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KMID : 0900919940180020127
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Korean journal of Animal Reproduction
1994 Volume.18 No. 2 p.127 ~ p.131
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Effect of PGF_2alpha on the Serum Progesterone Level and Interval from Weaning to Estrus in Primiparous Sow
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Abstract
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In order to examine the effects of PGF2alpha on intervals from weaning to estrus and serum progesterone levels seventeen crossbred primiparious sows were randomly alloted to two groups. One group was injected intramuscularly on the day of weaning with 10 mg PGF2alpha (10mg/2ml, Lutylase). The other group was treated with saline as a control. Serum progesterone concentrations were determined at 24 hour intervals for 12 days after weaning. A serum progesterone level in PGF2alpha-treated group was reached to the lowest level(1.19pm0.38 ng/ml) on day 3 after weaning and remained low(1.26~1.43ng/ml) thereafter. Whereas, the control group showed the lowest level of progesterone on day 4 after wearing, then showed a rapid increase up to 5.02pm0.38ng/ml on day 8 and a rapid decrease was followed. The PGF2alpha treated group showed an interval from weaning to estrus(5.2pm0.8 days) approximately 2 days shorter than the control(7.4pm3.0 days)(p<0.05).
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KEYWORD
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PGF_2alpha, interval from weaning to estrus, progesterone level, primiparous sow
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