Efficacy of Intravaginal Progesterone Administration Combined with Prostaglandin F2α for Cystic Ovarian Disease in Japanese Black Cows

Journal of Veterinary Medical Science

Yoshihito SUZUKI¹  Takashi HANEISHI¹  Makoto KAJISA¹  Akihiro IWAKUMA²  Shunichi KAMIMURA¹ 

[1] Laboratory of Theriogenology, University of Miyazaki;Department of Clinical Veterinary Science, United Graduate School of Veterinary Science, Yamaguchi University

关键词: CIDR;    cystic ovarian disease;    Japanese Black cattle;   

DOI  :  10.1292/jvms.70.1077

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

References(33)The objective of this study was to investigate cystic ovarian disease (COD) in commercial Japanese Black cows and to evaluate the efficacy of 7-day insertion of an intravaginal progesterone insert (CIDR) combined with prostaglandin F2α (PGF2α) at CIDR removal. Experiment 1 was conducted to group cysts into 4 patterns based on alteration of plasma progesterone (P4) concentrations on d -7 and d 0 (=CIDR insertion) with 1.0 ng/ml as the cut-off level by ultrasonographic examination of 28 cows with COD that were ≥40 days postpartum and anoestrous after calving. In Experiment 2, a total of 55 cows under the same conditions as in Experiment 1 were utilized, and the same regimen as in Experiment 1 was performed without 7 days of pre-observation before treatment. As a result, 92.9% of CLs on d 21 were highly formed in Experiment 1 and 83.6% were highly formed in Experiment 2. The conception rates within 60 days after CIDR removal were also satisfactory high and were 71.4% and 54.5%, respectively. There were no differences in any overall reproductive parameters between Experiments 1 and 2 (P>0.05). The average days between CIDR removal and conception were 24.4 ± 5.3 and 24.0 ± 6.5 days, respectively (P>0.05); therefore, the conception dates of the cows in Experiment 2 were at least 7 days earlier compared with Experiment 1. In conclusion, treatment with a CIDR and PGF2α against COD could minimize the risk of incorrect treatment and provide sufficient reproductive performance in Japanese Black cows.

【 授权许可】

Unknown