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The effect of shearing pregnant ewes on lamb birth weights
  1. AR Austin and
  2. NE Young


Shearing housed pregnant ewes at about the 11th week of pregnancy resulted in increased ewe liveweight gain (P greater than 0-01) and heavier twin litter weights (P greater than 0-01). The lambs from the shorn ewes also grew faster when put out to pasture. Unshorn pregnant ewes had a faster and more variable respiration rate, probably due to their being too hot in the prevailing conditions. The effect of this apparent heat stress on fetal nutrition is discussed.

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