ArticleFood science of animal resources2023
Performance, Egg Quality, and Immunity of Laying Hens due to Natural Carotenoid Supplementation: A Meta-Analysis.
Article in Food science of animal resources, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
What it found
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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
18 citing papers in PubMed.
- Dietary marigold-derived lutein produces dose- and time-dependent egg yolk enrichment and coordinated hepatic-ovarian responses in laying hens.Poultry science · 2026Article
- Effects of heat stress on laying performance, blood hormones and biochemical indices, egg quality, and intestinal digestive enzymes in laying ducks.Poultry science · 2026Article
- Transformation of Agro-Industrial By-Products into High-Value Animal-Derived Foods: Bioactive Compounds, Microbiome-Mediated Biotransformation, Metabolomic Traceability and Circular Valorization.Molecules (Basel, Switzerland) · 2026Review
- Nutritional and bioactive properties of native chicken eggs: Global perspectives on human health implications.Poultry science · 2026Review
- Transforming duck egg liquid albumen by-products into sustainable technology for artificially cured salted egg production.NPJ science of food · 2026Article
- Oxidative homeostasis and survival instincts of chicken egg, embryo and adult.Poultry science · 2026Review
- Yeast polysaccharides modulate lipid metabolism and restore oviduct inflammatory and microbial homeostasis to support egg quality in Salmonella Pullorum-challenged hens.Journal of animal science and biotechnology · 2026Article
- Evaluating phenotypic correlations between internal and external egg quality indicators of Hy-Line Brown laying hens at 35 weeks of age.Journal of animal science and technology · 2026Article
- Effects of Different Levels of Carrot Juice Supplementation in Drinking Water on Performance, Egg Quality, Blood Parameters, and Gut Health of Babcock White Laying Hens.Life (Basel, Switzerland) · 2026Article
- Microbial conversion of biodiesel waste for carotenoid production.Frontiers in bioengineering and biotechnology · 2026Article
- Utilization of Wheat with Enhanced Carotenoid Levels and Various Fat Sources in Hen Diets.Animals : an open access journal from MDPI · 2025Article
- Dietary canthaxanthin improves egg production rate through regulating hepatic lipid metabolism and redox status in indigenous chickens.Frontiers in veterinary science · 2025Article
- Blood carotenoids as a biomarker of intestinal functionality and performance in broiler chickens.Frontiers in physiology · 2025Article
- Understanding the Causes of Keel Bone Damage and Its Effects on the Welfare of Laying Hens.Animals : an open access journal from MDPI · 2024Review
- The Impact of Biotechnologically Produced Lactobionic Acid on Laying Hens' Productivity and Egg Quality during Early Laying Period.Animals : an open access journal from MDPI · 2024Article
- Plasma Biochemistry, Intestinal Health, and Transcriptome Analysis Reveal Why Laying Hens Produce Translucent Eggs.Animals : an open access journal from MDPI · 2024Article
- Study on the current research trends and future agenda in animal products: an Asian perspective.Journal of animal science and technology · 2023Review
- The use of purple carrot powder in the diet of laying quails improved some egg quality characteristics, including antioxidant capacity.Tropical animal health and production · 2023Article
Corrections and comments
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
This study aimed to investigate the effectiveness of carotenoid supplementation on the performance, egg quality, and immunity of laying hens using a meta-analysis approach. The database was searched using Google Scholar and Scopus, from 2012 to 2022. The literature was published in English. 47 Articles were selected for meta-analysis. Analyses were performed using the Open Meta-analyst for Ecology and Evolution (OpenMEE) software. The heterogeneity and data validation against publication bias were analyzed using JASP 0.16.2 software. Overall, the results showed that carotenoid supplementation improved feed intake by 0.32 g/day/hen [95% confidence interval (CI)=0.02 to 0.61], final body weight by 0.33 g/hen (95% CI=0.05 to 0.60), egg production by 0.38% (95% CI=0.14 to 0.63), egg weight by 0.29 g (95% CI=0.09 to 0.5), yolk colour by 2.11 (95% CI=1.71 to 2.51), Haugh unit (HU) by 0.26 (95% CI=0.11 to 0.42), yolk carotenoids by 1.17 μg/kg (95% CI=0.59 to 1.75), immunoglobulin A (IgA) by 0.74 mg/L (95% CI=0.18 to 1.29), and lower yolk cholesterol by -0.38 mg/g (95% CI=-0.59 to -0.16). Feed conversion ratio (FCR), eggshell thickness, and white blood cells were unaffected by the application of carotenoids. The heterogeneity analysis showed variability in all studies (<0.05). In conclusion, carotenoid supplementation can elevate productivity, enhance egg quality, and improve immunity. However, based on Kendall's test, there was a publication bias in several parameters, namely FCR, egg weight, HU, yolk carotenoids, and IgA.
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