Use of gender- or sex-sorted A.I. semen continues to grow rapidly among U.S. dairy producers, even though the technology is still in its relative infancy. The first limited commercial distributions of...

In the 1980s, a breakthrough in semen sexing technology was made by USDA researchers in the Lawrence Livermore Laboratory in California. The patents for this technology were licensed to a company named...

Historically, cows with poor dry matter intakes, negative energy balance, or poor health due to fresh cow problems caused by ketosis, milk fever, displaced abomasums, dystocia, retained placenta, or uterine...

Reestablishing estrous cycles after calving has been studied since the 1920s. Back then, Sir John Hammond of Cambridge made some of the first recorded observations in dairy cattle

Getting fresh cows off to a good start is important. Many reproductive disorders are complex and have their root in fresh cow conditions. A myth is a tradition or legend that attempts to express or explain...

One of the exciting areas of research in which nutrition may impact reproductive performance are the results from many experiments feeding fats. These fats may be a big boost to improving lactating dairy...