ArticlePoultry science2020
Effect of age at photostimulation on sexual maturation and egg-laying performance of layer breeders.
Article in Poultry science, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.
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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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Who cites it
14 citing papers in PubMed, 1 synthesis or guideline pooled it, 36 citations in OpenAlex.
- Physiological role of light modulation on poultry production, reproductions and welfare: a-systematic review.Veterinary research communications · 2026Pooled it
- Age, strain, and gut section shape the microbiome of commercial laying hens.Poultry science · 2026Article
- Photoperiod as a neuroendocrine regulator: A review on pineal-melatonin signaling and physiological plasticity in poultry.Poultry science · 2026Review
- Dietary Effects of Moringa oleifera on Table Egg Parameters of Hybrid Layers.Veterinary medicine and science · 2026Article
- Role of nutritional and metabolic status on the pullet to hen transition and lifetime productivity.Frontiers in physiology · 2025Review
- N-carbamylglutamate supplementation improves laying performance of layers by regulating hypothalamic-pituitary-ovarian axis.Frontiers in veterinary science · 2025Article
- Comparative analysis of intestinal and reproductive function in older laying hens with three egg laying levels.Frontiers in microbiology · 2025Article
- Physiological changes in the regulation of calcium and phosphorus utilization that occur after the onset of egg production in commercial laying hens.Frontiers in physiology · 2024Article
- A Study on Egg Production and Quality According to the Age of Four Italian Chicken Dual-Purpose Purebred Hens Reared Outdoors.Animals : an open access journal from MDPI · 2023Article
- Exploring the effects of lysozyme dietary supplementation on laying hens: performance, egg quality, and immune response.Frontiers in veterinary science · 2023Article
- Effects of a Rearing Dietary Protein Regimen on Productive Performance, Egg Quality, and Bone Quality of Laying Hens.The journal of poultry science · 2022Article
- Plasma metabolomic profiling reveals potential onset of lay biomarkers in broiler breeders.Poultry science · 2022Article
- Dietary apple pectic oligosaccharide improves reproductive performance, antioxidant capacity, and ovary function of broiler breeders.Poultry science · 2021Article
- The effect of dietary pectic oligosaccharide supplementation on intestinal health of broiler breeders with different egg-laying rates.Poultry science · 2021Article
Corrections and comments
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Authors and funding
13 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The objective of this study was to determine the effect of age at photostimulation on sexual maturity and performance of layer breeders. A total of 192 fourteen-wk-old White Leghorn (WL) breeder hens were randomly allocated to 4 treatments of 48 birds each, with 2 replicates per treatment. The birds were photostimulated at 16 (PS16), 18 (PS18), 20 (PS20), and 22 (PS22) wk of age. Four birds per treatment were randomly selected to evaluate sexual organ development at 1 D before photostimulation and 2, 4, and 6 wk after photostimulation. The ovary weight, large yellow follicles number (LYF), oviduct weight, and oviduct length of PS18 increased sharply after photostimulation. Conversely, the increase in PS16 was not observed until 2 wk after photostimulation. There was no difference in age at sexual maturity between treatments (P > 0.05). The PS16 had the longest interval (28 D) from photostimulation to 5% egg production, while PS22 reached 5% egg production 7 D before photostimulation. The PS22 had lower peak production (P = 0.02) and less egg production (P = 0.02) than other treatments. The PS16 had more broken and abnormal eggs (P = 0.01) and lower hatchability (P = 0.04) than other treatments. In conclusion, photostimulation at 16 and 22 wk of age decreases hatchability and egg production, respectively, and photostimulation at 18 wk is appreciated for the WL breeder hens.
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