North American Veterinary Licensing Examination (NAVLE) Practice Test

Retained placenta is a common concern in postpartum dairy cows, and the typical range is indeed between 5-15%. This condition occurs when the placenta does not detach naturally after calving, which can lead to various health issues for the cow, including increased risk of infection, metabolic disorders, and reproductive problems.

Understanding the significance of this percentage is crucial for dairy management as it highlights the importance of monitoring cow health post-calving. Calving management practices, such as ensuring proper nutrition during late gestation, minimizing stress, and ensuring adequate space and comfort during labor, can help reduce the incidence of retained placenta.

The ranges outside of the 5-15% mark imply a higher prevalence that may suggest underlying management issues or health problems in the herd, emphasizing the need for veterinarians and dairy managers to track and address factors that may contribute to retained placenta.