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- IWAZUMI Yasuaki
- Hokkaido Livestock Improvement Association
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- FUKUI Yutaka
- Laboratory of Animal Genetics and Reproduction, Obihiro University of Agriculture and Veterinary Medicine
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- VARGAS Rodolfo Bitarra
- Laboratory of Animal Genetics and Reproduction, Obihiro University of Agriculture and Veterinary Medicine
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- NAKANO Chiyo
- Hokkaido Livestock Improvement Association
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- SATO Noriyuki
- Hokuren Livestock Experiment and Training Farm
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- FURUDATE Makoto
- Hokuren Livestock Experiment and Training Farm
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- OHSAKI Kazue
- Laboratory of Theriogenology, Obihiro University of Agriculture and Veterinary Medicine
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- MATSUZAKI Shigenori
- Hokkaido Livestock Improvement Association
書誌事項
- タイトル別名
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- Superovulation Using CIDR in Holstein C
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抄録
Three trials were conducted to investigate the superovulatory response of Control Inter-nal Drug Releasing device (CIDRR). Forty-six Holstein cows were divided into three treatment groups per trial; CIDRR without progesterone (P4) (Control), CIDRR containing 1.9 g P4 for 12 days (CIDRR-1) and the two CIDRR with P4 replacing with a new CIDRR on day 9 of the 12 day insertion period (CIDRR-2). Follicle stimulating hormone (FSH) were administered on day 9 up to the time of CIDRR removal and additional prostaglandin F2α injections were done on day 11 of the 12 day insertion period. Ovulation rate, recovered and transferable embryos, and P4 and estradiol-17β (E2) levels in blood plasma were evaluated and compared among the treatment groups.<BR>There were no statistical differences on the mean (± SEM) ovulation rate, recovered and transfer-able embryos. An encouraging results of transferable embryos were obtained in the 3 treatment groups (80.7%, 69.8%, and 61.4% for Control, CIDRR-1 and CIDRR-2 respectively). No existing evidence of correlation between plasma P4 and ovulation rate at the time of AI (day 13) was observed. Plasma P4 and E2 concentrations were characterized by the physiological variability of individual cow and heterogeneous follicular development following superovulatory treatments. The results suggest that the use of CIDRR presents a satisfactory superovulatory regimen which could prove applicable for embryo production under field conditions. However, further research is necessary to elucidate factors involved in the improvements of the regimen.
収録刊行物
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- Journal of Reproduction and Development
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Journal of Reproduction and Development 40 (3), 259-266, 1994
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
- 1390282681311463040
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- NII論文ID
- 130000846175
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- NII書誌ID
- AA10936678
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- COI
- 1:CAS:528:DyaK2MXltFChtLc%3D
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- ISSN
- 13484400
- 09168818
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- NDL書誌ID
- 3603857
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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
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可