Ovsynch Plus CIDR Protocol for Timed Embryo Transfer in Suckled Postpartum Japanese Black Beef Cows
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- KAWATE Noritoshi
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University
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- SAKASE Mitsuhiro
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University Northern Center of Agricultural Technology, General Technological Center of Hyogo Prefecture for Agriculture, Forest and Fishery
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- WATANABE Kensuke
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University
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- FUKUSHIMA Moriyuki
- Northern Center of Agricultural Technology, General Technological Center of Hyogo Prefecture for Agriculture, Forest and Fishery
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- NODA Masanobu
- Northern Center of Agricultural Technology, General Technological Center of Hyogo Prefecture for Agriculture, Forest and Fishery
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- TAKEDA Kazushi
- Northern Center of Agricultural Technology, General Technological Center of Hyogo Prefecture for Agriculture, Forest and Fishery
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- UENO Satoru
- Northern Center of Agricultural Technology, General Technological Center of Hyogo Prefecture for Agriculture, Forest and Fishery
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- INABA Toshio
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University
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- KIDA Kayoko
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University
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- TAMADA Hiromichi
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University
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- SAWADA Tsutomu
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University
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We compared synchronization and pregnancy rates, and the increase in blood progesterone concentrations during luteal development, between (1) Ovsynch plus an intravaginal controlled internal drug release (CIDR) device protocol followed by timed embryo transfer (timed ET), and (2) a conventional estrus synchronization method using PGF2α and ET in suckled postpartum Japanese Black beef cows. Cows in the PGF group (n=18) received a PGF2α analogue when a CL was first palpated per rectum at 10-d intervals after 1 to 2 month postpartum. Cows (n=11), which showed estrus (Day 0) within 5 d of the PGF2α, and had a CL on Day 7, received ET. Cows in the Ovsynch+CIDR group (n=19) underwent the Ovsynch protocol plus a CIDR for 7 d (GnRH analogue and CIDR on Day-9, PGF2α analogue with CIDR removal on Day-2, and GnRH analogue on Day 0), with ET on Day 7. The ovulation synchronization (100%) and embryo transfer (100%) rates in the Ovsynch+CIDR group were greater (P<0.01) than the estrus synchronization (66.7%) and the embryo transfer (61.1%) rates in the PGF group. The postpartum interval at ET in the Ovsynch+CIDR group (62.5 ± 2.5 d) was shorter (P<0.01) than in the PGF group (74.9 ± 3.9 d). The pregnancy rate in the Ovsynch+CIDR group (57.9%) did not differ significantly from that in the PGF group (50.0%). Plasma progesterone concentrations were not significantly different in the two groups on Days 0, 1, 2, 5, 7, 14 and 21. In summary, higher synchronization and transfer rates, and shorter postpartum interval to ET, can be achieved with timed ET following the Ovsynch plus CIDR protocol than after estrus with the single PGF2α treatment followed by ET in suckled postpartum recipient beef cows. Pregnancy rates were similar. Also, the increase in blood progesterone concentrations during luteal development following ovulation synchronized by the Ovsynch plus CIDR protocol was similar to that after estrus induced by the PGF2α treatment.<br>
収録刊行物
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- Journal of Reproduction and Development
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Journal of Reproduction and Development 53 (4), 811-817, 2007
公益社団法人 日本繁殖生物学会
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詳細情報 詳細情報について
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- CRID
- 1390001206337460864
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- NII論文ID
- 10020003881
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- NII書誌ID
- AA10936678
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- ISSN
- 13484400
- 09168818
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- NDL書誌ID
- 8882849
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
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