Evidence map›Paper›PMID 36766235›Full record

ArticleAnimals : an open access journal from MDPI2023

Impact of Dystocia on Milk Production, Somatic Cell Count, Reproduction and Culling in Holstein Dairy Cows.

Steven M Roche, Joseph A Ross, Crystal Schatz, Kendall Beaugrand, Sjoert Zuidhof, Brenda Ralston, Nick Allan, Merle Olson

Abstract read
In one paragraph

Article in Animals : an open access journal from MDPI, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing 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

7 citing papers in PubMed.

  1. The Maternal Blood Transcriptome Reflects Molecular Signatures Associated With Large Offspring Syndrome and Other Adverse Pregnancy Outcomes in Cattle.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026
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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

8 authors.

Steven M RocheACER Consulting, Guelph, ON N1G 2W1, Canada.ORCID 0000-0001-6934-6497
Joseph A RossChinook Contract Research Inc., Airdrie, AB T4A 0C3, Canada.ORCID 0000-0002-0432-8383
Crystal SchatzChinook Contract Research Inc., Airdrie, AB T4A 0C3, Canada.
Kendall BeaugrandChinook Contract Research Inc., Airdrie, AB T4A 0C3, Canada.ORCID 0000-0002-8182-5623
Sjoert ZuidhofSjoert Zuidhof Consulting, Calgary, AB T1S 0M3, Canada.
Brenda RalstonLakeland College, 282075 TWP RD 262, Rocky View County, AB T4A 2L6, Canada.
Nick AllanChinook Contract Research Inc., Airdrie, AB T4A 0C3, Canada.ORCID 0000-0003-1993-5554
Merle OlsonAlberta Veterinary Laboratories Ltd., Calgary, AB T2C 5N6, Canada.ORCID 0000-0003-3654-7692

Funding

Canadian Agricultural Partnership Grant under Adapting Innovative Solutions in Agriculture Program Grant #: 2019N008X
6 · The paper itself

Abstract

This study investigated the effects of dystocia on milk production, somatic cell count, reproductivity, disease, and milk production. A total of 2159 cows across 21 dairy farms in Alberta, Canada were enrolled in this study. Multivariable models were created to explore associations between outcome variables and calving ease score. In total, 89.5% of calvings were unassisted, 6.1% were an easy pull, and 4.3% were a moderate-hard pull. Cows that had a moderate-hard pull produced 4.01 kg less milk, 0.12 kg less volume of milk fat, and 0.12 kg less milk protein per day than those that had an unassisted calving. No difference was found between calving ease groups with respect to SCC. Cows with a moderate or hard pull produced 510 kg less milk per lactation than unassisted cows. Cows with a moderate to high level of assistance at birth had a higher hazard of being culled over the duration of their lactation. Cows with an easy pull had increased odds of developing a retained placenta. It is evident that assistance at calving, particularly a moderate-hard pull, is associated with significant impacts on future milk production and risk of being culled; therefore, efforts should be made to minimize dystocia and prevent these impacts.

Indexed as

assisted calvingdystociamilk qualityobservational cohort studyproductivity

Identifiers

PMID36766235
PMCPMC9913294

What OpenQuestion holds

Textmetadata
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.