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AbstractFull Text

Some dairy cows display a pronounced reduction in first milk yield after estrus onset. The objective of this study was to evaluate the usefulness of the pronounced reduction in milk yield as an indicator of the optimal time for artificial insemination (AI). We confirmed that the frequency of a...

Author(s)
Koyama, K.; Koyama, T.; Matsui, Y.; Sugimoto, M.; Kusakari, N.; Osaka, I.; Nagano, M.
Publisher
Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
Citation
Japanese Journal of Veterinary Research, 2017, 65, 2, pp 55-63
Abstract

The primary objective of this study was to investigate the effects of abnormal ovarian cycles during the pre-service postpartum period on subsequent reproductive performance of high-producing Holstein cows. The study was conducted in a commercial dairy farm with approximately 150 lactating cows, in ...

Author(s)
Shrestha, H. K.; Nakao, T.; Suzuki, T.; Higaki, T.; Akita, M.
Publisher
Elsevier Science Inc., New York, USA
Citation
Theriogenology, 2004, 61, 7/8, pp 1559-1571