SynthesisOpen veterinary journal2025
Effects of vitamin E supplementation on sow gestation: a meta-analysis.
Synthesis in Open veterinary journal, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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.
The trial behind it
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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
1 citing paper in PubMed.
- Effects ofAnimals : an open access journal from MDPI · 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
14 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: Vitamin E is an antioxidant that plays a crucial function in the reproductive processes of pigs. Aim: This study evaluated the reproductive efficacy of ɑ-tocopherol or vitamin E supplementation in pregnant sows. Methods: Twenty-one articles from 1977 to 2021 were included in the database. There were eight parameters observed, such as concentration in the serum during gestation, colostrum concentration, number of piglets per litter at birth, number of stillborn piglets, number of piglets born alive, litter weight at birth, weight of each piglet at birth, and piglet serum concentration on day 1. The data were analyzed using the PROC MIXED procedure in SAS version 9.1. Results: Vitamin E administration in sows led to a statistically significant rise in the level of α-tocopherol in the serum of both sows during gestation and the serum of piglets on the first day after birth. The injection of vitamin E did not yield a statistically significant effect on the observed variables, including an increase in the number of pigs per litter at birth, stillborn piglets, pigs born alive, litter weight at birth, vitamin E levels in colostrum, dan the weight of piglets at delivery. Conclusions: Vitamin E supplements are advisable for female pigs to increase the concentration of α-tocopherol in serum throughout pregnancy and enhance α-tocopherol levels in the serum of piglets on the first day after birth.
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Registered trials
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