Sexual responses of rams to ovariectomized and intact estrous ewes

Edward O. Price, Judith K. Blackshaw, Alan Blackshaw, Reid Borgwardt, Martin R. Dally, Robert Bondurant

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

This investigation compares the sexual performance of rams when exposed to ovariectomized and intact estrous ewes. In Experiment 1, 22 sexually experienced rams were sequentially exposed to hormone-induced ovariectomized estrous ewes or intact estrous ewes that were cycling naturally or induced to exhibit estrus using progestin sponges. The sexual performance of the rams was not affected by ewe treatment. In Experiment 2, 95 rams were simultaneously exposed to ovariectomized and intact ewes induced to exhibit estrus via hormone treatment. Rams mounted ovariectomized ewes more frequently than intact females, but ejaculation rates were similar for the two treatments. It was concluded that the ejaculation frequency of rams in sexual performance tests (i.e. serving capacity) is not biased by the mode of estrus induction of the stimulus females.

Original languageEnglish (US)
Pages (from-to)67-71
Number of pages5
JournalApplied Animal Behaviour Science
Volume42
Issue number1
DOIs
StatePublished - Jan 1 1994

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Keywords

  • Estrus
  • Sexual behavior
  • Sheep

ASJC Scopus subject areas

  • Food Animals
  • Animal Science and Zoology

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