First lactation management

摘要

THE outcome of the first lactation will dictate whether the gilt remains in the herd or is culled. Culling of gilts following a poor first lactation represents an economic drain for producers. Preparing the gilt for a successful first lactation will also impact lactation performance in subsequent parities. The gilt is faced with biological challenges that should be recognized in order to ensure a successful lactation. The gilt is still growing substantially at time of breeding, and throughout pregnancy and lactation. Her growth is not only confined to the skeletal structure, muscle mass and internal organs, but also to the mammary system.