What is the primary concern regarding protein intake for pregnant heifers?

The primary concern regarding protein intake for pregnant heifers relates to potential increases in calving difficulties. During pregnancy, particularly in the later stages, the nutritional demands of the heifer increase significantly to support both her own growth and that of the developing fetus. If protein intake is excessively high, it can lead to overly rapid fetal growth, which may result in larger birth weights. This increase in size can complicate the calving process, potentially leading to higher incidences of dystocia (difficult births) and associated risks for both the heifer and the calf.

While protein is essential for growth and fetal development, the balance must be carefully managed to prevent adverse outcomes. Proper nutritional management is vital to ensure that pregnant heifers receive adequate protein without reaching levels that could hinder safe calving. This understanding is crucial for livestock producers to optimize reproductive outcomes and ensure the health of both the heifer and her offspring.