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Related Experiment Videos

Delayed puberty in gilts in total confinement.

G B Rampacek1, R R Kraeling, T E Kiser

  • 1Department of Animal and Dairy Science, University of Georgia, Athens, GA 30602, USA.

Theriogenology
|May 1, 1981
PubMed
Summary
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Total confinement housing significantly reduces puberty attainment in gilts by up to 50%. Environmental factors, like housing, impact gilt reproductive development and puberty timing.

Area of Science:

  • Animal Science
  • Reproductive Biology
  • Swine Production

Background:

  • Swine production relies on efficient gilt development for herd replacement.
  • Understanding factors influencing gilt puberty is crucial for optimizing reproductive performance.

Purpose of the Study:

  • To investigate the impact of total confinement versus non-confinement housing on gilt puberty attainment and reproductive timing.
  • To assess the influence of birth season on the effects of housing on gilt reproductive development.

Main Methods:

  • Two hundred fourteen crossbred gilts were housed in confinement or an outdoor lot post-weaning.
  • Estrus was monitored daily, and progesterone levels were analyzed weekly to determine puberty and ovulation.
  • Data were collected on puberty attainment, age at first estrus, and age at first ovulation.

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Main Results:

  • Confinement housing reduced gilt puberty attainment by up to 50% in gilts born in January-March.
  • While not statistically significant, non-confined gilts generally showed higher puberty rates across seasons.
  • Age at first estrus and ovulation, and adrenal gland weights were similar between housing groups.

Conclusions:

  • Total confinement housing can significantly delay or inhibit puberty attainment in gilts.
  • The season of birth may modulate the negative impact of confinement on gilt reproductive development.
  • Management strategies should consider environmental housing conditions to optimize gilt reproductive potential.