未経産牛における黄体初期からのプロジェステロン腟内徐放剤(PRID)処置による発情同期化と受胎成績
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概要
- 論文の詳細を見る
The objective of the present study was to evaluate estrus synchronization and conception rate after progesterone releasing intravaginal device (PRID) treatment from the early luteal phase in the presence or absence of estradiol benzoate (EB) in heifers. Heifers (n=11) were assigned randomly to two treatments; insertion of a PRID containing 1.55 g progesterone with a capsule attached including 10 mg EB (P+EB; n=6) and the PRID withdrawn the EB capsule (P-EB; n=5). The PRID was inserted into the vagina on Day 2 of the estrous cycle (Day 0 was the day of ovulation) and was left for 12 days. The proportion of heifers exhibiting standing estrus within 3 days after PRID removal was 83.3% (5/6) for the P+EB group, and 80.0% (4/5) for the P-EB group, respectively. Conception rate by artificial insemination on synchronized estrus was 80.0% (4/5) in the P+EB group, and 100% (4/4) in the P-EB treatment group, respectively. These results suggest that a PRID treatment from 2 days after ovulation for 12 days in the presence or absence of EB has an effect on the synchronization of estrus and produces a beneficial conception rate in heifers.
- 日本繁殖生物学会の論文
著者
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KAMOMAE Hideo
Laboratory of Veterinary Reproduction, Tokyo University of Agriculture and Technology
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Tanaka Tomomi
Laboratory Of Veterinary Reproduction Tokyo University Of Agriculture And Technology
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Kamomae Hideo
Laboratory Of Veterinary Reproduction Tokyo University Of Agriculture And Technology
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KUROIWA Takenobu
Laboratory of Veterinary Reproduction, Tokyo University of Agriculture and Technology
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Kuroiwa Takenobu
Laboratory Of Veterinary Reproduction Tokyo University Of Agriculture And Technology
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ISHIBASHI Ai
Laboratory of Veterinary Reproduction, Tokyo University of Agriculture and Technology
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FUKUDA Masaharu
Saitama Prefectual Chichibu Highland Farm
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KIM Seungjoon
Laboratory of Veterinary Reproduction, Tokyo University of Agriculture and Technology
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Kim Seungjoon
Laboratory Of Veterinary Reproduction Tokyo University Of Agriculture And Technology
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Ishibashi Ai
Laboratory Of Veterinary Reproduction Tokyo University Of Agriculture And Technology
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黒岩 武信
Laboratory of Veterinary Reproduction, Tokyo University of Agriculture and Technology
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石橋 愛
Laboratory of Veterinary Reproduction, Tokyo University of Agriculture and Technology
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福田 昌治
Saitama Prefectual Chichibu Highland Farm
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