Heat stress has consequences on both the physiology and reproductive performance of
cows, but the most dramatic effect for dairy producers is the decrease produced in fertility …

After 80 years of the commercial application of artificial insemination (AI) in the cow, the
method still has numerous benefits over natural insemination including worldwide gene …

Runs of homozygosity (ROH) are defined as contiguous homozygous regions of the genome
where the two haplotypes inherited from the parents are identical. It has been shown that the …

Because progesterone (P4) is essential for pregnancy establishment and maintenance, we
investigated the effect of increased concentrations of P4 on embryonic attachment and …

There has been a significant decline in the reproductive performance of dairy cattle in recent
decades. Cows, take longer time to return to the oestrus after calving, have poorer …

Lactating crossbred dairy cows were synchronized to receive a timed artificial insemination
(TAI), and blood samples were collected from all cows from TAI until pregnancy diagnosis 39 …

Contents This report reviews the clinical applications of routine ultrasound in gestation
control programmes for dairy herds. Emphasis is placed on identifying risks of late …

Carrying twins has been extensively described as an emerging principal non-infectious
factor jeopardizing pregnancy maintenance and reducing the lifespan of dairy cows. The risk …

The ruminant placenta functions as an endocrine and paracrine organ secreting proteins,
growth factors, and steroid hormones, including pregnancy-associated glycoproteins (PAG) …

Pregnancy-associated glycoproteins (PAG) are produced by the ruminant placenta and
secreted into the maternal circulation throughout pregnancy. The extent to which circulating …