The effect of treatment with a slow-releasing oxytocin preparation at the onset of oestrus on the ovulation rate of Merino ewes

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dc.contributor.authorKing P.R.
dc.contributor.authorCoetzer W.A.
dc.date.accessioned2011-05-15T15:57:01Z
dc.date.available2011-05-15T15:57:01Z
dc.date.issued1997
dc.description.abstractThe effect of a slow-releasing oxytocin preparation on the ovulation rate of Merino ewes was investigated. Synchronised Merino ewes were subcutaneously injected with a slow-releasing preparation containing 10 IU oxytocin, 48 hours after sponge withdrawal. Laparoscopic examination of the ovaries of all ewes was performed 10 d after the oxytocin treatment in order to determine the number of corpora lutea per ewe. The ovulation rate of the adult ewes of the treated and control groups was 179.1% and 159.1% respectively (p < 0.05) while that of the 2-tooth ewes was 108.3% and 112.8% respectively (p > 0.05). It would appear that a higher ovulation rate can be obtained by a single injection of a slow-releasing oxytocin preparation at the onset of oestrus. The lack of response in the 2-tooth ewes was probably due to their relatively low body weight.
dc.description.versionArticle
dc.identifier.citationJournal of the South African Veterinary Association
dc.identifier.citation68
dc.identifier.citation1
dc.identifier.issn382809
dc.identifier.urihttp://hdl.handle.net/10019.1/10168
dc.subjectoxytocin
dc.subjectanimal experiment
dc.subjectarticle
dc.subjectbody weight
dc.subjectcontrolled study
dc.subjectdrug effect
dc.subjectestrus
dc.subjectfemale
dc.subjectnonhuman
dc.subjectovulation
dc.subjectsheep
dc.subjectsubcutaneous drug administration
dc.subjectsustained release preparation
dc.subjectAnimals
dc.subjectDelayed-Action Preparations
dc.subjectEstrus
dc.subjectFemale
dc.subjectOvulation
dc.subjectOvulation Induction
dc.subjectOxytocin
dc.subjectSheep
dc.titleThe effect of treatment with a slow-releasing oxytocin preparation at the onset of oestrus on the ovulation rate of Merino ewes
dc.typeArticle
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