The ovarian follicle provides the oocyte with the ideal environment for growth and
development in preparation for ovulation and fertilisation. The follicle undergoes many …

In most mammalian species including cattle, heat stress has deleterious effects on
nutritional, physiological and reproductive functions. Exposure of animals to a hot …

The goal was to understand the role of heat shock at the zygote stage in causing infertility.
Culture at 40° C reduced the percentage of inseminated oocytes that became a morula or …

Chronic, subclinical intramammary infection depresses fertility. We previously found that
30% of subclinical mastitic cows exhibit delayed ovulation, low circulating estradiol levels …

This study compared immediate and carryover effects of mastitis induced by Gram-negative
endotoxin (E. coli LPS) and Gram-positive exosecretions (Staph. aureus ex.) on preovulatory …

Climate change represents a significant environmental challenge to human welfare. One of
many negative impacts may be on animal reproduction. Elevated ambient temperature …

In vitro generation of fertile oocytes has been reported in several mammalian species.
However, oocyte integrity is compromised by in vitro culture. Here, we aimed to understand …

Abstract Oxygen concentration (0 2) in antral ovarian follicles is below that found in most
tissues, which is important for adequate granulosa cell function. The VEGF system is linked …

Low pregnancy rates during the summer are due, in part, to reduced fertilization. Given that
elevated temperature is associated with this season, we investigated the effect of heat stress …

Se presenta una revisión crítica pertinente a los principales efectos de altas temperaturas
sobre la fisiología reproductiva de la vaca, para resaltar la importancia económica y …