Ovsynch Plus CIDR Protocol for Timed Embryo Transfer in Suckled Postpartum Japanese Black Beef Cows
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概要
- 論文の詳細を見る
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.
- 2007-08-01
著者
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KAWATE Noritoshi
Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefe
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KIDA Kayoko
Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefe
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INABA Toshio
Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefe
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TAMADA Hiromichi
Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefe
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SAWADA Tsutomu
Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefe
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Imai Taku
東京女子医科大学 循環器内科
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WATANABE Kensuke
Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefe
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Ueno Satoru
Northern Center Of Agricultural Technology General Technological Center Of Hyogo Prefecture For Agri
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Inaba Toshio
Department Of Advanced Pathobiology Graduate School Of Life And Environmental Sciences Osaka Prefect
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Inaba Toshio
Department Of Animal Reproduction College Of Agriculture Osaka Prefecture University
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Tanaka Kakeru
Department Of Advanced Pathobiology Graduate School Of Life And Environmental Sciences Osaka Prefect
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Watanabe Kensuke
Department Of Advanced Pathobiology Graduate School Of Life And Environmental Sciences Osaka Prefect
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Kida Kayoko
Department Of Advanced Pathobiology Graduate School Of Life And Environmental Sciences Osaka Prefect
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Noda Masanobu
Northern Center Of Agricultural Technology General Technological Center Of Hyogo Prefecture For Agri
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Sawada T
Department Of Advanced Pathobiology Graduate School Of Life And Environmental Sciences Osaka Prefect
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SAKASE Mitsuhiro
Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefe
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FUKUSHIMA Moriyuki
Northern Center of Agricultural Technology, General Technological Center of Hyogo Prefecture for Agr
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TAKEDA Kazushi
Northern Center of Agricultural Technology, General Technological Center of Hyogo Prefecture for Agr
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Takeda Kazushi
Northern Center Of Agricultural Technology General Technological Center Of Hyogo Prefecture For Agri
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Sakase Mitsuhiro
Department Of Advanced Pathobiology Graduate School Of Life And Environmental Sciences Osaka Prefect
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Tamada H
Department Of Advanced Pathobiology Graduate School Of Life And Environmental Sciences Osaka Prefect
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Fukushima Moriyuki
Northern Center Of Agricultural Technology General Technological Center Of Hyogo Prefecture For Agri
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Fukushima Moriyuki
Northern Center Of Agricultural Technology General Technological Center Of Hyogo Prefecture For Agri
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Kawate N
Department Of Advanced Pathobiology Graduate School Of Life And Environmental Sciences Osaka Prefect
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Sawada Tsutomu
Department Of Advanced Pathobiology Graduate School Of Life And Environmental Sciences Osaka Prefect
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Tamada Hiromichi
Department Of Advanced Pathobiology Graduate School Of Life And Environmental Sciences Osaka Prefecture University
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KAWATE Noritoshi
Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1–58 Rinku-oraikita, Izumisano, Osaka 598–8531, Japan
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