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 …

Summer heat stress (HS) is a major contributing factor in low fertility in lactating dairy cows
in hot environments. Although modern cooling systems are used in dairy farms, fertility …

The objective was to examine the effects of presynchronization and bovine somatotropin
(bST) on pregnancy rates to a timed artificial insemination protocol in lactating dairy cows …

Establishment and maintenance of pregnancy is difficult in lactating dairy cows exposed to
heat stress because of reductions in estrous detection rate and the proportion of …

When dairy cattle are subjected to heat stress, reproductive efficiency declines. Cows under
heat stress have reduced duration and intensity of estrus, altered follicular development, and …

Dairy farming is vulnerable to global warming and climate change. Improving and
maintaining conception rates (CRs) have a paramount importance for the profitability of any …

Heat stress causes a large decline in pregnancy success per insemination during warm
times of the year. Improvements in fertility are possible by exploiting knowledge about how …

Stress can affect reproductive performance of lactating cows by targeting the ovarian pool of
follicles and their enclosed oocytes. Among the documented stressors are heat stress (ie …

Heat stress causes large reductions in fertility in lactating dairy cows. The magnitude and
geographical extent of this problem is increasing because improvements in milk yield have …

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 …