Heat stress disrupts the ovarian microenvironment in cattle: An in vivo analysis of hormonal alterations, oxidative stress-induced apoptosis, and reduced pregnancy outcomes
Abstract
Heat stress during summer impairs reproductive function in cattle. Since previous studies have largely employed in vitro models to examine heat stress effects on oocytes and mural granulosa cells (MGCs), comprehensive in vivo research is required to elucidate its multifaceted impact on cattle fertility. This study aimed to clarify the mechanisms of heat stress-induced reproductive changes by comparing ovarian microenvironment, hormone levels, and pregnancy rates in cattle across seasons. Compared with the control group (temperature-humidity index [THI]
Fields of Study & Subjects
Effects of Environmental Stressors on Livestock
Reproductive Physiology in Livestock
Reproductive Biology and Fertility
Publication details
- Journal / source
- Animal Reproduction Science
- Publisher
- Elsevier BV
- Volume
- 287
- Pages
- 108111–108111
- Publication date
- 17 January 2026
- Language
- EN