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Rumination in pregnant ewes.

K J Stafford1, B F Leek

  • 1Department of Physiology and Biochemistry, Veterinary College, U.C.D., Dublin, Ireland.

Zentralblatt Fur Veterinarmedizin. Reihe A
|March 1, 1990
PubMed
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Pregnancy significantly reduces daily rumination time in ewes. Daily rumination time decreased from 435 min/day before mating to 329 min/day during late pregnancy, while patterns remained consistent.

Area of Science:

  • Animal Science
  • Reproductive Biology
  • Ruminant Physiology

Background:

  • Rumination is a crucial digestive process in ruminants.
  • Understanding physiological changes during pregnancy is vital for animal husbandry.

Purpose of the Study:

  • To investigate the impact of pregnancy on the daily rumination time (DRT) and rumination patterns in ewes.
  • To compare DRT in pregnant ewes versus non-pregnant ewes.

Main Methods:

  • Recorded daily rumination time and nycterohemeral patterns in six ewes.
  • Measurements were taken before mating and during late pregnancy.
  • One unmated ewe served as a control.

Main Results:

  • Mean DRT was significantly shorter during late pregnancy (329 min/day) compared to before mating (435 min/day).

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  • The DRT of the unmated control ewe showed no significant change.
  • The nycterohemeral pattern of rumination exhibited minimal alterations throughout the study.

    • Conclusions:

    • Late pregnancy is associated with a notable reduction in daily rumination time in ewes.
    • Pregnancy-induced physiological changes appear to influence rumination duration more than its temporal pattern.