Evidence map›Paper›PMID 40852429›Full record

SynthesisFrontiers in veterinary science2025

Effects of microclimate during transport on physiological indicators of market pig welfare: a systematic review with meta-analysis.

Rick O Hernandez, Artur O Rocha, Chao Cai, Marisa Erasmus, Jay S Johnson, Luiz F Brito

Abstract readSystematic Review
In one paragraph

Synthesis in Frontiers in veterinary science, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Rick O HernandezDepartment of Animal Sciences, Purdue University, West Lafayette, IN, United States.
Artur O RochaDepartment of Animal Sciences, Purdue University, West Lafayette, IN, United States.
Chao CaiPurdue University Libraries and School of Information Studies, Purdue University, West Lafayette, IN, United States.
Marisa ErasmusDepartment of Animal Sciences, Purdue University, West Lafayette, IN, United States.
Jay S JohnsonDivision of Animal Sciences, College of Agriculture, Food and Natural Resources, University of Missouri, Columbia, MO, United States.
Luiz F BritoDepartment of Animal Sciences, Purdue University, West Lafayette, IN, United States.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

During transportation, microclimatic conditions can fluctuate significantly, affecting pigs' thermal comfort and leading to compromised welfare and production losses. Although numerous studies have examined the effects of heat stress during transport on pig welfare and meat quality, it remains unclear whether these effects persist across varying transport scenarios and environmental conditions. Therefore, this systematic review and meta-analysis evaluated the effects of microclimate during transport on physiological welfare indicators in market pigs and summarized methodologies for assessing microclimate in commercial settings. Following PRISMA guidelines, 21 studies from three databases were used. Meta-regression analyses assessed microclimatic effects and trip duration on physiological indicators, including ultimate pH (pHu), creatine kinase (U/L), lactate (mmol/L), skin lesion score (0-5), skin temperature (°C), and blood cortisol (ng/mL). The studies retrieved used different equations to determine temperature-humidity index and enthalpy to describe microclimate dynamics. Ambient temperature was significantly associated with trailer temperature (

Indexed as

heat stressmicroclimate stresspig transportpig welfaretransport microclimate

Identifiers

PMID40852429
PMCPMC12367518

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.