難産、胎盤停滞、およびボディコンディションが周産期乳牛の血漿中ベータエンドルフィン動態に及ぼす影響
スポンサーリンク
概要
- 論文の詳細を見る
The aims of this study were to determine profiles of plasma immunoreactive β-endorphin (ir-β-EP) during peripartum period in dairy cows, and to examine whether dystocia, retained placenta or body condition affects the plasma ir-β-EP level. Blood samples were collected from 21 Holstein-Friesian cows from day 180 of pregnancy until first ovulation. The cows were classified into two groups based on calving conditions and ir-β-EP patterns at parturition. Seven out of the 21 cows had normal parturition and 14 cows had abnormal parturition (dystocia and/or retained placenta). The proportion of cows which had ir-β-EP elevation at parturition tended to be higher in cows with abnormal parturition (11/14; 79%) than in those with normal parturition (3/7; 42%). Plasma cortisol level increased at parturition both in cows with ir-β-EP elevation and in cows without ir-β-EP elevation at parturition. Postpartum ir-β-EP concentrations in plasma were similar between cows with normal parturition and those with abnormal parturition, and between cows which had lost their body condition score (BCS) after calving and those which had maintained their BCS. In conclusion, abnormal parturition may affect plasma ir-β-EP level at parturition but not postpartum period.
- 日本繁殖生物学会の論文
著者
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中尾 敏彦
Department of Animal Science, Graduate School for International Development and Cooperation, Hiroshi
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中尾 敏彦
山口大学農学部
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Nakada Ken
Department Of Large Animal Clinical Sciences School Of Veterinary Medicine Rakuno Gakuen University
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森好 政晴
酪農学園大学 獣医
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大澤 健司
Laboratory of Theriogenology, Faculty of Agriculture, Iwate University, Morioka, Iwate 020-8550, Jap
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森好 政晴
Department of Veterinary Obstetrics and Gynecology, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8
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Nakada Ken
Department Of Large Animal Clinical Sciences Graduate School Of Veterinary Medicine Rakuno Gakuen Un
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中尾 敏彦
山口大学 農学部獣医学科
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MORIYOSHI Masaharu
Department of Veterinary Obstetrics and Gynecology, School of Veterinary Medicine, Rakuno Gakuen Uni
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NAKAO Toshihiko
Department of Veterinary Obstetrics & Gynecology, Rakuno Gakuen University
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OSAWA Takeshi
Laboratory of Theriogenology, Faculty of Agriculture, Iwate University
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Osawa Takeshi
Laboratory Of Theriogenology Department Of Veterinary Medicine Faculty Of Agriculture Iwate Universi
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Moriyoshi Masaharu
Department Of Veterinary Obstetrics And Gynecology Faculty Of Veterinary Medicine Rakuno Gakuen Univ
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Nakao Toshihiko
Department Of Veterinary Medicine Faculty Of Agriculture Yamaguchi University
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Nakada Ken
Department of Veterinary Obstetrics and Gynecology, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8501, Japan
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Nakao Toshihiko
Department of Veterinary Obstetrics and Gynecology, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8501, Japan
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