Heat stress (HS) has a pronounced deleterious effect on fertility in dairy herds throughout
the world, especially in hot and humid summer months in tropical and subtropical areas …

Lactating Holstein cows were used to determine if pregnancy rate from embryo transfer (n=
113) differed from contemporary control cows (n= 524) that were artificially inseminated (AI) …

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 …

Timed embryo transfer (TET) using in vitro produced (IVP) embryos without estrus detection
can be used to reduce adverse effects of heat stress on fertility. One limitation is the poor …

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 …

Although heat stress has multiple effects to lower pregnancy rate in lactating dairy cows, a
major pathway is in its effects on the early cleavage stage embryo. Conceptually, and in …

Heat stress affects the fertility and reproductive livestock performance by compromising the
physiology reproductive tract, through hormonal imbalance, decreased oocyte quality and …

The global population is expected to increase from 7.6 to 9.6 billion people from 2017 to
2050. Increased demand for livestock production and rising global temperatures have made …

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 …

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