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Effects of prenatal auditory stimulation on physiological stress and neurotransmitter levels in developing embryos

Yashini Subramaniam1, Suriya Kumari Ramiah2, Intan Shameha Abdul Razak3

  • 1Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, Serdang, Malaysia.

Animal Bioscience
|October 2, 2025
PubMed

Insights

Prenatal auditory stimulation with music or noise affects duck embryo stress markers, with music and noise exposure reducing stress and enhancing resilience in hatchlings. This indicates a physiological stress response without impacting hatchability or weight.

Area of Science:

  • Animal Physiology
  • Developmental Biology
  • Stress Physiology

Background:

  • Prenatal auditory stimulation (PAS) is explored for its impact on physiological development.
  • Understanding stress responses in avian embryos is crucial for welfare and productivity.

Purpose of the Study:

  • To investigate the effects of prenatal auditory stimulation (PAS) on serum biochemical markers in duck embryos and hatchlings.
  • To assess the influence of different sound environments (noise and music) on stress indicators.

Main Methods:

  • Khaki Campbell duck eggs were exposed to control, traffic noise (90 dB), or Mozart music (90 dB) from embryonic day 13 to hatching.
  • Serum levels of heat shock protein 70 (HSP70), ceruloplasmin (CPN), alpha-1-acid-glycoprotein (AGP), corticosterone (CORT), ovotransferrin (OVT), and dopamine (DA) were measured at embryonic day 21 and post-hatch day 1.

Main Results:

  • PAS did not affect hatchability or body weights.
  • Both noise and music treatments increased HSP70 at ED21 but decreased it at PH1 compared to controls.
  • Dopamine activity was attenuated by noise and music treatments at ED21 and PH1, respectively.
  • Control ducklings showed higher OVT and AGP levels at PH1.

Conclusions:

  • Prenatal auditory stimulation induces a physiological stress response in duck embryos.
  • Exposure to music and noise during incubation can attenuate stress and enhance stress resilience in ducklings.
  • PAS does not negatively impact hatchability or growth, suggesting potential for auditory enrichment.
Abstract

Keywords:
DucksEmbryosPrenatal Auditory StimulationStress

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