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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Average temperature-humidity index (THI) by hours during the intravaginal temperature and heifers’ behavior data collection dates for 2020 and 2021 at Southwest Agriculture Research and Extension Center, Glade Spring, VA, USA.