Relationship between Peripartal Plasma Oxytocin and Prostaglandin F_<2α> Metabolite and Placental Expulsion Time in Heavy Draft Mares
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概要
- 論文の詳細を見る
The aim of this study was to clarify the relationship between circulating oxytocin (OT) and PGF2α metabolite (PGFM) in mares at the third stage of labor and placental expulsion time in order to investigate a cause of retained placenta of which the incidence increase in a heavy draft mare. Blood was sampled every 5 min from foaling to expulsion of the placenta in 18 heavy draft mares to evaluate circulating OT and PGFM. The relationships between OT and PGFM concentration and recorded placental expulsion times were investigated. The results were as follows (1) The highest level of OT concentration was observed close to foaling in 15 mares. (2) The OT concentrations close to foaling were variable with a large difference from the lowest concentration, 22.1 pg/ml, to the highest concentration, 209.3 pg/ml. (3) The highest level of PGFM was observed close to foaling in 17 mares. (4) During the 60 min following foaling, the OT concentrations of the mares (n=11) that had a shorter placental expulsion time (i.e., <1 h), were significantly higher than those of the mares (n=7) that had a longer placental expulsion time (i.e., >1 h; P<0.05). Collectively, the OT concentration immediately after foaling is negatively related to the placental expulsion time. Deficiency of OT secretion at foaling have should be considered as one of the causes of retained placenta in heavy draft mares.
- 日本繁殖生物学会の論文
- 2008-08-01
著者
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Yamanoi Takahiro
Hokkai-Gakuen University
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宮本 明夫
帯広畜産大学畜産学部
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Acosta Tomas
Lab. Of Reproductive Endocrinology Graduate School Of Natural Sci. And Technol. Okayama Univ.
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アコスタ トマスj
帯広畜産大学・畜産管理学科
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小林 修一
帯広畜産大学・畜産科学科・生殖科学研究室
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Miyamoto Akio
Graduate School Of Animal And Food Hygiene Obihiro University Of Agriculture And Veterinary Medicine
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宮本 明夫
帯広畜産大
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MIYAKE Yoh-Ichi
Department of Veterinary Medicine, Obihiro University
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Acosta Tomas
Obihiro University Of Agriculture And Veterinary Medicine
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Acosta Tomas
Graduate School Of Natural Science And Technology Okayama University
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Miyamoto Akio
Obihiro University Of Agriculture And Veterinary Medicine
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Ishii Mitsuo
Obihiro University Of Agriculture And Veterinary Medicine
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Ishii Mitsuo
Department Of Applied Veterinary Medicine Obihiro University Of Agriculture And Veterinary Medicine
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Matsui Motozumi
Lab. Of Theriogenology Dep. Of Applied Veterinary Medicine Obihiro Univ. Of Agriculture And Veterina
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KOBAYASHI Syuichi
Obihiro University of Agriculture and Veterinary Medicine
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MIKI Wataru
Hokkaido NOSAI
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MATSUI Motozumi
Obihiro University of Agriculture and Veterinary Medicine
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MIYAKE Yoh-Ichi
Obihiro University of Agriculture and Veterinary Medicine
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三宅 陽一
岩手大学 農学部家畜繁殖学研究室
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Miyake Yoh‐ichi
Obihiro Univ. Agriculture And Veterinary Medicine Hokkaido
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Miyake Y
Laboratory Of Theriogenology Faculty Of Agriculture Iwate University
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Amaya Montoya
帯広畜産大学 畜産学研究科畜産衛生学
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Yamanoi Takahiro
Hokkai Gakuen University Faculty Of Engineering
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Yamanoi Takahiro
Hokkai Gakuen University Division Of Electronics And Information Engineering Faculty Of Engineering
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Miyake Y
Iwate Univ. Morioka Jpn
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松井 基純
The United Graduate School Of Veterinary Sciences Gifu University
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Miyake Yoh-ichi
Obihiro Univ. Agriculture And Veterinary Medicine Hokkaido
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宮本 明夫
Graduate School Of Animal And Food Hygiene Obihiro University Of Agriculture And Veterinary Medicine
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宮本 明夫
帯広畜産大学・畜産科学科
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Acosta T
Department Of Theriogenology Obihiro University Of Agriculture And Veterinary Medicine
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Miyamoto Akio
Graduate School Of Animal And Food Hygiene Obihiro Univ. Of Agriculture And Veterinary Medicine
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Kobayashi S
Obihiro University Of Agriculture And Veterinary Medicine
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