ReviewFrontiers in veterinary science2022
Risk Factors for Chronic Stress in Sows Housed in Groups, and Associated Risks of Prenatal Stress in Their Offspring.
Review in Frontiers in veterinary science, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 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.
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.
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Who cites it
13 citing papers in PubMed, 23 citations in OpenAlex.
- Computer vision system for assessing pig welfare indicators on carcasses.Veterinary and animal science · 2026Article
- Reproductive efficiency and longevity of gilts and sows in group housing and free-farrowing systems versus traditional crate systems in tropical environments.BMC veterinary research · 2026Article
- Effect of Dietary Neutral Detergent Fiber Intake on Improving Fecal Consistency in Gestating Gilts.Animals : an open access journal from MDPI · 2025Article
- Severe claw lesions in pregnant sows reduce prolificacy and increase litter heterogeneity.Porcine health management · 2025Article
- Genetic correlations of environmental sensitivity based on daily feed intake perturbations with economically important traits in a male pig line.Genetics, selection, evolution : GSE · 2025Article
- Multi-Omics Analysis of Chronic Heat Stress-Induced Biological Effects, Liver Injury, and Heat Tolerance Mechanisms via Oxidative and Anti-Inflammatory Pathways in Early-Pregnancy Sows.Antioxidants (Basel, Switzerland) · 2025Article
- Hydroxy-Selenomethionine Supplementation During Gestation and Lactation Improve Reproduction of Sows by Enhancing the Antioxidant Capacity and Immunity Under Heat Stress Conditions.Antioxidants (Basel, Switzerland) · 2025Article
- Welfare implications of poor gilt selection standards in commercial pig production systems.Animal frontiers : the review magazine of animal agriculture · 2025Article
- A comparison of two systems for group housing of gestating sows - effects on productivity, removal, and treatments.Porcine health management · 2025Article
- RGB-based machine vision for enhanced pig disease symptoms monitoring and health management: a review.Journal of animal science and technology · 2025Review
- The Role of Vitamins in Mitigating the Effects of Various Stress Factors in Pigs Breeding.Animals : an open access journal from MDPI · 2024Review
- Indicators of improved gestation housing of sows. Part I: Effects on behaviour, skin lesions, locomotion, and tear staining.Animal welfare (South Mimms, England) · 2023Article
- Indicators of improved gestation housing of sows. Part II: Effects on physiological measures, reproductive performance and health of the offspring.Animal welfare (South Mimms, England) · 2023Article
Corrections and comments
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Authors and funding
4 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Chronic stress has a detrimental effect on sow welfare and productivity, as well as on the welfare and resilience of their piglets, mediated prenatally. Despite this, the specific risk factors for chronic stress in pregnant sows are understudied. Group-housed pregnant sows continuously face numerous challenges associated with aspects of the physical (group type and size, flooring, feeding system) and social (stocking density, mixing strategy) environment. There are many well-known potent stressors for pigs that likely contribute to chronic, physiological stress, including overcrowding, hot temperatures, feed restriction, inability to forage, uncomfortable floors, and poor handling. Some of these stressors also contribute to the development of production diseases such as lameness, which in turn are also likely causes of chronic stress because of the associated pain and difficulty accessing resources. The aim of this review is to discuss potential risk factors for chronic stress in pregnant sows such as space allowance, group size and type (stable/dynamic), feeding level, lameness, pen design, feed system, enrichment and rooting material, floor type, the quality of stockmanship, environmental conditions, and individual sow factors. The mechanisms of action of both chronic and prenatal stress, as well as the effects of the latter on offspring are also discussed. Gaps in existing research and recommendations for future work are outlined.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.