Uterine bacterial contamination is common in dairy cattle during the first 2 weeks postpartum. Endometritis causes delayed ovarian activity and prolonged luteal phases, resulting in reduce submission, conception and pregnancy rates and increased culling.
High producing dairy cows in early lactation are generally in negative energy balance and prone to develop ketosis. Their reduced appetite during the transition period challenges their ability to fulfill their nutrient requirements for milk production.
Endometritis is defined as a process that causes superficial endometrial inflammation with the presence or not of purulent vaginal discharge (PVD) between 21- and 49-days post-partum. PVD in cows during the puerperium has a negative affect on milk production and farm profitability
The transition period is challenging for lactating dairy cows. Many ailments pop-up of metabolic as well as infectious origin result of increased stress/reduced defenses, and sudden increased body demands for nutrients.