PEDEvidence@pedevidence

SOURCE-LINKED STUDY SUMMARY

Repeated systemic β-NGF administration improves ejaculate characteristics in rams.

Theriogenology ·

Human

Abstract summarizedQuality not appraised
What was studied
An experiment tested whether repeated beta-nerve growth factor administration changed semen characteristics in rams.
Who / model studied
Adult Corriedale rams received four administrations five days apart or remained untreated, with nine animals per group. Semen was collected before treatment through day 58.
Studied dose & schedule
Dose and schedule have not yet been extracted for this summary.
What the study found
Total sperm per ejaculate increased at selected time points, and volume increased on day 37. Sperm motility, shape, membrane function, testosterone and scrotal circumference showed no detectable treatment changes.
Limitations & context
The response was temporary. Effects on fertility and semen preservation, and the underlying mechanism, remain uncertain.

Read summary source ↗ · Prepared 9/15/2026 · AI-assisted, source-based summary

Review record & corrections

Summary prepared: . Source scope: abstract. This is an AI-assisted source summary, not an independent clinician sign-off.

No public field-by-field revision history is available for this card yet. The date above is the summary date, not proof that every field was updated then.

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Research findings apply to the population and conditions studied. This educational summary is not a treatment recommendation or a formal assessment of study quality.

Original publication ↗ · DOI: 10.1016/j.theriogenology.2026.118174

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