Obesity in horses is never a desired condition, but especially so for animals that have developed equine metabolic syndrome (EMS), a condition similar to Type II Diabetes in people.
It is all about adding value and risk management, though the producer still will need to determine the price needed to sell his or her fed cattle to break even on the transaction.
Complications during the foaling process are always an emergency. Horse managers should develop a working relationship with the attending veterinarian well before foaling.