analysis showed CPE supplementation improved the jejunum morphology and increased antioxidant indices, whereas it reduced oxidative metabolites in jejunum tissue. Meanwhile, CPE supplementation increased the mRNA levels of antioxidant indices and anti-inflammatory cytokines but decreased the mRNA levels of inflammatory cytokines. CPE supplementation shifted gut microbiota and increased alpha diversity indices, namely the Observed species and Abundance-Based Coverage Estimator indices. CPE supplementation increased the relative abundances of Proteobacteria, SMB53, Flexispira, and Ruminococcus_gnavus, but decreased the relative abundances of Parabacteroides and Sutterella. The gut microbiota shifted by CPE supplementation has a significant correlation with the early weaning-related indices. Overall, CPE supplementation alleviated intestinal oxidative stress, inflammation, and microbiota dysbiosis in early weaning piglets. Full article

This study investigated the effects of maternal zinc deficiency and post-weaning zinc status on neuroendocrine markers associated with pubertal regulation in female rat offspring. A total of 40 female rats were divided into four groups: zinc deficiency (G1; MZD + ZD), standard diet (G2; MZD + SD), zinc supplementation (G3; MZD + ZnS), and control (G4; CON). Groups G1–G3 were obtained from mothers with zinc deficiency, while G4 was obtained from mothers fed a standard diet. The procedures lasted 45 days. GATAD1, kisspeptin, GnRH, and NPY gene expressions in hypothalamic tissues were analyzed by RT-PCR; serum kisspeptin, GnRH, FSH, LH, leptin, and NPY levels were analyzed by ELISA. The lowest GATAD1, kisspeptin, and NPY gene expressions were found in groups G1 and G2 (p < 0.05), while the lowest GnRH expression was found in group G1 (p < 0.05). Serum zinc, kisspeptin, GnRH, LH, and leptin levels were lowest in G1 (p < 0.05) and highest in G3 and G4 (p < 0.05). Similarly, FSH and NPY levels were low in G1 and G2 (p < 0.05), and high in G3 and G4 (p < 0.05). The findings suggest that maternal zinc deficiency negatively impacts puberty-related neuroendocrine markers, and that zinc supplementation may correct these markers. Full article

The ruminal epithelium plays a central role in nutrient absorption, epithelial barrier function, and mucosal immune defense. However, the molecular mechanisms by which dietary Perilla frutescens seeds (PFS) regulate ruminal epithelial immunity remain poorly understood. This study investigated the transcriptomic responses of the sheep ruminal papilla to dietary PFS supplementation. Forty-five male Tan sheep were assigned to three dietary treatments (n = 15 per group): a low-concentrate diet (LC), a high-concentrate diet (HC), and the LC diet supplemented with 3% PFS (LC + PFS). After an 84-day feeding trial, ruminal papilla tissues from six animals per group were randomly subjected to RNA sequencing and integrated bioinformatic analyses, covering all three pairwise comparisons (LC vs. HC, HC vs. LC + PFS, and LC vs. LC + PFS). The LC vs. LC + PFS comparison served as the direct assessment of PFS effects under the same basal diet, whereas HC vs. LC + PFS was treated as a cross-dietary comparison. LC vs. HC yielded 387 differentially expressed genes (DEGs), HC vs. LC + PFS yielded 104 DEGs, and LC vs. LC + PFS yielded 33 DEGs, with predominant enrichment in metabolic and stress-adaptive pathways (AMPK, MAPK, PI3K-Akt). The latter were mainly associated with metabolic and structural pathways. Propionate and valerate were negatively correlated with several interferon-signaling and antigen-presentation genes. Collectively, the direct LC vs. LC + PFS comparison demonstrates that PFS supplementation under physiological conditions is associated with targeted metabolic modulation. Meanwhile, the cross-dietary HC vs. LC + PFS comparison reveals that, relative to high-concentrate feeding, the PFS-supplemented low-concentrate feeding regimen is transcriptionally associated with enhanced immune surveillance capacity in a non-inflammatory manner. These findings provide transcriptomic evidence supporting the potential of PFS as a modulator of ruminal epithelial homeostasis and offer a foundation for further investigation into its application as a functional feed ingredient. Full article

This study focused on dietary supplementation with flaxseed in fattening pigs to observe health benefits and important biological findings, including cell membrane integrity, proliferation, and angiogenesis. Animals received flaxseed for 6 or 3 weeks prior to slaughter. Pigs were divided into a control group (standard diet) and experimental groups F6 (6 weeks) and F3 (3 weeks), which received flaxseed in the feed. Spectroscopy followed by an electrophoretic method was used to study the levels of basic biochemical parameters, including LDH. Subsequently, gas chromatography revealed fatty acid concentrations in the pigs’ livers, and finally, immunohistochemical analysis was used to detect CD31 and PCNA antigens in the liver and jejunum. The highest weight gain was measured in the F6 group. After slaughter, blood samples revealed a decreased glucose level in the F6 group, maintained levels of basic biochemical parameters, and decreased concentrations of LDH in blood, heart, liver, and skeletal muscle extracts, thus improving cell membrane integrity. A long-term supplementation period led to better utilization of essential fatty acids, an improved n-6:n-3 ratio, and other atherogenic indices related to cardiovascular health. Flaxseed also affected the expression of CD31 and PCNA proteins in the liver and jejunum, mainly in the F6 group. Full article

Atopic dermatitis (AD) and food allergy frequently coexist during early childhood and are increasingly linked through interactions within the gut–skin axis. We evaluated the clinical outcomes of an integrated nutritional and microbiome-oriented management strategy in children with food allergy-associated AD under real-world conditions. This prospective, two-center, real-world observational cohort study included 85 children (median age, 11 months) with AD diagnosed according to the Hanifin–Rajka criteria and confirmed IgE- and/or non-IgE-mediated food allergy. Participants received individualized nutritional and microbiome-oriented management comprising elimination diets, conventional topical therapy, microbiome-directed interventions, and nutritional supplementation tailored to their clinical, allergological, and microbiological profile. Disease severity was assessed using the Scoring Atopic Dermatitis (SCORAD) index at baseline and after approximately 1 and 3 months of follow-up. Cow’s milk, egg, and wheat were the predominant food allergens, and 69.4% of children were polyallergic. SCORAD decreased significantly during follow-up, with a mean relative reduction of 51.6% and 63.5% of participants achieving a SCORAD50 response. Food allergy burden independently predicted baseline disease severity, whereas documented gut dysbiosis was associated with polyallergy and greater absolute clinical improvement, although this association lost statistical significance after adjustment for baseline disease severity and should therefore not be interpreted as a favorable prognostic effect of dysbiosis. Baseline SCORAD remained the strongest independent predictor of clinical improvement. Integrated nutritional and microbiome-oriented management was associated with substantial clinical improvement and may represent a valuable adjunct to standard care in children with food allergy-associated AD. Because of the observational, uncontrolled design, these findings describe associations rather than causal treatment effects. These findings support further evaluation of personalized nutritional strategies in randomized controlled trials. Full article

Scarab beetles depend on gut microbes for digestive enzymes. Some species’ microbiomes show taxonomic conservation regardless of diet, while others have conserved functional profiles. We compared the hindgut microbiomes of two Cetoniinae beetle larvae: the obligately saproxylophagous Mecynorrhinella poggei and the omnivorous/predatory Goliathus goliatus, which requires protein supplementation when reared artificially. Two diets with and without supplementation were used. If diet drives the microbiome, then gut microbes in protein-supplemented hosts should produce fewer lignocellulolytic enzymes and more proteinases regardless of species. If microbiome composition is conserved within a species, then Mecynorrhinella is expected to have more lignocellulolytic microbes while Goliathus should have more proteinolytic microbes regardless of diet. In this study, low-protein diets reduced G. goliatus growth, but gut microbiome composition and predicted function remained largely stable, dominated by Bacteroidales including Dysgonomonas, Proteiniphilum, and Alistipes. Mecynorrhinella’s gut microbiome showed some reduced Proteiniphilum and increased Dysgonomonas relative abundance, but otherwise the microbiome composition was statistically stable with no effect of diet on growth or predicted microbiome function. These results highlight that microbiomes of closely related insects can markedly differ even if diet does not and that microbiome functional conservation tied to host physiology may occur even if greater plasticity could theoretically reduce malnutrition. Full article

This study evaluated the effects of supplementation with Toxfin™ Dry, a mineral adsorbent composed of bentonite and sepiolite, on productive performance, egg quality, intestinal morphometry, serum biochemical parameters, antioxidant status, and sphingolipid metabolism of laying hens challenged with T-2 toxin and fumonisin. A total of 480 Hy-Line W-36 laying hens at 25 weeks of age were distributed in a completely randomized design with six treatments and eight replicates of 10 birds each, over 112 days divided into four 28-day cycles. Treatments consisted of a control diet, either uncontaminated or contaminated with 2 mg/kg T-2 toxin and 60 mg/kg fumonisin B1, with or without 1 kg/ton Toxfin™ Dry. Mycotoxin challenge reduced egg production (p < 0.0001), egg weight (p < 0.0001), egg mass (p < 0.0001), feed intake (p < 0.0001), eggshell strength (p < 0.0001) and thickness (p < 0.0001), Haugh unit (p < 0.0001), and villus ratio (p < 0.0001), while increasing inflammatory and hepatic biomarkers, malondialdehyde levels, and the sphinganine ratio, with more pronounced effects under combined contamination. Supplementation with Toxfin™ Dry mitigated most adverse effects, with responses approaching those of the control group. The adsorbent reduces intestinal mycotoxin bioavailability and helps maintain performance and physiological homeostasis in laying hens. Full article

(1) Background: Acute diarrhea is a frequent clinical manifestation in dogs, often involving dysbiosis and mucosal barrier impairment. This study evaluated the efficacy of Florentero Complex^® (Candioli S.r.l.), a multi-targeted dietary supplement combining probiotics, prebiotics, and antioxidant components, in supporting the recovery of dogs with acute diarrhea. (2) Methods: In a randomized, controlled trial, 28 client-owned dogs presenting with acute diarrhea for 3–4 days were assigned to either a Treated Group (TRT: standard commercial diet plus supplement) or a Control Group (CTR: standard commercial diet alone) for 7 days. Daily defecation frequency (nDEF), fecal score (FS), and inflammatory markers (fecal cytology and C-reactive protein) were monitored throughout the study. (3) Results: Both groups showed a reduction in nDEF over time, with no significant difference observed between groups. However, a significant intergroup difference in FS was observed, with the supplemented dogs showing a faster and more pronounced improvement in stool consistency than the CTR. Fecal cytology and serum CRP levels also showed a trend toward reduced inflammation in the TRT group. (4) Conclusions: Florentero Complex^® appears to provide nutritional support that improves clinical signs and stool quality beyond standard dietary management alone. Full article

Depression is defined by clinical symptoms, but its biology varies considerably among patients. In this review, dietary tryptophan allocation describes the routes taken by tryptophan after intestinal absorption. Some is incorporated into proteins. Some enters serotonin and melatonin synthesis or the kynurenine pathway, while gut bacteria convert another fraction into indole compounds. Brain availability also depends on the circulating free pool and competition with other large neutral amino acids. This term does not imply a new biochemical pathway. It allows these known processes to be considered in relation to inflammation, metabolism, the gut microbiota, medication use, and current disease state. Recent meta-analyses indicate that peripheral tryptophan is lower in depression. They do not show a consistent increase in the kynurenine-to-tryptophan ratio, and findings from cerebrospinal fluid vary between studies. Human multiomics studies have associated microbial and metabolite profiles with cognition and response to treatment, although the evidence remains largely correlational. Changes in kynurenine, 3-hydroxykynurenine, and quinolinic acid are more apparent in inflammatory subgroups than in unselected samples. Modern evidence for L-tryptophan monotherapy is sparse. Trials of 5-hydroxytryptophan and interventions directed at the gut microbiota have also produced mixed results. Studies should characterize participants and sampling conditions more carefully. Diet and competition among amino acids need to be recorded. Albumin concentration, medication exposure, and disease state also affect interpretation. Considering these variables together may improve biomarker analyses and support trials in more biologically homogeneous groups. Dietary tryptophan allocation is proposed for these research purposes, not for clinical diagnosis or routine supplementation. Full article

This study investigates the neuroprotective effects of zinc sulfate (ZnSO₄) against diabetic encephalopathy in an aged female rat model of Type 2 diabetes mellitus (T2DM). T2DM was induced using a 4-week high-fat diet followed by a single 25 mg/kg STZ injection. Diabetic rats were treated with 10 mg/kg/day ZnSO₄ for 4 weeks. We evaluated serum lipids, hippocampal oxidative stress (MDA, GSH), gene expressions (SIRT-1, GLUT3, BDNF, Bax, Bcl-2), and structural injuries (Nissl, PAS, GAP43, NGF) in the hippocampus and cerebral cortex. Results demonstrated that ZnSO₄ significantly ameliorated systemic dyslipidemia. In the diabetic hippocampus, ZnSO₄ mitigated oxidative stress by decreasing MDA and elevating depleted GSH levels. Molecularly, ZnSO₄ upregulated the suppressed expressions of SIRT-1, GLUT3, BDNF, and Bcl-2, while downregulating pro-apoptotic Bax. Histopathological and immunohistochemical findings confirmed that ZnSO₄ reduced neuronal degeneration and vascular pathologies (PAS positivity), preserving neuroplasticity (elevated GAP43 and NGF) in both brain regions. In conclusion, ZnSO₄ supplementation provides potent, multifaceted neuroprotection against T2DM-associated neurodegeneration by regulating systemic dyslipidemia, restoring redox homeostasis, activating the SIRT-1/BDNF anti-apoptotic pathway, and preserving structural integrity. Full article

This study aimed to investigate the regulatory effects of dietary dandelion supplementation on the ruminal physiological status of lambs fed a high-concentrate diet. Twenty-two 6-month-old female crossbred lambs with an initial body weight of 32.05 ± 0.43 kg were randomly assigned to two groups (n = 11 per group): the HC group (fed a high-concentrate basal diet) and the DD group (basal diet supplemented with 2 g/kg dandelion powder), with a 14-day adaptation and 60-day experimental period. The results showed that compared with the HC group, dandelion supplementation significantly improved lamb growth performance and modulated ruminal fermentation parameters and tissue morphology. For inflammatory indices, the concentration of interleukin-10 (IL-10) was significantly increased, while the concentrations of interleukin-1β (IL-1β), lipopolysaccharide (LPS) and histamine (HIS) were significantly decreased (p < 0.05). Meanwhile, dandelion supplementation upregulated the mRNA expression of ruminal epithelial tight junction proteins and hexokinase II (HK-II), while downregulating the mRNA expression of myeloid differentiation factor 88 (MyD88), voltage-dependent anion channel 1 (VDAC1), inositol 1,4,5-trisphosphate receptor (IP3R), NLR family pyrin domain containing 3 (NLRP3), and caspase-1. Metagenomic analysis revealed that dandelion supplementation did not alter ruminal microbial α-diversity, but slightly modulated community composition and functional profiles. The abundances of dominant phyla Bacteroidota and Bacillota showed only slight fluctuations, while fiber-degrading genera (Xylanibacter, Quinella, Selenomonas) showed a trend toward enrichment, and proteolytic taxa were decreased. CAZyme analysis revealed an upward trend in families CE4, CE8, GH32, and GH13_46 (pectin/starch degradation) and a downward trend in GH73, GH27, and GT14 (oligosaccharide/peptidoglycan/polysaccharide metabolism) in the DD group. KEGG orthology annotation suggested that nominal KO differences were mainly associated with carbohydrate metabolism pathways, including starch and sucrose metabolism and peptidoglycan biosynthesis. None of these features, however, remained significant after FDR correction (raw p < 0.05; all q > 0.05). Collectively, dietary dandelion supplementation was associated with alterations in ruminal physiological status and microbial community in lambs fed a high-concentrate diet, providing foundational data for dandelion application in lamb diets under short-term feeding conditions. Full article

Background/Objective: Maternal diet is an important determinant of gut microbiota composition in dams and offspring. This study investigated whether HDCA supplementation during maternal high-fat diet (HFD) exposure was associated with gut microbiota composition in dams and offspring and with selected obesity-related phenotypes. Methods: Nineteen C57BL/6J female mice were assigned to a control diet group (CON), a high-fat diet group (HFD), and a high-fat diet supplemented with 0.5% hyodeoxycholic acid group (HFD+HDCA). Fecal samples were collected from the dams before mating, following 8 weeks of dietary intervention, and from the offspring at weaning. All samples were analyzed using 5R 16S rRNA gene sequencing. Body weight was monitored in both dams and offspring, and liver histology was assessed by hematoxylin and eosin staining. Results: HFD exposure was associated with obesity-related phenotypes in dams and offspring, including increased maternal body weight and greater hepatic lipid accumulation and visceral adiposity in offspring. LEfSe and ANCOM-BC2 analyses identified concordant microbial changes between dams and offspring under corresponding dietary conditions. Lachnospiraceae_Unknown_genus3261 and Coprococcus increased with HFD exposure in both dams and offspring, whereas Bifidobacterium, Coprococcus, and Allobaculum decreased following HDCA supplementation. These findings indicate maternal–offspring concordance in microbiota responses to HFD and HDCA, without establishing direct vertical transmission. PICRUSt2 analysis suggested group association differences in predicted functional potential for pathways annotated to propionate, pyruvate, and β-alanine metabolism. Conclusions: HDCA supplementation during maternal HFD exposure was associated with differences in offspring gut microbiota at weaning and with attenuation of selected obesity-related phenotypes. These findings suggest a potential role of the gut microbiota–bile acid axis in mediating intergenerational dietary effects. However, the study does not establish direct microbial transmission, altered metabolic activity, or causality; these findings require confirmation in litter-aware and mechanistic studies. Full article

The ban on antibiotic growth promoters has created an urgent need for effective alternatives to maintain intestinal health and production performance. This exploratory study evaluated the effects of a novel antibiotic alternative additive at graded inclusion levels (control, 1%, 3%, 5%) on growth performance, intestinal histomorphology, gut microbiome ecology, and host metabolome in Tibetan pigs (n = 40). Forty Tibetan pigs were randomly assigned to four dietary treatment groups for a 21-day feeding trial. Growth performance, intestinal histopathology, metatranscriptomic sequencing (bacteria, viruses, fungi), and untargeted metabolomics were analyzed. Tibetan pigs fed the 3% additive diet exhibited the highest numerical average daily gain (0.197 vs. 0.148 kg/d, +33.1%) and lowest feed conversion ratio (2.61 vs. 3.59, −27.3%), with overall treatment effects reaching statistical significance (ADG: p = 0.027; FCR: p = 0.023). Metatranscriptomic profiling revealed fundamentally distinct microbial communities between the duodenum and colon. Multi-omics integration identified 79 significant microbiome-pathology associations in the duodenum and 38 in the colon, with SCFA-producing bacteria positively correlated with mucosal architectural parameters. The multi-omics network revealed a core-periphery architecture with Eubacterium, Lactobacillus, and Escherichia as keystone hubs. Dietary supplementation at 3% showed the most favorable effects on growth performance and metabolic modulation without compromising intestinal structural integrity, supporting its potential as a viable antibiotic alternative. Full article