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The induction of ovulation and oestrus in ewes during anoestrus



The induction of ovulation and oestrus in ewes during anoestrus



Proc. N. Z. Soc. Anim. Prod, 18: 97



Several different treatments by injections of progesterone followed by pregnant mare serum (P.M.S.) have been tested for inducing ovulation and oestrus in anoestrous Romney ewes. The simplest and most effective treatment was three injections of 30 mg. progesterone followed by one of 1, 000 i.u., P.M.S., all at two-day intervals. Of 25 anoestrous ewes, 17 were marked by a teaser ram, and 11 lambed to artificial insemination.

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