Loss of pregnancy can occur at many different stages of gestation and for a variety of causes
but clearly produces a negative impact for reproductive and economic performances of dairy …

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 …

The aim of the present study was to establish whether temperature–humidity index values,
as a measure of heat comfort, from Days 1 to 40 of gestation could be associated with the …

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 …

Pregnancy losses are a biological challenge and economically important in dairy herds. A
meta-analysis was conducted to quantify losses in 4 periods from 19 to 90 d of pregnancy …

The objectives of this study were to evaluate the effects of daily top-dressing (individually
feeding on the top of the total mixed ration) with rumen-protected methionine (RPM) from …

Increased genetic selection over the past 40 years has resulted in a dairy cow with an
improved biological efficiency for producing milk but with an associated reduced fertility …

A retrospective study involving 2756 pregnancies from two commercial dairy herds in
northeastern Spain determined relationships between management, production and …

The present study aimed to investigate the relationships between each step of the
reproductive process (cyclicity, estrus, and fertility) and both milk production and body …

Milk yields> 10,000 kg/year are common in modern dairy production, owing to improved
nutrition, management and genetics gains through use of progeny-tested bulls. However …