In pasture-based dairy systems, supplementary feeds are used to increase dry matter intake
and milk production. Historically, supplementation involved the provision of the same …

Insulin-like growth factor-I (IGF-I) plays a pivotal role in cattle fertility, acting as a monitoring
signal that allows reproductive events to occur when nutritional conditions for successful …

The objectives of this study were to evaluate factors associated with resumption of
postpartum estrous cycles and embryonic survival in lactating dairy cows. Holstein cows …

Mature Holstein cows were drenched daily with either 500mL of water (control; n= 28) or
propylene glycol (PPG; n= 28) from d 10 before parturition until d 25 postpartum. Follicular …

Contents For several decades, researchers worldwide report a decrease in fertility in high‐
yielding dairy cows, most probably based on conflicting metabolic and reproductive needs …

BACKGROUND Insulin resistance (IR) and hyperinsulinemia compromise fertility in females
and are well-recognized characteristics of anovulatory women with polycystic ovary …

Resumption of ovulation after parturition is a coordinated process that involves recoupling of
the GH/insulin-like growth factor 1 axis in the liver, increase in follicular development and …

This study was carried out to evaluate effects of pre-ovulatory follicle size, plasma
concentrations of estradiol and progesterone, and season on pregnancy outcomes in dairy …

During early postpartum, high-producing dairy cows undergo a period of extensive tissue
catabolism because of negative nutrient balance. Homeorrhetic controls assure that …

Postpartum diseases are common in dairy cows, and their incidence contributes to reduced
fertility and increased risk of culling, making their prevention and management extremely …