T. Koyama

Prediction of calving time in Holstein dairy cows by monitoring the ventral tail base surface temperature.

R. Miura, K. Yoshioka, K. Koyama, 2018, Veterinary journal.

Enhancement of maternal recognition of pregnancy with parthenogenetic embryos in bovine embryo transfer.

Hitomi Takahashi, K. Koyama, T. Koyama, 2014, Theriogenology.

A Uremia Test in Cattle by Estimation of Urea Nitrogen Content of Ocular Chamber Fluid

T. Koyama, H. Ohara, F. Fukuda, 1976 .

Repeatability of antral follicle count according parity in dairy cows

K. Koyama, T. Koyama, M. Sugimoto, 2018, The Journal of reproduction and development.

Modification of Hemoglobin Binding Assay and Measurement of Bovine Haptoglobin in Postpartum Period

T. Koyama, H. Yokota, Y. Matsui, 2012 .

Optimization of diagnostic methods and criteria of endometritis for various postpartum days to evaluate infertility in dairy cows.

K. Koyama, T. Koyama, M. Sugimoto, 2018, Theriogenology.

Characteristics of dairy cows with a pronounced reduction in first milk yield after estrus onset

K. Koyama, T. Koyama, M. Sugimoto, 2017 .