Publications by authors named "Kohei Oikawa"

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Effects of Calcium Salts of Fatty Acids on Lactation, Rumen Fermentation, and Methane Emission in Dairy Cows.
Yuko Kamiya, Tomoyuki Suzuki, Kohei Oikawa, Daiki Kobayashi, Kouki Fujioka

Anim Sci J· October 2025

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Methane emission prediction models for lactating cows based on feed intake, body weight, and milk yield and composition: Variable methane conversion factor-based approach.
Kohei Oikawa, Fuminori Terada, Mitsunori Kurihara, Tomoyuki Suzuki, Itoko Nonaka

J Dairy Sci· July 2025

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Effect of residual methane emission on physiological characteristics and carcass performance in Japanese Black cattle.
Minji Kim, Tatsunori Masaki, Kohei Oikawa, Akane Ashihara, Kentaro Ikuta

Anim Sci J· May 2024

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Variation among individual beef cattle in methane-to-carbon dioxide ratio measured under on-farm conditions using the sniffer method.
Kohei Oikawa, Minji Kim, Fuminori Terada, Tatsunori Masaki, Yaichirou Yasuda

Anim Sci J· January 2024

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Effects of fermentative quality of corn silage on lactation, blood metabolites, and rumen fermentation in dairy cows.
Yuko Kamiya, Tomoyuki Suzuki, Kohei Oikawa, Hisami Kobayashi, Masanori Tohno

Anim Sci J· November 2023

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Prediction of methane emissions from fattening cattle using the methane-to-carbon dioxide ratio.
Kohei Oikawa, Tomoyuki Suzuki, Yuko Kamiya, Mikito Higuchi, Tomoya Yamada

Anim Sci J· March 2023

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The influence of breath concentration in the gas sample on the accuracy of methane to carbon dioxide ratio using the sniffer method in dairy cows.
Kohei Oikawa, Yuko Kamiya, Fuminori Terada, Tomoyuki Suzuki

Anim Sci J· June 2022

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Prediction of enteric methane emissions from lactating cows using methane to carbon dioxide ratio in the breath.
Tomoyuki Suzuki, Yuko Kamiya, Kohei Oikawa, Itoko Nonaka, Takumi Shinkai

Anim Sci J· January 2022

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Effects of use of conventional and sexed semen on the conception rate in heifers: A comparison study.
Kohei Oikawa, Takeshi Yamazaki, Satoshi Yamaguchi, Hayato Abe, Hanako Bai

Theriogenology· September 2019

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Radiofrequency hydrogen ion source with permanent magnets providing axial magnetic field.
Kohei Oikawa, Yuta Saito, Shota Komizunai, Kazunori Takahashi, Akira Ando

Rev Sci Instrum· February 2014

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Five cases of aconite poisoning: toxicokinetics of aconitines.
Yuji Fujita, Katsutoshi Terui, Megumi Fujita, Atsushi Kakizaki, Norio Sato, Kohei Oikawa

J Anal Toxicol· April 2007

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