The effect of treatment with a slow-releasing oxytocin preparation at the onset of oestrus on the ovulation rate of Merino ewes : research note
Journal of the South African Veterinary Association
Field | Value | |
Title | The effect of treatment with a slow-releasing oxytocin preparation at the onset of oestrus on the ovulation rate of Merino ewes : research note | |
Creator | King, P.R. Coetzer, W.A. | |
Description | The 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-re-leasing preparation containing 10 IU oxytocin, 48 hours after sponge withdrawal. Laparo-scopic 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. | |
Publisher | AOSIS | |
Date | 1997-07-13 | |
Identifier | 10.4102/jsava.v68i1.859 | |
Source | Journal of the South African Veterinary Association; Vol 68, No 1 (1997); 16-17 2224-9435 1019-9128 | |
Language | eng | |
Relation |
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https://jsava.co.za/index.php/jsava/article/view/859/833
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