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 …

The objective of this observational study was to identify factors associated with estrous
duration (DU) and intensity measured as the peak of activity (PA) change and subsequent …

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 …

Our objective was to determine the magnitude of, and factors affecting, pregnancy loss for
lactating Holstein cows on a commercial dairy farm when diagnosed with twin (n= 98) or …

Accurate diagnosis of non-pregnancy and prompt re-enlistment of “non-pregnant” cattle into
an appropriate breeding protocol are essential components of successful reproductive …

A prognosis of the likelihood of insemination success is valuable information for the decision
to start inseminating a cow. This decision is important for the reproduction management of …

The aim of the present study was to determine the relationship of progesterone (P4), bovine
pregnancy-associated glycoprotein-1 (bPAG-1) and nitric oxide (NO) levels with late …

The possible relationship between Coxiella-seropositivity and the reproductive performance
of cows during the previous year to the serological screening was examined in three high …