In dairy cows inseminated during the hot months of the year, there is a decrease in fertility.
Different factors contribute to this situation; the most important are a consequence of …

During their separate evolution from Bos taurus, zebu cattle (Bos indicus) have acquired
genes that confer thermotolerance at the physiological and cellular levels. Cattle from zebu …

The changes in the environmental factors like ambient temperature, relative humidity, wind
speed and solar radiation causes stresses in lactating cattle. Heat stress is a condition in …

Two experiments in two seasons evaluated fertilization rate and embryonic development in
dairy cattle. Experiment 1 (summer) compared lactating Holstein cows (n= 27; 97.3±4.1 d …

Summer heat stress is a main factor related to low conception rate in high producing dairy
herds in warm areas worldwide. We assessed the impact of several climate variables on …

Global warming represents a major stressful environmental condition that compromises the
reproductive efficiency of animals and humans via a rise of body temperature above its …

Abstract In the Northern Hemisphere, from June to September and in the Southern
Hemisphere from December to March, there are periods of reduced fertility (sub-fertility) in …

Thermal stress causes severe effects on the wellbeing and reproduction of cattle, including
changes in oogenesis and spermatogenesis, generating great concerns, which last for …

The production of embryos by superovulation is often reduced in periods of heat stress. The
associated reduction in the number of transferable embryos is due to reduced …

The negative impact of heat stress on cattle growth, development, reproduction and
production has been quite alarming across the world. Climate change elevates earth surface …