ArticleAnimals : an open access journal from MDPI2026
Effects of Dietary Sterol-Enriched Yeast Hydrolysate on Ovarian Development, Reproductive Endocrine Status, Immune-Inflammatory Responses, Antioxidant Indices, and Egg Quality in Late-Laying Yellow-Feathered Broiler Breeder Hens.
Article in Animals : an open access journal from MDPI, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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10 authors.
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Abstract
This study evaluated graded dietary supplementation with sterol-enriched yeast hydrolysate (SYH) in late-laying yellow-feathered broiler breeder hens. A total of 720 55-week-old hens received 0, 0.2, 0.5, or 0.8 g/kg of SYH for six weeks after a one-week adaptation period. SYH is a composite product containing sterols, mannan, nucleotides, and amino nitrogen; therefore, the observed effects cannot be attributed to sterols alone. Eggshell strength increased at 0.5 and 0.8 g/kg, whereas fertility and hatchability were unaffected. The 0.5 g/kg group showed the highest ovarian index values and the greatest quantities of 5-12 mm yellow follicles. The 0.8 g/kg group showed the highest serum reproductive hormone and immunoglobulin concentrations, together with the highest reactive oxygen species and cytokine concentrations. Hepatic and ovarian superoxide dismutase activity increased selectively, whereas most other antioxidant indices were unchanged. Ovarian
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