ArticleVeterinary world2022
Effect of vitamin E supplementation on chicken sperm quality: A meta-analysis.
Article in Veterinary world, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 2 of them syntheses that pooled it.
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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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
6 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Effects of vitamin E supplementation on sow gestation: a meta-analysis.Open veterinary journal · 2025Pooled it
- A meta-analysis of the effects of clay mineral supplementation on alkaline phosphatase, broiler health, and performance.Poultry science · 2023Pooled it
- Timing of an antioxidant-acidifier feed additive modulates growth performance and cecal microbiota in broiler chickens during enrofloxacin exposure.Poultry science · 2026Article
- Effects of dietary supplementation with polyphenolic extracts from Lasia spinosa Thw. roots on reproductive performance in Guangxi Ma Roosters.Poultry science · 2026Article
- Quercetin upregulates steroid hormone biosynthesis to enhance reproductive performance in roosters.Poultry science · 2026Article
- Gamma-aminobutyric acid modulates buck semen quality and sperm preservation duration in vivo and in vitro.Journal of animal science · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
10 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background and Aim: Among several factors, the sperm quality of poultry is affected by the rooster's body size and the availability of antioxidants like vitamin E. This study aimed to determine the effect of dietary vitamin E supplementation on rooster sperm quality through a meta-analysis. Materials and Methods: After verification and evaluation, a total of 19 articles were included in this study. Data, including dietary vitamin E, semen volume, concentration, total sperm cells, pH, motility, viability, percentage of dead and abnormal sperm, vitamin E sperm content, malondialdehyde (MDA) content, and testosterone levels, were tabulated in a database; these were subsequently analyzed using mixed modeling with vitamin E dose as a fixed effect and study identity as a random effect. Results: Dietary supplementation level of vitamin E significantly (p<0.001) affected sperm concentration, significantly affected motility (p<0.001), significantly affected sperm vitamin E (p<0.001), significantly affected viability (p<0.001), and significantly affected chicken sperm fertility (p=0.001). Vitamin E administration also significantly reduced the number of sperm cell deaths (p<0.001); however, increased dietary levels of vitamin E did not affect semen volume (p=0.853), pH (p=0.951), MDA (p=0.542), the percentage of abnormal sperm cells (p=0.343), nor testosterone levels (p=0.063). Conclusion: Dietary vitamin E supplementation is recommended for male chickens since it generally enhances the quality of their sperm.
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Registered trials
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