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Related Experiment Videos

Ovulatory activity in native Thai goats.

P Suttiyotin1, B J Restall, J T Milton

  • 1Thai-Australian Prince of Songkla University Project, Faculty of Natural Resources, Prince of Songkla University, Hatyai 90110, Thailand.

Theriogenology
|September 1, 1991
PubMed
Summary

Male goats significantly boost ovulation rates in native Thai does. Continuous or intermittent male presence increased ovulation incidence year-round, with peak activity in October and December.

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Area of Science:

  • Reproductive biology
  • Animal science
  • Veterinary medicine

Background:

  • Understanding seasonal variations in goat reproductive cycles is crucial for efficient breeding programs.
  • Native Thai goats present unique reproductive characteristics influenced by environmental and social factors.
  • The role of male presence in stimulating female reproductive activity requires further investigation in diverse goat breeds.

Purpose of the Study:

  • To investigate the ovarian activity of native Thai goats under different male exposure scenarios.
  • To determine the seasonal patterns of ovulation incidence and ovulation rate in this breed.
  • To assess the impact of continuous versus intermittent male presence on reproductive cyclicity.

Main Methods:

  • Ovarian activity was monitored in native Thai goats from June 1985 to July 1986.

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  • Goats were grouped into three conditions: alone, continuously with males, or intermittently with males at 56-day intervals.
  • Ovulation incidence and ovulation rate were recorded and analyzed across different months and male exposure conditions.

    • Main Results:

    • Overall ovulation incidence was highest in October (78.8%) and December (78.8%), and lowest in June (54.3%).
    • The presence of males, whether continuous or intermittent, significantly enhanced the proportion of does ovulating throughout the year.
    • Ovulation rate varied seasonally, peaking at 1.9 in October 1985 and reaching a low of 1.3 in May and July 1986.

    Conclusions:

    • Male presence is a significant factor in stimulating year-round ovulation in native Thai goats.
    • Seasonal variations in ovulation incidence and rate are evident, with peaks in autumn/winter months.
    • These findings have implications for optimizing breeding strategies and improving reproductive efficiency in native Thai goat populations.