Effects of induced molting on lipid accumulation in liver of aged laying hens

Poultry Science, Journal Year: 2025, Volume and Issue: 104(4), P. 104941 - 104941

Published: Feb. 22, 2025

Language: Английский

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Regulation of intestinal health by Lactobacillus rhamnosus GG during fasting-induced molting in laying hens

Poultry Science, Journal Year: 2025, Volume and Issue: unknown, P. 105057 - 105057

Published: March 1, 2025

Language: Английский

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Regulatory Effects of the Bidirectional Crosstalk between Hepatic Gene Expressions and Gut Microbiota on the Productive Performances and Egg Quality of Induced Molting Treated Layer Hens

Poultry Science, Journal Year: 2025, Volume and Issue: 104(6), P. 105135 - 105135

Published: April 6, 2025

The objective of this study was to determine the bidirectional effects between hepatic gene expression and gut microbial communities on regulating productive performances egg quality layer hens in late-laying period after receiving fasting-induced molting treatment. A total three hundred sixty 380-day-old Jingfen No. 6 from same batch were randomly divided into control group (CON) (FM), each contained 9 replicates, with 20 chickens replicate. Productive meticulously recorded for replicate, followed by sampling one bird replicate intestinal morphological analysis. The16S rRNA transcriptomic sequencing methods conducted expressions investigation CON FM treatments investigate potential regulatory quality. Results showed that production rate no significant difference groups before treatment, while effectively increased Egg measurement results indicated treatment significantly albumen height Haugh unit (P < 0.05), which discrepancies pre-FM stage. Intestinal differences villus Height, crypt depth, V/C ratio jejunum ileum stage, depth decreased 0.05) Bacterial community indexes Shannon sobs treatment(P 0.05). Relative abundances Alistipes.spp, Faecalicoccus.spp, Peptococcus.spp, Alloprevotella.spp, Sellimonas.spp, Lactobacillus.spp Bifidobacterium.spp Hepatic differential expressed genes are mainly enriched Biosynthesis unsaturated fatty acids, acid elongation, steroid biosynthesis, PPAR signaling pathways. Bidirectional cecal bacterial synergistically interacted modulating weight, height, unit. Conclusion: bacteria bilaterally cooperated promoted laying rate, FM-treated through nutrient absorption physiological lipid metabolism. Our findings may provide a theoretical basis process further extend cycles production.

Language: Английский

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Evaluation of the incremental effect of fasting length on pH, select cecal microbial groups, cecal volatile fatty acid concentrations, and secretory IgA excretion in roosters

Poultry Science, Journal Year: 2025, Volume and Issue: unknown, P. 105161 - 105161

Published: April 1, 2025

Two experiments were conducted to evaluate the effect of incremental fasting time on gastrointestinal tract in chickens. Adult White Leghorn roosters with intact ceca provided a nutrient-adequate corn-soybean meal diet ad libitum for 3 weeks. Prior initiation experimental phase, feed intake was recorded 8 h and immediately after period commenced. In Experiment 1, fasted either 0, 3, 6, 9, 12, 16, or 24 h. At each point birds euthanized pH crop, gizzard, cecal contents collected measure volatile fatty acids (VFA) select microbial groups. 2, excreta determine secretory IgA (sIgA) excretion. contrast 2 not thus sIgA excretion measured within individual across point. Experiments 1 contained 5 replicates per treatment, respectively. there linear increase (P < 0.05) as length increased. Cecal VFA content reduced by 9 12 branch-chain FA ratio increased 6 fasting. There few effects > groups mucosa; however, Escherichia coli greater at compared other points. total excreted fasting, being 1106 µg/h mean 419 all conclusion, concentrations pH, coli, branched-chain ratio, excretion, suggesting that elicited negative tract.

Language: Английский

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Exploring the metabolic patterns and response mechanisms of bile acids during fasting: a study with poultry as an example

Poultry Science, Journal Year: 2024, Volume and Issue: 104(2), P. 104746 - 104746

Published: Dec. 31, 2024

Fasting is beneficial to alleviate fatty liver, lose weight and improve reproductive function. However, previous studies have shown that, during fasting, disorders of bile acid metabolism were strongly associated with intestinal inflammation. The physiological biochemical parameters gene expression multiple tissues chickens at every critical time node measured by ELISA qPCR. In addition, association analysis was performed based on liver transcriptome sequencing cecum metabolome data. At the cellular level, regulatory effects cecal metabolites host verified. During hepatic FXR-SHP-CYP7A1 ileum-hepatic FXR-SHP-FGF15/19-FGFR4-CYP7A1 negative feedback pathways activated inhibit synthesis. ileum FXR-SHP-ASBT are activated, hindered ileal reflux. same time, it promotes secretion acids cholesterol in accelerates utilization H

Language: Английский

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