Journal of Veterinary Medical Science
Online ISSN : 1347-7439
Print ISSN : 0916-7250
ISSN-L : 0916-7250
Postpartum Plasma PGF Metabolite Profile in Cows with Dystocia and/or Retained Placenta, and Effect of Fenprostalene on Uterine Involution and Reproductive Performance
Toshihiko NAKAOAbsy GAMALTakeshi OSAWAKen NAKADAMasaharu MORIYOSHIKeiichiro KAWATA
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1997 Volume 59 Issue 9 Pages 791-794

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Abstract

Objectives of this study were to show postpartum plasma PGF metabolite (PGFM) profile, to clarify whether endogenous PGF plays a certain role in the uterine involution in cows with dystocia and/or retained placenta, and to examine the effects of fenprostalene, a long-acting PGF analog, on the uterine involution and reproductive performance of the cows with abnormal puerperium. A group of 27 cows with dystocia and/or retained placenta showed a massive release of PGF after parturition as indicated by a rise of plasma concentrations of PGFM, significantly higher than 33 cows with normal puerperium. The duration of the elevated plasma PGFM concentrations in the cows with abnormal puerperium was shorter than that of the normal cows. In cows with normal puerperium, those showing relatively longer duration of elevated plasma PGFM levels needed a shorter period for postpartum uterine involution than the cows showing a shorter duration of the PGFM elevation (P<0.01), while no such relationship was observed in cows with abnormal puerperium. In field trials, an administration of an exogenous PGF, fenprostalene, at 7 to 10 days (78 cows) or 14 to 28 days postpartum (74 cows) was found to be effective in facilitating uterine involution and resumption of ovarian cyclicity, and improved reproductive performance. It may be concluded that a large amount of PGF is released for a relatively shorter period in cows after dystocia and/or retained placenta and the elevation of PGFM is not responsible for the uterine involution. The administration of the exogenous PGF was shown to be effective at improving the postpartum reproductive performance of cows with abnormal puerperium.

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この記事はクリエイティブ・コモンズ [表示 - 非営利 - 改変禁止 4.0 国際]ライセンスの下に提供されています。
https://creativecommons.org/licenses/by-nc-nd/4.0/deed.ja
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