Effects of human chorionic gonadotropin and intravaginal progesterone device treatment after artificial inseminations on the reproductive performance of normal and repeat breeder lactating dairy cows

• Main Authors: Taiki IZUMI (Author), Ryotaro MIURA (Author), Natsumi SOBU (Author), Akiya HIRASE (Author), Osamu YONEYAMA (Author), Yoh-ichi MIYAKE (Author), Shingo HANEDA (Author), Motozumi MATSUI (Author)
• Format: Book
• Published: The Society for Reproduction and Development, 2020-08-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

We examined the effects of human chorionic gonadotropin (hCG) treatment on Day 5 (Day 0 = day of artificial insemination: AI) and intravaginal progesterone device (IVPD) treatment from Day 5 to 19 on the conception and detection rates of return to estrus (re-estrus) in lactating dairy cows. A total...