Evidence map›Paper›PMID 26632778›Full record

ArticleJournal of the American Association for Laboratory Animal Science : JAALAS2015

Maternal Weight Gain as a Predictor of Litter Size in Swiss Webster, C57BL/6J, and BALB/cJ mice.

James B Finlay, Xueli Liu, Richard W Ermel, Trinka W Adamson

Abstract read
In one paragraph

Article in Journal of the American Association for Laboratory Animal Science : JAALAS, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing 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

17 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Article
  5. A Prospective Assessment of the Etiology of Murine Dystocia.Journal of the American Association for Laboratory Animal Science : JAALAS · 2025
    Article
  6. Cardiac lymphatics undergo distinct remodeling during hypertrophic and nonhypertrophic pregnancy.American journal of physiology. Heart and circulatory physiology · 2024
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Experimental infection withParasitology · 2022
    Article
  13. Article
  14. Article
  15. Effects of Maternal Fenbendazole on Litter Size, Survival Rate, and Weaning Weight in C57BL/6J Mice.Journal of the American Association for Laboratory Animal Science : JAALAS · 2021
    Article
  16. Article
  17. 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

4 authors.

James B FinlayDivision of Comparative Medicine, Beckman Research Institute, City of Hope, Duarte, California, USA. jbfinlay@med.usc.edu.
Xueli LiuDepartment of Information Sciences, Beckman Research Institute, City of Hope, Duarte, California, USA.
Richard W ErmelDivision of Comparative Medicine, Beckman Research Institute, City of Hope, Duarte, California, USA.
Trinka W AdamsonDivision of Comparative Medicine, Beckman Research Institute, City of Hope, Duarte, California, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

An important task facing both researchers and animal core facilities is producing sufficient mice for a given project. The inherent biologic variability of mouse reproduction and litter size further challenges effective research planning. A lack of precision in project planning contributes to the high cost of animal research, overproduction (thus waste) of animals, and inappropriate allocation of facility resources. To examine the extent daily prepartum maternal weight gain predicts litter size in 2 commonly used mouse strains (BALB/cJ and C57BL/6J) and one mouse stock (Swiss Webster), we weighed ≥ 25 pregnant dams of each strain or stock daily from the morning on which a vaginal plug (day 0) was present. On the morning when dams delivered their pups, we recorded the weight of the dam, the weight of the litter itself, and the number of pups. Litter sizes ranged from 1 to 7 pups for BALB/cJ, 2 to 13 for Swiss Webster, and 5 to 11 for C57BL/6J mice. Linear regression models (based on weight change from day 0) demonstrated that maternal weight gain at day 9 (BALB/cJ), day 11 (Swiss Webster), or day 14 (C57BL/6J) was a significant predictor of litter size. When tested prospectively, the linear regression model for each strain or stock was found to be accurate. These data indicate that the number of pups that will be born can be estimated accurately by using maternal weight gain at specific or stock-specific time points.

Indexed as

Body WeightLitter SizeAnimalsFemaleLinear ModelsMiceMice, Inbred BALB CMice, Inbred C57BLPregnancyPregnancy, AnimalReproductionWeight Gain

Identifiers

PMID26632778
PMCPMC4671784

What OpenQuestion holds

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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.